diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-04 09:45:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-04 09:45:50 -0700 |
| commit | ad0bf4eb91c2f9b93479b679e5472094ddb76da8 (patch) | |
| tree | 4025ab22e3ea949259a5078d06cf7a75afbb8ed3 | |
| parent | Merge tag 'arc-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc (diff) | |
| parent | s390/mm: cleanup init_new_context() callback (diff) | |
| download | wireguard-linux-ad0bf4eb91c2f9b93479b679e5472094ddb76da8.tar.xz wireguard-linux-ad0bf4eb91c2f9b93479b679e5472094ddb76da8.zip | |
Merge tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Update maintainers. Niklas Schnelle takes over zpci and Vineeth
Vijayan common io code.
- Extend cpuinfo to include topology information.
- Add new extended counters for IBM z15 and sampling buffer allocation
rework in perf code.
- Add control over zeroing out memory during system restart.
- CCA protected key block version 2 support and other
fixes/improvements in crypto code.
- Convert to new fallthrough; annotations.
- Replace zero-length arrays with flexible-arrays.
- QDIO debugfs and other small improvements.
- Drop 2-level paging support optimization for compat tasks. Varios mm
cleanups.
- Remove broken and unused hibernate / power management support.
- Remove fake numa support which does not bring any benefits.
- Exclude offline CPUs from CPU topology masks to be more consistent
with other architectures.
- Prevent last branching instruction address leaking to userspace.
- Other small various fixes and improvements all over the code.
* tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits)
s390/mm: cleanup init_new_context() callback
s390/mm: cleanup virtual memory constants usage
s390/mm: remove page table downgrade support
s390/qdio: set qdio_irq->cdev at allocation time
s390/qdio: remove unused function declarations
s390/ccwgroup: remove pm support
s390/ap: remove power management code from ap bus and drivers
s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc
s390/mm: cleanup arch_get_unmapped_area() and friends
s390/ism: remove pm support
s390/cio: use fallthrough;
s390/vfio: use fallthrough;
s390/zcrypt: use fallthrough;
s390: use fallthrough;
s390/cpum_sf: Fix wrong page count in error message
s390/diag: fix display of diagnose call statistics
s390/ap: Remove ap device suspend and resume callbacks
s390/pci: Improve handling of unset UID
s390/pci: Fix zpci_alloc_domain() over allocation
s390/qdio: pass ISC as parameter to chsc_sadc()
...
95 files changed, 800 insertions, 2809 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 44c1e8b3b3b4..6599d24bb8ab 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14613,7 +14613,7 @@ F: Documentation/s390/ F: Documentation/driver-api/s390-drivers.rst S390 COMMON I/O LAYER -M: Sebastian Ott <sebott@linux.ibm.com> +M: Vineeth Vijayan <vneethv@linux.ibm.com> M: Peter Oberparleiter <oberpar@linux.ibm.com> L: linux-s390@vger.kernel.org W: http://www.ibm.com/developerworks/linux/linux390/ @@ -14655,7 +14655,7 @@ S: Supported F: drivers/s390/net/ S390 PCI SUBSYSTEM -M: Sebastian Ott <sebott@linux.ibm.com> +M: Niklas Schnelle <schnelle@linux.ibm.com> M: Gerald Schaefer <gerald.schaefer@de.ibm.com> L: linux-s390@vger.kernel.org W: http://www.ibm.com/developerworks/linux/linux390/ diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 59c216af6264..2167bce993ff 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -102,13 +102,13 @@ config S390 select ARCH_INLINE_WRITE_UNLOCK_IRQ select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE select ARCH_KEEP_MEMBLOCK - select ARCH_SAVE_PAGE_KEYS if HIBERNATION select ARCH_STACKWALK select ARCH_SUPPORTS_ATOMIC_RMW select ARCH_SUPPORTS_NUMA_BALANCING select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_CMPXCHG_LOCKREF select ARCH_WANTS_DYNAMIC_TASK_STRUCT + select ARCH_WANT_DEFAULT_BPF_JIT select ARCH_WANT_IPC_PARSE_VERSION select BUILDTIME_TABLE_SORT select CLONE_BACKWARDS2 @@ -451,14 +451,6 @@ config NR_CPUS config HOTPLUG_CPU def_bool y -# Some NUMA nodes have memory ranges that span -# other nodes. Even though a pfn is valid and -# between a node's start and end pfns, it may not -# reside on that node. See memmap_init_zone() -# for details. <- They meant memory holes! -config NODES_SPAN_OTHER_NODES - def_bool NUMA - config NUMA bool "NUMA support" depends on SCHED_TOPOLOGY @@ -468,58 +460,9 @@ config NUMA This option adds NUMA support to the kernel. - An operation mode can be selected by appending - numa=<method> to the kernel command line. - - The default behaviour is identical to appending numa=plain to - the command line. This will create just one node with all - available memory and all CPUs in it. - config NODES_SHIFT - int "Maximum NUMA nodes (as a power of 2)" - range 1 10 - depends on NUMA - default "4" - help - Specify the maximum number of NUMA nodes available on the target - system. Increases memory reserved to accommodate various tables. - -menu "Select NUMA modes" - depends on NUMA - -config NUMA_EMU - bool "NUMA emulation" - default y - help - Numa emulation mode will split the available system memory into - equal chunks which then are distributed over the configured number - of nodes in a round-robin manner. - - The number of fake nodes is limited by the number of available memory - chunks (i.e. memory size / fake size) and the number of supported - nodes in the kernel. - - The CPUs are assigned to the nodes in a way that partially respects - the original machine topology (if supported by the machine). - Fair distribution of the CPUs is not guaranteed. - -config EMU_SIZE - hex "NUMA emulation memory chunk size" - default 0x10000000 - range 0x400000 0x100000000 - depends on NUMA_EMU - help - Select the default size by which the memory is chopped and then - assigned to emulated NUMA nodes. - - This can be overridden by specifying - - emu_size=<n> - - on the kernel command line where also suffixes K, M, G, and T are - supported. - -endmenu + int + default "1" config SCHED_SMT def_bool n @@ -867,15 +810,6 @@ config SECCOMP If unsure, say Y. -menu "Power Management" - -config ARCH_HIBERNATION_POSSIBLE - def_bool y - -source "kernel/power/Kconfig" - -endmenu - config CCW def_bool y @@ -1010,7 +944,6 @@ config S390_GUEST select TTY select VIRTUALIZATION select VIRTIO - select VIRTIO_CONSOLE help Enabling this option adds support for virtio based paravirtual device drivers on s390. diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c index 54f375627532..8bf46d705957 100644 --- a/arch/s390/appldata/appldata_os.c +++ b/arch/s390/appldata/appldata_os.c @@ -75,7 +75,7 @@ struct appldata_os_data { (waiting for I/O) */ /* per cpu data */ - struct appldata_os_per_cpu os_cpu[0]; + struct appldata_os_per_cpu os_cpu[]; } __attribute__((packed)); static struct appldata_os_data *appldata_os_data; diff --git a/arch/s390/boot/install.sh b/arch/s390/boot/install.sh index bed227f267ae..515b27a996b3 100644 --- a/arch/s390/boot/install.sh +++ b/arch/s390/boot/install.sh @@ -21,15 +21,10 @@ if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi -# Default install - same as make zlilo +echo "Warning: '${INSTALLKERNEL}' command not available - additional " \ + "bootloader config required" >&2 +if [ -f $4/vmlinuz-$1 ]; then mv $4/vmlinuz-$1 $4/vmlinuz-$1.old; fi +if [ -f $4/System.map-$1 ]; then mv $4/System.map-$1 $4/System.map-$1.old; fi -if [ -f $4/vmlinuz ]; then - mv $4/vmlinuz $4/vmlinuz.old -fi - -if [ -f $4/System.map ]; then - mv $4/System.map $4/System.old -fi - -cat $2 > $4/vmlinuz -cp $3 $4/System.map +cat $2 > $4/vmlinuz-$1 +cp $3 $4/System.map-$1 diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig index 0c86ba19fa2b..46038bc58c9e 100644 --- a/arch/s390/configs/debug_defconfig +++ b/arch/s390/configs/debug_defconfig @@ -532,6 +532,7 @@ CONFIG_INPUT_EVDEV=y # CONFIG_SERIO is not set CONFIG_LEGACY_PTY_COUNT=0 CONFIG_NULL_TTY=m +CONFIG_VIRTIO_CONSOLE=y CONFIG_HW_RANDOM_VIRTIO=m CONFIG_RAW_DRIVER=m CONFIG_HANGCHECK_TIMER=m diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig index 6b27d861a9a3..7cd0648c1f4e 100644 --- a/arch/s390/configs/defconfig +++ b/arch/s390/configs/defconfig @@ -528,6 +528,7 @@ CONFIG_INPUT_EVDEV=y # CONFIG_SERIO is not set CONFIG_LEGACY_PTY_COUNT=0 CONFIG_NULL_TTY=m +CONFIG_VIRTIO_CONSOLE=y CONFIG_HW_RANDOM_VIRTIO=m CONFIG_RAW_DRIVER=m CONFIG_HANGCHECK_TIMER=m diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c index 1c23d84a9097..73044634d342 100644 --- a/arch/s390/crypto/aes_s390.c +++ b/arch/s390/crypto/aes_s390.c @@ -342,6 +342,7 @@ static int cbc_aes_crypt(struct skcipher_request *req, unsigned long modifier) memcpy(walk.iv, param.iv, AES_BLOCK_SIZE); ret = skcipher_walk_done(&walk, nbytes - n); } + memzero_explicit(¶m, sizeof(param)); return ret; } @@ -470,6 +471,8 @@ static int xts_aes_crypt(struct skcipher_request *req, unsigned long modifier) walk.dst.virt.addr, walk.src.virt.addr, n); ret = skcipher_walk_done(&walk, nbytes - n); } + memzero_explicit(&pcc_param, sizeof(pcc_param)); + memzero_explicit(&xts_param, sizeof(xts_param)); return ret; } diff --git a/arch/s390/include/asm/hw_irq.h b/arch/s390/include/asm/hw_irq.h index adae176757ae..9078b5b6b837 100644 --- a/arch/s390/include/asm/hw_irq.h +++ b/arch/s390/include/asm/hw_irq.h @@ -7,6 +7,5 @@ void __init init_airq_interrupts(void); void __init init_cio_interrupts(void); -void __init init_ext_interrupts(void); #endif diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h index 084e71b7272a..b63bd66404b8 100644 --- a/arch/s390/include/asm/ipl.h +++ b/arch/s390/include/asm/ipl.h @@ -119,6 +119,7 @@ enum diag308_subcode { DIAG308_LOAD_NORMAL_DUMP = 4, DIAG308_SET = 5, DIAG308_STORE = 6, + DIAG308_LOAD_NORMAL = 7, }; enum diag308_rc { diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 237ee0c4169f..612ed3c6d581 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -141,7 +141,9 @@ struct lowcore { /* br %r1 trampoline */ __u16 br_r1_trampoline; /* 0x0400 */ - __u8 pad_0x0402[0x0e00-0x0402]; /* 0x0402 */ + __u32 return_lpswe; /* 0x0402 */ + __u32 return_mcck_lpswe; /* 0x0406 */ + __u8 pad_0x040a[0x0e00-0x040a]; /* 0x040a */ /* * 0xe00 contains the address of the IPL Parameter Information diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index e21b618ad432..e12ff0f29d1a 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -34,8 +34,6 @@ typedef struct { unsigned int uses_cmm:1; /* The gmaps associated with this context are allowed to use huge pages. */ unsigned int allow_gmap_hpage_1m:1; - /* The mmu context is for compat task */ - unsigned int compat_mm:1; } mm_context_t; #define INIT_MM_CONTEXT(name) \ diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index afa836014076..c9f3d8a52756 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -18,6 +18,8 @@ static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { + unsigned long asce_type, init_entry; + spin_lock_init(&mm->context.lock); INIT_LIST_HEAD(&mm->context.pgtable_list); INIT_LIST_HEAD(&mm->context.gmap_list); @@ -26,7 +28,6 @@ static inline int init_new_context(struct task_struct *tsk, atomic_set(&mm->context.is_protected, 0); mm->context.gmap_asce = 0; mm->context.flush_mm = 0; - mm->context.compat_mm = test_thread_flag(TIF_31BIT); #ifdef CONFIG_PGSTE mm->context.alloc_pgste = page_table_allocate_pgste || test_thread_flag(TIF_PGSTE) || @@ -37,33 +38,34 @@ static inline int init_new_context(struct task_struct *tsk, mm->context.allow_gmap_hpage_1m = 0; #endif switch (mm->context.asce_limit) { - case _REGION2_SIZE: + default: /* - * forked 3-level task, fall through to set new asce with new - * mm->pgd + * context created by exec, the value of asce_limit can + * only be zero in this case */ - case 0: - /* context created by exec, set asce limit to 4TB */ - mm->context.asce_limit = STACK_TOP_MAX; - mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | - _ASCE_USER_BITS | _ASCE_TYPE_REGION3; + VM_BUG_ON(mm->context.asce_limit); + /* continue as 3-level task */ + mm->context.asce_limit = _REGION2_SIZE; + fallthrough; + case _REGION2_SIZE: + /* forked 3-level task */ + init_entry = _REGION3_ENTRY_EMPTY; + asce_type = _ASCE_TYPE_REGION3; break; - case -PAGE_SIZE: - /* forked 5-level task, set new asce with new_mm->pgd */ - mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | - _ASCE_USER_BITS | _ASCE_TYPE_REGION1; + case TASK_SIZE_MAX: + /* forked 5-level task */ + init_entry = _REGION1_ENTRY_EMPTY; + asce_type = _ASCE_TYPE_REGION1; break; case _REGION1_SIZE: - /* forked 4-level task, set new asce with new mm->pgd */ - mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | - _ASCE_USER_BITS | _ASCE_TYPE_REGION2; + /* forked 4-level task */ + init_entry = _REGION2_ENTRY_EMPTY; + asce_type = _ASCE_TYPE_REGION2; break; - case _REGION3_SIZE: - /* forked 2-level compat task, set new asce with new mm->pgd */ - mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | - _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT; } - crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm)); + mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | + _ASCE_USER_BITS | asce_type; + crst_table_init((unsigned long *) mm->pgd, init_entry); return 0; } diff --git a/arch/s390/include/asm/numa.h b/arch/s390/include/asm/numa.h index 35f8cbe7e5bb..23cd5d1b734b 100644 --- a/arch/s390/include/asm/numa.h +++ b/arch/s390/include/asm/numa.h @@ -13,24 +13,13 @@ #ifdef CONFIG_NUMA #include <linux/numa.h> -#include <linux/cpumask.h> void numa_setup(void); -int numa_pfn_to_nid(unsigned long pfn); -int __node_distance(int a, int b); -void numa_update_cpu_topology(void); - -extern cpumask_t node_to_cpumask_map[MAX_NUMNODES]; -extern int numa_debug_enabled; #else static inline void numa_setup(void) { } -static inline void numa_update_cpu_topology(void) { } -static inline int numa_pfn_to_nid(unsigned long pfn) -{ - return 0; -} #endif /* CONFIG_NUMA */ + #endif /* _ASM_S390_NUMA_H */ diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index 62440a82731a..f2d4c1bd3429 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -166,20 +166,20 @@ int arch_make_page_accessible(struct page *page); #define __pa(x) ((unsigned long)(x)) #define __va(x) ((void *)(unsigned long)(x)) -#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) -#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) +#define phys_to_pfn(phys) ((phys) >> PAGE_SHIFT) +#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) + +#define phys_to_page(phys) pfn_to_page(phys_to_pfn(phys)) +#define page_to_phys(page) pfn_to_phys(page_to_pfn(page)) + +#define pfn_to_virt(pfn) __va(pfn_to_phys(pfn)) +#define virt_to_pfn(kaddr) (phys_to_pfn(__pa(kaddr))) #define pfn_to_kaddr(pfn) pfn_to_virt(pfn) #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr)) #define page_to_virt(page) pfn_to_virt(page_to_pfn(page)) -#define phys_to_pfn(kaddr) ((kaddr) >> PAGE_SHIFT) -#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) - -#define phys_to_page(kaddr) pfn_to_page(phys_to_pfn(kaddr)) -#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) - -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) +#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr)) #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index b05187ce5dbd..7485ee561fec 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -5,6 +5,7 @@ #include <linux/pci.h> #include <linux/mutex.h> #include <linux/iommu.h> +#include <linux/pci_hotplug.h> #include <asm-generic/pci.h> #include <asm/pci_clp.h> #include <asm/pci_debug.h> @@ -25,6 +26,7 @@ int pci_proc_domain(struct pci_bus *); #define ZPCI_NR_DMA_SPACES 1 #define ZPCI_NR_DEVICES CONFIG_PCI_NR_FUNCTIONS +#define ZPCI_DOMAIN_BITMAP_SIZE (1 << 16) /* PCI Function Controls */ #define ZPCI_FC_FN_ENABLED 0x80 @@ -96,6 +98,7 @@ struct s390_domain; struct zpci_dev { struct pci_bus *bus; struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */ + struct hotplug_slot hotplug_slot; enum zpci_state state; u32 fid; /* function ID, used by sclp */ @@ -186,6 +189,9 @@ int clp_enable_fh(struct zpci_dev *, u8); int clp_disable_fh(struct zpci_dev *); int clp_get_state(u32 fid, enum zpci_state *state); +/* UID */ +void update_uid_checking(bool new); + /* IOMMU Interface */ int zpci_init_iommu(struct zpci_dev *zdev); void zpci_destroy_iommu(struct zpci_dev *zdev); diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h index 77606c4acd58..74a352f8c0d1 100644 --- a/arch/s390/include/asm/pgalloc.h +++ b/arch/s390/include/asm/pgalloc.h @@ -34,19 +34,21 @@ static inline void crst_table_init(unsigned long *crst, unsigned long entry) memset64((u64 *)crst, entry, _CRST_ENTRIES); } -static inline unsigned long pgd_entry_type(struct mm_struct *mm) +int crst_table_upgrade(struct mm_struct *mm, unsigned long limit); + +static inline unsigned long check_asce_limit(struct mm_struct *mm, unsigned long addr, + unsigned long len) { - if (mm_pmd_folded(mm)) - return _SEGMENT_ENTRY_EMPTY; - if (mm_pud_folded(mm)) - return _REGION3_ENTRY_EMPTY; - if (mm_p4d_folded(mm)) - return _REGION2_ENTRY_EMPTY; - return _REGION1_ENTRY_EMPTY; -} + int rc; -int crst_table_upgrade(struct mm_struct *mm, unsigned long limit); -void crst_table_downgrade(struct mm_struct *); + if (addr + len > mm->context.asce_limit && + addr + len <= TASK_SIZE) { + rc = crst_table_upgrade(mm, addr + len); + if (rc) + return (unsigned long) rc; + } + return addr; +} static inline p4d_t *p4d_alloc_one(struct mm_struct *mm, unsigned long address) { @@ -116,24 +118,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) static inline pgd_t *pgd_alloc(struct mm_struct *mm) { - unsigned long *table = crst_table_alloc(mm); - - if (!table) - return NULL; - if (mm->context.asce_limit == _REGION3_SIZE) { - /* Forking a compat process with 2 page table levels */ - if (!pgtable_pmd_page_ctor(virt_to_page(table))) { - crst_table_free(mm, table); - return NULL; - } - } - return (pgd_t *) table; + return (pgd_t *) crst_table_alloc(mm); } static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) { - if (mm->context.asce_limit == _REGION3_SIZE) - pgtable_pmd_page_dtor(virt_to_page(pgd)); crst_table_free(mm, (unsigned long *) pgd); } diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index aadb3d0e2adc..555d148ccf32 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -92,15 +92,15 @@ extern void __bpon(void); */ #define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk, TIF_31BIT) ? \ - (1UL << 31) : -PAGE_SIZE) + _REGION3_SIZE : TASK_SIZE_MAX) #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \ - (1UL << 30) : (1UL << 41)) + (_REGION3_SIZE >> 1) : (_REGION2_SIZE >> 1)) #define TASK_SIZE TASK_SIZE_OF(current) #define TASK_SIZE_MAX (-PAGE_SIZE) #define STACK_TOP (test_thread_flag(TIF_31BIT) ? \ - (1UL << 31) : (1UL << 42)) -#define STACK_TOP_MAX (1UL << 42) + _REGION3_SIZE : _REGION2_SIZE) +#define STACK_TOP_MAX _REGION2_SIZE #define HAVE_ARCH_PICK_MMAP_LAYOUT @@ -161,6 +161,7 @@ typedef struct thread_struct thread_struct; #define INIT_THREAD { \ .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \ .fpu.regs = (void *) init_task.thread.fpu.fprs, \ + .last_break = 1, \ } /* @@ -177,7 +178,6 @@ typedef struct thread_struct thread_struct; regs->psw.mask = PSW_USER_BITS | PSW_MASK_BA; \ regs->psw.addr = new_psw; \ regs->gprs[15] = new_stackp; \ - crst_table_downgrade(current->mm); \ execve_tail(); \ } while (0) diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index b241ddb67caf..534f212753d6 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -8,6 +8,7 @@ #include <linux/bits.h> #include <uapi/asm/setup.h> +#include <linux/build_bug.h> #define EP_OFFSET 0x10008 #define EP_STRING "S390EP" @@ -162,6 +163,12 @@ static inline unsigned long kaslr_offset(void) return __kaslr_offset; } +static inline u32 gen_lpswe(unsigned long addr) +{ + BUILD_BUG_ON(addr > 0xfff); + return 0xb2b20000 | addr; +} + #else /* __ASSEMBLY__ */ #define IPL_DEVICE (IPL_DEVICE_OFFSET) diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h index b157a81fb977..231a51e870fe 100644 --- a/arch/s390/include/asm/smp.h +++ b/arch/s390/include/asm/smp.h @@ -34,6 +34,7 @@ extern int smp_vcpu_scheduled(int cpu); extern void smp_yield_cpu(int cpu); extern void smp_cpu_set_polarization(int cpu, int val); extern int smp_cpu_get_polarization(int cpu); +extern int smp_cpu_get_cpu_address(int cpu); extern void smp_fill_possible_mask(void); extern void smp_detect_cpus(void); diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h index cca406fdbe51..fbb507504a3b 100644 --- a/arch/s390/include/asm/topology.h +++ b/arch/s390/include/asm/topology.h @@ -16,8 +16,8 @@ struct cpu_topology_s390 { unsigned short socket_id; unsigned short book_id; unsigned short drawer_id; - unsigned short node_id; unsigned short dedicated : 1; + int booted_cores; cpumask_t thread_mask; cpumask_t core_mask; cpumask_t book_mask; @@ -25,7 +25,6 @@ struct cpu_topology_s390 { }; extern struct cpu_topology_s390 cpu_topology[NR_CPUS]; -extern cpumask_t cpus_with_topology; #define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id) #define topology_thread_id(cpu) (cpu_topology[cpu].thread_id) @@ -37,6 +36,7 @@ extern cpumask_t cpus_with_topology; #define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id) #define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask) #define topology_cpu_dedicated(cpu) (cpu_topology[cpu].dedicated) +#define topology_booted_cores(cpu) (cpu_topology[cpu].booted_cores) #define mc_capable() 1 @@ -45,6 +45,7 @@ int topology_cpu_init(struct cpu *); int topology_set_cpu_management(int fc); void topology_schedule_update(void); void store_topology(struct sysinfo_15_1_x *info); +void update_cpu_masks(void); void topology_expect_change(void); const struct cpumask *cpu_coregroup_mask(int cpu); @@ -54,6 +55,8 @@ static inline void topology_init_early(void) { } static inline void topology_schedule_update(void) { } static inline int topology_cpu_init(struct cpu *cpu) { return 0; } static inline int topology_cpu_dedicated(int cpu_nr) { return 0; } +static inline int topology_booted_cores(int cpu_nr) { return 1; } +static inline void update_cpu_masks(void) { } static inline void topology_expect_change(void) { } #endif /* CONFIG_SCHED_TOPOLOGY */ @@ -71,19 +74,23 @@ static inline void topology_expect_change(void) { } #define cpu_to_node cpu_to_node static inline int cpu_to_node(int cpu) { - return cpu_topology[cpu].node_id; + return 0; } /* Returns a pointer to the cpumask of CPUs on node 'node'. */ #define cpumask_of_node cpumask_of_node static inline const struct cpumask *cpumask_of_node(int node) { - return &node_to_cpumask_map[node]; + return cpu_possible_mask; } #define pcibus_to_node(bus) __pcibus_to_node(bus) #define node_distance(a, b) __node_distance(a, b) +static inline int __node_distance(int a, int b) +{ + return 0; +} #else /* !CONFIG_NUMA */ diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index 33d4de233c5b..75f26d775027 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -54,7 +54,6 @@ CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE) obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o -obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o obj-$(CONFIG_AUDIT) += audit.o compat-obj-$(CONFIG_AUDIT) += compat_audit.o obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index ce33406cfe83..e80f0e6f5972 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -124,6 +124,8 @@ int main(void) OFFSET(__LC_EXT_DAMAGE_CODE, lowcore, external_damage_code); OFFSET(__LC_MCCK_FAIL_STOR_ADDR, lowcore, failing_storage_address); OFFSET(__LC_LAST_BREAK, lowcore, breaking_event_addr); + OFFSET(__LC_RETURN_LPSWE, lowcore, return_lpswe); + OFFSET(__LC_RETURN_MCCK_LPSWE, lowcore, return_mcck_lpswe); OFFSET(__LC_RST_OLD_PSW, lowcore, restart_old_psw); OFFSET(__LC_EXT_OLD_PSW, lowcore, external_old_psw); OFFSET(__LC_SVC_OLD_PSW, lowcore, svc_old_psw); diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c index e9dac9a24d3f..61f2b0412345 100644 --- a/arch/s390/kernel/diag.c +++ b/arch/s390/kernel/diag.c @@ -84,7 +84,7 @@ static int show_diag_stat(struct seq_file *m, void *v) static void *show_diag_stat_start(struct seq_file *m, loff_t *pos) { - return *pos <= nr_cpu_ids ? (void *)((unsigned long) *pos + 1) : NULL; + return *pos <= NR_DIAG_STAT ? (void *)((unsigned long) *pos + 1) : NULL; } static void *show_diag_stat_next(struct seq_file *m, void *v, loff_t *pos) diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 9205add8481d..3ae64914bd14 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -115,26 +115,29 @@ _LPP_OFFSET = __LC_LPP .macro SWITCH_ASYNC savearea,timer tmhh %r8,0x0001 # interrupting from user ? - jnz 1f + jnz 2f lgr %r14,%r9 + cghi %r14,__LC_RETURN_LPSWE + je 0f slg %r14,BASED(.Lcritical_start) clg %r14,BASED(.Lcritical_length) - jhe 0f + jhe 1f +0: lghi %r11,\savearea # inside critical section, do cleanup brasl %r14,cleanup_critical tmhh %r8,0x0001 # retest problem state after cleanup - jnz 1f -0: lg %r14,__LC_ASYNC_STACK # are we already on the target stack? + jnz 2f +1: lg %r14,__LC_ASYNC_STACK # are we already on the target stack? slgr %r14,%r15 srag %r14,%r14,STACK_SHIFT - jnz 2f + jnz 3f CHECK_STACK \savearea aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) - j 3f -1: UPDATE_VTIME %r14,%r15,\timer + j 4f +2: UPDATE_VTIME %r14,%r15,\timer BPENTER __TI_flags(%r12),_TIF_ISOLATE_BP -2: lg %r15,__LC_ASYNC_STACK # load async stack -3: la %r11,STACK_FRAME_OVERHEAD(%r15) +3: lg %r15,__LC_ASYNC_STACK # load async stack +4: la %r11,STACK_FRAME_OVERHEAD(%r15) .endm .macro UPDATE_VTIME w1,w2,enter_timer @@ -401,7 +404,7 @@ ENTRY(system_call) stpt __LC_EXIT_TIMER mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER lmg %r11,%r15,__PT_R11(%r11) - lpswe __LC_RETURN_PSW + b __LC_RETURN_LPSWE(%r0) .Lsysc_done: # @@ -608,43 +611,50 @@ ENTRY(pgm_check_handler) BPOFF stmg %r8,%r15,__LC_SAVE_AREA_SYNC lg %r10,__LC_LAST_BREAK - lg %r12,__LC_CURRENT + srag %r11,%r10,12 + jnz 0f + /* if __LC_LAST_BREAK is < 4096, it contains one of + * the lpswe addresses in lowcore. Set it to 1 (initial state) + * to prevent leaking that address to userspace. + */ + lghi %r10,1 +0: lg %r12,__LC_CURRENT lghi %r11,0 larl %r13,cleanup_critical lmg %r8,%r9,__LC_PGM_OLD_PSW tmhh %r8,0x0001 # test problem state bit - jnz 2f # -> fault in user space + jnz 3f # -> fault in user space #if IS_ENABLED(CONFIG_KVM) # cleanup critical section for program checks in sie64a lgr %r14,%r9 slg %r14,BASED(.Lsie_critical_start) clg %r14,BASED(.Lsie_critical_length) - jhe 0f + jhe 1f lg %r14,__SF_SIE_CONTROL(%r15) # get control block pointer ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE lctlg %c1,%c1,__LC_USER_ASCE # load primary asce larl %r9,sie_exit # skip forward to sie_exit lghi %r11,_PIF_GUEST_FAULT #endif -0: tmhh %r8,0x4000 # PER bit set in old PSW ? - jnz 1f # -> enabled, can't be a double fault +1: tmhh %r8,0x4000 # PER bit set in old PSW ? + jnz 2f # -> enabled, can't be a double fault tm __LC_PGM_ILC+3,0x80 # check for per exception jnz .Lpgm_svcper # -> single stepped svc -1: CHECK_STACK __LC_SAVE_AREA_SYNC +2: CHECK_STACK __LC_SAVE_AREA_SYNC aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE) - # CHECK_VMAP_STACK branches to stack_overflow or 4f - CHECK_VMAP_STACK __LC_SAVE_AREA_SYNC,4f -2: UPDATE_VTIME %r14,%r15,__LC_SYNC_ENTER_TIMER + # CHECK_VMAP_STACK branches to stack_overflow or 5f + CHECK_VMAP_STACK __LC_SAVE_AREA_SYNC,5f +3: UPDATE_VTIME %r14,%r15,__LC_SYNC_ENTER_TIMER BPENTER __TI_flags(%r12),_TIF_ISOLATE_BP lg %r15,__LC_KERNEL_STACK lgr %r14,%r12 aghi %r14,__TASK_thread # pointer to thread_struct lghi %r13,__LC_PGM_TDB tm __LC_PGM_ILC+2,0x02 # check for transaction abort - jz 3f + jz 4f mvc __THREAD_trap_tdb(256,%r14),0(%r13) -3: stg %r10,__THREAD_last_break(%r14) -4: lgr %r13,%r11 +4: stg %r10,__THREAD_last_break(%r14) +5: lgr %r13,%r11 la %r11,STACK_FRAME_OVERHEAD(%r15) stmg %r0,%r7,__PT_R0(%r11) # clear user controlled registers to prevent speculative use @@ -663,14 +673,14 @@ ENTRY(pgm_check_handler) stg %r13,__PT_FLAGS(%r11) stg %r10,__PT_ARGS(%r11) tm __LC_PGM_ILC+3,0x80 # check for per exception - jz 5f + jz 6f tmhh %r8,0x0001 # kernel per event ? jz .Lpgm_kprobe oi __PT_FLAGS+7(%r11),_PIF_PER_TRAP mvc __THREAD_per_address(8,%r14),__LC_PER_ADDRESS mvc __THREAD_per_cause(2,%r14),__LC_PER_CODE mvc __THREAD_per_paid(1,%r14),__LC_PER_ACCESS_ID -5: REENABLE_IRQS +6: REENABLE_IRQS xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) larl %r1,pgm_check_table llgh %r10,__PT_INT_CODE+2(%r11) @@ -775,7 +785,7 @@ ENTRY(io_int_handler) mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER .Lio_exit_kernel: lmg %r11,%r15,__PT_R11(%r11) - lpswe __LC_RETURN_PSW + b __LC_RETURN_LPSWE(%r0) .Lio_done: # @@ -1214,7 +1224,7 @@ ENTRY(mcck_int_handler) stpt __LC_EXIT_TIMER mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER 0: lmg %r11,%r15,__PT_R11(%r11) - lpswe __LC_RETURN_MCCK_PSW + b __LC_RETURN_MCCK_LPSWE .Lmcck_panic: lg %r15,__LC_NODAT_STACK @@ -1271,6 +1281,8 @@ ENDPROC(stack_overflow) #endif ENTRY(cleanup_critical) + cghi %r9,__LC_RETURN_LPSWE + je .Lcleanup_lpswe #if IS_ENABLED(CONFIG_KVM) clg %r9,BASED(.Lcleanup_table_sie) # .Lsie_gmap jl 0f @@ -1424,6 +1436,7 @@ ENDPROC(cleanup_critical) mvc __LC_RETURN_PSW(16),__PT_PSW(%r9) mvc 0(64,%r11),__PT_R8(%r9) lmg %r0,%r7,__PT_R0(%r9) +.Lcleanup_lpswe: 1: lmg %r8,%r9,__LC_RETURN_PSW BR_EX %r14,%r11 .Lcleanup_sysc_restore_insn: diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 6837affc19e8..4a71061974fd 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -144,6 +144,9 @@ static struct ipl_parameter_block *dump_block_ccw; static struct sclp_ipl_info sclp_ipl_info; +static bool reipl_fcp_clear; +static bool reipl_ccw_clear; + static inline int __diag308(unsigned long subcode, void *addr) { register unsigned long _addr asm("0") = (unsigned long) addr; @@ -691,6 +694,21 @@ static struct kobj_attribute sys_reipl_fcp_loadparm_attr = __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show, reipl_fcp_loadparm_store); +static ssize_t reipl_fcp_clear_show(struct kobject *kobj, + struct kobj_attribute *attr, char *page) +{ + return sprintf(page, "%u\n", reipl_fcp_clear); +} + +static ssize_t reipl_fcp_clear_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t len) +{ + if (strtobool(buf, &reipl_fcp_clear) < 0) + return -EINVAL; + return len; +} + static struct attribute *reipl_fcp_attrs[] = { &sys_reipl_fcp_device_attr.attr, &sys_reipl_fcp_wwpn_attr.attr, @@ -706,6 +724,9 @@ static struct attribute_group reipl_fcp_attr_group = { .bin_attrs = reipl_fcp_bin_attrs, }; +static struct kobj_attribute sys_reipl_fcp_clear_attr = + __ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store); + /* CCW reipl device attributes */ DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw); @@ -741,16 +762,36 @@ static struct kobj_attribute sys_reipl_ccw_loadparm_attr = __ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show, reipl_ccw_loadparm_store); +static ssize_t reipl_ccw_clear_show(struct kobject *kobj, + struct kobj_attribute *attr, char *page) +{ + return sprintf(page, "%u\n", reipl_ccw_clear); +} + +static ssize_t reipl_ccw_clear_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t len) +{ + if (strtobool(buf, &reipl_ccw_clear) < 0) + return -EINVAL; + return len; +} + +static struct kobj_attribute sys_reipl_ccw_clear_attr = + __ATTR(clear, 0644, reipl_ccw_clear_show, reipl_ccw_clear_store); + static struct attribute *reipl_ccw_attrs_vm[] = { &sys_reipl_ccw_device_attr.attr, &sys_reipl_ccw_loadparm_attr.attr, &sys_reipl_ccw_vmparm_attr.attr, + &sys_reipl_ccw_clear_attr.attr, NULL, }; static struct attribute *reipl_ccw_attrs_lpar[] = { &sys_reipl_ccw_device_attr.attr, &sys_reipl_ccw_loadparm_attr.attr, + &sys_reipl_ccw_clear_attr.attr, NULL, }; @@ -892,11 +933,17 @@ static void __reipl_run(void *unused) switch (reipl_type) { case IPL_TYPE_CCW: diag308(DIAG308_SET, reipl_block_ccw); - diag308(DIAG308_LOAD_CLEAR, NULL); + if (reipl_ccw_clear) + diag308(DIAG308_LOAD_CLEAR, NULL); + else + diag308(DIAG308_LOAD_NORMAL_DUMP, NULL); break; case IPL_TYPE_FCP: diag308(DIAG308_SET, reipl_block_fcp); - diag308(DIAG308_LOAD_CLEAR, NULL); + if (reipl_fcp_clear) + diag308(DIAG308_LOAD_CLEAR, NULL); + else + diag308(DIAG308_LOAD_NORMAL, NULL); break; case IPL_TYPE_NSS: diag308(DIAG308_SET, reipl_block_nss); @@ -1008,11 +1055,16 @@ static int __init reipl_fcp_init(void) } rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); - if (rc) { - kset_unregister(reipl_fcp_kset); - free_page((unsigned long) reipl_block_fcp); - return rc; - } + if (rc) + goto out1; + + if (test_facility(141)) { + rc = sysfs_create_file(&reipl_fcp_kset->kobj, + &sys_reipl_fcp_clear_attr.attr); + if (rc) + goto out2; + } else + reipl_fcp_clear = true; if (ipl_info.type == IPL_TYPE_FCP) { memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block)); @@ -1032,6 +1084,13 @@ static int __init reipl_fcp_init(void) } reipl_capabilities |= IPL_TYPE_FCP; return 0; + +out2: + sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group); +out1: + kset_unregister(reipl_fcp_kset); + free_page((unsigned long) reipl_block_fcp); + return rc; } static int __init reipl_type_init(void) diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index 8371855042dc..3514420f0259 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -95,14 +95,6 @@ static const struct irq_class irqclass_sub_desc[] = { {.irq = CPU_RST, .name = "RST", .desc = "[CPU] CPU Restart"}, }; -void __init init_IRQ(void) -{ - BUILD_BUG_ON(ARRAY_SIZE(irqclass_sub_desc) != NR_ARCH_IRQS); - init_cio_interrupts(); - init_airq_interrupts(); - init_ext_interrupts(); -} - void do_IRQ(struct pt_regs *regs, int irq) { struct pt_regs *old_regs; @@ -294,12 +286,7 @@ static irqreturn_t do_ext_interrupt(int irq, void *dummy) return IRQ_HANDLED; } -static struct irqaction external_interrupt = { - .name = "EXT", - .handler = do_ext_interrupt, -}; - -void __init init_ext_interrupts(void) +static void __init init_ext_interrupts(void) { int idx; @@ -308,7 +295,16 @@ void __init init_ext_interrupts(void) irq_set_chip_and_handler(EXT_INTERRUPT, &dummy_irq_chip, handle_percpu_irq); - setup_irq(EXT_INTERRUPT, &external_interrupt); + if (request_irq(EXT_INTERRUPT, do_ext_interrupt, 0, "EXT", NULL)) + panic("Failed to register EXT interrupt\n"); +} + +void __init init_IRQ(void) +{ + BUILD_BUG_ON(ARRAY_SIZE(irqclass_sub_desc) != NR_ARCH_IRQS); + init_cio_interrupts(); + init_airq_interrupts(); + init_ext_interrupts(); } static DEFINE_SPINLOCK(irq_subclass_lock); diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index cb8b1cc285c9..3a854cb5a4c6 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -14,7 +14,6 @@ #include <linux/reboot.h> #include <linux/ftrace.h> #include <linux/debug_locks.h> -#include <linux/suspend.h> #include <asm/cio.h> #include <asm/setup.h> #include <asm/pgtable.h> @@ -39,36 +38,6 @@ extern const unsigned long long relocate_kernel_len; #ifdef CONFIG_CRASH_DUMP /* - * PM notifier callback for kdump - */ -static int machine_kdump_pm_cb(struct notifier_block *nb, unsigned long action, - void *ptr) -{ - switch (action) { - case PM_SUSPEND_PREPARE: - case PM_HIBERNATION_PREPARE: - if (kexec_crash_image) - arch_kexec_unprotect_crashkres(); - break; - case PM_POST_SUSPEND: - case PM_POST_HIBERNATION: - if (kexec_crash_image) - arch_kexec_protect_crashkres(); - break; - default: - return NOTIFY_DONE; - } - return NOTIFY_OK; -} - -static int __init machine_kdump_pm_init(void) -{ - pm_notifier(machine_kdump_pm_cb, 0); - return 0; -} -arch_initcall(machine_kdump_pm_init); - -/* * Reset the system, copy boot CPU registers to absolute zero, * and jump to the kdump image */ diff --git a/arch/s390/kernel/perf_cpum_cf_events.c b/arch/s390/kernel/perf_cpum_cf_events.c index 8b33e03e47b8..1e3df52b2b65 100644 --- a/arch/s390/kernel/perf_cpum_cf_events.c +++ b/arch/s390/kernel/perf_cpum_cf_events.c @@ -238,6 +238,64 @@ CPUMF_EVENT_ATTR(cf_z14, TX_C_TABORT_SPECIAL, 0x00f5); CPUMF_EVENT_ATTR(cf_z14, MT_DIAG_CYCLES_ONE_THR_ACTIVE, 0x01c0); CPUMF_EVENT_ATTR(cf_z14, MT_DIAG_CYCLES_TWO_THR_ACTIVE, 0x01c1); +CPUMF_EVENT_ATTR(cf_z15, L1D_RO_EXCL_WRITES, 0x0080); +CPUMF_EVENT_ATTR(cf_z15, DTLB2_WRITES, 0x0081); +CPUMF_EVENT_ATTR(cf_z15, DTLB2_MISSES, 0x0082); +CPUMF_EVENT_ATTR(cf_z15, DTLB2_HPAGE_WRITES, 0x0083); +CPUMF_EVENT_ATTR(cf_z15, DTLB2_GPAGE_WRITES, 0x0084); +CPUMF_EVENT_ATTR(cf_z15, L1D_L2D_SOURCED_WRITES, 0x0085); +CPUMF_EVENT_ATTR(cf_z15, ITLB2_WRITES, 0x0086); +CPUMF_EVENT_ATTR(cf_z15, ITLB2_MISSES, 0x0087); +CPUMF_EVENT_ATTR(cf_z15, L1I_L2I_SOURCED_WRITES, 0x0088); +CPUMF_EVENT_ATTR(cf_z15, TLB2_PTE_WRITES, 0x0089); +CPUMF_EVENT_ATTR(cf_z15, TLB2_CRSTE_WRITES, 0x008a); +CPUMF_EVENT_ATTR(cf_z15, TLB2_ENGINES_BUSY, 0x008b); +CPUMF_EVENT_ATTR(cf_z15, TX_C_TEND, 0x008c); +CPUMF_EVENT_ATTR(cf_z15, TX_NC_TEND, 0x008d); +CPUMF_EVENT_ATTR(cf_z15, L1C_TLB2_MISSES, 0x008f); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES, 0x0090); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_MEMORY_SOURCED_WRITES, 0x0091); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_IV, 0x0092); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES, 0x0093); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONCLUSTER_MEMORY_SOURCED_WRITES, 0x0094); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES_IV, 0x0095); +CPUMF_EVENT_ATTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES, 0x0096); +CPUMF_EVENT_ATTR(cf_z15, L1D_OFFCLUSTER_MEMORY_SOURCED_WRITES, 0x0097); +CPUMF_EVENT_ATTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES_IV, 0x0098); +CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES, 0x0099); +CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_MEMORY_SOURCED_WRITES, 0x009a); +CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES_IV, 0x009b); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONDRAWER_L4_SOURCED_WRITES, 0x009c); +CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_L4_SOURCED_WRITES, 0x009d); +CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_RO, 0x009e); +CPUMF_EVENT_ATTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES, 0x00a2); +CPUMF_EVENT_ATTR(cf_z15, L1I_ONCHIP_MEMORY_SOURCED_WRITES, 0x00a3); +CPUMF_EVENT_ATTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES_IV, 0x00a4); +CPUMF_EVENT_ATTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES, 0x00a5); +CPUMF_EVENT_ATTR(cf_z15, L1I_ONCLUSTER_MEMORY_SOURCED_WRITES, 0x00a6); +CPUMF_EVENT_ATTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES_IV, 0x00a7); +CPUMF_EVENT_ATTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES, 0x00a8); +CPUMF_EVENT_ATTR(cf_z15, L1I_OFFCLUSTER_MEMORY_SOURCED_WRITES, 0x00a9); +CPUMF_EVENT_ATTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES_IV, 0x00aa); +CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES, 0x00ab); +CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_MEMORY_SOURCED_WRITES, 0x00ac); +CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES_IV, 0x00ad); +CPUMF_EVENT_ATTR(cf_z15, L1I_ONDRAWER_L4_SOURCED_WRITES, 0x00ae); +CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_L4_SOURCED_WRITES, 0x00af); +CPUMF_EVENT_ATTR(cf_z15, BCD_DFP_EXECUTION_SLOTS, 0x00e0); +CPUMF_EVENT_ATTR(cf_z15, VX_BCD_EXECUTION_SLOTS, 0x00e1); +CPUMF_EVENT_ATTR(cf_z15, DECIMAL_INSTRUCTIONS, 0x00e2); +CPUMF_EVENT_ATTR(cf_z15, LAST_HOST_TRANSLATIONS, 0x00e8); +CPUMF_EVENT_ATTR(cf_z15, TX_NC_TABORT, 0x00f3); +CPUMF_EVENT_ATTR(cf_z15, TX_C_TABORT_NO_SPECIAL, 0x00f4); +CPUMF_EVENT_ATTR(cf_z15, TX_C_TABORT_SPECIAL, 0x00f5); +CPUMF_EVENT_ATTR(cf_z15, DFLT_ACCESS, 0x00f7); +CPUMF_EVENT_ATTR(cf_z15, DFLT_CYCLES, 0x00fc); +CPUMF_EVENT_ATTR(cf_z15, DFLT_CC, 0x00108); +CPUMF_EVENT_ATTR(cf_z15, DFLT_CCERROR, 0x00109); +CPUMF_EVENT_ATTR(cf_z15, MT_DIAG_CYCLES_ONE_THR_ACTIVE, 0x01c0); +CPUMF_EVENT_ATTR(cf_z15, MT_DIAG_CYCLES_TWO_THR_ACTIVE, 0x01c1); + static struct attribute *cpumcf_fvn1_pmu_event_attr[] __initdata = { CPUMF_EVENT_PTR(cf_fvn1, CPU_CYCLES), CPUMF_EVENT_PTR(cf_fvn1, INSTRUCTIONS), @@ -516,6 +574,67 @@ static struct attribute *cpumcf_z14_pmu_event_attr[] __initdata = { NULL, }; +static struct attribute *cpumcf_z15_pmu_event_attr[] __initdata = { + CPUMF_EVENT_PTR(cf_z15, L1D_RO_EXCL_WRITES), + CPUMF_EVENT_PTR(cf_z15, DTLB2_WRITES), + CPUMF_EVENT_PTR(cf_z15, DTLB2_MISSES), + CPUMF_EVENT_PTR(cf_z15, DTLB2_HPAGE_WRITES), + CPUMF_EVENT_PTR(cf_z15, DTLB2_GPAGE_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_L2D_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, ITLB2_WRITES), + CPUMF_EVENT_PTR(cf_z15, ITLB2_MISSES), + CPUMF_EVENT_PTR(cf_z15, L1I_L2I_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, TLB2_PTE_WRITES), + CPUMF_EVENT_PTR(cf_z15, TLB2_CRSTE_WRITES), + CPUMF_EVENT_PTR(cf_z15, TLB2_ENGINES_BUSY), + CPUMF_EVENT_PTR(cf_z15, TX_C_TEND), + CPUMF_EVENT_PTR(cf_z15, TX_NC_TEND), + CPUMF_EVENT_PTR(cf_z15, L1C_TLB2_MISSES), + CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_ONCLUSTER_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_OFFCLUSTER_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1D_ONDRAWER_L4_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_L4_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_RO), + CPUMF_EVENT_PTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_ONCHIP_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_ONCLUSTER_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_OFFCLUSTER_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_MEMORY_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES_IV), + CPUMF_EVENT_PTR(cf_z15, L1I_ONDRAWER_L4_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_L4_SOURCED_WRITES), + CPUMF_EVENT_PTR(cf_z15, BCD_DFP_EXECUTION_SLOTS), + CPUMF_EVENT_PTR(cf_z15, VX_BCD_EXECUTION_SLOTS), + CPUMF_EVENT_PTR(cf_z15, DECIMAL_INSTRUCTIONS), + CPUMF_EVENT_PTR(cf_z15, LAST_HOST_TRANSLATIONS), + CPUMF_EVENT_PTR(cf_z15, TX_NC_TABORT), + CPUMF_EVENT_PTR(cf_z15, TX_C_TABORT_NO_SPECIAL), + CPUMF_EVENT_PTR(cf_z15, TX_C_TABORT_SPECIAL), + CPUMF_EVENT_PTR(cf_z15, DFLT_ACCESS), + CPUMF_EVENT_PTR(cf_z15, DFLT_CYCLES), + CPUMF_EVENT_PTR(cf_z15, DFLT_CC), + CPUMF_EVENT_PTR(cf_z15, DFLT_CCERROR), + CPUMF_EVENT_PTR(cf_z15, MT_DIAG_CYCLES_ONE_THR_ACTIVE), + CPUMF_EVENT_PTR(cf_z15, MT_DIAG_CYCLES_TWO_THR_ACTIVE), + NULL, +}; + /* END: CPUM_CF COUNTER DEFINITIONS ===================================== */ static struct attribute_group cpumcf_pmu_events_group = { @@ -624,9 +743,11 @@ __init const struct attribute_group **cpumf_cf_event_group(void) break; case 0x3906: case 0x3907: + model = cpumcf_z14_pmu_event_attr; + break; case 0x8561: case 0x8562: - model = cpumcf_z14_pmu_event_attr; + model = cpumcf_z15_pmu_event_attr; break; default: model = none; diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index b095b1c78987..85a711d783eb 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -372,28 +372,33 @@ static void deallocate_buffers(struct cpu_hw_sf *cpuhw) static int allocate_buffers(struct cpu_hw_sf *cpuhw, struct hw_perf_event *hwc) { - unsigned long n_sdb, freq, factor; + unsigned long n_sdb, freq; size_t sample_size; /* Calculate sampling buffers using 4K pages * - * 1. Determine the sample data size which depends on the used - * sampling functions, for example, basic-sampling or - * basic-sampling with diagnostic-sampling. + * 1. The sampling size is 32 bytes for basic sampling. This size + * is the same for all machine types. Diagnostic + * sampling uses auxlilary data buffer setup which provides the + * memory for SDBs using linux common code auxiliary trace + * setup. * - * 2. Use the sampling frequency as input. The sampling buffer is - * designed for almost one second. This can be adjusted through - * the "factor" variable. - * In any case, alloc_sampling_buffer() sets the Alert Request + * 2. Function alloc_sampling_buffer() sets the Alert Request * Control indicator to trigger a measurement-alert to harvest - * sample-data-blocks (sdb). + * sample-data-blocks (SDB). This is done per SDB. This + * measurement alert interrupt fires quick enough to handle + * one SDB, on very high frequency and work loads there might + * be 2 to 3 SBDs available for sample processing. + * Currently there is no need for setup alert request on every + * n-th page. This is counterproductive as one IRQ triggers + * a very high number of samples to be processed at one IRQ. * - * 3. Compute the number of sample-data-blocks and ensure a minimum - * of CPUM_SF_MIN_SDB. Also ensure the upper limit does not - * exceed a "calculated" maximum. The symbolic maximum is - * designed for basic-sampling only and needs to be increased if - * diagnostic-sampling is active. - * See also the remarks for these symbolic constants. + * 3. Use the sampling frequency as input. + * Compute the number of SDBs and ensure a minimum + * of CPUM_SF_MIN_SDB. Depending on frequency add some more + * SDBs to handle a higher sampling rate. + * Use a minimum of CPUM_SF_MIN_SDB and allow for 100 samples + * (one SDB) for every 10000 HZ frequency increment. * * 4. Compute the number of sample-data-block-tables (SDBT) and * ensure a minimum of CPUM_SF_MIN_SDBT (one table can manage up @@ -401,10 +406,7 @@ static int allocate_buffers(struct cpu_hw_sf *cpuhw, struct hw_perf_event *hwc) */ sample_size = sizeof(struct hws_basic_entry); freq = sample_rate_to_freq(&cpuhw->qsi, SAMPL_RATE(hwc)); - factor = 1; - n_sdb = DIV_ROUND_UP(freq, factor * ((PAGE_SIZE-64) / sample_size)); - if (n_sdb < CPUM_SF_MIN_SDB) - n_sdb = CPUM_SF_MIN_SDB; + n_sdb = CPUM_SF_MIN_SDB + DIV_ROUND_UP(freq, 10000); /* If there is already a sampling buffer allocated, it is very likely * that the sampling facility is enabled too. If the event to be @@ -1576,6 +1578,7 @@ static void hw_collect_aux(struct cpu_hw_sf *cpuhw) unsigned long range = 0, size; unsigned long long overflow = 0; struct perf_output_handle *handle = &cpuhw->handle; + unsigned long num_sdb; aux = perf_get_aux(handle); if (WARN_ON_ONCE(!aux)) @@ -1587,13 +1590,14 @@ static void hw_collect_aux(struct cpu_hw_sf *cpuhw) size >> PAGE_SHIFT); perf_aux_output_end(handle, size); + num_sdb = aux->sfb.num_sdb; while (!done) { /* Get an output handle */ aux = perf_aux_output_begin(handle, cpuhw->event); if (handle->size == 0) { pr_err("The AUX buffer with %lu pages for the " "diagnostic-sampling mode is full\n", - aux->sfb.num_sdb); + num_sdb); debug_sprintf_event(sfdbg, 1, "%s: AUX buffer used up\n", __func__); diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 6ccef5f29761..eb6e23ad15a2 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -106,6 +106,7 @@ int copy_thread_tls(unsigned long clone_flags, unsigned long new_stackp, p->thread.system_timer = 0; p->thread.hardirq_timer = 0; p->thread.softirq_timer = 0; + p->thread.last_break = 1; frame->sf.back_chain = 0; /* new return point is ret_from_fork */ diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index 6ebc2117c66c..c92d04f876cb 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -151,10 +151,35 @@ static void show_cpu_summary(struct seq_file *m, void *v) } } +static void show_cpu_topology(struct seq_file *m, unsigned long n) +{ +#ifdef CONFIG_SCHED_TOPOLOGY + seq_printf(m, "physical id : %d\n", topology_physical_package_id(n)); + seq_printf(m, "core id : %d\n", topology_core_id(n)); + seq_printf(m, "book id : %d\n", topology_book_id(n)); + seq_printf(m, "drawer id : %d\n", topology_drawer_id(n)); + seq_printf(m, "dedicated : %d\n", topology_cpu_dedicated(n)); + seq_printf(m, "address : %d\n", smp_cpu_get_cpu_address(n)); + seq_printf(m, "siblings : %d\n", cpumask_weight(topology_core_cpumask(n))); + seq_printf(m, "cpu cores : %d\n", topology_booted_cores(n)); +#endif /* CONFIG_SCHED_TOPOLOGY */ +} + +static void show_cpu_ids(struct seq_file *m, unsigned long n) +{ + struct cpuid *id = &per_cpu(cpu_info.cpu_id, n); + + seq_printf(m, "version : %02X\n", id->version); + seq_printf(m, "identification : %06X\n", id->ident); + seq_printf(m, "machine : %04X\n", id->machine); +} + static void show_cpu_mhz(struct seq_file *m, unsigned long n) { struct cpu_info *c = per_cpu_ptr(&cpu_info, n); + if (!machine_has_cpu_mhz) + return; seq_printf(m, "cpu MHz dynamic : %d\n", c->cpu_mhz_dynamic); seq_printf(m, "cpu MHz static : %d\n", c->cpu_mhz_static); } @@ -165,12 +190,13 @@ static void show_cpu_mhz(struct seq_file *m, unsigned long n) static int show_cpuinfo(struct seq_file *m, void *v) { unsigned long n = (unsigned long) v - 1; + unsigned long first = cpumask_first(cpu_online_mask); - if (!n) + if (n == first) show_cpu_summary(m, v); - if (!machine_has_cpu_mhz) - return 0; seq_printf(m, "\ncpu number : %ld\n", n); + show_cpu_topology(m, n); + show_cpu_ids(m, n); show_cpu_mhz(m, n); return 0; } @@ -179,6 +205,8 @@ static inline void *c_update(loff_t *pos) { if (*pos) *pos = cpumask_next(*pos - 1, cpu_online_mask); + else + *pos = cpumask_first(cpu_online_mask); return *pos < nr_cpu_ids ? (void *)*pos + 1 : NULL; } diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 1423090a2259..36445dd40fdb 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -73,6 +73,7 @@ #include <asm/nospec-branch.h> #include <asm/mem_detect.h> #include <asm/uv.h> +#include <asm/asm-offsets.h> #include "entry.h" /* @@ -446,6 +447,8 @@ static void __init setup_lowcore_dat_off(void) lc->spinlock_index = 0; arch_spin_lock_setup(0); lc->br_r1_trampoline = 0x07f1; /* br %r1 */ + lc->return_lpswe = gen_lpswe(__LC_RETURN_PSW); + lc->return_mcck_lpswe = gen_lpswe(__LC_RETURN_MCCK_PSW); set_prefix((u32)(unsigned long) lc); lowcore_ptr[0] = lc; @@ -789,6 +792,7 @@ static void __init memblock_add_mem_detect_info(void) memblock_physmem_add(start, end - start); } memblock_set_bottom_up(false); + memblock_set_node(0, ULONG_MAX, &memblock.memory, 0); memblock_dump_all(); } diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index e6fca5498e1f..b295090e2ce6 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -487,7 +487,7 @@ void do_signal(struct pt_regs *regs) regs->gprs[2] = -EINTR; break; } - /* fallthrough */ + fallthrough; case -ERESTARTNOINTR: regs->gprs[2] = regs->orig_gpr2; regs->psw.addr = @@ -514,7 +514,7 @@ void do_signal(struct pt_regs *regs) case -ERESTART_RESTARTBLOCK: /* Restart with sys_restart_syscall */ regs->int_code = __NR_restart_syscall; - /* fallthrough */ + fallthrough; case -ERESTARTNOHAND: case -ERESTARTSYS: case -ERESTARTNOINTR: diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index a08bd2522dd9..7eaabbab2213 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -212,6 +212,8 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu) lc->spinlock_lockval = arch_spin_lockval(cpu); lc->spinlock_index = 0; lc->br_r1_trampoline = 0x07f1; /* br %r1 */ + lc->return_lpswe = gen_lpswe(__LC_RETURN_PSW); + lc->return_mcck_lpswe = gen_lpswe(__LC_RETURN_MCCK_PSW); if (nmi_alloc_per_cpu(lc)) goto out_async; if (vdso_alloc_per_cpu(lc)) @@ -701,6 +703,11 @@ int smp_cpu_get_polarization(int cpu) return pcpu_devices[cpu].polarization; } +int smp_cpu_get_cpu_address(int cpu) +{ + return pcpu_devices[cpu].address; +} + static void __ref smp_get_core_info(struct sclp_core_info *info, int early) { static int use_sigp_detection; @@ -851,12 +858,13 @@ static void smp_init_secondary(void) init_cpu_timer(); vtime_init(); pfault_init(); - notify_cpu_starting(smp_processor_id()); + notify_cpu_starting(cpu); if (topology_cpu_dedicated(cpu)) set_cpu_flag(CIF_DEDICATED_CPU); else clear_cpu_flag(CIF_DEDICATED_CPU); - set_cpu_online(smp_processor_id(), true); + set_cpu_online(cpu, true); + update_cpu_masks(); inc_irq_stat(CPU_RST); local_irq_enable(); cpu_startup_entry(CPUHP_AP_ONLINE_IDLE); @@ -928,6 +936,7 @@ int __cpu_disable(void) /* Handle possible pending IPIs */ smp_handle_ext_call(); set_cpu_online(smp_processor_id(), false); + update_cpu_masks(); /* Disable pseudo page faults on this cpu. */ pfault_fini(); /* Disable interrupt sources via control register. */ diff --git a/arch/s390/kernel/suspend.c b/arch/s390/kernel/suspend.c deleted file mode 100644 index 75b7b307946e..000000000000 --- a/arch/s390/kernel/suspend.c +++ /dev/null @@ -1,240 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Suspend support specific for s390. - * - * Copyright IBM Corp. 2009 - * - * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com> - */ - -#include <linux/pfn.h> -#include <linux/suspend.h> -#include <linux/mm.h> -#include <linux/pci.h> -#include <asm/ctl_reg.h> -#include <asm/ipl.h> -#include <asm/cio.h> -#include <asm/sections.h> -#include "entry.h" - -/* - * The restore of the saved pages in an hibernation image will set - * the change and referenced bits in the storage key for each page. - * Overindication of the referenced bits after an hibernation cycle - * does not cause any harm but the overindication of the change bits - * would cause trouble. - * Use the ARCH_SAVE_PAGE_KEYS hooks to save the storage key of each - * page to the most significant byte of the associated page frame - * number in the hibernation image. - */ - -/* - * Key storage is allocated as a linked list of pages. - * The size of the keys array is (PAGE_SIZE - sizeof(long)) - */ -struct page_key_data { - struct page_key_data *next; - unsigned char data[]; -}; - -#define PAGE_KEY_DATA_SIZE (PAGE_SIZE - sizeof(struct page_key_data *)) - -static struct page_key_data *page_key_data; -static struct page_key_data *page_key_rp, *page_key_wp; -static unsigned long page_key_rx, page_key_wx; -unsigned long suspend_zero_pages; - -/* - * For each page in the hibernation image one additional byte is - * stored in the most significant byte of the page frame number. - * On suspend no additional memory is required but on resume the - * keys need to be memorized until the page data has been restored. - * Only then can the storage keys be set to their old state. - */ -unsigned long page_key_additional_pages(unsigned long pages) -{ - return DIV_ROUND_UP(pages, PAGE_KEY_DATA_SIZE); -} - -/* - * Free page_key_data list of arrays. - */ -void page_key_free(void) -{ - struct page_key_data *pkd; - - while (page_key_data) { - pkd = page_key_data; - page_key_data = pkd->next; - free_page((unsigned long) pkd); - } -} - -/* - * Allocate page_key_data list of arrays with enough room to store - * one byte for each page in the hibernation image. - */ -int page_key_alloc(unsigned long pages) -{ - struct page_key_data *pk; - unsigned long size; - - size = DIV_ROUND_UP(pages, PAGE_KEY_DATA_SIZE); - while (size--) { - pk = (struct page_key_data *) get_zeroed_page(GFP_KERNEL); - if (!pk) { - page_key_free(); - return -ENOMEM; - } - pk->next = page_key_data; - page_key_data = pk; - } - page_key_rp = page_key_wp = page_key_data; - page_key_rx = page_key_wx = 0; - return 0; -} - -/* - * Save the storage key into the upper 8 bits of the page frame number. - */ -void page_key_read(unsigned long *pfn) -{ - struct page *page; - unsigned long addr; - unsigned char key; - - page = pfn_to_page(*pfn); - addr = (unsigned long) page_address(page); - key = (unsigned char) page_get_storage_key(addr) & 0x7f; - if (arch_test_page_nodat(page)) - key |= 0x80; - *(unsigned char *) pfn = key; -} - -/* - * Extract the storage key from the upper 8 bits of the page frame number - * and store it in the page_key_data list of arrays. - */ -void page_key_memorize(unsigned long *pfn) -{ - page_key_wp->data[page_key_wx] = *(unsigned char *) pfn; - *(unsigned char *) pfn = 0; - if (++page_key_wx < PAGE_KEY_DATA_SIZE) - return; - page_key_wp = page_key_wp->next; - page_key_wx = 0; -} - -/* - * Get the next key from the page_key_data list of arrays and set the - * storage key of the page referred by @address. If @address refers to - * a "safe" page the swsusp_arch_resume code will transfer the storage - * key from the buffer page to the original page. - */ -void page_key_write(void *address) -{ - struct page *page; - unsigned char key; - - key = page_key_rp->data[page_key_rx]; - page_set_storage_key((unsigned long) address, key & 0x7f, 0); - page = virt_to_page(address); - if (key & 0x80) - arch_set_page_nodat(page, 0); - else - arch_set_page_dat(page, 0); - if (++page_key_rx >= PAGE_KEY_DATA_SIZE) - return; - page_key_rp = page_key_rp->next; - page_key_rx = 0; -} - -int pfn_is_nosave(unsigned long pfn) -{ - unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin)); - unsigned long nosave_end_pfn = PFN_DOWN(__pa(&__nosave_end)); - unsigned long end_rodata_pfn = PFN_DOWN(__pa(__end_rodata)) - 1; - unsigned long stext_pfn = PFN_DOWN(__pa(_stext)); - - /* Always save lowcore pages (LC protection might be enabled). */ - if (pfn <= LC_PAGES) - return 0; - if (pfn >= nosave_begin_pfn && pfn < nosave_end_pfn) - return 1; - /* Skip memory holes and read-only pages (DCSS, ...). */ - if (pfn >= stext_pfn && pfn <= end_rodata_pfn) - return 0; - if (tprot(PFN_PHYS(pfn))) - return 1; - return 0; -} - -/* - * PM notifier callback for suspend - */ -static int suspend_pm_cb(struct notifier_block *nb, unsigned long action, - void *ptr) -{ - switch (action) { - case PM_SUSPEND_PREPARE: - case PM_HIBERNATION_PREPARE: - suspend_zero_pages = __get_free_pages(GFP_KERNEL, LC_ORDER); - if (!suspend_zero_pages) - return NOTIFY_BAD; - break; - case PM_POST_SUSPEND: - case PM_POST_HIBERNATION: - free_pages(suspend_zero_pages, LC_ORDER); - break; - default: - return NOTIFY_DONE; - } - return NOTIFY_OK; -} - -static int __init suspend_pm_init(void) -{ - pm_notifier(suspend_pm_cb, 0); - return 0; -} -arch_initcall(suspend_pm_init); - -void save_processor_state(void) -{ - /* swsusp_arch_suspend() actually saves all cpu register contents. - * Machine checks must be disabled since swsusp_arch_suspend() stores - * register contents to their lowcore save areas. That's the same - * place where register contents on machine checks would be saved. - * To avoid register corruption disable machine checks. - * We must also disable machine checks in the new psw mask for - * program checks, since swsusp_arch_suspend() may generate program - * checks. Disabling machine checks for all other new psw masks is - * just paranoia. - */ - local_mcck_disable(); - /* Disable lowcore protection */ - __ctl_clear_bit(0,28); - S390_lowcore.external_new_psw.mask &= ~PSW_MASK_MCHECK; - S390_lowcore.svc_new_psw.mask &= ~PSW_MASK_MCHECK; - S390_lowcore.io_new_psw.mask &= ~PSW_MASK_MCHECK; - S390_lowcore.program_new_psw.mask &= ~PSW_MASK_MCHECK; -} - -void restore_processor_state(void) -{ - S390_lowcore.external_new_psw.mask |= PSW_MASK_MCHECK; - S390_lowcore.svc_new_psw.mask |= PSW_MASK_MCHECK; - S390_lowcore.io_new_psw.mask |= PSW_MASK_MCHECK; - S390_lowcore.program_new_psw.mask |= PSW_MASK_MCHECK; - /* Enable lowcore protection */ - __ctl_set_bit(0,28); - local_mcck_enable(); -} - -/* Called at the end of swsusp_arch_resume */ -void s390_early_resume(void) -{ - lgr_info_log(); - channel_subsystem_reinit(); - zpci_rescan(); -} diff --git a/arch/s390/kernel/swsusp.S b/arch/s390/kernel/swsusp.S deleted file mode 100644 index a7baf0b5f818..000000000000 --- a/arch/s390/kernel/swsusp.S +++ /dev/null @@ -1,276 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * S390 64-bit swsusp implementation - * - * Copyright IBM Corp. 2009 - * - * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com> - * Michael Holzheu <holzheu@linux.vnet.ibm.com> - */ - -#include <linux/linkage.h> -#include <asm/page.h> -#include <asm/ptrace.h> -#include <asm/thread_info.h> -#include <asm/asm-offsets.h> -#include <asm/nospec-insn.h> -#include <asm/sigp.h> - -/* - * Save register context in absolute 0 lowcore and call swsusp_save() to - * create in-memory kernel image. The context is saved in the designated - * "store status" memory locations (see POP). - * We return from this function twice. The first time during the suspend to - * disk process. The second time via the swsusp_arch_resume() function - * (see below) in the resume process. - * This function runs with disabled interrupts. - */ - GEN_BR_THUNK %r14 - - .section .text -ENTRY(swsusp_arch_suspend) - lg %r1,__LC_NODAT_STACK - stmg %r6,%r15,__SF_GPRS(%r1) - aghi %r1,-STACK_FRAME_OVERHEAD - stg %r15,__SF_BACKCHAIN(%r1) - lgr %r15,%r1 - - /* Store FPU registers */ - brasl %r14,save_fpu_regs - - /* Deactivate DAT */ - stnsm __SF_EMPTY(%r15),0xfb - - /* Store prefix register on stack */ - stpx __SF_EMPTY(%r15) - - /* Save prefix register contents for lowcore copy */ - llgf %r10,__SF_EMPTY(%r15) - - /* Get pointer to save area */ - lghi %r1,0x1000 - - /* Save CPU address */ - stap __LC_EXT_CPU_ADDR(%r0) - - /* Store registers */ - mvc 0x318(4,%r1),__SF_EMPTY(%r15) /* move prefix to lowcore */ - stam %a0,%a15,0x340(%r1) /* store access registers */ - stctg %c0,%c15,0x380(%r1) /* store control registers */ - stmg %r0,%r15,0x280(%r1) /* store general registers */ - - stpt 0x328(%r1) /* store timer */ - stck __SF_EMPTY(%r15) /* store clock */ - stckc 0x330(%r1) /* store clock comparator */ - - /* Update cputime accounting before going to sleep */ - lg %r0,__LC_LAST_UPDATE_TIMER - slg %r0,0x328(%r1) - alg %r0,__LC_SYSTEM_TIMER - stg %r0,__LC_SYSTEM_TIMER - mvc __LC_LAST_UPDATE_TIMER(8),0x328(%r1) - lg %r0,__LC_LAST_UPDATE_CLOCK - slg %r0,__SF_EMPTY(%r15) - alg %r0,__LC_STEAL_TIMER - stg %r0,__LC_STEAL_TIMER - mvc __LC_LAST_UPDATE_CLOCK(8),__SF_EMPTY(%r15) - - /* Activate DAT */ - stosm __SF_EMPTY(%r15),0x04 - - /* Set prefix page to zero */ - xc __SF_EMPTY(4,%r15),__SF_EMPTY(%r15) - spx __SF_EMPTY(%r15) - - /* Save absolute zero pages */ - larl %r2,suspend_zero_pages - lg %r2,0(%r2) - lghi %r4,0 - lghi %r3,2*PAGE_SIZE - lghi %r5,2*PAGE_SIZE -1: mvcle %r2,%r4,0 - jo 1b - - /* Copy lowcore to absolute zero lowcore */ - lghi %r2,0 - lgr %r4,%r10 - lghi %r3,2*PAGE_SIZE - lghi %r5,2*PAGE_SIZE -1: mvcle %r2,%r4,0 - jo 1b - - /* Save image */ - brasl %r14,swsusp_save - - /* Restore prefix register and return */ - lghi %r1,0x1000 - spx 0x318(%r1) - lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15) - lghi %r2,0 - BR_EX %r14 -ENDPROC(swsusp_arch_suspend) - -/* - * Restore saved memory image to correct place and restore register context. - * Then we return to the function that called swsusp_arch_suspend(). - * swsusp_arch_resume() runs with disabled interrupts. - */ -ENTRY(swsusp_arch_resume) - stmg %r6,%r15,__SF_GPRS(%r15) - lgr %r1,%r15 - aghi %r15,-STACK_FRAME_OVERHEAD - stg %r1,__SF_BACKCHAIN(%r15) - - /* Make all free pages stable */ - lghi %r2,1 - brasl %r14,arch_set_page_states - - /* Set prefix page to zero */ - xc __SF_EMPTY(4,%r15),__SF_EMPTY(%r15) - spx __SF_EMPTY(%r15) - - /* Deactivate DAT */ - stnsm __SF_EMPTY(%r15),0xfb - - /* Restore saved image */ - larl %r1,restore_pblist - lg %r1,0(%r1) - ltgr %r1,%r1 - jz 2f -0: - lg %r2,8(%r1) - lg %r4,0(%r1) - iske %r0,%r4 - lghi %r3,PAGE_SIZE - lghi %r5,PAGE_SIZE -1: - mvcle %r2,%r4,0 - jo 1b - lg %r2,8(%r1) - sske %r0,%r2 - lg %r1,16(%r1) - ltgr %r1,%r1 - jnz 0b -2: - ptlb /* flush tlb */ - - /* Reset System */ - larl %r1,.Lnew_pgm_check_psw - epsw %r2,%r3 - stm %r2,%r3,0(%r1) - mvc __LC_PGM_NEW_PSW(16,%r0),0(%r1) - larl %r1,__swsusp_reset_dma - lg %r1,0(%r1) - BASR_EX %r14,%r1 - larl %r1,smp_cpu_mt_shift - icm %r1,15,0(%r1) - jz smt_done - llgfr %r1,%r1 -smt_loop: - sigp %r1,%r0,SIGP_SET_MULTI_THREADING - brc 8,smt_done /* accepted */ - brc 2,smt_loop /* busy, try again */ -smt_done: - larl %r1,.Lnew_pgm_check_psw - lpswe 0(%r1) -pgm_check_entry: - - /* Switch to original suspend CPU */ - larl %r1,.Lresume_cpu /* Resume CPU address: r2 */ - stap 0(%r1) - llgh %r2,0(%r1) - llgh %r1,__LC_EXT_CPU_ADDR(%r0) /* Suspend CPU address: r1 */ - cgr %r1,%r2 - je restore_registers /* r1 = r2 -> nothing to do */ - larl %r4,.Lrestart_suspend_psw /* Set new restart PSW */ - mvc __LC_RST_NEW_PSW(16,%r0),0(%r4) -3: - sigp %r9,%r1,SIGP_INITIAL_CPU_RESET /* sigp initial cpu reset */ - brc 8,4f /* accepted */ - brc 2,3b /* busy, try again */ - - /* Suspend CPU not available -> panic */ - larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD - larl %r2,.Lpanic_string - brasl %r14,sclp_early_printk_force - larl %r3,.Ldisabled_wait_31 - lpsw 0(%r3) -4: - /* Switch to suspend CPU */ - sigp %r9,%r1,SIGP_RESTART /* sigp restart to suspend CPU */ - brc 2,4b /* busy, try again */ -5: - sigp %r9,%r2,SIGP_STOP /* sigp stop to current resume CPU */ - brc 2,5b /* busy, try again */ -6: j 6b - -restart_suspend: - larl %r1,.Lresume_cpu - llgh %r2,0(%r1) -7: - sigp %r9,%r2,SIGP_SENSE /* sigp sense, wait for resume CPU */ - brc 8,7b /* accepted, status 0, still running */ - brc 2,7b /* busy, try again */ - tmll %r9,0x40 /* Test if resume CPU is stopped */ - jz 7b - -restore_registers: - /* Restore registers */ - lghi %r13,0x1000 /* %r1 = pointer to save area */ - - /* Ignore time spent in suspended state. */ - llgf %r1,0x318(%r13) - stck __LC_LAST_UPDATE_CLOCK(%r1) - spt 0x328(%r13) /* reprogram timer */ - //sckc 0x330(%r13) /* set clock comparator */ - - lctlg %c0,%c15,0x380(%r13) /* load control registers */ - lam %a0,%a15,0x340(%r13) /* load access registers */ - - /* Load old stack */ - lg %r15,0x2f8(%r13) - - /* Save prefix register */ - mvc __SF_EMPTY(4,%r15),0x318(%r13) - - /* Restore absolute zero pages */ - lghi %r2,0 - larl %r4,suspend_zero_pages - lg %r4,0(%r4) - lghi %r3,2*PAGE_SIZE - lghi %r5,2*PAGE_SIZE -1: mvcle %r2,%r4,0 - jo 1b - - /* Restore prefix register */ - spx __SF_EMPTY(%r15) - - /* Activate DAT */ - stosm __SF_EMPTY(%r15),0x04 - - /* Make all free pages unstable */ - lghi %r2,0 - brasl %r14,arch_set_page_states - - /* Call arch specific early resume code */ - brasl %r14,s390_early_resume - - /* Return 0 */ - lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15) - lghi %r2,0 - BR_EX %r14 -ENDPROC(swsusp_arch_resume) - - .section .data..nosave,"aw",@progbits - .align 8 -.Ldisabled_wait_31: - .long 0x000a0000,0x00000000 -.Lpanic_string: - .asciz "Resume not possible because suspend CPU is no longer available\n" - .align 8 -.Lrestart_suspend_psw: - .quad 0x0000000180000000,restart_suspend -.Lnew_pgm_check_psw: - .quad 0,pgm_check_entry -.Lresume_cpu: - .byte 0,0 diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 3627953007ed..5f70cefc13e4 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -26,7 +26,6 @@ #include <linux/nodemask.h> #include <linux/node.h> #include <asm/sysinfo.h> -#include <asm/numa.h> #define PTF_HORIZONTAL (0UL) #define PTF_VERTICAL (1UL) @@ -63,8 +62,6 @@ static struct mask_info drawer_info; struct cpu_topology_s390 cpu_topology[NR_CPUS]; EXPORT_SYMBOL_GPL(cpu_topology); -cpumask_t cpus_with_topology; - static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu) { cpumask_t mask; @@ -86,11 +83,12 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu) cpumask_copy(&mask, cpu_present_mask); break; default: - /* fallthrough */ + fallthrough; case TOPOLOGY_MODE_SINGLE: cpumask_copy(&mask, cpumask_of(cpu)); break; } + cpumask_and(&mask, &mask, cpu_online_mask); return mask; } @@ -106,6 +104,7 @@ static cpumask_t cpu_thread_map(unsigned int cpu) for (i = 0; i <= smp_cpu_mtid; i++) if (cpu_present(cpu + i)) cpumask_set_cpu(cpu + i, &mask); + cpumask_and(&mask, &mask, cpu_online_mask); return mask; } @@ -138,7 +137,6 @@ static void add_cpus_to_mask(struct topology_core *tl_core, cpumask_set_cpu(lcpu + i, &drawer->mask); cpumask_set_cpu(lcpu + i, &book->mask); cpumask_set_cpu(lcpu + i, &socket->mask); - cpumask_set_cpu(lcpu + i, &cpus_with_topology); smp_cpu_set_polarization(lcpu + i, tl_core->pp); } } @@ -245,10 +243,10 @@ int topology_set_cpu_management(int fc) return rc; } -static void update_cpu_masks(void) +void update_cpu_masks(void) { - struct cpu_topology_s390 *topo; - int cpu, id; + struct cpu_topology_s390 *topo, *topo_package, *topo_sibling; + int cpu, sibling, pkg_first, smt_first, id; for_each_possible_cpu(cpu) { topo = &cpu_topology[cpu]; @@ -256,6 +254,7 @@ static void update_cpu_masks(void) topo->core_mask = cpu_group_map(&socket_info, cpu); topo->book_mask = cpu_group_map(&book_info, cpu); topo->drawer_mask = cpu_group_map(&drawer_info, cpu); + topo->booted_cores = 0; if (topology_mode != TOPOLOGY_MODE_HW) { id = topology_mode == TOPOLOGY_MODE_PACKAGE ? 0 : cpu; topo->thread_id = cpu; @@ -263,11 +262,23 @@ static void update_cpu_masks(void) topo->socket_id = id; topo->book_id = id; topo->drawer_id = id; - if (cpu_present(cpu)) - cpumask_set_cpu(cpu, &cpus_with_topology); } } - numa_update_cpu_topology(); + for_each_online_cpu(cpu) { + topo = &cpu_topology[cpu]; + pkg_first = cpumask_first(&topo->core_mask); + topo_package = &cpu_topology[pkg_first]; + if (cpu == pkg_first) { + for_each_cpu(sibling, &topo->core_mask) { + topo_sibling = &cpu_topology[sibling]; + smt_first = cpumask_first(&topo_sibling->thread_mask); + if (sibling == smt_first) + topo_package->booted_cores++; + } + } else { + topo->booted_cores = topo_package->booted_cores; + } + } } void store_topology(struct sysinfo_15_1_x *info) @@ -289,7 +300,6 @@ static int __arch_update_cpu_topology(void) int rc = 0; mutex_lock(&smp_cpu_state_mutex); - cpumask_clear(&cpus_with_topology); if (MACHINE_HAS_TOPOLOGY) { rc = 1; store_topology(info); diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index dc75588d7894..ff9cc4c3290e 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -271,7 +271,7 @@ void kernel_stack_overflow(struct pt_regs *regs) } NOKPROBE_SYMBOL(kernel_stack_overflow); -static void test_monitor_call(void) +static void __init test_monitor_call(void) { int val = 1; diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c index a51c892f14f3..ae989b740376 100644 --- a/arch/s390/mm/cmm.c +++ b/arch/s390/mm/cmm.c @@ -19,7 +19,6 @@ #include <linux/swap.h> #include <linux/kthread.h> #include <linux/oom.h> -#include <linux/suspend.h> #include <linux/uaccess.h> #include <asm/pgalloc.h> @@ -49,7 +48,6 @@ static volatile long cmm_pages_target; static volatile long cmm_timed_pages_target; static long cmm_timeout_pages; static long cmm_timeout_seconds; -static int cmm_suspended; static struct cmm_page_array *cmm_page_list; static struct cmm_page_array *cmm_timed_page_list; @@ -151,9 +149,9 @@ static int cmm_thread(void *dummy) while (1) { rc = wait_event_interruptible(cmm_thread_wait, - (!cmm_suspended && (cmm_pages != cmm_pages_target || - cmm_timed_pages != cmm_timed_pages_target)) || - kthread_should_stop()); + cmm_pages != cmm_pages_target || + cmm_timed_pages != cmm_timed_pages_target || + kthread_should_stop()); if (kthread_should_stop() || rc == -ERESTARTSYS) { cmm_pages_target = cmm_pages; cmm_timed_pages_target = cmm_timed_pages; @@ -390,38 +388,6 @@ static void cmm_smsg_target(const char *from, char *msg) static struct ctl_table_header *cmm_sysctl_header; -static int cmm_suspend(void) -{ - cmm_suspended = 1; - cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list); - cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list); - return 0; -} - -static int cmm_resume(void) -{ - cmm_suspended = 0; - cmm_kick_thread(); - return 0; -} - -static int cmm_power_event(struct notifier_block *this, - unsigned long event, void *ptr) -{ - switch (event) { - case PM_POST_HIBERNATION: - return cmm_resume(); - case PM_HIBERNATION_PREPARE: - return cmm_suspend(); - default: - return NOTIFY_DONE; - } -} - -static struct notifier_block cmm_power_notifier = { - .notifier_call = cmm_power_event, -}; - static int __init cmm_init(void) { int rc = -ENOMEM; @@ -446,16 +412,11 @@ static int __init cmm_init(void) rc = register_oom_notifier(&cmm_oom_nb); if (rc < 0) goto out_oom_notify; - rc = register_pm_notifier(&cmm_power_notifier); - if (rc) - goto out_pm; cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread"); if (!IS_ERR(cmm_thread_ptr)) return 0; rc = PTR_ERR(cmm_thread_ptr); - unregister_pm_notifier(&cmm_power_notifier); -out_pm: unregister_oom_notifier(&cmm_oom_nb); out_oom_notify: #ifdef CONFIG_CMM_IUCV @@ -475,7 +436,6 @@ static void __exit cmm_exit(void) #ifdef CONFIG_CMM_IUCV smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target); #endif - unregister_pm_notifier(&cmm_power_notifier); unregister_oom_notifier(&cmm_oom_nb); kthread_stop(cmm_thread_ptr); del_timer_sync(&cmm_timer); diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 09bf7f2121ac..d56f67745e3e 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -45,11 +45,11 @@ #define __SUBCODE_MASK 0x0600 #define __PF_RES_FIELD 0x8000000000000000ULL -#define VM_FAULT_BADCONTEXT 0x010000 -#define VM_FAULT_BADMAP 0x020000 -#define VM_FAULT_BADACCESS 0x040000 -#define VM_FAULT_SIGNAL 0x080000 -#define VM_FAULT_PFAULT 0x100000 +#define VM_FAULT_BADCONTEXT ((__force vm_fault_t) 0x010000) +#define VM_FAULT_BADMAP ((__force vm_fault_t) 0x020000) +#define VM_FAULT_BADACCESS ((__force vm_fault_t) 0x040000) +#define VM_FAULT_SIGNAL ((__force vm_fault_t) 0x080000) +#define VM_FAULT_PFAULT ((__force vm_fault_t) 0x100000) enum fault_type { KERNEL_FAULT, @@ -123,7 +123,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address) if (*table & _REGION_ENTRY_INVALID) goto out; table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN); - /* fallthrough */ + fallthrough; case _ASCE_TYPE_REGION2: table += (address & _REGION2_INDEX) >> _REGION2_SHIFT; if (bad_address(table)) @@ -132,7 +132,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address) if (*table & _REGION_ENTRY_INVALID) goto out; table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN); - /* fallthrough */ + fallthrough; case _ASCE_TYPE_REGION3: table += (address & _REGION3_INDEX) >> _REGION3_SHIFT; if (bad_address(table)) @@ -141,7 +141,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address) if (*table & (_REGION_ENTRY_INVALID | _REGION3_ENTRY_LARGE)) goto out; table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN); - /* fallthrough */ + fallthrough; case _ASCE_TYPE_SEGMENT: table += (address & _SEGMENT_INDEX) >> _SEGMENT_SHIFT; if (bad_address(table)) @@ -328,7 +328,7 @@ static noinline void do_fault_error(struct pt_regs *regs, int access, case VM_FAULT_BADACCESS: if (access == VM_EXEC && signal_return(regs) == 0) break; - /* fallthrough */ + fallthrough; case VM_FAULT_BADMAP: /* Bad memory access. Check if it is kernel or user space. */ if (user_mode(regs)) { @@ -338,9 +338,8 @@ static noinline void do_fault_error(struct pt_regs *regs, int access, do_sigsegv(regs, si_code); break; } - /* fallthrough */ + fallthrough; case VM_FAULT_BADCONTEXT: - /* fallthrough */ case VM_FAULT_PFAULT: do_no_context(regs); break; diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c index 5674710a4841..f01daddcbc5e 100644 --- a/arch/s390/mm/hugetlbpage.c +++ b/arch/s390/mm/hugetlbpage.c @@ -326,7 +326,6 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, struct hstate *h = hstate_file(file); struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - int rc; if (len & ~huge_page_mask(h)) return -EINVAL; @@ -353,15 +352,9 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, else addr = hugetlb_get_unmapped_area_topdown(file, addr, len, pgoff, flags); - if (addr & ~PAGE_MASK) + if (offset_in_page(addr)) return addr; check_asce_limit: - if (addr + len > current->mm->context.asce_limit && - addr + len <= TASK_SIZE) { - rc = crst_table_upgrade(mm, addr + len); - if (rc) - return (unsigned long) rc; - } - return addr; + return check_asce_limit(mm, addr, len); } diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index cbc718ba6d78..1b78f630a9ca 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -72,14 +72,13 @@ static inline unsigned long mmap_base(unsigned long rnd, return PAGE_ALIGN(STACK_TOP - gap - rnd); } -unsigned long -arch_get_unmapped_area(struct file *filp, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) +unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; struct vm_unmapped_area_info info; - int rc; if (len > TASK_SIZE - mmap_min_addr) return -ENOMEM; @@ -105,30 +104,20 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, info.align_mask = 0; info.align_offset = pgoff << PAGE_SHIFT; addr = vm_unmapped_area(&info); - if (addr & ~PAGE_MASK) + if (offset_in_page(addr)) return addr; check_asce_limit: - if (addr + len > current->mm->context.asce_limit && - addr + len <= TASK_SIZE) { - rc = crst_table_upgrade(mm, addr + len); - if (rc) - return (unsigned long) rc; - } - - return addr; + return check_asce_limit(mm, addr, len); } -unsigned long -arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, - const unsigned long len, const unsigned long pgoff, - const unsigned long flags) +unsigned long arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags) { struct vm_area_struct *vma; struct mm_struct *mm = current->mm; - unsigned long addr = addr0; struct vm_unmapped_area_info info; - int rc; /* requested length too big for entire address space */ if (len > TASK_SIZE - mmap_min_addr) @@ -163,25 +152,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, * can happen with large stack limits and large mmap() * allocations. */ - if (addr & ~PAGE_MASK) { + if (offset_in_page(addr)) { VM_BUG_ON(addr != -ENOMEM); info.flags = 0; info.low_limit = TASK_UNMAPPED_BASE; info.high_limit = TASK_SIZE; addr = vm_unmapped_area(&info); - if (addr & ~PAGE_MASK) + if (offset_in_page(addr)) return addr; } check_asce_limit: - if (addr + len > current->mm->context.asce_limit && - addr + len <= TASK_SIZE) { - rc = crst_table_upgrade(mm, addr + len); - if (rc) - return (unsigned long) rc; - } - - return addr; + return check_asce_limit(mm, addr, len); } /* diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c index f8c6faab41f4..e22c06d5f206 100644 --- a/arch/s390/mm/pageattr.c +++ b/arch/s390/mm/pageattr.c @@ -367,20 +367,4 @@ void __kernel_map_pages(struct page *page, int numpages, int enable) } } -#ifdef CONFIG_HIBERNATION -bool kernel_page_present(struct page *page) -{ - unsigned long addr; - int cc; - - addr = page_to_phys(page); - asm volatile( - " lra %1,0(%1)\n" - " ipm %0\n" - " srl %0,28" - : "=d" (cc), "+a" (addr) : : "cc"); - return cc == 0; -} -#endif /* CONFIG_HIBERNATION */ - #endif /* CONFIG_DEBUG_PAGEALLOC */ diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c index 3dd253f81a77..498c98a312f4 100644 --- a/arch/s390/mm/pgalloc.c +++ b/arch/s390/mm/pgalloc.c @@ -77,67 +77,65 @@ static void __crst_table_upgrade(void *arg) int crst_table_upgrade(struct mm_struct *mm, unsigned long end) { - unsigned long *table, *pgd; - int rc, notify; + unsigned long *pgd = NULL, *p4d = NULL, *__pgd; + unsigned long asce_limit = mm->context.asce_limit; /* upgrade should only happen from 3 to 4, 3 to 5, or 4 to 5 levels */ - VM_BUG_ON(mm->context.asce_limit < _REGION2_SIZE); - rc = 0; - notify = 0; - while (mm->context.asce_limit < end) { - table = crst_table_alloc(mm); - if (!table) { - rc = -ENOMEM; - break; - } - spin_lock_bh(&mm->page_table_lock); - pgd = (unsigned long *) mm->pgd; - if (mm->context.asce_limit == _REGION2_SIZE) { - crst_table_init(table, _REGION2_ENTRY_EMPTY); - p4d_populate(mm, (p4d_t *) table, (pud_t *) pgd); - mm->pgd = (pgd_t *) table; - mm->context.asce_limit = _REGION1_SIZE; - mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | - _ASCE_USER_BITS | _ASCE_TYPE_REGION2; - mm_inc_nr_puds(mm); - } else { - crst_table_init(table, _REGION1_ENTRY_EMPTY); - pgd_populate(mm, (pgd_t *) table, (p4d_t *) pgd); - mm->pgd = (pgd_t *) table; - mm->context.asce_limit = -PAGE_SIZE; - mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | - _ASCE_USER_BITS | _ASCE_TYPE_REGION1; - } - notify = 1; - spin_unlock_bh(&mm->page_table_lock); - } - if (notify) - on_each_cpu(__crst_table_upgrade, mm, 0); - return rc; -} + VM_BUG_ON(asce_limit < _REGION2_SIZE); -void crst_table_downgrade(struct mm_struct *mm) -{ - pgd_t *pgd; + if (end <= asce_limit) + return 0; - /* downgrade should only happen from 3 to 2 levels (compat only) */ - VM_BUG_ON(mm->context.asce_limit != _REGION2_SIZE); + if (asce_limit == _REGION2_SIZE) { + p4d = crst_table_alloc(mm); + if (unlikely(!p4d)) + goto err_p4d; + crst_table_init(p4d, _REGION2_ENTRY_EMPTY); + } + if (end > _REGION1_SIZE) { + pgd = crst_table_alloc(mm); + if (unlikely(!pgd)) + goto err_pgd; + crst_table_init(pgd, _REGION1_ENTRY_EMPTY); + } - if (current->active_mm == mm) { - clear_user_asce(); - __tlb_flush_mm(mm); + spin_lock_bh(&mm->page_table_lock); + + /* + * This routine gets called with mmap_sem lock held and there is + * no reason to optimize for the case of otherwise. However, if + * that would ever change, the below check will let us know. + */ + VM_BUG_ON(asce_limit != mm->context.asce_limit); + + if (p4d) { + __pgd = (unsigned long *) mm->pgd; + p4d_populate(mm, (p4d_t *) p4d, (pud_t *) __pgd); + mm->pgd = (pgd_t *) p4d; + mm->context.asce_limit = _REGION1_SIZE; + mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | + _ASCE_USER_BITS | _ASCE_TYPE_REGION2; + mm_inc_nr_puds(mm); + } + if (pgd) { + __pgd = (unsigned long *) mm->pgd; + pgd_populate(mm, (pgd_t *) pgd, (p4d_t *) __pgd); + mm->pgd = (pgd_t *) pgd; + mm->context.asce_limit = TASK_SIZE_MAX; + mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | + _ASCE_USER_BITS | _ASCE_TYPE_REGION1; } - pgd = mm->pgd; - mm_dec_nr_pmds(mm); - mm->pgd = (pgd_t *) (pgd_val(*pgd) & _REGION_ENTRY_ORIGIN); - mm->context.asce_limit = _REGION3_SIZE; - mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH | - _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT; - crst_table_free(mm, (unsigned long *) pgd); + spin_unlock_bh(&mm->page_table_lock); - if (current->active_mm == mm) - set_user_asce(mm); + on_each_cpu(__crst_table_upgrade, mm, 0); + + return 0; + +err_pgd: + crst_table_free(mm, p4d); +err_p4d: + return -ENOMEM; } static inline unsigned int atomic_xor_bits(atomic_t *v, unsigned int bits) @@ -304,7 +302,7 @@ void __tlb_remove_table(void *_table) mask >>= 24; if (mask != 0) break; - /* fallthrough */ + fallthrough; case 3: /* 4K page table with pgstes */ if (mask & 3) atomic_xor_bits(&page->_refcount, 3 << 24); @@ -529,7 +527,7 @@ void base_asce_free(unsigned long asce) base_region2_walk(table, 0, _REGION1_SIZE, 0); break; case _ASCE_TYPE_REGION1: - base_region1_walk(table, 0, -_PAGE_SIZE, 0); + base_region1_walk(table, 0, TASK_SIZE_MAX, 0); break; } base_crst_free(table); diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index b403fa14847d..f810930aff42 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -415,6 +415,10 @@ void __init vmem_map_init(void) SET_MEMORY_RO | SET_MEMORY_X); __set_memory(__stext_dma, (__etext_dma - __stext_dma) >> PAGE_SHIFT, SET_MEMORY_RO | SET_MEMORY_X); + + /* we need lowcore executable for our LPSWE instructions */ + set_memory_x(0, 1); + pr_info("Write protected kernel read-only data: %luk\n", (unsigned long)(__end_rodata - _stext) >> 10); } diff --git a/arch/s390/numa/Makefile b/arch/s390/numa/Makefile index 66c2dff74895..c89d26f4f77d 100644 --- a/arch/s390/numa/Makefile +++ b/arch/s390/numa/Makefile @@ -1,4 +1,2 @@ # SPDX-License-Identifier: GPL-2.0 obj-y += numa.o -obj-y += toptree.o -obj-$(CONFIG_NUMA_EMU) += mode_emu.o diff --git a/arch/s390/numa/mode_emu.c b/arch/s390/numa/mode_emu.c deleted file mode 100644 index 72d742bb2d17..000000000000 --- a/arch/s390/numa/mode_emu.c +++ /dev/null @@ -1,577 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * NUMA support for s390 - * - * NUMA emulation (aka fake NUMA) distributes the available memory to nodes - * without using real topology information about the physical memory of the - * machine. - * - * It distributes the available CPUs to nodes while respecting the original - * machine topology information. This is done by trying to avoid to separate - * CPUs which reside on the same book or even on the same MC. - * - * Because the current Linux scheduler code requires a stable cpu to node - * mapping, cores are pinned to nodes when the first CPU thread is set online. - * - * Copyright IBM Corp. 2015 - */ - -#define KMSG_COMPONENT "numa_emu" -#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt - -#include <linux/kernel.h> -#include <linux/cpumask.h> -#include <linux/memblock.h> -#include <linux/node.h> -#include <linux/memory.h> -#include <linux/slab.h> -#include <asm/smp.h> -#include <asm/topology.h> -#include "numa_mode.h" -#include "toptree.h" - -/* Distances between the different system components */ -#define DIST_EMPTY 0 -#define DIST_CORE 1 -#define DIST_MC 2 -#define DIST_BOOK 3 -#define DIST_DRAWER 4 -#define DIST_MAX 5 - -/* Node distance reported to common code */ -#define EMU_NODE_DIST 10 - -/* Node ID for free (not yet pinned) cores */ -#define NODE_ID_FREE -1 - -/* Different levels of toptree */ -enum toptree_level {CORE, MC, BOOK, DRAWER, NODE, TOPOLOGY}; - -/* The two toptree IDs */ -enum {TOPTREE_ID_PHYS, TOPTREE_ID_NUMA}; - -/* Number of NUMA nodes */ -static int emu_nodes = 1; -/* NUMA stripe size */ -static unsigned long emu_size; - -/* - * Node to core pinning information updates are protected by - * "sched_domains_mutex". - */ -static struct { - s32 to_node_id[CONFIG_NR_CPUS]; /* Pinned core to node mapping */ - int total; /* Total number of pinned cores */ - int per_node_target; /* Cores per node without extra cores */ - int per_node[MAX_NUMNODES]; /* Number of cores pinned to node */ -} *emu_cores; - -/* - * Pin a core to a node - */ -static void pin_core_to_node(int core_id, int node_id) -{ - if (emu_cores->to_node_id[core_id] == NODE_ID_FREE) { - emu_cores->per_node[node_id]++; - emu_cores->to_node_id[core_id] = node_id; - emu_cores->total++; - } else { - WARN_ON(emu_cores->to_node_id[core_id] != node_id); - } -} - -/* - * Number of pinned cores of a node - */ -static int cores_pinned(struct toptree *node) -{ - return emu_cores->per_node[node->id]; -} - -/* - * ID of the node where the core is pinned (or NODE_ID_FREE) - */ -static int core_pinned_to_node_id(struct toptree *core) -{ - return emu_cores->to_node_id[core->id]; -} - -/* - * Number of cores in the tree that are not yet pinned - */ -static int cores_free(struct toptree *tree) -{ - struct toptree *core; - int count = 0; - - toptree_for_each(core, tree, CORE) { - if (core_pinned_to_node_id(core) == NODE_ID_FREE) - count++; - } - return count; -} - -/* - * Return node of core - */ -static struct toptree *core_node(struct toptree *core) -{ - return core->parent->parent->parent->parent; -} - -/* - * Return drawer of core - */ -static struct toptree *core_drawer(struct toptree *core) -{ - return core->parent->parent->parent; -} - -/* - * Return book of core - */ -static struct toptree *core_book(struct toptree *core) -{ - return core->parent->parent; -} - -/* - * Return mc of core - */ -static struct toptree *core_mc(struct toptree *core) -{ - return core->parent; -} - -/* - * Distance between two cores - */ -static int dist_core_to_core(struct toptree *core1, struct toptree *core2) -{ - if (core_drawer(core1)->id != core_drawer(core2)->id) - return DIST_DRAWER; - if (core_book(core1)->id != core_book(core2)->id) - return DIST_BOOK; - if (core_mc(core1)->id != core_mc(core2)->id) - return DIST_MC; - /* Same core or sibling on same MC */ - return DIST_CORE; -} - -/* - * Distance of a node to a core - */ -static int dist_node_to_core(struct toptree *node, struct toptree *core) -{ - struct toptree *core_node; - int dist_min = DIST_MAX; - - toptree_for_each(core_node, node, CORE) - dist_min = min(dist_min, dist_core_to_core(core_node, core)); - return dist_min == DIST_MAX ? DIST_EMPTY : dist_min; -} - -/* - * Unify will delete empty nodes, therefore recreate nodes. - */ -static void toptree_unify_tree(struct toptree *tree) -{ - int nid; - - toptree_unify(tree); - for (nid = 0; nid < emu_nodes; nid++) - toptree_get_child(tree, nid); -} - -/* - * Find the best/nearest node for a given core and ensure that no node - * gets more than "emu_cores->per_node_target + extra" cores. - */ -static struct toptree *node_for_core(struct toptree *numa, struct toptree *core, - int extra) -{ - struct toptree *node, *node_best = NULL; - int dist_cur, dist_best, cores_target; - - cores_target = emu_cores->per_node_target + extra; - dist_best = DIST_MAX; - node_best = NULL; - toptree_for_each(node, numa, NODE) { - /* Already pinned cores must use their nodes */ - if (core_pinned_to_node_id(core) == node->id) { - node_best = node; - break; - } - /* Skip nodes that already have enough cores */ - if (cores_pinned(node) >= cores_target) - continue; - dist_cur = dist_node_to_core(node, core); - if (dist_cur < dist_best) { - dist_best = dist_cur; - node_best = node; - } - } - return node_best; -} - -/* - * Find the best node for each core with respect to "extra" core count - */ -static void toptree_to_numa_single(struct toptree *numa, struct toptree *phys, - int extra) -{ - struct toptree *node, *core, *tmp; - - toptree_for_each_safe(core, tmp, phys, CORE) { - node = node_for_core(numa, core, extra); - if (!node) - return; - toptree_move(core, node); - pin_core_to_node(core->id, node->id); - } -} - -/* - * Move structures of given level to specified NUMA node - */ -static void move_level_to_numa_node(struct toptree *node, struct toptree *phys, - enum toptree_level level, bool perfect) -{ - int cores_free, cores_target = emu_cores->per_node_target; - struct toptree *cur, *tmp; - - toptree_for_each_safe(cur, tmp, phys, level) { - cores_free = cores_target - toptree_count(node, CORE); - if (perfect) { - if (cores_free == toptree_count(cur, CORE)) - toptree_move(cur, node); - } else { - if (cores_free >= toptree_count(cur, CORE)) - toptree_move(cur, node); - } - } -} - -/* - * Move structures of a given level to NUMA nodes. If "perfect" is specified - * move only perfectly fitting structures. Otherwise move also smaller - * than needed structures. - */ -static void move_level_to_numa(struct toptree *numa, struct toptree *phys, - enum toptree_level level, bool perfect) -{ - struct toptree *node; - - toptree_for_each(node, numa, NODE) - move_level_to_numa_node(node, phys, level, perfect); -} - -/* - * For the first run try to move the big structures - */ -static void toptree_to_numa_first(struct toptree *numa, struct toptree *phys) -{ - struct toptree *core; - - /* Always try to move perfectly fitting structures first */ - move_level_to_numa(numa, phys, DRAWER, true); - move_level_to_numa(numa, phys, DRAWER, false); - move_level_to_numa(numa, phys, BOOK, true); - move_level_to_numa(numa, phys, BOOK, false); - move_level_to_numa(numa, phys, MC, true); - move_level_to_numa(numa, phys, MC, false); - /* Now pin all the moved cores */ - toptree_for_each(core, numa, CORE) - pin_core_to_node(core->id, core_node(core)->id); -} - -/* - * Allocate new topology and create required nodes - */ -static struct toptree *toptree_new(int id, int nodes) -{ - struct toptree *tree; - int nid; - - tree = toptree_alloc(TOPOLOGY, id); - if (!tree) - goto fail; - for (nid = 0; nid < nodes; nid++) { - if (!toptree_get_child(tree, nid)) - goto fail; - } - return tree; -fail: - panic("NUMA emulation could not allocate topology"); -} - -/* - * Allocate and initialize core to node mapping - */ -static void __ref create_core_to_node_map(void) -{ - int i; - - emu_cores = memblock_alloc(sizeof(*emu_cores), 8); - if (!emu_cores) - panic("%s: Failed to allocate %zu bytes align=0x%x\n", - __func__, sizeof(*emu_cores), 8); - for (i = 0; i < ARRAY_SIZE(emu_cores->to_node_id); i++) - emu_cores->to_node_id[i] = NODE_ID_FREE; -} - -/* - * Move cores from physical topology into NUMA target topology - * and try to keep as much of the physical topology as possible. - */ -static struct toptree *toptree_to_numa(struct toptree *phys) -{ - static int first = 1; - struct toptree *numa; - int cores_total; - - cores_total = emu_cores->total + cores_free(phys); - emu_cores->per_node_target = cores_total / emu_nodes; - numa = toptree_new(TOPTREE_ID_NUMA, emu_nodes); - if (first) { - toptree_to_numa_first(numa, phys); - first = 0; - } - toptree_to_numa_single(numa, phys, 0); - toptree_to_numa_single(numa, phys, 1); - toptree_unify_tree(numa); - - WARN_ON(cpumask_weight(&phys->mask)); - return numa; -} - -/* - * Create a toptree out of the physical topology that we got from the hypervisor - */ -static struct toptree *toptree_from_topology(void) -{ - struct toptree *phys, *node, *drawer, *book, *mc, *core; - struct cpu_topology_s390 *top; - int cpu; - - phys = toptree_new(TOPTREE_ID_PHYS, 1); - - for_each_cpu(cpu, &cpus_with_topology) { - top = &cpu_topology[cpu]; - node = toptree_get_child(phys, 0); - drawer = toptree_get_child(node, top->drawer_id); - book = toptree_get_child(drawer, top->book_id); - mc = toptree_get_child(book, top->socket_id); - core = toptree_get_child(mc, smp_get_base_cpu(cpu)); - if (!drawer || !book || !mc || !core) - panic("NUMA emulation could not allocate memory"); - cpumask_set_cpu(cpu, &core->mask); - toptree_update_mask(mc); - } - return phys; -} - -/* - * Add toptree core to topology and create correct CPU masks - */ -static void topology_add_core(struct toptree *core) -{ - struct cpu_topology_s390 *top; - int cpu; - - for_each_cpu(cpu, &core->mask) { - top = &cpu_topology[cpu]; - cpumask_copy(&top->thread_mask, &core->mask); - cpumask_copy(&top->core_mask, &core_mc(core)->mask); - cpumask_copy(&top->book_mask, &core_book(core)->mask); - cpumask_copy(&top->drawer_mask, &core_drawer(core)->mask); - cpumask_set_cpu(cpu, &node_to_cpumask_map[core_node(core)->id]); - top->node_id = core_node(core)->id; - } -} - -/* - * Apply toptree to topology and create CPU masks - */ -static void toptree_to_topology(struct toptree *numa) -{ - struct toptree *core; - int i; - - /* Clear all node masks */ - for (i = 0; i < MAX_NUMNODES; i++) - cpumask_clear(&node_to_cpumask_map[i]); - - /* Rebuild all masks */ - toptree_for_each(core, numa, CORE) - topology_add_core(core); -} - -/* - * Show the node to core mapping - */ -static void print_node_to_core_map(void) -{ - int nid, cid; - - if (!numa_debug_enabled) - return; - printk(KERN_DEBUG "NUMA node to core mapping\n"); - for (nid = 0; nid < emu_nodes; nid++) { - printk(KERN_DEBUG " node %3d: ", nid); - for (cid = 0; cid < ARRAY_SIZE(emu_cores->to_node_id); cid++) { - if (emu_cores->to_node_id[cid] == nid) - printk(KERN_CONT "%d ", cid); - } - printk(KERN_CONT "\n"); - } -} - -static void pin_all_possible_cpus(void) -{ - int core_id, node_id, cpu; - static int initialized; - - if (initialized) - return; - print_node_to_core_map(); - node_id = 0; - for_each_possible_cpu(cpu) { - core_id = smp_get_base_cpu(cpu); - if (emu_cores->to_node_id[core_id] != NODE_ID_FREE) - continue; - pin_core_to_node(core_id, node_id); - cpu_topology[cpu].node_id = node_id; - node_id = (node_id + 1) % emu_nodes; - } - print_node_to_core_map(); - initialized = 1; -} - -/* - * Transfer physical topology into a NUMA topology and modify CPU masks - * according to the NUMA topology. - * - * Must be called with "sched_domains_mutex" lock held. - */ -static void emu_update_cpu_topology(void) -{ - struct toptree *phys, *numa; - - if (emu_cores == NULL) - create_core_to_node_map(); - phys = toptree_from_topology(); - numa = toptree_to_numa(phys); - toptree_free(phys); - toptree_to_topology(numa); - toptree_free(numa); - pin_all_possible_cpus(); -} - -/* - * If emu_size is not set, use CONFIG_EMU_SIZE. Then round to minimum - * alignment (needed for memory hotplug). - */ -static unsigned long emu_setup_size_adjust(unsigned long size) -{ - unsigned long size_new; - - size = size ? : CONFIG_EMU_SIZE; - size_new = roundup(size, memory_block_size_bytes()); - if (size_new == size) - return size; - pr_warn("Increasing memory stripe size from %ld MB to %ld MB\n", - size >> 20, size_new >> 20); - return size_new; -} - -/* - * If we have not enough memory for the specified nodes, reduce the node count. - */ -static int emu_setup_nodes_adjust(int nodes) -{ - int nodes_max; - - nodes_max = memblock.memory.total_size / emu_size; - nodes_max = max(nodes_max, 1); - if (nodes_max >= nodes) - return nodes; - pr_warn("Not enough memory for %d nodes, reducing node count\n", nodes); - return nodes_max; -} - -/* - * Early emu setup - */ -static void emu_setup(void) -{ - int nid; - - emu_size = emu_setup_size_adjust(emu_size); - emu_nodes = emu_setup_nodes_adjust(emu_nodes); - for (nid = 0; nid < emu_nodes; nid++) - node_set(nid, node_possible_map); - pr_info("Creating %d nodes with memory stripe size %ld MB\n", - emu_nodes, emu_size >> 20); -} - -/* - * Return node id for given page number - */ -static int emu_pfn_to_nid(unsigned long pfn) -{ - return (pfn / (emu_size >> PAGE_SHIFT)) % emu_nodes; -} - -/* - * Return stripe size - */ -static unsigned long emu_align(void) -{ - return emu_size; -} - -/* - * Return distance between two nodes - */ -static int emu_distance(int node1, int node2) -{ - return (node1 != node2) * EMU_NODE_DIST; -} - -/* - * Define callbacks for generic s390 NUMA infrastructure - */ -const struct numa_mode numa_mode_emu = { - .name = "emu", - .setup = emu_setup, - .update_cpu_topology = emu_update_cpu_topology, - .__pfn_to_nid = emu_pfn_to_nid, - .align = emu_align, - .distance = emu_distance, -}; - -/* - * Kernel parameter: emu_nodes=<n> - */ -static int __init early_parse_emu_nodes(char *p) -{ - int count; - - if (!p || kstrtoint(p, 0, &count) != 0 || count <= 0) - return 0; - emu_nodes = min(count, MAX_NUMNODES); - return 0; -} -early_param("emu_nodes", early_parse_emu_nodes); - -/* - * Kernel parameter: emu_size=[<n>[k|M|G|T]] - */ -static int __init early_parse_emu_size(char *p) -{ - if (p) - emu_size = memparse(p, NULL); - return 0; -} -early_param("emu_size", early_parse_emu_size); diff --git a/arch/s390/numa/numa.c b/arch/s390/numa/numa.c index d2910fa834c8..51c5a9f6e525 100644 --- a/arch/s390/numa/numa.c +++ b/arch/s390/numa/numa.c @@ -7,165 +7,36 @@ * Copyright IBM Corp. 2015 */ -#define KMSG_COMPONENT "numa" -#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt - #include <linux/kernel.h> #include <linux/mmzone.h> #include <linux/cpumask.h> #include <linux/memblock.h> -#include <linux/slab.h> #include <linux/node.h> - #include <asm/numa.h> -#include "numa_mode.h" -pg_data_t *node_data[MAX_NUMNODES]; +struct pglist_data *node_data[MAX_NUMNODES]; EXPORT_SYMBOL(node_data); -cpumask_t node_to_cpumask_map[MAX_NUMNODES]; -EXPORT_SYMBOL(node_to_cpumask_map); - -static void plain_setup(void) -{ - node_set(0, node_possible_map); -} - -const struct numa_mode numa_mode_plain = { - .name = "plain", - .setup = plain_setup, -}; - -static const struct numa_mode *mode = &numa_mode_plain; - -int numa_pfn_to_nid(unsigned long pfn) -{ - return mode->__pfn_to_nid ? mode->__pfn_to_nid(pfn) : 0; -} - -void numa_update_cpu_topology(void) -{ - if (mode->update_cpu_topology) - mode->update_cpu_topology(); -} - -int __node_distance(int a, int b) -{ - return mode->distance ? mode->distance(a, b) : 0; -} -EXPORT_SYMBOL(__node_distance); - -int numa_debug_enabled; - -/* - * numa_setup_memory() - Assign bootmem to nodes - * - * The memory is first added to memblock without any respect to nodes. - * This is fixed before remaining memblock memory is handed over to the - * buddy allocator. - * An important side effect is that large bootmem allocations might easily - * cross node boundaries, which can be needed for large allocations with - * smaller memory stripes in each node (i.e. when using NUMA emulation). - * - * Memory defines nodes: - * Therefore this routine also sets the nodes online with memory. - */ -static void __init numa_setup_memory(void) +void __init numa_setup(void) { - unsigned long cur_base, align, end_of_dram; - int nid = 0; - - end_of_dram = memblock_end_of_DRAM(); - align = mode->align ? mode->align() : ULONG_MAX; - - /* - * Step through all available memory and assign it to the nodes - * indicated by the mode implementation. - * All nodes which are seen here will be set online. - */ - cur_base = 0; - do { - nid = numa_pfn_to_nid(PFN_DOWN(cur_base)); - node_set_online(nid); - memblock_set_node(cur_base, align, &memblock.memory, nid); - cur_base += align; - } while (cur_base < end_of_dram); + int nid; - /* Allocate and fill out node_data */ + nodes_clear(node_possible_map); + node_set(0, node_possible_map); + node_set_online(0); for (nid = 0; nid < MAX_NUMNODES; nid++) { NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8); if (!NODE_DATA(nid)) panic("%s: Failed to allocate %zu bytes align=0x%x\n", __func__, sizeof(pg_data_t), 8); } - - for_each_online_node(nid) { - unsigned long start_pfn, end_pfn; - unsigned long t_start, t_end; - int i; - - start_pfn = ULONG_MAX; - end_pfn = 0; - for_each_mem_pfn_range(i, nid, &t_start, &t_end, NULL) { - if (t_start < start_pfn) - start_pfn = t_start; - if (t_end > end_pfn) - end_pfn = t_end; - } - NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn; - NODE_DATA(nid)->node_id = nid; - } -} - -/* - * numa_setup() - Earliest initialization - * - * Assign the mode and call the mode's setup routine. - */ -void __init numa_setup(void) -{ - pr_info("NUMA mode: %s\n", mode->name); - nodes_clear(node_possible_map); - /* Initially attach all possible CPUs to node 0. */ - cpumask_copy(&node_to_cpumask_map[0], cpu_possible_mask); - if (mode->setup) - mode->setup(); - numa_setup_memory(); - memblock_dump_all(); + NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT; + NODE_DATA(0)->node_id = 0; } -/* - * numa_init_late() - Initialization initcall - * - * Register NUMA nodes. - */ static int __init numa_init_late(void) { - int nid; - - for_each_online_node(nid) - register_one_node(nid); + register_one_node(0); return 0; } arch_initcall(numa_init_late); - -static int __init parse_debug(char *parm) -{ - numa_debug_enabled = 1; - return 0; -} -early_param("numa_debug", parse_debug); - -static int __init parse_numa(char *parm) -{ - if (!parm) - return 1; - if (strcmp(parm, numa_mode_plain.name) == 0) - mode = &numa_mode_plain; -#ifdef CONFIG_NUMA_EMU - if (strcmp(parm, numa_mode_emu.name) == 0) - mode = &numa_mode_emu; -#endif - return 0; -} -early_param("numa", parse_numa); diff --git a/arch/s390/numa/numa_mode.h b/arch/s390/numa/numa_mode.h deleted file mode 100644 index dfd3e2784081..000000000000 --- a/arch/s390/numa/numa_mode.h +++ /dev/null @@ -1,25 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * NUMA support for s390 - * - * Define declarations used for communication between NUMA mode - * implementations and NUMA core functionality. - * - * Copyright IBM Corp. 2015 - */ -#ifndef __S390_NUMA_MODE_H -#define __S390_NUMA_MODE_H - -struct numa_mode { - char *name; /* Name of mode */ - void (*setup)(void); /* Initizalize mode */ - void (*update_cpu_topology)(void); /* Called by topology code */ - int (*__pfn_to_nid)(unsigned long pfn); /* PFN to node ID */ - unsigned long (*align)(void); /* Minimum node alignment */ - int (*distance)(int a, int b); /* Distance between two nodes */ -}; - -extern const struct numa_mode numa_mode_plain; -extern const struct numa_mode numa_mode_emu; - -#endif /* __S390_NUMA_MODE_H */ diff --git a/arch/s390/numa/toptree.c b/arch/s390/numa/toptree.c deleted file mode 100644 index 71a608cd4f61..000000000000 --- a/arch/s390/numa/toptree.c +++ /dev/null @@ -1,351 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * NUMA support for s390 - * - * A tree structure used for machine topology mangling - * - * Copyright IBM Corp. 2015 - */ - -#include <linux/kernel.h> -#include <linux/memblock.h> -#include <linux/cpumask.h> -#include <linux/list.h> -#include <linux/list_sort.h> -#include <linux/slab.h> -#include <asm/numa.h> - -#include "toptree.h" - -/** - * toptree_alloc - Allocate and initialize a new tree node. - * @level: The node's vertical level; level 0 contains the leaves. - * @id: ID number, explicitly not unique beyond scope of node's siblings - * - * Allocate a new tree node and initialize it. - * - * RETURNS: - * Pointer to the new tree node or NULL on error - */ -struct toptree __ref *toptree_alloc(int level, int id) -{ - struct toptree *res; - - if (slab_is_available()) - res = kzalloc(sizeof(*res), GFP_KERNEL); - else - res = memblock_alloc(sizeof(*res), 8); - if (!res) - return res; - - INIT_LIST_HEAD(&res->children); - INIT_LIST_HEAD(&res->sibling); - cpumask_clear(&res->mask); - res->level = level; - res->id = id; - return res; -} - -/** - * toptree_remove - Remove a tree node from a tree - * @cand: Pointer to the node to remove - * - * The node is detached from its parent node. The parent node's - * masks will be updated to reflect the loss of the child. - */ -static void toptree_remove(struct toptree *cand) -{ - struct toptree *oldparent; - - list_del_init(&cand->sibling); - oldparent = cand->parent; - cand->parent = NULL; - toptree_update_mask(oldparent); -} - -/** - * toptree_free - discard a tree node - * @cand: Pointer to the tree node to discard - * - * Checks if @cand is attached to a parent node. Detaches it - * cleanly using toptree_remove. Possible children are freed - * recursively. In the end @cand itself is freed. - */ -void __ref toptree_free(struct toptree *cand) -{ - struct toptree *child, *tmp; - - if (cand->parent) - toptree_remove(cand); - toptree_for_each_child_safe(child, tmp, cand) - toptree_free(child); - if (slab_is_available()) - kfree(cand); - else - memblock_free_early((unsigned long)cand, sizeof(*cand)); -} - -/** - * toptree_update_mask - Update node bitmasks - * @cand: Pointer to a tree node - * - * The node's cpumask will be updated by combining all children's - * masks. Then toptree_update_mask is called recursively for the - * parent if applicable. - * - * NOTE: - * This must not be called on leaves. If called on a leaf, its - * CPU mask is cleared and lost. - */ -void toptree_update_mask(struct toptree *cand) -{ - struct toptree *child; - - cpumask_clear(&cand->mask); - list_for_each_entry(child, &cand->children, sibling) - cpumask_or(&cand->mask, &cand->mask, &child->mask); - if (cand->parent) - toptree_update_mask(cand->parent); -} - -/** - * toptree_insert - Insert a tree node into tree - * @cand: Pointer to the node to insert - * @target: Pointer to the node to which @cand will added as a child - * - * Insert a tree node into a tree. Masks will be updated automatically. - * - * RETURNS: - * 0 on success, -1 if NULL is passed as argument or the node levels - * don't fit. - */ -static int toptree_insert(struct toptree *cand, struct toptree *target) -{ - if (!cand || !target) - return -1; - if (target->level != (cand->level + 1)) - return -1; - list_add_tail(&cand->sibling, &target->children); - cand->parent = target; - toptree_update_mask(target); - return 0; -} - -/** - * toptree_move_children - Move all child nodes of a node to a new place - * @cand: Pointer to the node whose children are to be moved - * @target: Pointer to the node to which @cand's children will be attached - * - * Take all child nodes of @cand and move them using toptree_move. - */ -static void toptree_move_children(struct toptree *cand, struct toptree *target) -{ - struct toptree *child, *tmp; - - toptree_for_each_child_safe(child, tmp, cand) - toptree_move(child, target); -} - -/** - * toptree_unify - Merge children with same ID - * @cand: Pointer to node whose direct children should be made unique - * - * When mangling the tree it is possible that a node has two or more children - * which have the same ID. This routine merges these children into one and - * moves all children of the merged nodes into the unified node. - */ -void toptree_unify(struct toptree *cand) -{ - struct toptree *child, *tmp, *cand_copy; - - /* Threads cannot be split, cores are not split */ - if (cand->level < 2) - return; - - cand_copy = toptree_alloc(cand->level, 0); - toptree_for_each_child_safe(child, tmp, cand) { - struct toptree *tmpchild; - - if (!cpumask_empty(&child->mask)) { - tmpchild = toptree_get_child(cand_copy, child->id); - toptree_move_children(child, tmpchild); - } - toptree_free(child); - } - toptree_move_children(cand_copy, cand); - toptree_free(cand_copy); - - toptree_for_each_child(child, cand) - toptree_unify(child); -} - -/** - * toptree_move - Move a node to another context - * @cand: Pointer to the node to move - * @target: Pointer to the node where @cand should go - * - * In the easiest case @cand is exactly on the level below @target - * and will be immediately moved to the target. - * - * If @target's level is not the direct parent level of @cand, - * nodes for the missing levels are created and put between - * @cand and @target. The "stacking" nodes' IDs are taken from - * @cand's parents. - * - * After this it is likely to have redundant nodes in the tree - * which are addressed by means of toptree_unify. - */ -void toptree_move(struct toptree *cand, struct toptree *target) -{ - struct toptree *stack_target, *real_insert_point, *ptr, *tmp; - - if (cand->level + 1 == target->level) { - toptree_remove(cand); - toptree_insert(cand, target); - return; - } - - real_insert_point = NULL; - ptr = cand; - stack_target = NULL; - - do { - tmp = stack_target; - stack_target = toptree_alloc(ptr->level + 1, - ptr->parent->id); - toptree_insert(tmp, stack_target); - if (!real_insert_point) - real_insert_point = stack_target; - ptr = ptr->parent; - } while (stack_target->level < (target->level - 1)); - - toptree_remove(cand); - toptree_insert(cand, real_insert_point); - toptree_insert(stack_target, target); -} - -/** - * toptree_get_child - Access a tree node's child by its ID - * @cand: Pointer to tree node whose child is to access - * @id: The desired child's ID - * - * @cand's children are searched for a child with matching ID. - * If no match can be found, a new child with the desired ID - * is created and returned. - */ -struct toptree *toptree_get_child(struct toptree *cand, int id) -{ - struct toptree *child; - - toptree_for_each_child(child, cand) - if (child->id == id) - return child; - child = toptree_alloc(cand->level-1, id); - toptree_insert(child, cand); - return child; -} - -/** - * toptree_first - Find the first descendant on specified level - * @context: Pointer to tree node whose descendants are to be used - * @level: The level of interest - * - * RETURNS: - * @context's first descendant on the specified level, or NULL - * if there is no matching descendant - */ -struct toptree *toptree_first(struct toptree *context, int level) -{ - struct toptree *child, *tmp; - - if (context->level == level) - return context; - - if (!list_empty(&context->children)) { - list_for_each_entry(child, &context->children, sibling) { - tmp = toptree_first(child, level); - if (tmp) - return tmp; - } - } - return NULL; -} - -/** - * toptree_next_sibling - Return next sibling - * @cur: Pointer to a tree node - * - * RETURNS: - * If @cur has a parent and is not the last in the parent's children list, - * the next sibling is returned. Or NULL when there are no siblings left. - */ -static struct toptree *toptree_next_sibling(struct toptree *cur) -{ - if (cur->parent == NULL) - return NULL; - - if (cur == list_last_entry(&cur->parent->children, - struct toptree, sibling)) - return NULL; - return (struct toptree *) list_next_entry(cur, sibling); -} - -/** - * toptree_next - Tree traversal function - * @cur: Pointer to current element - * @context: Pointer to the root node of the tree or subtree to - * be traversed. - * @level: The level of interest. - * - * RETURNS: - * Pointer to the next node on level @level - * or NULL when there is no next node. - */ -struct toptree *toptree_next(struct toptree *cur, struct toptree *context, - int level) -{ - struct toptree *cur_context, *tmp; - - if (!cur) - return NULL; - - if (context->level == level) - return NULL; - - tmp = toptree_next_sibling(cur); - if (tmp != NULL) - return tmp; - - cur_context = cur; - while (cur_context->level < context->level - 1) { - /* Step up */ - cur_context = cur_context->parent; - /* Step aside */ - tmp = toptree_next_sibling(cur_context); - if (tmp != NULL) { - /* Step down */ - tmp = toptree_first(tmp, level); - if (tmp != NULL) - return tmp; - } - } - return NULL; -} - -/** - * toptree_count - Count descendants on specified level - * @context: Pointer to node whose descendants are to be considered - * @level: Only descendants on the specified level will be counted - * - * RETURNS: - * Number of descendants on the specified level - */ -int toptree_count(struct toptree *context, int level) -{ - struct toptree *cur; - int cnt = 0; - - toptree_for_each(cur, context, level) - cnt++; - return cnt; -} diff --git a/arch/s390/numa/toptree.h b/arch/s390/numa/toptree.h deleted file mode 100644 index 5246371ec713..000000000000 --- a/arch/s390/numa/toptree.h +++ /dev/null @@ -1,61 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * NUMA support for s390 - * - * A tree structure used for machine topology mangling - * - * Copyright IBM Corp. 2015 - */ -#ifndef S390_TOPTREE_H -#define S390_TOPTREE_H - -#include <linux/cpumask.h> -#include <linux/list.h> - -struct toptree { - int level; - int id; - cpumask_t mask; - struct toptree *parent; - struct list_head sibling; - struct list_head children; -}; - -struct toptree *toptree_alloc(int level, int id); -void toptree_free(struct toptree *cand); -void toptree_update_mask(struct toptree *cand); -void toptree_unify(struct toptree *cand); -struct toptree *toptree_get_child(struct toptree *cand, int id); -void toptree_move(struct toptree *cand, struct toptree *target); -int toptree_count(struct toptree *context, int level); - -struct toptree *toptree_first(struct toptree *context, int level); -struct toptree *toptree_next(struct toptree *cur, struct toptree *context, - int level); - -#define toptree_for_each_child(child, ptree) \ - list_for_each_entry(child, &ptree->children, sibling) - -#define toptree_for_each_child_safe(child, ptmp, ptree) \ - list_for_each_entry_safe(child, ptmp, &ptree->children, sibling) - -#define toptree_is_last(ptree) \ - ((ptree->parent == NULL) || \ - (ptree->parent->children.prev == &ptree->sibling)) - -#define toptree_for_each(ptree, cont, ttype) \ - for (ptree = toptree_first(cont, ttype); \ - ptree != NULL; \ - ptree = toptree_next(ptree, cont, ttype)) - -#define toptree_for_each_safe(ptree, tmp, cont, ttype) \ - for (ptree = toptree_first(cont, ttype), \ - tmp = toptree_next(ptree, cont, ttype); \ - ptree != NULL; \ - ptree = tmp, \ - tmp = toptree_next(ptree, cont, ttype)) - -#define toptree_for_each_sibling(ptree, start) \ - toptree_for_each(ptree, start->parent, start->level) - -#endif /* S390_TOPTREE_H */ diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 60716d18ce5a..94ca121933de 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -40,8 +40,9 @@ static LIST_HEAD(zpci_list); static DEFINE_SPINLOCK(zpci_list_lock); -static DECLARE_BITMAP(zpci_domain, ZPCI_NR_DEVICES); +static DECLARE_BITMAP(zpci_domain, ZPCI_DOMAIN_BITMAP_SIZE); static DEFINE_SPINLOCK(zpci_domain_lock); +static unsigned int zpci_num_domains_allocated; #define ZPCI_IOMAP_ENTRIES \ min(((unsigned long) ZPCI_NR_DEVICES * PCI_STD_NUM_BARS / 2), \ @@ -607,57 +608,25 @@ void pcibios_disable_device(struct pci_dev *pdev) zpci_debug_exit_device(zdev); } -#ifdef CONFIG_HIBERNATE_CALLBACKS -static int zpci_restore(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct zpci_dev *zdev = to_zpci(pdev); - int ret = 0; - - if (zdev->state != ZPCI_FN_STATE_ONLINE) - goto out; - - ret = clp_enable_fh(zdev, ZPCI_NR_DMA_SPACES); - if (ret) - goto out; - - zpci_map_resources(pdev); - zpci_register_ioat(zdev, 0, zdev->start_dma, zdev->end_dma, - (u64) zdev->dma_table); - -out: - return ret; -} - -static int zpci_freeze(struct device *dev) -{ - struct pci_dev *pdev = to_pci_dev(dev); - struct zpci_dev *zdev = to_zpci(pdev); - - if (zdev->state != ZPCI_FN_STATE_ONLINE) - return 0; - - zpci_unregister_ioat(zdev, 0); - zpci_unmap_resources(pdev); - return clp_disable_fh(zdev); -} - -struct dev_pm_ops pcibios_pm_ops = { - .thaw_noirq = zpci_restore, - .freeze_noirq = zpci_freeze, - .restore_noirq = zpci_restore, - .poweroff_noirq = zpci_freeze, -}; -#endif /* CONFIG_HIBERNATE_CALLBACKS */ - static int zpci_alloc_domain(struct zpci_dev *zdev) { + spin_lock(&zpci_domain_lock); + if (zpci_num_domains_allocated > (ZPCI_NR_DEVICES - 1)) { + spin_unlock(&zpci_domain_lock); + pr_err("Adding PCI function %08x failed because the configured limit of %d is reached\n", + zdev->fid, ZPCI_NR_DEVICES); + return -ENOSPC; + } + if (zpci_unique_uid) { zdev->domain = (u16) zdev->uid; - if (zdev->domain >= ZPCI_NR_DEVICES) - return 0; + if (zdev->domain == 0) { + pr_warn("UID checking is active but no UID is set for PCI function %08x, so automatic domain allocation is used instead\n", + zdev->fid); + update_uid_checking(false); + goto auto_allocate; + } - spin_lock(&zpci_domain_lock); if (test_bit(zdev->domain, zpci_domain)) { spin_unlock(&zpci_domain_lock); pr_err("Adding PCI function %08x failed because domain %04x is already assigned\n", @@ -665,30 +634,28 @@ static int zpci_alloc_domain(struct zpci_dev *zdev) return -EEXIST; } set_bit(zdev->domain, zpci_domain); + zpci_num_domains_allocated++; spin_unlock(&zpci_domain_lock); return 0; } - - spin_lock(&zpci_domain_lock); +auto_allocate: + /* + * We can always auto allocate domains below ZPCI_NR_DEVICES. + * There is either a free domain or we have reached the maximum in + * which case we would have bailed earlier. + */ zdev->domain = find_first_zero_bit(zpci_domain, ZPCI_NR_DEVICES); - if (zdev->domain == ZPCI_NR_DEVICES) { - spin_unlock(&zpci_domain_lock); - pr_err("Adding PCI function %08x failed because the configured limit of %d is reached\n", - zdev->fid, ZPCI_NR_DEVICES); - return -ENOSPC; - } set_bit(zdev->domain, zpci_domain); + zpci_num_domains_allocated++; spin_unlock(&zpci_domain_lock); return 0; } static void zpci_free_domain(struct zpci_dev *zdev) { - if (zdev->domain >= ZPCI_NR_DEVICES) - return; - spin_lock(&zpci_domain_lock); clear_bit(zdev->domain, zpci_domain); + zpci_num_domains_allocated--; spin_unlock(&zpci_domain_lock); } diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 0d3d8f170ea4..ea794ae755ae 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -24,7 +24,7 @@ bool zpci_unique_uid; -static void update_uid_checking(bool new) +void update_uid_checking(bool new) { if (zpci_unique_uid != new) zpci_dbg(1, "uid checking:%d\n", new); diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c index 30ee72268790..39295d88f670 100644 --- a/drivers/pci/hotplug/s390_pci_hpc.c +++ b/drivers/pci/hotplug/s390_pci_hpc.c @@ -19,7 +19,6 @@ #include <asm/sclp.h> #define SLOT_NAME_SIZE 10 -static LIST_HEAD(s390_hotplug_slot_list); static int zpci_fn_configured(enum zpci_state state) { @@ -27,97 +26,86 @@ static int zpci_fn_configured(enum zpci_state state) state == ZPCI_FN_STATE_ONLINE; } -/* - * struct slot - slot information for each *physical* slot - */ -struct slot { - struct list_head slot_list; - struct hotplug_slot hotplug_slot; - struct zpci_dev *zdev; -}; - -static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot) +static inline int zdev_configure(struct zpci_dev *zdev) { - return container_of(hotplug_slot, struct slot, hotplug_slot); -} - -static inline int slot_configure(struct slot *slot) -{ - int ret = sclp_pci_configure(slot->zdev->fid); + int ret = sclp_pci_configure(zdev->fid); - zpci_dbg(3, "conf fid:%x, rc:%d\n", slot->zdev->fid, ret); + zpci_dbg(3, "conf fid:%x, rc:%d\n", zdev->fid, ret); if (!ret) - slot->zdev->state = ZPCI_FN_STATE_CONFIGURED; + zdev->state = ZPCI_FN_STATE_CONFIGURED; return ret; } -static inline int slot_deconfigure(struct slot *slot) +static inline int zdev_deconfigure(struct zpci_dev *zdev) { - int ret = sclp_pci_deconfigure(slot->zdev->fid); + int ret = sclp_pci_deconfigure(zdev->fid); - zpci_dbg(3, "deconf fid:%x, rc:%d\n", slot->zdev->fid, ret); + zpci_dbg(3, "deconf fid:%x, rc:%d\n", zdev->fid, ret); if (!ret) - slot->zdev->state = ZPCI_FN_STATE_STANDBY; + zdev->state = ZPCI_FN_STATE_STANDBY; return ret; } static int enable_slot(struct hotplug_slot *hotplug_slot) { - struct slot *slot = to_slot(hotplug_slot); + struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev, + hotplug_slot); int rc; - if (slot->zdev->state != ZPCI_FN_STATE_STANDBY) + if (zdev->state != ZPCI_FN_STATE_STANDBY) return -EIO; - rc = slot_configure(slot); + rc = zdev_configure(zdev); if (rc) return rc; - rc = zpci_enable_device(slot->zdev); + rc = zpci_enable_device(zdev); if (rc) goto out_deconfigure; - pci_scan_slot(slot->zdev->bus, ZPCI_DEVFN); + pci_scan_slot(zdev->bus, ZPCI_DEVFN); pci_lock_rescan_remove(); - pci_bus_add_devices(slot->zdev->bus); + pci_bus_add_devices(zdev->bus); pci_unlock_rescan_remove(); return rc; out_deconfigure: - slot_deconfigure(slot); + zdev_deconfigure(zdev); return rc; } static int disable_slot(struct hotplug_slot *hotplug_slot) { - struct slot *slot = to_slot(hotplug_slot); + struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev, + hotplug_slot); struct pci_dev *pdev; int rc; - if (!zpci_fn_configured(slot->zdev->state)) + if (!zpci_fn_configured(zdev->state)) return -EIO; - pdev = pci_get_slot(slot->zdev->bus, ZPCI_DEVFN); + pdev = pci_get_slot(zdev->bus, ZPCI_DEVFN); if (pdev) { pci_stop_and_remove_bus_device_locked(pdev); pci_dev_put(pdev); } - rc = zpci_disable_device(slot->zdev); + rc = zpci_disable_device(zdev); if (rc) return rc; - return slot_deconfigure(slot); + return zdev_deconfigure(zdev); } static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) { - struct slot *slot = to_slot(hotplug_slot); + struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev, + hotplug_slot); - switch (slot->zdev->state) { + switch (zdev->state) { case ZPCI_FN_STATE_STANDBY: *value = 0; break; @@ -145,44 +133,15 @@ static const struct hotplug_slot_ops s390_hotplug_slot_ops = { int zpci_init_slot(struct zpci_dev *zdev) { char name[SLOT_NAME_SIZE]; - struct slot *slot; - int rc; - if (!zdev) - return 0; - - slot = kzalloc(sizeof(*slot), GFP_KERNEL); - if (!slot) - goto error; - - slot->zdev = zdev; - slot->hotplug_slot.ops = &s390_hotplug_slot_ops; + zdev->hotplug_slot.ops = &s390_hotplug_slot_ops; snprintf(name, SLOT_NAME_SIZE, "%08x", zdev->fid); - rc = pci_hp_register(&slot->hotplug_slot, zdev->bus, - ZPCI_DEVFN, name); - if (rc) - goto error_reg; - - list_add(&slot->slot_list, &s390_hotplug_slot_list); - return 0; - -error_reg: - kfree(slot); -error: - return -ENOMEM; + return pci_hp_register(&zdev->hotplug_slot, zdev->bus, + ZPCI_DEVFN, name); } void zpci_exit_slot(struct zpci_dev *zdev) { - struct slot *slot, *next; - - list_for_each_entry_safe(slot, next, &s390_hotplug_slot_list, - slot_list) { - if (slot->zdev != zdev) - continue; - list_del(&slot->slot_list); - pci_hp_deregister(&slot->hotplug_slot); - kfree(slot); - } + pci_hp_deregister(&zdev->hotplug_slot); } diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 8d4971645cf1..facb588d09e4 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -58,7 +58,7 @@ struct dasd_diag_private { struct dasd_diag_req { unsigned int block_count; - struct dasd_diag_bio bio[0]; + struct dasd_diag_bio bio[]; }; static const u8 DASD_DIAG_CMS1[] = { 0xc3, 0xd4, 0xe2, 0xf1 };/* EBCDIC CMS1 */ diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h index 6943508d0f1d..ca24a78a256e 100644 --- a/drivers/s390/block/dasd_eckd.h +++ b/drivers/s390/block/dasd_eckd.h @@ -220,7 +220,7 @@ struct LRE_eckd_data { __u8 imbedded_count; __u8 extended_operation; __u16 extended_parameter_length; - __u8 extended_parameter[0]; + __u8 extended_parameter[]; } __attribute__ ((packed)); /* Prefix data for format 0x00 and 0x01 */ diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c index e7cf0a1d4f71..92757f9bd010 100644 --- a/drivers/s390/char/con3215.c +++ b/drivers/s390/char/con3215.c @@ -398,7 +398,7 @@ static void raw3215_irq(struct ccw_device *cdev, unsigned long intparm, } if (dstat == 0x08) break; - /* else, fall through */ + fallthrough; case 0x04: /* Device end interrupt. */ if ((raw = req->info) == NULL) diff --git a/drivers/s390/char/hmcdrv_ftp.c b/drivers/s390/char/hmcdrv_ftp.c index 0e70397d6e04..37ee8f698c3b 100644 --- a/drivers/s390/char/hmcdrv_ftp.c +++ b/drivers/s390/char/hmcdrv_ftp.c @@ -137,7 +137,7 @@ static int hmcdrv_ftp_parse(char *cmd, struct hmcdrv_ftp_cmdspec *ftp) while ((*cmd != '\0') && !iscntrl(*cmd)) ++cmd; ftp->fname = start; - /* fall through */ + fallthrough; default: *cmd = '\0'; break; diff --git a/drivers/s390/char/raw3270.h b/drivers/s390/char/raw3270.h index 3afaa35f7351..08f36e973b43 100644 --- a/drivers/s390/char/raw3270.h +++ b/drivers/s390/char/raw3270.h @@ -211,7 +211,7 @@ struct string struct list_head update; unsigned long size; unsigned long len; - char string[0]; + char string[]; } __attribute__ ((aligned(8))); static inline struct string * diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index 37d42de06079..a864b21af602 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -406,7 +406,7 @@ static void __init add_memory_merged(u16 rn) if (!size) goto skip_add; for (addr = start; addr < start + size; addr += block_size) - add_memory(numa_pfn_to_nid(PFN_DOWN(addr)), addr, block_size); + add_memory(0, addr, block_size); skip_add: first_rn = rn; num = 1; diff --git a/drivers/s390/char/sclp_pci.c b/drivers/s390/char/sclp_pci.c index 995e9196852e..a3e5a5fb0c1e 100644 --- a/drivers/s390/char/sclp_pci.c +++ b/drivers/s390/char/sclp_pci.c @@ -39,7 +39,7 @@ struct err_notify_evbuf { u8 atype; u32 fh; u32 fid; - u8 data[0]; + u8 data[]; } __packed; struct err_notify_sccb { diff --git a/drivers/s390/char/sclp_sdias.c b/drivers/s390/char/sclp_sdias.c index 13f97fd73aca..644b61013679 100644 --- a/drivers/s390/char/sclp_sdias.c +++ b/drivers/s390/char/sclp_sdias.c @@ -214,7 +214,7 @@ int sclp_sdias_copy(void *dest, int start_blk, int nr_blks) break; case SDIAS_EVSTATE_NO_DATA: TRACE("no data\n"); - /* fall through */ + fallthrough; default: pr_err("Error from SCLP while copying hsa. Event status = %x\n", sdias_evbuf.event_status); diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c index 3e0b2f63a9d2..380e6a67719c 100644 --- a/drivers/s390/char/tape_core.c +++ b/drivers/s390/char/tape_core.c @@ -677,7 +677,7 @@ tape_generic_remove(struct ccw_device *cdev) switch (device->tape_state) { case TS_INIT: tape_state_set(device, TS_NOT_OPER); - /* fallthrough */ + fallthrough; case TS_NOT_OPER: /* * Nothing to do. @@ -950,7 +950,7 @@ __tape_start_request(struct tape_device *device, struct tape_request *request) break; if (device->tape_state == TS_UNUSED) break; - /* fallthrough */ + fallthrough; default: if (device->tape_state == TS_BLKUSE) break; @@ -1118,7 +1118,7 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb) case -ETIMEDOUT: DBF_LH(1, "(%08x): Request timed out\n", device->cdev_id); - /* fallthrough */ + fallthrough; case -EIO: __tape_end_request(device, request, -EIO); break; diff --git a/drivers/s390/cio/airq.c b/drivers/s390/cio/airq.c index 427b2e24a8ce..cb466ed7eb5e 100644 --- a/drivers/s390/cio/airq.c +++ b/drivers/s390/cio/airq.c @@ -105,16 +105,12 @@ static irqreturn_t do_airq_interrupt(int irq, void *dummy) return IRQ_HANDLED; } -static struct irqaction airq_interrupt = { - .name = "AIO", - .handler = do_airq_interrupt, -}; - void __init init_airq_interrupts(void) { irq_set_chip_and_handler(THIN_INTERRUPT, &dummy_irq_chip, handle_percpu_irq); - setup_irq(THIN_INTERRUPT, &airq_interrupt); + if (request_irq(THIN_INTERRUPT, do_airq_interrupt, 0, "AIO", NULL)) + panic("Failed to register AIO interrupt\n"); } static inline unsigned long iv_size(unsigned long bits) diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index b42a93736668..483a9ecfcbb1 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -485,79 +485,10 @@ static void ccwgroup_shutdown(struct device *dev) gdrv->shutdown(gdev); } -static int ccwgroup_pm_prepare(struct device *dev) -{ - struct ccwgroup_device *gdev = to_ccwgroupdev(dev); - struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver); - - /* Fail while device is being set online/offline. */ - if (atomic_read(&gdev->onoff)) - return -EAGAIN; - - if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE) - return 0; - - return gdrv->prepare ? gdrv->prepare(gdev) : 0; -} - -static void ccwgroup_pm_complete(struct device *dev) -{ - struct ccwgroup_device *gdev = to_ccwgroupdev(dev); - struct ccwgroup_driver *gdrv = to_ccwgroupdrv(dev->driver); - - if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE) - return; - - if (gdrv->complete) - gdrv->complete(gdev); -} - -static int ccwgroup_pm_freeze(struct device *dev) -{ - struct ccwgroup_device *gdev = to_ccwgroupdev(dev); - struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver); - - if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE) - return 0; - - return gdrv->freeze ? gdrv->freeze(gdev) : 0; -} - -static int ccwgroup_pm_thaw(struct device *dev) -{ - struct ccwgroup_device *gdev = to_ccwgroupdev(dev); - struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver); - - if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE) - return 0; - - return gdrv->thaw ? gdrv->thaw(gdev) : 0; -} - -static int ccwgroup_pm_restore(struct device *dev) -{ - struct ccwgroup_device *gdev = to_ccwgroupdev(dev); - struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver); - - if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE) - return 0; - - return gdrv->restore ? gdrv->restore(gdev) : 0; -} - -static const struct dev_pm_ops ccwgroup_pm_ops = { - .prepare = ccwgroup_pm_prepare, - .complete = ccwgroup_pm_complete, - .freeze = ccwgroup_pm_freeze, - .thaw = ccwgroup_pm_thaw, - .restore = ccwgroup_pm_restore, -}; - static struct bus_type ccwgroup_bus_type = { .name = "ccwgroup", .remove = ccwgroup_remove, .shutdown = ccwgroup_shutdown, - .pm = &ccwgroup_pm_ops, }; bool dev_is_ccwgroup(struct device *dev) diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 6392a1b95b02..1ca73c2e5a8f 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -180,11 +180,12 @@ EXPORT_SYMBOL_GPL(chsc_ssqd); * @scssc: request and response block for SADC * @summary_indicator_addr: summary indicator address * @subchannel_indicator_addr: subchannel indicator address + * @isc: Interruption Subclass for this subchannel * * Returns 0 on success. */ int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, - u64 summary_indicator_addr, u64 subchannel_indicator_addr) + u64 summary_indicator_addr, u64 subchannel_indicator_addr, u8 isc) { memset(scssc, 0, sizeof(*scssc)); scssc->request.length = 0x0fe0; @@ -196,7 +197,7 @@ int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, scssc->ks = PAGE_DEFAULT_KEY >> 4; scssc->kc = PAGE_DEFAULT_KEY >> 4; - scssc->isc = QDIO_AIRQ_ISC; + scssc->isc = isc; scssc->schid = schid; /* enable the time delay disablement facility */ diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index e57d68e325a3..34de6d77442c 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -163,7 +163,8 @@ void chsc_chp_offline(struct chp_id chpid); int chsc_get_channel_measurement_chars(struct channel_path *chp); int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd); int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, - u64 summary_indicator_addr, u64 subchannel_indicator_addr); + u64 summary_indicator_addr, u64 subchannel_indicator_addr, + u8 isc); int chsc_sgib(u32 origin); int chsc_error_from_response(int response); diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index 18f5458f90e8..6d716db2a46a 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -563,16 +563,12 @@ static irqreturn_t do_cio_interrupt(int irq, void *dummy) return IRQ_HANDLED; } -static struct irqaction io_interrupt = { - .name = "I/O", - .handler = do_cio_interrupt, -}; - void __init init_cio_interrupts(void) { irq_set_chip_and_handler(IO_INTERRUPT, &dummy_irq_chip, handle_percpu_irq); - setup_irq(IO_INTERRUPT, &io_interrupt); + if (request_irq(IO_INTERRUPT, do_cio_interrupt, 0, "I/O", NULL)) + panic("Failed to register I/O interrupt\n"); } #ifdef CONFIG_CCW_CONSOLE diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 0c6245fc7706..50007cb9be5b 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1262,7 +1262,7 @@ static int recovery_check(struct device *dev, void *data) sch = to_subchannel(cdev->dev.parent); if ((sch->schib.pmcw.pam & sch->opm) == sch->vpm) break; - /* fall through */ + fallthrough; case DEV_STATE_DISCONNECTED: CIO_MSG_EVENT(3, "recovery: trigger 0.%x.%04x\n", cdev->private->dev_id.ssid, @@ -2091,7 +2091,7 @@ static void ccw_device_todo(struct work_struct *work) case CDEV_TODO_UNREG_EVAL: if (!sch_is_pseudo_sch(sch)) css_schedule_eval(sch->schid); - /* fall-through */ + fallthrough; case CDEV_TODO_UNREG: if (sch_is_pseudo_sch(sch)) ccw_device_unregister(cdev); diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c index 835de44dbbcc..77d0ea7b381b 100644 --- a/drivers/s390/cio/idset.c +++ b/drivers/s390/cio/idset.c @@ -13,7 +13,7 @@ struct idset { int num_ssid; int num_id; - unsigned long bitmap[0]; + unsigned long bitmap[]; }; static inline unsigned long bitmap_size(int num_ssid, int num_id) diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h index f72f961cc78f..b0beafc43d37 100644 --- a/drivers/s390/cio/qdio.h +++ b/drivers/s390/cio/qdio.h @@ -250,7 +250,6 @@ struct qdio_q { /* upper-layer program handler */ qdio_handler_t (*handler); - struct dentry *debugfs_q; struct qdio_irq *irq_ptr; struct sl *sl; /* @@ -266,7 +265,6 @@ struct qdio_irq { struct ccw_device *cdev; struct list_head entry; /* list of thinint devices */ struct dentry *debugfs_dev; - struct dentry *debugfs_perf; unsigned long int_parm; struct subchannel_id schid; @@ -391,12 +389,9 @@ void qdio_setup_ssqd_info(struct qdio_irq *irq_ptr); int qdio_setup_get_ssqd(struct qdio_irq *irq_ptr, struct subchannel_id *schid, struct qdio_ssqd_desc *data); -int qdio_setup_irq(struct qdio_initialize *init_data); -void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, - struct ccw_device *cdev); +int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data); +void qdio_print_subchannel_info(struct qdio_irq *irq_ptr); void qdio_release_memory(struct qdio_irq *irq_ptr); -int qdio_setup_create_sysfs(struct ccw_device *cdev); -void qdio_setup_destroy_sysfs(struct ccw_device *cdev); int qdio_setup_init(void); void qdio_setup_exit(void); int qdio_enable_async_operation(struct qdio_output_q *q); diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c index 00244607c8c0..5a3d9ee90a7f 100644 --- a/drivers/s390/cio/qdio_debug.c +++ b/drivers/s390/cio/qdio_debug.c @@ -81,7 +81,7 @@ int qdio_allocate_dbf(struct qdio_initialize *init_data, /* allocate trace view for the interface */ snprintf(text, QDIO_DBF_NAME_LEN, "qdio_%s", - dev_name(&init_data->cdev->dev)); + dev_name(&irq_ptr->cdev->dev)); irq_ptr->debug_area = qdio_get_dbf_entry(text); if (irq_ptr->debug_area) DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf reused"); @@ -190,6 +190,23 @@ static int qstat_show(struct seq_file *m, void *v) DEFINE_SHOW_ATTRIBUTE(qstat); +static int ssqd_show(struct seq_file *m, void *v) +{ + struct ccw_device *cdev = m->private; + struct qdio_ssqd_desc ssqd; + int rc; + + rc = qdio_get_ssqd_desc(cdev, &ssqd); + if (rc) + return rc; + + seq_hex_dump(m, "", DUMP_PREFIX_NONE, 16, 4, &ssqd, sizeof(ssqd), + false); + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(ssqd); + static char *qperf_names[] = { "Assumed adapter interrupts", "QDIO interrupts", @@ -284,53 +301,37 @@ static const struct file_operations debugfs_perf_fops = { .release = single_release, }; -static void setup_debugfs_entry(struct qdio_q *q) +static void setup_debugfs_entry(struct dentry *parent, struct qdio_q *q) { char name[QDIO_DEBUGFS_NAME_LEN]; snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d", q->is_input_q ? "input" : "output", q->nr); - q->debugfs_q = debugfs_create_file(name, 0444, - q->irq_ptr->debugfs_dev, q, &qstat_fops); - if (IS_ERR(q->debugfs_q)) - q->debugfs_q = NULL; + debugfs_create_file(name, 0444, parent, q, &qstat_fops); } -void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev) +void qdio_setup_debug_entries(struct qdio_irq *irq_ptr) { struct qdio_q *q; int i; - irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&cdev->dev), + irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&irq_ptr->cdev->dev), debugfs_root); - if (IS_ERR(irq_ptr->debugfs_dev)) - irq_ptr->debugfs_dev = NULL; - - irq_ptr->debugfs_perf = debugfs_create_file("statistics", - S_IFREG | S_IRUGO | S_IWUSR, - irq_ptr->debugfs_dev, irq_ptr, - &debugfs_perf_fops); - if (IS_ERR(irq_ptr->debugfs_perf)) - irq_ptr->debugfs_perf = NULL; + debugfs_create_file("statistics", S_IFREG | S_IRUGO | S_IWUSR, + irq_ptr->debugfs_dev, irq_ptr, &debugfs_perf_fops); + debugfs_create_file("ssqd", 0444, irq_ptr->debugfs_dev, irq_ptr->cdev, + &ssqd_fops); for_each_input_queue(irq_ptr, q, i) - setup_debugfs_entry(q); + setup_debugfs_entry(irq_ptr->debugfs_dev, q); for_each_output_queue(irq_ptr, q, i) - setup_debugfs_entry(q); + setup_debugfs_entry(irq_ptr->debugfs_dev, q); } void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr) { - struct qdio_q *q; - int i; - - for_each_input_queue(irq_ptr, q, i) - debugfs_remove(q->debugfs_q); - for_each_output_queue(irq_ptr, q, i) - debugfs_remove(q->debugfs_q); - debugfs_remove(irq_ptr->debugfs_perf); - debugfs_remove(irq_ptr->debugfs_dev); + debugfs_remove_recursive(irq_ptr->debugfs_dev); } int __init qdio_debug_init(void) @@ -352,7 +353,7 @@ int __init qdio_debug_init(void) void qdio_debug_exit(void) { qdio_clear_dbf_list(); - debugfs_remove(debugfs_root); + debugfs_remove_recursive(debugfs_root); debug_unregister(qdio_dbf_setup); debug_unregister(qdio_dbf_error); } diff --git a/drivers/s390/cio/qdio_debug.h b/drivers/s390/cio/qdio_debug.h index f85f5fa7cefc..122450ba6b90 100644 --- a/drivers/s390/cio/qdio_debug.h +++ b/drivers/s390/cio/qdio_debug.h @@ -66,8 +66,7 @@ static inline void DBF_DEV_HEX(struct qdio_irq *dev, void *addr, int qdio_allocate_dbf(struct qdio_initialize *init_data, struct qdio_irq *irq_ptr); -void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, - struct ccw_device *cdev); +void qdio_setup_debug_entries(struct qdio_irq *irq_ptr); void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr); int qdio_debug_init(void); void qdio_debug_exit(void); diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 02ced5949287..c890848064fe 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -1100,9 +1100,8 @@ int qdio_get_ssqd_desc(struct ccw_device *cdev, } EXPORT_SYMBOL_GPL(qdio_get_ssqd_desc); -static void qdio_shutdown_queues(struct ccw_device *cdev) +static void qdio_shutdown_queues(struct qdio_irq *irq_ptr) { - struct qdio_irq *irq_ptr = cdev->private->qdio_data; struct qdio_q *q; int i; @@ -1150,7 +1149,7 @@ int qdio_shutdown(struct ccw_device *cdev, int how) qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED); tiqdio_remove_device(irq_ptr); - qdio_shutdown_queues(cdev); + qdio_shutdown_queues(irq_ptr); qdio_shutdown_debug_entries(irq_ptr); /* cleanup subchannel */ @@ -1225,10 +1224,11 @@ EXPORT_SYMBOL_GPL(qdio_free); */ int qdio_allocate(struct qdio_initialize *init_data) { + struct ccw_device *cdev = init_data->cdev; struct subchannel_id schid; struct qdio_irq *irq_ptr; - ccw_device_get_schid(init_data->cdev, &schid); + ccw_device_get_schid(cdev, &schid); DBF_EVENT("qallocate:%4x", schid.sch_no); if ((init_data->no_input_qs && !init_data->input_handler) || @@ -1248,6 +1248,7 @@ int qdio_allocate(struct qdio_initialize *init_data) if (!irq_ptr) goto out_err; + irq_ptr->cdev = cdev; mutex_init(&irq_ptr->setup_mutex); if (qdio_allocate_dbf(init_data, irq_ptr)) goto out_rel; @@ -1272,7 +1273,7 @@ int qdio_allocate(struct qdio_initialize *init_data) goto out_rel; INIT_LIST_HEAD(&irq_ptr->entry); - init_data->cdev->private->qdio_data = irq_ptr; + cdev->private->qdio_data = irq_ptr; qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE); return 0; out_rel: @@ -1311,19 +1312,18 @@ static void qdio_detect_hsicq(struct qdio_irq *irq_ptr) int qdio_establish(struct qdio_initialize *init_data) { struct ccw_device *cdev = init_data->cdev; + struct qdio_irq *irq_ptr = cdev->private->qdio_data; struct subchannel_id schid; - struct qdio_irq *irq_ptr; int rc; ccw_device_get_schid(cdev, &schid); DBF_EVENT("qestablish:%4x", schid.sch_no); - irq_ptr = cdev->private->qdio_data; if (!irq_ptr) return -ENODEV; mutex_lock(&irq_ptr->setup_mutex); - qdio_setup_irq(init_data); + qdio_setup_irq(irq_ptr, init_data); rc = qdio_establish_thinint(irq_ptr); if (rc) { @@ -1369,8 +1369,8 @@ int qdio_establish(struct qdio_initialize *init_data) qdio_init_buf_states(irq_ptr); mutex_unlock(&irq_ptr->setup_mutex); - qdio_print_subchannel_info(irq_ptr, cdev); - qdio_setup_debug_entries(irq_ptr, cdev); + qdio_print_subchannel_info(irq_ptr); + qdio_setup_debug_entries(irq_ptr); return 0; } EXPORT_SYMBOL_GPL(qdio_establish); @@ -1381,14 +1381,13 @@ EXPORT_SYMBOL_GPL(qdio_establish); */ int qdio_activate(struct ccw_device *cdev) { + struct qdio_irq *irq_ptr = cdev->private->qdio_data; struct subchannel_id schid; - struct qdio_irq *irq_ptr; int rc; ccw_device_get_schid(cdev, &schid); DBF_EVENT("qactivate:%4x", schid.sch_no); - irq_ptr = cdev->private->qdio_data; if (!irq_ptr) return -ENODEV; diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index 7b831bb4e229..bbbefc9f9e04 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -449,10 +449,10 @@ static void setup_qib(struct qdio_irq *irq_ptr, memcpy(irq_ptr->qib.ebcnam, init_data->adapter_name, 8); } -int qdio_setup_irq(struct qdio_initialize *init_data) +int qdio_setup_irq(struct qdio_irq *irq_ptr, struct qdio_initialize *init_data) { + struct ccw_device *cdev = irq_ptr->cdev; struct ciw *ciw; - struct qdio_irq *irq_ptr = init_data->cdev->private->qdio_data; memset(&irq_ptr->qib, 0, sizeof(irq_ptr->qib)); memset(&irq_ptr->siga_flag, 0, sizeof(irq_ptr->siga_flag)); @@ -460,8 +460,9 @@ int qdio_setup_irq(struct qdio_initialize *init_data) memset(&irq_ptr->ssqd_desc, 0, sizeof(irq_ptr->ssqd_desc)); memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat)); - irq_ptr->debugfs_dev = irq_ptr->debugfs_perf = NULL; - irq_ptr->sch_token = irq_ptr->state = irq_ptr->perf_stat_enabled = 0; + irq_ptr->debugfs_dev = NULL; + irq_ptr->sch_token = irq_ptr->perf_stat_enabled = 0; + irq_ptr->state = QDIO_IRQ_STATE_INACTIVE; /* wipes qib.ac, required by ar7063 */ memset(irq_ptr->qdr, 0, sizeof(struct qdr)); @@ -469,9 +470,8 @@ int qdio_setup_irq(struct qdio_initialize *init_data) irq_ptr->int_parm = init_data->int_parm; irq_ptr->nr_input_qs = init_data->no_input_qs; irq_ptr->nr_output_qs = init_data->no_output_qs; - irq_ptr->cdev = init_data->cdev; irq_ptr->scan_threshold = init_data->scan_threshold; - ccw_device_get_schid(irq_ptr->cdev, &irq_ptr->schid); + ccw_device_get_schid(cdev, &irq_ptr->schid); setup_queues(irq_ptr, init_data); if (init_data->irq_poll) { @@ -494,14 +494,14 @@ int qdio_setup_irq(struct qdio_initialize *init_data) /* qdr, qib, sls, slsbs, slibs, sbales are filled now */ /* get qdio commands */ - ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_EQUEUE); + ciw = ccw_device_get_ciw(cdev, CIW_TYPE_EQUEUE); if (!ciw) { DBF_ERROR("%4x NO EQ", irq_ptr->schid.sch_no); return -EINVAL; } irq_ptr->equeue = *ciw; - ciw = ccw_device_get_ciw(init_data->cdev, CIW_TYPE_AQUEUE); + ciw = ccw_device_get_ciw(cdev, CIW_TYPE_AQUEUE); if (!ciw) { DBF_ERROR("%4x NO AQ", irq_ptr->schid.sch_no); return -EINVAL; @@ -509,21 +509,20 @@ int qdio_setup_irq(struct qdio_initialize *init_data) irq_ptr->aqueue = *ciw; /* set new interrupt handler */ - spin_lock_irq(get_ccwdev_lock(irq_ptr->cdev)); - irq_ptr->orig_handler = init_data->cdev->handler; - init_data->cdev->handler = qdio_int_handler; - spin_unlock_irq(get_ccwdev_lock(irq_ptr->cdev)); + spin_lock_irq(get_ccwdev_lock(cdev)); + irq_ptr->orig_handler = cdev->handler; + cdev->handler = qdio_int_handler; + spin_unlock_irq(get_ccwdev_lock(cdev)); return 0; } -void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, - struct ccw_device *cdev) +void qdio_print_subchannel_info(struct qdio_irq *irq_ptr) { char s[80]; snprintf(s, 80, "qdio: %s %s on SC %x using " "AI:%d QEBSM:%d PRI:%d TDD:%d SIGA:%s%s%s%s%s\n", - dev_name(&cdev->dev), + dev_name(&irq_ptr->cdev->dev), (irq_ptr->qib.qfmt == QDIO_QETH_QFMT) ? "OSA" : ((irq_ptr->qib.qfmt == QDIO_ZFCP_QFMT) ? "ZFCP" : "HS"), irq_ptr->schid.sch_no, diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 8f315c53de23..ea09df7209f0 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -207,7 +207,7 @@ static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset) } rc = chsc_sadc(irq_ptr->schid, scssc, summary_indicator_addr, - subchannel_indicator_addr); + subchannel_indicator_addr, tiqdio_airq.isc); if (rc) { DBF_ERROR("%4x SSI r:%4x", irq_ptr->schid.sch_no, scssc->response.code); diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 5256e3ce84e5..35064443e748 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -18,13 +18,13 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/err.h> +#include <linux/freezer.h> #include <linux/interrupt.h> #include <linux/workqueue.h> #include <linux/slab.h> #include <linux/notifier.h> #include <linux/kthread.h> #include <linux/mutex.h> -#include <linux/suspend.h> #include <asm/airq.h> #include <linux/atomic.h> #include <asm/isc.h> @@ -103,16 +103,9 @@ static struct hrtimer ap_poll_timer; */ static unsigned long long poll_timeout = 250000; -/* Suspend flag */ -static int ap_suspend_flag; /* Maximum domain id */ static int ap_max_domain_id; -/* - * Flag to check if domain was set through module parameter domain=. This is - * important when supsend and resume is done in a z/VM environment where the - * domain might change. - */ -static int user_set_domain; + static struct bus_type ap_bus_type; /* Adapter interrupt definitions */ @@ -360,7 +353,7 @@ void ap_wait(enum ap_wait wait) wake_up(&ap_poll_wait); break; } - /* Fall through */ + fallthrough; case AP_WAIT_TIMEOUT: spin_lock_bh(&ap_poll_timer_lock); if (!hrtimer_is_queued(&ap_poll_timer)) { @@ -386,8 +379,6 @@ void ap_request_timeout(struct timer_list *t) { struct ap_queue *aq = from_timer(aq, t, timeout); - if (ap_suspend_flag) - return; spin_lock_bh(&aq->lock); ap_wait(ap_sm_event(aq, AP_EVENT_TIMEOUT)); spin_unlock_bh(&aq->lock); @@ -401,8 +392,7 @@ void ap_request_timeout(struct timer_list *t) */ static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) { - if (!ap_suspend_flag) - tasklet_schedule(&ap_tasklet); + tasklet_schedule(&ap_tasklet); return HRTIMER_NORESTART; } @@ -413,8 +403,7 @@ static enum hrtimer_restart ap_poll_timeout(struct hrtimer *unused) static void ap_interrupt_handler(struct airq_struct *airq, bool floating) { inc_irq_stat(IRQIO_APB); - if (!ap_suspend_flag) - tasklet_schedule(&ap_tasklet); + tasklet_schedule(&ap_tasklet); } /** @@ -486,7 +475,7 @@ static int ap_poll_thread(void *data) while (!kthread_should_stop()) { add_wait_queue(&ap_poll_wait, &wait); set_current_state(TASK_INTERRUPTIBLE); - if (ap_suspend_flag || !ap_pending_requests()) { + if (!ap_pending_requests()) { schedule(); try_to_freeze(); } @@ -587,51 +576,6 @@ static int ap_uevent(struct device *dev, struct kobj_uevent_env *env) return retval; } -static int ap_dev_suspend(struct device *dev) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - - if (ap_dev->drv && ap_dev->drv->suspend) - ap_dev->drv->suspend(ap_dev); - return 0; -} - -static int ap_dev_resume(struct device *dev) -{ - struct ap_device *ap_dev = to_ap_dev(dev); - - if (ap_dev->drv && ap_dev->drv->resume) - ap_dev->drv->resume(ap_dev); - return 0; -} - -static void ap_bus_suspend(void) -{ - AP_DBF(DBF_DEBUG, "%s running\n", __func__); - - ap_suspend_flag = 1; - /* - * Disable scanning for devices, thus we do not want to scan - * for them after removing. - */ - flush_work(&ap_scan_work); - tasklet_disable(&ap_tasklet); -} - -static int __ap_card_devices_unregister(struct device *dev, void *dummy) -{ - if (is_card_dev(dev)) - device_unregister(dev); - return 0; -} - -static int __ap_queue_devices_unregister(struct device *dev, void *dummy) -{ - if (is_queue_dev(dev)) - device_unregister(dev); - return 0; -} - static int __ap_queue_devices_with_id_unregister(struct device *dev, void *data) { if (is_queue_dev(dev) && @@ -640,67 +584,10 @@ static int __ap_queue_devices_with_id_unregister(struct device *dev, void *data) return 0; } -static void ap_bus_resume(void) -{ - int rc; - - AP_DBF(DBF_DEBUG, "%s running\n", __func__); - - /* remove all queue devices */ - bus_for_each_dev(&ap_bus_type, NULL, NULL, - __ap_queue_devices_unregister); - /* remove all card devices */ - bus_for_each_dev(&ap_bus_type, NULL, NULL, - __ap_card_devices_unregister); - - /* Reset thin interrupt setting */ - if (ap_interrupts_available() && !ap_using_interrupts()) { - rc = register_adapter_interrupt(&ap_airq); - ap_airq_flag = (rc == 0); - } - if (!ap_interrupts_available() && ap_using_interrupts()) { - unregister_adapter_interrupt(&ap_airq); - ap_airq_flag = 0; - } - /* Reset domain */ - if (!user_set_domain) - ap_domain_index = -1; - /* Get things going again */ - ap_suspend_flag = 0; - if (ap_airq_flag) - xchg(ap_airq.lsi_ptr, 0); - tasklet_enable(&ap_tasklet); - queue_work(system_long_wq, &ap_scan_work); -} - -static int ap_power_event(struct notifier_block *this, unsigned long event, - void *ptr) -{ - switch (event) { - case PM_HIBERNATION_PREPARE: - case PM_SUSPEND_PREPARE: - ap_bus_suspend(); - break; - case PM_POST_HIBERNATION: - case PM_POST_SUSPEND: - ap_bus_resume(); - break; - default: - break; - } - return NOTIFY_DONE; -} -static struct notifier_block ap_power_notifier = { - .notifier_call = ap_power_event, -}; - -static SIMPLE_DEV_PM_OPS(ap_bus_pm_ops, ap_dev_suspend, ap_dev_resume); - static struct bus_type ap_bus_type = { .name = "ap", .match = &ap_bus_match, .uevent = &ap_uevent, - .pm = &ap_bus_pm_ops, }; static int __ap_revise_reserved(struct device *dev, void *dummy) @@ -873,8 +760,6 @@ EXPORT_SYMBOL(ap_driver_unregister); void ap_bus_force_rescan(void) { - if (ap_suspend_flag) - return; /* processing a asynchronous bus rescan */ del_timer(&ap_config_timer); queue_work(system_long_wq, &ap_scan_work); @@ -1021,7 +906,7 @@ EXPORT_SYMBOL(ap_parse_mask_str); static ssize_t ap_domain_show(struct bus_type *bus, char *buf) { - return snprintf(buf, PAGE_SIZE, "%d\n", ap_domain_index); + return scnprintf(buf, PAGE_SIZE, "%d\n", ap_domain_index); } static ssize_t ap_domain_store(struct bus_type *bus, @@ -1047,14 +932,14 @@ static BUS_ATTR_RW(ap_domain); static ssize_t ap_control_domain_mask_show(struct bus_type *bus, char *buf) { if (!ap_configuration) /* QCI not supported */ - return snprintf(buf, PAGE_SIZE, "not supported\n"); + return scnprintf(buf, PAGE_SIZE, "not supported\n"); - return snprintf(buf, PAGE_SIZE, - "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", - ap_configuration->adm[0], ap_configuration->adm[1], - ap_configuration->adm[2], ap_configuration->adm[3], - ap_configuration->adm[4], ap_configuration->adm[5], - ap_configuration->adm[6], ap_configuration->adm[7]); + return scnprintf(buf, PAGE_SIZE, + "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", + ap_configuration->adm[0], ap_configuration->adm[1], + ap_configuration->adm[2], ap_configuration->adm[3], + ap_configuration->adm[4], ap_configuration->adm[5], + ap_configuration->adm[6], ap_configuration->adm[7]); } static BUS_ATTR_RO(ap_control_domain_mask); @@ -1062,14 +947,14 @@ static BUS_ATTR_RO(ap_control_domain_mask); static ssize_t ap_usage_domain_mask_show(struct bus_type *bus, char *buf) { if (!ap_configuration) /* QCI not supported */ - return snprintf(buf, PAGE_SIZE, "not supported\n"); + return scnprintf(buf, PAGE_SIZE, "not supported\n"); - return snprintf(buf, PAGE_SIZE, - "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", - ap_configuration->aqm[0], ap_configuration->aqm[1], - ap_configuration->aqm[2], ap_configuration->aqm[3], - ap_configuration->aqm[4], ap_configuration->aqm[5], - ap_configuration->aqm[6], ap_configuration->aqm[7]); + return scnprintf(buf, PAGE_SIZE, + "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", + ap_configuration->aqm[0], ap_configuration->aqm[1], + ap_configuration->aqm[2], ap_configuration->aqm[3], + ap_configuration->aqm[4], ap_configuration->aqm[5], + ap_configuration->aqm[6], ap_configuration->aqm[7]); } static BUS_ATTR_RO(ap_usage_domain_mask); @@ -1077,29 +962,29 @@ static BUS_ATTR_RO(ap_usage_domain_mask); static ssize_t ap_adapter_mask_show(struct bus_type *bus, char *buf) { if (!ap_configuration) /* QCI not supported */ - return snprintf(buf, PAGE_SIZE, "not supported\n"); + return scnprintf(buf, PAGE_SIZE, "not supported\n"); - return snprintf(buf, PAGE_SIZE, - "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", - ap_configuration->apm[0], ap_configuration->apm[1], - ap_configuration->apm[2], ap_configuration->apm[3], - ap_configuration->apm[4], ap_configuration->apm[5], - ap_configuration->apm[6], ap_configuration->apm[7]); + return scnprintf(buf, PAGE_SIZE, + "0x%08x%08x%08x%08x%08x%08x%08x%08x\n", + ap_configuration->apm[0], ap_configuration->apm[1], + ap_configuration->apm[2], ap_configuration->apm[3], + ap_configuration->apm[4], ap_configuration->apm[5], + ap_configuration->apm[6], ap_configuration->apm[7]); } static BUS_ATTR_RO(ap_adapter_mask); static ssize_t ap_interrupts_show(struct bus_type *bus, char *buf) { - return snprintf(buf, PAGE_SIZE, "%d\n", - ap_using_interrupts() ? 1 : 0); + return scnprintf(buf, PAGE_SIZE, "%d\n", + ap_using_interrupts() ? 1 : 0); } static BUS_ATTR_RO(ap_interrupts); static ssize_t config_time_show(struct bus_type *bus, char *buf) { - return snprintf(buf, PAGE_SIZE, "%d\n", ap_config_time); + return scnprintf(buf, PAGE_SIZE, "%d\n", ap_config_time); } static ssize_t config_time_store(struct bus_type *bus, @@ -1118,7 +1003,7 @@ static BUS_ATTR_RW(config_time); static ssize_t poll_thread_show(struct bus_type *bus, char *buf) { - return snprintf(buf, PAGE_SIZE, "%d\n", ap_poll_kthread ? 1 : 0); + return scnprintf(buf, PAGE_SIZE, "%d\n", ap_poll_kthread ? 1 : 0); } static ssize_t poll_thread_store(struct bus_type *bus, @@ -1141,7 +1026,7 @@ static BUS_ATTR_RW(poll_thread); static ssize_t poll_timeout_show(struct bus_type *bus, char *buf) { - return snprintf(buf, PAGE_SIZE, "%llu\n", poll_timeout); + return scnprintf(buf, PAGE_SIZE, "%llu\n", poll_timeout); } static ssize_t poll_timeout_store(struct bus_type *bus, const char *buf, @@ -1176,7 +1061,7 @@ static ssize_t ap_max_domain_id_show(struct bus_type *bus, char *buf) max_domain_id = ap_max_domain_id ? : -1; else max_domain_id = 15; - return snprintf(buf, PAGE_SIZE, "%d\n", max_domain_id); + return scnprintf(buf, PAGE_SIZE, "%d\n", max_domain_id); } static BUS_ATTR_RO(ap_max_domain_id); @@ -1187,10 +1072,10 @@ static ssize_t apmask_show(struct bus_type *bus, char *buf) if (mutex_lock_interruptible(&ap_perms_mutex)) return -ERESTARTSYS; - rc = snprintf(buf, PAGE_SIZE, - "0x%016lx%016lx%016lx%016lx\n", - ap_perms.apm[0], ap_perms.apm[1], - ap_perms.apm[2], ap_perms.apm[3]); + rc = scnprintf(buf, PAGE_SIZE, + "0x%016lx%016lx%016lx%016lx\n", + ap_perms.apm[0], ap_perms.apm[1], + ap_perms.apm[2], ap_perms.apm[3]); mutex_unlock(&ap_perms_mutex); return rc; @@ -1218,10 +1103,10 @@ static ssize_t aqmask_show(struct bus_type *bus, char *buf) if (mutex_lock_interruptible(&ap_perms_mutex)) return -ERESTARTSYS; - rc = snprintf(buf, PAGE_SIZE, - "0x%016lx%016lx%016lx%016lx\n", - ap_perms.aqm[0], ap_perms.aqm[1], - ap_perms.aqm[2], ap_perms.aqm[3]); + rc = scnprintf(buf, PAGE_SIZE, + "0x%016lx%016lx%016lx%016lx\n", + ap_perms.aqm[0], ap_perms.aqm[1], + ap_perms.aqm[2], ap_perms.aqm[3]); mutex_unlock(&ap_perms_mutex); return rc; @@ -1567,8 +1452,6 @@ static void ap_scan_bus(struct work_struct *unused) static void ap_config_timeout(struct timer_list *unused) { - if (ap_suspend_flag) - return; queue_work(system_long_wq, &ap_scan_work); } @@ -1641,11 +1524,6 @@ static int __init ap_module_init(void) ap_domain_index); ap_domain_index = -1; } - /* In resume callback we need to know if the user had set the domain. - * If so, we can not just reset it. - */ - if (ap_domain_index >= 0) - user_set_domain = 1; if (ap_interrupts_available()) { rc = register_adapter_interrupt(&ap_airq); @@ -1688,17 +1566,11 @@ static int __init ap_module_init(void) goto out_work; } - rc = register_pm_notifier(&ap_power_notifier); - if (rc) - goto out_pm; - queue_work(system_long_wq, &ap_scan_work); initialised = true; return 0; -out_pm: - ap_poll_thread_stop(); out_work: hrtimer_cancel(&ap_poll_timer); root_device_unregister(ap_root_device); diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 4348fdff1c61..8e8e37b6c0ee 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -91,7 +91,6 @@ enum ap_state { AP_STATE_IDLE, AP_STATE_WORKING, AP_STATE_QUEUE_FULL, - AP_STATE_SUSPEND_WAIT, AP_STATE_REMOVE, /* about to be removed from driver */ AP_STATE_UNBOUND, /* momentary not bound to a driver */ AP_STATE_BORKED, /* broken */ @@ -136,8 +135,6 @@ struct ap_driver { int (*probe)(struct ap_device *); void (*remove)(struct ap_device *); - void (*suspend)(struct ap_device *); - void (*resume)(struct ap_device *); }; #define to_ap_drv(x) container_of((x), struct ap_driver, driver) @@ -259,8 +256,6 @@ void ap_queue_init_reply(struct ap_queue *aq, struct ap_message *ap_msg); struct ap_queue *ap_queue_create(ap_qid_t qid, int device_type); void ap_queue_prepare_remove(struct ap_queue *aq); void ap_queue_remove(struct ap_queue *aq); -void ap_queue_suspend(struct ap_device *ap_dev); -void ap_queue_resume(struct ap_device *ap_dev); void ap_queue_init_state(struct ap_queue *aq); struct ap_card *ap_card_create(int id, int queue_depth, int raw_device_type, diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c index e85bfca1ed16..0a39dfdb6a1d 100644 --- a/drivers/s390/crypto/ap_card.c +++ b/drivers/s390/crypto/ap_card.c @@ -23,7 +23,7 @@ static ssize_t hwtype_show(struct device *dev, { struct ap_card *ac = to_ap_card(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", ac->ap_dev.device_type); + return scnprintf(buf, PAGE_SIZE, "%d\n", ac->ap_dev.device_type); } static DEVICE_ATTR_RO(hwtype); @@ -33,7 +33,7 @@ static ssize_t raw_hwtype_show(struct device *dev, { struct ap_card *ac = to_ap_card(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", ac->raw_hwtype); + return scnprintf(buf, PAGE_SIZE, "%d\n", ac->raw_hwtype); } static DEVICE_ATTR_RO(raw_hwtype); @@ -43,7 +43,7 @@ static ssize_t depth_show(struct device *dev, struct device_attribute *attr, { struct ap_card *ac = to_ap_card(dev); - return snprintf(buf, PAGE_SIZE, "%d\n", ac->queue_depth); + return scnprintf(buf, PAGE_SIZE, "%d\n", ac->queue_depth); } static DEVICE_ATTR_RO(depth); @@ -53,7 +53,7 @@ static ssize_t ap_functions_show(struct device *dev, { struct ap_card *ac = to_ap_card(dev); - return snprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions); + return scnprintf(buf, PAGE_SIZE, "0x%08X\n", ac->functions); } static DEVICE_ATTR_RO(ap_functions); @@ -69,7 +69,7 @@ static ssize_t request_count_show(struct device *dev, spin_lock_bh(&ap_list_lock); req_cnt = atomic64_read(&ac->total_request_count); spin_unlock_bh(&ap_list_lock); - return snprintf(buf, PAGE_SIZE, "%llu\n", req_cnt); + return scnprintf(buf, PAGE_SIZE, "%llu\n", req_cnt); } static ssize_t request_count_store(struct device *dev, @@ -102,7 +102,7 @@ static ssize_t requestq_count_show(struct device *dev, for_each_ap_queue(aq, ac) reqq_cnt += aq->requestq_count; spin_unlock_bh(&ap_list_lock); - return snprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); + return scnprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); } static DEVICE_ATTR_RO(requestq_count); @@ -119,7 +119,7 @@ static ssize_t pendingq_count_show(struct device *dev, for_each_ap_queue(aq, ac) penq_cnt += aq->pendingq_count; spin_unlock_bh(&ap_list_lock); - return snprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); + return scnprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); } static DEVICE_ATTR_RO(pendingq_count); @@ -127,7 +127,8 @@ static DEVICE_ATTR_RO(pendingq_count); static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "ap:t%02X\n", to_ap_dev(dev)->device_type); + return scnprintf(buf, PAGE_SIZE, "ap:t%02X\n", + to_ap_dev(dev)->device_type); } static DEVICE_ATTR_RO(modalias); diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index a317ab484932..0eaf1d04e8df 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -152,7 +152,7 @@ static struct ap_queue_status ap_sm_recv(struct ap_queue *aq) ap_msg->receive(aq, ap_msg, aq->reply); break; } - /* fall through */ + fallthrough; case AP_RESPONSE_NO_PENDING_REPLY: if (!status.queue_empty || aq->queue_count <= 0) break; @@ -201,31 +201,6 @@ static enum ap_wait ap_sm_read(struct ap_queue *aq) } /** - * ap_sm_suspend_read(): Receive pending reply messages from an AP queue - * without changing the device state in between. In suspend mode we don't - * allow sending new requests, therefore just fetch pending replies. - * @aq: pointer to the AP queue - * - * Returns AP_WAIT_NONE or AP_WAIT_AGAIN - */ -static enum ap_wait ap_sm_suspend_read(struct ap_queue *aq) -{ - struct ap_queue_status status; - - if (!aq->reply) - return AP_WAIT_NONE; - status = ap_sm_recv(aq); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - if (aq->queue_count > 0) - return AP_WAIT_AGAIN; - /* fall through */ - default: - return AP_WAIT_NONE; - } -} - -/** * ap_sm_write(): Send messages from the request queue to an AP queue. * @aq: pointer to the AP queue * @@ -254,7 +229,7 @@ static enum ap_wait ap_sm_write(struct ap_queue *aq) aq->state = AP_STATE_WORKING; return AP_WAIT_AGAIN; } - /* fall through */ + fallthrough; case AP_RESPONSE_Q_FULL: aq->state = AP_STATE_QUEUE_FULL; return AP_WAIT_INTERRUPT; @@ -380,7 +355,7 @@ static enum ap_wait ap_sm_setirq_wait(struct ap_queue *aq) case AP_RESPONSE_NORMAL: if (aq->queue_count > 0) return AP_WAIT_AGAIN; - /* fallthrough */ + fallthrough; case AP_RESPONSE_NO_PENDING_REPLY: return AP_WAIT_TIMEOUT; default: @@ -417,10 +392,6 @@ static ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = { [AP_EVENT_POLL] = ap_sm_read, [AP_EVENT_TIMEOUT] = ap_sm_reset, }, - [AP_STATE_SUSPEND_WAIT] = { - [AP_EVENT_POLL] = ap_sm_suspend_read, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, [AP_STATE_REMOVE] = { [AP_EVENT_POLL] = ap_sm_nop, [AP_EVENT_TIMEOUT] = ap_sm_nop, @@ -450,28 +421,6 @@ enum ap_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_event event) } /* - * Power management for queue devices - */ -void ap_queue_suspend(struct ap_device *ap_dev) -{ - struct ap_queue *aq = to_ap_queue(&ap_dev->device); - - /* Poll on the device until all requests are finished. */ - spin_lock_bh(&aq->lock); - aq->state = AP_STATE_SUSPEND_WAIT; - while (ap_sm_event(aq, AP_EVENT_POLL) != AP_WAIT_NONE) - ; - aq->state = AP_STATE_BORKED; - spin_unlock_bh(&aq->lock); -} -EXPORT_SYMBOL(ap_queue_suspend); - -void ap_queue_resume(struct ap_device *ap_dev) -{ -} -EXPORT_SYMBOL(ap_queue_resume); - -/* * AP queue related attributes. */ static ssize_t request_count_show(struct device *dev, @@ -484,7 +433,7 @@ static ssize_t request_count_show(struct device *dev, spin_lock_bh(&aq->lock); req_cnt = aq->total_request_count; spin_unlock_bh(&aq->lock); - return snprintf(buf, PAGE_SIZE, "%llu\n", req_cnt); + return scnprintf(buf, PAGE_SIZE, "%llu\n", req_cnt); } static ssize_t request_count_store(struct device *dev, @@ -511,7 +460,7 @@ static ssize_t requestq_count_show(struct device *dev, spin_lock_bh(&aq->lock); reqq_cnt = aq->requestq_count; spin_unlock_bh(&aq->lock); - return snprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); + return scnprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); } static DEVICE_ATTR_RO(requestq_count); @@ -525,7 +474,7 @@ static ssize_t pendingq_count_show(struct device *dev, spin_lock_bh(&aq->lock); penq_cnt = aq->pendingq_count; spin_unlock_bh(&aq->lock); - return snprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); + return scnprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); } static DEVICE_ATTR_RO(pendingq_count); @@ -540,14 +489,14 @@ static ssize_t reset_show(struct device *dev, switch (aq->state) { case AP_STATE_RESET_START: case AP_STATE_RESET_WAIT: - rc = snprintf(buf, PAGE_SIZE, "Reset in progress.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Reset in progress.\n"); break; case AP_STATE_WORKING: case AP_STATE_QUEUE_FULL: - rc = snprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); break; default: - rc = snprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); + rc = scnprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); } spin_unlock_bh(&aq->lock); return rc; @@ -581,11 +530,11 @@ static ssize_t interrupt_show(struct device *dev, spin_lock_bh(&aq->lock); if (aq->state == AP_STATE_SETIRQ_WAIT) - rc = snprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); else if (aq->interrupt == AP_INTR_ENABLED) - rc = snprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); else - rc = snprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); spin_unlock_bh(&aq->lock); return rc; } diff --git a/drivers/s390/crypto/pkey_api.c b/drivers/s390/crypto/pkey_api.c index 2f33c5fcf676..74e63ec49068 100644 --- a/drivers/s390/crypto/pkey_api.c +++ b/drivers/s390/crypto/pkey_api.c @@ -80,7 +80,7 @@ struct clearaeskeytoken { u8 res1[3]; u32 keytype; /* key type, one of the PKEY_KEYTYPE values */ u32 len; /* bytes actually stored in clearkey[] */ - u8 clearkey[0]; /* clear key value */ + u8 clearkey[]; /* clear key value */ } __packed; /* diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 5c0f53c6dde7..e0bde8518745 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -90,7 +90,7 @@ static void vfio_ap_wait_for_irqclear(int apqn) case AP_RESPONSE_RESET_IN_PROGRESS: if (!status.irq_enabled) return; - /* Fall through */ + fallthrough; case AP_RESPONSE_BUSY: msleep(20); break; diff --git a/drivers/s390/crypto/zcrypt_card.c b/drivers/s390/crypto/zcrypt_card.c index d4f35a183c15..c53cab4b0c9e 100644 --- a/drivers/s390/crypto/zcrypt_card.c +++ b/drivers/s390/crypto/zcrypt_card.c @@ -41,7 +41,7 @@ static ssize_t type_show(struct device *dev, { struct zcrypt_card *zc = to_ap_card(dev)->private; - return snprintf(buf, PAGE_SIZE, "%s\n", zc->type_string); + return scnprintf(buf, PAGE_SIZE, "%s\n", zc->type_string); } static DEVICE_ATTR_RO(type); @@ -52,7 +52,7 @@ static ssize_t online_show(struct device *dev, { struct zcrypt_card *zc = to_ap_card(dev)->private; - return snprintf(buf, PAGE_SIZE, "%d\n", zc->online); + return scnprintf(buf, PAGE_SIZE, "%d\n", zc->online); } static ssize_t online_store(struct device *dev, @@ -86,7 +86,7 @@ static ssize_t load_show(struct device *dev, { struct zcrypt_card *zc = to_ap_card(dev)->private; - return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zc->load)); + return scnprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zc->load)); } static DEVICE_ATTR_RO(load); diff --git a/drivers/s390/crypto/zcrypt_ccamisc.c b/drivers/s390/crypto/zcrypt_ccamisc.c index 110fe9d0cb91..1b835398feec 100644 --- a/drivers/s390/crypto/zcrypt_ccamisc.c +++ b/drivers/s390/crypto/zcrypt_ccamisc.c @@ -592,7 +592,7 @@ int cca_sec2protkey(u16 cardnr, u16 domain, u8 pad2[1]; u8 vptype; u8 vp[32]; /* verification pattern */ - } keyblock; + } ckb; } lv3; } __packed * prepparm; @@ -650,15 +650,16 @@ int cca_sec2protkey(u16 cardnr, u16 domain, prepparm = (struct uskrepparm *) prepcblk->rpl_parmb; /* check the returned keyblock */ - if (prepparm->lv3.keyblock.version != 0x01) { - DEBUG_ERR("%s reply param keyblock version mismatch 0x%02x != 0x01\n", - __func__, (int) prepparm->lv3.keyblock.version); + if (prepparm->lv3.ckb.version != 0x01 && + prepparm->lv3.ckb.version != 0x02) { + DEBUG_ERR("%s reply param keyblock version mismatch 0x%02x\n", + __func__, (int) prepparm->lv3.ckb.version); rc = -EIO; goto out; } /* copy the tanslated protected key */ - switch (prepparm->lv3.keyblock.len) { + switch (prepparm->lv3.ckb.len) { case 16+32: /* AES 128 protected key */ if (protkeytype) @@ -676,13 +677,13 @@ int cca_sec2protkey(u16 cardnr, u16 domain, break; default: DEBUG_ERR("%s unknown/unsupported keylen %d\n", - __func__, prepparm->lv3.keyblock.len); + __func__, prepparm->lv3.ckb.len); rc = -EIO; goto out; } - memcpy(protkey, prepparm->lv3.keyblock.key, prepparm->lv3.keyblock.len); + memcpy(protkey, prepparm->lv3.ckb.key, prepparm->lv3.ckb.len); if (protkeylen) - *protkeylen = prepparm->lv3.keyblock.len; + *protkeylen = prepparm->lv3.ckb.len; out: free_cprbmem(mem, PARMBSIZE, 0); @@ -1260,10 +1261,10 @@ int cca_cipher2protkey(u16 cardnr, u16 domain, const u8 *ckey, prepparm = (struct aurepparm *) prepcblk->rpl_parmb; /* check the returned keyblock */ - if (prepparm->vud.ckb.version != 0x01) { - DEBUG_ERR( - "%s reply param keyblock version mismatch 0x%02x != 0x01\n", - __func__, (int) prepparm->vud.ckb.version); + if (prepparm->vud.ckb.version != 0x01 && + prepparm->vud.ckb.version != 0x02) { + DEBUG_ERR("%s reply param keyblock version mismatch 0x%02x\n", + __func__, (int) prepparm->vud.ckb.version); rc = -EIO; goto out; } @@ -1568,9 +1569,9 @@ static int findcard(u64 mkvp, u16 *pcardnr, u16 *pdomain, return -EINVAL; /* fetch status of all crypto cards */ - device_status = kmalloc_array(MAX_ZDEV_ENTRIES_EXT, - sizeof(struct zcrypt_device_status_ext), - GFP_KERNEL); + device_status = kvmalloc_array(MAX_ZDEV_ENTRIES_EXT, + sizeof(struct zcrypt_device_status_ext), + GFP_KERNEL); if (!device_status) return -ENOMEM; zcrypt_device_status_mask_ext(device_status); @@ -1640,7 +1641,7 @@ static int findcard(u64 mkvp, u16 *pcardnr, u16 *pdomain, } else rc = -ENODEV; - kfree(device_status); + kvfree(device_status); return rc; } diff --git a/drivers/s390/crypto/zcrypt_ccamisc.h b/drivers/s390/crypto/zcrypt_ccamisc.h index 3a9876d5ab0e..8b7a641671c9 100644 --- a/drivers/s390/crypto/zcrypt_ccamisc.h +++ b/drivers/s390/crypto/zcrypt_ccamisc.h @@ -90,7 +90,7 @@ struct cipherkeytoken { u16 kmf1; /* key management field 1 */ u16 kmf2; /* key management field 2 */ u16 kmf3; /* key management field 3 */ - u8 vdata[0]; /* variable part data follows */ + u8 vdata[]; /* variable part data follows */ } __packed; /* Some defines for the CCA AES cipherkeytoken kmf1 field */ diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c index 7cbb384ec535..b447f3e9e4a2 100644 --- a/drivers/s390/crypto/zcrypt_cex2a.c +++ b/drivers/s390/crypto/zcrypt_cex2a.c @@ -204,8 +204,6 @@ static void zcrypt_cex2a_queue_remove(struct ap_device *ap_dev) static struct ap_driver zcrypt_cex2a_queue_driver = { .probe = zcrypt_cex2a_queue_probe, .remove = zcrypt_cex2a_queue_remove, - .suspend = ap_queue_suspend, - .resume = ap_queue_resume, .ids = zcrypt_cex2a_queue_ids, .flags = AP_DRIVER_FLAG_DEFAULT, }; diff --git a/drivers/s390/crypto/zcrypt_cex2c.c b/drivers/s390/crypto/zcrypt_cex2c.c index c78c0d119806..266440168bb7 100644 --- a/drivers/s390/crypto/zcrypt_cex2c.c +++ b/drivers/s390/crypto/zcrypt_cex2c.c @@ -260,8 +260,6 @@ static void zcrypt_cex2c_queue_remove(struct ap_device *ap_dev) static struct ap_driver zcrypt_cex2c_queue_driver = { .probe = zcrypt_cex2c_queue_probe, .remove = zcrypt_cex2c_queue_remove, - .suspend = ap_queue_suspend, - .resume = ap_queue_resume, .ids = zcrypt_cex2c_queue_ids, .flags = AP_DRIVER_FLAG_DEFAULT, }; diff --git a/drivers/s390/crypto/zcrypt_cex4.c b/drivers/s390/crypto/zcrypt_cex4.c index 9a9d02e19774..cdaa8348ad04 100644 --- a/drivers/s390/crypto/zcrypt_cex4.c +++ b/drivers/s390/crypto/zcrypt_cex4.c @@ -87,7 +87,7 @@ static ssize_t cca_serialnr_show(struct device *dev, if (ap_domain_index >= 0) cca_get_info(ac->id, ap_domain_index, &ci, zc->online); - return snprintf(buf, PAGE_SIZE, "%s\n", ci.serial); + return scnprintf(buf, PAGE_SIZE, "%s\n", ci.serial); } static struct device_attribute dev_attr_cca_serialnr = @@ -122,22 +122,24 @@ static ssize_t cca_mkvps_show(struct device *dev, &ci, zq->online); if (ci.new_mk_state >= '1' && ci.new_mk_state <= '3') - n = snprintf(buf, PAGE_SIZE, "AES NEW: %s 0x%016llx\n", - new_state[ci.new_mk_state - '1'], ci.new_mkvp); + n = scnprintf(buf, PAGE_SIZE, "AES NEW: %s 0x%016llx\n", + new_state[ci.new_mk_state - '1'], ci.new_mkvp); else - n = snprintf(buf, PAGE_SIZE, "AES NEW: - -\n"); + n = scnprintf(buf, PAGE_SIZE, "AES NEW: - -\n"); if (ci.cur_mk_state >= '1' && ci.cur_mk_state <= '2') - n += snprintf(buf + n, PAGE_SIZE - n, "AES CUR: %s 0x%016llx\n", - cao_state[ci.cur_mk_state - '1'], ci.cur_mkvp); + n += scnprintf(buf + n, PAGE_SIZE - n, + "AES CUR: %s 0x%016llx\n", + cao_state[ci.cur_mk_state - '1'], ci.cur_mkvp); else - n += snprintf(buf + n, PAGE_SIZE - n, "AES CUR: - -\n"); + n += scnprintf(buf + n, PAGE_SIZE - n, "AES CUR: - -\n"); if (ci.old_mk_state >= '1' && ci.old_mk_state <= '2') - n += snprintf(buf + n, PAGE_SIZE - n, "AES OLD: %s 0x%016llx\n", - cao_state[ci.old_mk_state - '1'], ci.old_mkvp); + n += scnprintf(buf + n, PAGE_SIZE - n, + "AES OLD: %s 0x%016llx\n", + cao_state[ci.old_mk_state - '1'], ci.old_mkvp); else - n += snprintf(buf + n, PAGE_SIZE - n, "AES OLD: - -\n"); + n += scnprintf(buf + n, PAGE_SIZE - n, "AES OLD: - -\n"); return n; } @@ -170,9 +172,9 @@ static ssize_t ep11_api_ordinalnr_show(struct device *dev, ep11_get_card_info(ac->id, &ci, zc->online); if (ci.API_ord_nr > 0) - return snprintf(buf, PAGE_SIZE, "%u\n", ci.API_ord_nr); + return scnprintf(buf, PAGE_SIZE, "%u\n", ci.API_ord_nr); else - return snprintf(buf, PAGE_SIZE, "\n"); + return scnprintf(buf, PAGE_SIZE, "\n"); } static struct device_attribute dev_attr_ep11_api_ordinalnr = @@ -191,11 +193,11 @@ static ssize_t ep11_fw_version_show(struct device *dev, ep11_get_card_info(ac->id, &ci, zc->online); if (ci.FW_version > 0) - return snprintf(buf, PAGE_SIZE, "%d.%d\n", - (int)(ci.FW_version >> 8), - (int)(ci.FW_version & 0xFF)); + return scnprintf(buf, PAGE_SIZE, "%d.%d\n", + (int)(ci.FW_version >> 8), + (int)(ci.FW_version & 0xFF)); else - return snprintf(buf, PAGE_SIZE, "\n"); + return scnprintf(buf, PAGE_SIZE, "\n"); } static struct device_attribute dev_attr_ep11_fw_version = @@ -214,9 +216,9 @@ static ssize_t ep11_serialnr_show(struct device *dev, ep11_get_card_info(ac->id, &ci, zc->online); if (ci.serial[0]) - return snprintf(buf, PAGE_SIZE, "%16.16s\n", ci.serial); + return scnprintf(buf, PAGE_SIZE, "%16.16s\n", ci.serial); else - return snprintf(buf, PAGE_SIZE, "\n"); + return scnprintf(buf, PAGE_SIZE, "\n"); } static struct device_attribute dev_attr_ep11_serialnr = @@ -251,11 +253,11 @@ static ssize_t ep11_card_op_modes_show(struct device *dev, if (ci.op_mode & (1 << ep11_op_modes[i].mode_bit)) { if (n > 0) buf[n++] = ' '; - n += snprintf(buf + n, PAGE_SIZE - n, - "%s", ep11_op_modes[i].mode_txt); + n += scnprintf(buf + n, PAGE_SIZE - n, + "%s", ep11_op_modes[i].mode_txt); } } - n += snprintf(buf + n, PAGE_SIZE - n, "\n"); + n += scnprintf(buf + n, PAGE_SIZE - n, "\n"); return n; } @@ -298,28 +300,28 @@ static ssize_t ep11_mkvps_show(struct device *dev, &di); if (di.cur_wk_state == '0') { - n = snprintf(buf, PAGE_SIZE, "WK CUR: %s -\n", - cwk_state[di.cur_wk_state - '0']); + n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s -\n", + cwk_state[di.cur_wk_state - '0']); } else if (di.cur_wk_state == '1') { - n = snprintf(buf, PAGE_SIZE, "WK CUR: %s 0x", - cwk_state[di.cur_wk_state - '0']); + n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s 0x", + cwk_state[di.cur_wk_state - '0']); bin2hex(buf + n, di.cur_wkvp, sizeof(di.cur_wkvp)); n += 2 * sizeof(di.cur_wkvp); - n += snprintf(buf + n, PAGE_SIZE - n, "\n"); + n += scnprintf(buf + n, PAGE_SIZE - n, "\n"); } else - n = snprintf(buf, PAGE_SIZE, "WK CUR: - -\n"); + n = scnprintf(buf, PAGE_SIZE, "WK CUR: - -\n"); if (di.new_wk_state == '0') { - n += snprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s -\n", - nwk_state[di.new_wk_state - '0']); + n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s -\n", + nwk_state[di.new_wk_state - '0']); } else if (di.new_wk_state >= '1' && di.new_wk_state <= '2') { - n += snprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s 0x", - nwk_state[di.new_wk_state - '0']); + n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s 0x", + nwk_state[di.new_wk_state - '0']); bin2hex(buf + n, di.new_wkvp, sizeof(di.new_wkvp)); n += 2 * sizeof(di.new_wkvp); - n += snprintf(buf + n, PAGE_SIZE - n, "\n"); + n += scnprintf(buf + n, PAGE_SIZE - n, "\n"); } else - n += snprintf(buf + n, PAGE_SIZE - n, "WK NEW: - -\n"); + n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: - -\n"); return n; } @@ -346,11 +348,11 @@ static ssize_t ep11_queue_op_modes_show(struct device *dev, if (di.op_mode & (1 << ep11_op_modes[i].mode_bit)) { if (n > 0) buf[n++] = ' '; - n += snprintf(buf + n, PAGE_SIZE - n, - "%s", ep11_op_modes[i].mode_txt); + n += scnprintf(buf + n, PAGE_SIZE - n, + "%s", ep11_op_modes[i].mode_txt); } } - n += snprintf(buf + n, PAGE_SIZE - n, "\n"); + n += scnprintf(buf + n, PAGE_SIZE - n, "\n"); return n; } @@ -654,8 +656,6 @@ static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev) static struct ap_driver zcrypt_cex4_queue_driver = { .probe = zcrypt_cex4_queue_probe, .remove = zcrypt_cex4_queue_remove, - .suspend = ap_queue_suspend, - .resume = ap_queue_resume, .ids = zcrypt_cex4_queue_ids, .flags = AP_DRIVER_FLAG_DEFAULT, }; diff --git a/drivers/s390/crypto/zcrypt_ep11misc.c b/drivers/s390/crypto/zcrypt_ep11misc.c index 2afe2153b34e..004ce022fc78 100644 --- a/drivers/s390/crypto/zcrypt_ep11misc.c +++ b/drivers/s390/crypto/zcrypt_ep11misc.c @@ -1217,9 +1217,9 @@ int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain, struct ep11_card_info eci; /* fetch status of all crypto cards */ - device_status = kmalloc_array(MAX_ZDEV_ENTRIES_EXT, - sizeof(struct zcrypt_device_status_ext), - GFP_KERNEL); + device_status = kvmalloc_array(MAX_ZDEV_ENTRIES_EXT, + sizeof(struct zcrypt_device_status_ext), + GFP_KERNEL); if (!device_status) return -ENOMEM; zcrypt_device_status_mask_ext(device_status); @@ -1227,7 +1227,7 @@ int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain, /* allocate 1k space for up to 256 apqns */ _apqns = kmalloc_array(256, sizeof(u32), GFP_KERNEL); if (!_apqns) { - kfree(device_status); + kvfree(device_status); return -ENOMEM; } @@ -1282,7 +1282,7 @@ int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain, rc = 0; } - kfree(device_status); + kvfree(device_status); return rc; } EXPORT_SYMBOL(ep11_findcard2); diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c index a36251d138fb..fd1cbb2d6b3f 100644 --- a/drivers/s390/crypto/zcrypt_msgtype6.c +++ b/drivers/s390/crypto/zcrypt_msgtype6.c @@ -590,7 +590,7 @@ struct type86x_reply { struct CPRBX cprbx; unsigned char pad[4]; /* 4 byte function code/rules block ? */ unsigned short length; - char text[0]; + char text[]; } __packed; struct type86_ep11_reply { @@ -801,7 +801,7 @@ static int convert_response_ica(struct zcrypt_queue *zq, if (msg->cprbx.cprb_ver_id == 0x02) return convert_type86_ica(zq, reply, outputdata, outputdatalength); - /* fall through - wrong cprb version is an unknown response */ + fallthrough; /* wrong cprb version is an unknown response */ default: /* Unknown response type, this should NEVER EVER happen */ zq->online = 0; pr_err("Cryptographic device %02x.%04x failed and was set offline\n", @@ -834,7 +834,7 @@ static int convert_response_xcrb(struct zcrypt_queue *zq, } if (msg->cprbx.cprb_ver_id == 0x02) return convert_type86_xcrb(zq, reply, xcRB); - /* fall through - wrong cprb version is an unknown response */ + fallthrough; /* wrong cprb version is an unknown response */ default: /* Unknown response type, this should NEVER EVER happen */ xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ zq->online = 0; @@ -864,7 +864,7 @@ static int convert_response_ep11_xcrb(struct zcrypt_queue *zq, return convert_error(zq, reply); if (msg->cprbx.cprb_ver_id == 0x04) return convert_type86_ep11_xcrb(zq, reply, xcRB); - /* fall through - wrong cprb version is an unknown resp */ + fallthrough; /* wrong cprb version is an unknown resp */ default: /* Unknown response type, this should NEVER EVER happen */ zq->online = 0; pr_err("Cryptographic device %02x.%04x failed and was set offline\n", @@ -894,7 +894,7 @@ static int convert_response_rng(struct zcrypt_queue *zq, return -EINVAL; if (msg->cprbx.cprb_ver_id == 0x02) return convert_type86_rng(zq, reply, data); - /* fall through - wrong cprb version is an unknown response */ + fallthrough; /* wrong cprb version is an unknown response */ default: /* Unknown response type, this should NEVER EVER happen */ zq->online = 0; pr_err("Cryptographic device %02x.%04x failed and was set offline\n", diff --git a/drivers/s390/crypto/zcrypt_queue.c b/drivers/s390/crypto/zcrypt_queue.c index 522c4bc69a08..b7d9fa567880 100644 --- a/drivers/s390/crypto/zcrypt_queue.c +++ b/drivers/s390/crypto/zcrypt_queue.c @@ -42,7 +42,7 @@ static ssize_t online_show(struct device *dev, { struct zcrypt_queue *zq = to_ap_queue(dev)->private; - return snprintf(buf, PAGE_SIZE, "%d\n", zq->online); + return scnprintf(buf, PAGE_SIZE, "%d\n", zq->online); } static ssize_t online_store(struct device *dev, @@ -78,7 +78,7 @@ static ssize_t load_show(struct device *dev, { struct zcrypt_queue *zq = to_ap_queue(dev)->private; - return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zq->load)); + return scnprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zq->load)); } static DEVICE_ATTR_RO(load); diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c index 4fc2056bd227..c75112ee7b97 100644 --- a/drivers/s390/net/ism_drv.c +++ b/drivers/s390/net/ism_drv.c @@ -567,31 +567,11 @@ static void ism_remove(struct pci_dev *pdev) kfree(ism); } -static int ism_suspend(struct device *dev) -{ - struct ism_dev *ism = dev_get_drvdata(dev); - - ism_dev_exit(ism); - return 0; -} - -static int ism_resume(struct device *dev) -{ - struct ism_dev *ism = dev_get_drvdata(dev); - - return ism_dev_init(ism); -} - -static SIMPLE_DEV_PM_OPS(ism_pm_ops, ism_suspend, ism_resume); - static struct pci_driver ism_driver = { .name = DRV_NAME, .id_table = ism_device_table, .probe = ism_probe, .remove = ism_remove, - .driver = { - .pm = &ism_pm_ops, - }, }; static int __init ism_init(void) diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 2b2055b035ee..4fcc6fd0cbd6 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -566,38 +566,4 @@ static inline void queue_up_suspend_work(void) {} #endif /* !CONFIG_PM_AUTOSLEEP */ -#ifdef CONFIG_ARCH_SAVE_PAGE_KEYS -/* - * The ARCH_SAVE_PAGE_KEYS functions can be used by an architecture - * to save/restore additional information to/from the array of page - * frame numbers in the hibernation image. For s390 this is used to - * save and restore the storage key for each page that is included - * in the hibernation image. - */ -unsigned long page_key_additional_pages(unsigned long pages); -int page_key_alloc(unsigned long pages); -void page_key_free(void); -void page_key_read(unsigned long *pfn); -void page_key_memorize(unsigned long *pfn); -void page_key_write(void *address); - -#else /* !CONFIG_ARCH_SAVE_PAGE_KEYS */ - -static inline unsigned long page_key_additional_pages(unsigned long pages) -{ - return 0; -} - -static inline int page_key_alloc(unsigned long pages) -{ - return 0; -} - -static inline void page_key_free(void) {} -static inline void page_key_read(unsigned long *pfn) {} -static inline void page_key_memorize(unsigned long *pfn) {} -static inline void page_key_write(void *address) {} - -#endif /* !CONFIG_ARCH_SAVE_PAGE_KEYS */ - #endif /* _LINUX_SUSPEND_H */ diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 7cbfbeacd68a..c208566c844b 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig @@ -80,9 +80,6 @@ config HIBERNATION For more information take a look at <file:Documentation/power/swsusp.rst>. -config ARCH_SAVE_PAGE_KEYS - bool - config PM_STD_PARTITION string "Default resume partition" depends on HIBERNATION diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index d82b7b88d616..659800157b17 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1744,9 +1744,6 @@ int hibernate_preallocate_memory(void) count += highmem; count -= totalreserve_pages; - /* Add number of pages required for page keys (s390 only). */ - size += page_key_additional_pages(saveable); - /* Compute the maximum number of saveable pages to leave in memory. */ max_size = (count - (size + PAGES_FOR_IO)) / 2 - 2 * DIV_ROUND_UP(reserved_size, PAGE_SIZE); @@ -2075,8 +2072,6 @@ static inline void pack_pfns(unsigned long *buf, struct memory_bitmap *bm) buf[j] = memory_bm_next_pfn(bm); if (unlikely(buf[j] == BM_END_OF_MAP)) break; - /* Save page key for data page (s390 only). */ - page_key_read(buf + j); } } @@ -2226,9 +2221,6 @@ static int unpack_orig_pfns(unsigned long *buf, struct memory_bitmap *bm) if (unlikely(buf[j] == BM_END_OF_MAP)) break; - /* Extract and buffer page key for data page (s390 only). */ - page_key_memorize(buf + j); - if (pfn_valid(buf[j]) && memory_bm_pfn_present(bm, buf[j])) memory_bm_set_bit(bm, buf[j]); else @@ -2623,11 +2615,6 @@ int snapshot_write_next(struct snapshot_handle *handle) if (error) return error; - /* Allocate buffer for page keys. */ - error = page_key_alloc(nr_copy_pages); - if (error) - return error; - hibernate_restore_protection_begin(); } else if (handle->cur <= nr_meta_pages + 1) { error = unpack_orig_pfns(buffer, ©_bm); @@ -2649,8 +2636,6 @@ int snapshot_write_next(struct snapshot_handle *handle) } } else { copy_last_highmem_page(); - /* Restore page key for data page (s390 only). */ - page_key_write(handle->buffer); hibernate_restore_protect_page(handle->buffer); handle->buffer = get_buffer(&orig_bm, &ca); if (IS_ERR(handle->buffer)) @@ -2673,9 +2658,6 @@ int snapshot_write_next(struct snapshot_handle *handle) void snapshot_write_finalize(struct snapshot_handle *handle) { copy_last_highmem_page(); - /* Restore page key for data page (s390 only). */ - page_key_write(handle->buffer); - page_key_free(); hibernate_restore_protect_page(handle->buffer); /* Do that only if we have loaded the image entirely */ if (handle->cur > 1 && handle->cur > nr_meta_pages + nr_copy_pages) { |