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-rw-r--r--arch/s390/Kconfig3
-rw-r--r--arch/s390/Makefile10
-rw-r--r--arch/s390/boot/startup.c88
-rw-r--r--arch/s390/configs/debug_defconfig10
-rw-r--r--arch/s390/configs/defconfig7
-rw-r--r--arch/s390/configs/zfcpdump_defconfig2
-rw-r--r--arch/s390/include/asm/kexec.h6
-rw-r--r--arch/s390/include/asm/pci_io.h7
-rw-r--r--arch/s390/kernel/crash_dump.c4
-rw-r--r--arch/s390/kernel/ipl.c3
-rw-r--r--arch/s390/kernel/machine_kexec_file.c18
-rw-r--r--arch/s390/kernel/setup.c22
-rw-r--r--arch/s390/kernel/syscalls/syscall.tbl1
-rw-r--r--arch/s390/kernel/traps.c2
-rw-r--r--arch/s390/kernel/vdso32/Makefile2
-rw-r--r--arch/s390/kernel/vdso64/Makefile7
-rw-r--r--arch/s390/kvm/kvm-s390.c2
-rw-r--r--arch/s390/lib/test_unwind.c5
18 files changed, 103 insertions, 96 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index f614562d74f0..f6a9475cbc8c 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -47,7 +47,7 @@ config ARCH_SUPPORTS_UPROBES
config KASAN_SHADOW_OFFSET
hex
depends on KASAN
- default 0x18000000000000
+ default 0x1C000000000000
config S390
def_bool y
@@ -193,6 +193,7 @@ config S390
select HAVE_RELIABLE_STACKTRACE
select HAVE_RSEQ
select HAVE_SAMPLE_FTRACE_DIRECT
+ select HAVE_SAMPLE_FTRACE_DIRECT_MULTI
select HAVE_SOFTIRQ_ON_OWN_STACK
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_VIRT_CPU_ACCOUNTING
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 69c45f600273..609e3697324b 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -77,10 +77,12 @@ KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y)
KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y)
ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),)
-cflags-$(CONFIG_CHECK_STACK) += -mstack-size=$(STACK_SIZE)
-ifeq ($(call cc-option,-mstack-size=8192),)
-cflags-$(CONFIG_CHECK_STACK) += -mstack-guard=$(CONFIG_STACK_GUARD)
-endif
+ CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE)
+ ifeq ($(call cc-option,-mstack-size=8192),)
+ CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD)
+ endif
+ export CC_FLAGS_CHECK_STACK
+ cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK)
endif
ifdef CONFIG_EXPOLINE
diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c
index 7571dee72a0c..1aa11a8f57dd 100644
--- a/arch/s390/boot/startup.c
+++ b/arch/s390/boot/startup.c
@@ -149,82 +149,56 @@ static void setup_ident_map_size(unsigned long max_physmem_end)
static void setup_kernel_memory_layout(void)
{
- bool vmalloc_size_verified = false;
- unsigned long vmemmap_off;
- unsigned long vspace_left;
+ unsigned long vmemmap_start;
unsigned long rte_size;
unsigned long pages;
- unsigned long vmax;
pages = ident_map_size / PAGE_SIZE;
/* vmemmap contains a multiple of PAGES_PER_SECTION struct pages */
vmemmap_size = SECTION_ALIGN_UP(pages) * sizeof(struct page);
/* choose kernel address space layout: 4 or 3 levels. */
- vmemmap_off = round_up(ident_map_size, _REGION3_SIZE);
+ vmemmap_start = round_up(ident_map_size, _REGION3_SIZE);
if (IS_ENABLED(CONFIG_KASAN) ||
vmalloc_size > _REGION2_SIZE ||
- vmemmap_off + vmemmap_size + vmalloc_size + MODULES_LEN > _REGION2_SIZE)
- vmax = _REGION1_SIZE;
- else
- vmax = _REGION2_SIZE;
-
- /* keep vmemmap_off aligned to a top level region table entry */
- rte_size = vmax == _REGION1_SIZE ? _REGION2_SIZE : _REGION3_SIZE;
- MODULES_END = vmax;
- if (is_prot_virt_host()) {
- /*
- * forcing modules and vmalloc area under the ultravisor
- * secure storage limit, so that any vmalloc allocation
- * we do could be used to back secure guest storage.
- */
- adjust_to_uv_max(&MODULES_END);
- }
-
-#ifdef CONFIG_KASAN
- if (MODULES_END < vmax) {
- /* force vmalloc and modules below kasan shadow */
- MODULES_END = min(MODULES_END, KASAN_SHADOW_START);
+ vmemmap_start + vmemmap_size + vmalloc_size + MODULES_LEN >
+ _REGION2_SIZE) {
+ MODULES_END = _REGION1_SIZE;
+ rte_size = _REGION2_SIZE;
} else {
- /*
- * leave vmalloc and modules above kasan shadow but make
- * sure they don't overlap with it
- */
- vmalloc_size = min(vmalloc_size, vmax - KASAN_SHADOW_END - MODULES_LEN);
- vmalloc_size_verified = true;
- vspace_left = KASAN_SHADOW_START;
+ MODULES_END = _REGION2_SIZE;
+ rte_size = _REGION3_SIZE;
}
+ /*
+ * forcing modules and vmalloc area under the ultravisor
+ * secure storage limit, so that any vmalloc allocation
+ * we do could be used to back secure guest storage.
+ */
+ adjust_to_uv_max(&MODULES_END);
+#ifdef CONFIG_KASAN
+ /* force vmalloc and modules below kasan shadow */
+ MODULES_END = min(MODULES_END, KASAN_SHADOW_START);
#endif
MODULES_VADDR = MODULES_END - MODULES_LEN;
VMALLOC_END = MODULES_VADDR;
- if (vmalloc_size_verified) {
- VMALLOC_START = VMALLOC_END - vmalloc_size;
- } else {
- vmemmap_off = round_up(ident_map_size, rte_size);
-
- if (vmemmap_off + vmemmap_size > VMALLOC_END ||
- vmalloc_size > VMALLOC_END - vmemmap_off - vmemmap_size) {
- /*
- * allow vmalloc area to occupy up to 1/2 of
- * the rest virtual space left.
- */
- vmalloc_size = min(vmalloc_size, VMALLOC_END / 2);
- }
- VMALLOC_START = VMALLOC_END - vmalloc_size;
- vspace_left = VMALLOC_START;
- }
+ /* allow vmalloc area to occupy up to about 1/2 of the rest virtual space left */
+ vmalloc_size = min(vmalloc_size, round_down(VMALLOC_END / 2, _REGION3_SIZE));
+ VMALLOC_START = VMALLOC_END - vmalloc_size;
- pages = vspace_left / (PAGE_SIZE + sizeof(struct page));
+ /* split remaining virtual space between 1:1 mapping & vmemmap array */
+ pages = VMALLOC_START / (PAGE_SIZE + sizeof(struct page));
pages = SECTION_ALIGN_UP(pages);
- vmemmap_off = round_up(vspace_left - pages * sizeof(struct page), rte_size);
- /* keep vmemmap left most starting from a fresh region table entry */
- vmemmap_off = min(vmemmap_off, round_up(ident_map_size, rte_size));
- /* take care that identity map is lower then vmemmap */
- ident_map_size = min(ident_map_size, vmemmap_off);
+ /* keep vmemmap_start aligned to a top level region table entry */
+ vmemmap_start = round_down(VMALLOC_START - pages * sizeof(struct page), rte_size);
+ /* vmemmap_start is the future VMEM_MAX_PHYS, make sure it is within MAX_PHYSMEM */
+ vmemmap_start = min(vmemmap_start, 1UL << MAX_PHYSMEM_BITS);
+ /* make sure identity map doesn't overlay with vmemmap */
+ ident_map_size = min(ident_map_size, vmemmap_start);
vmemmap_size = SECTION_ALIGN_UP(ident_map_size / PAGE_SIZE) * sizeof(struct page);
- VMALLOC_START = max(vmemmap_off + vmemmap_size, VMALLOC_START);
- vmemmap = (struct page *)vmemmap_off;
+ /* make sure vmemmap doesn't overlay with vmalloc area */
+ VMALLOC_START = max(vmemmap_start + vmemmap_size, VMALLOC_START);
+ vmemmap = (struct page *)vmemmap_start;
}
/*
diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index fd825097cf04..b626bc6e0eaf 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -403,7 +403,6 @@ CONFIG_DEVTMPFS=y
CONFIG_CONNECTOR=y
CONFIG_ZRAM=y
CONFIG_BLK_DEV_LOOP=m
-CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_DRBD=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
@@ -476,6 +475,7 @@ CONFIG_MACVLAN=m
CONFIG_MACVTAP=m
CONFIG_VXLAN=m
CONFIG_BAREUDP=m
+CONFIG_AMT=m
CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_VIRTIO_NET=m
@@ -489,6 +489,7 @@ CONFIG_NLMON=m
# CONFIG_NET_VENDOR_AMD is not set
# CONFIG_NET_VENDOR_AQUANTIA is not set
# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_ASIX is not set
# CONFIG_NET_VENDOR_ATHEROS is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_BROCADE is not set
@@ -571,6 +572,7 @@ CONFIG_WATCHDOG=y
CONFIG_WATCHDOG_NOWAYOUT=y
CONFIG_SOFT_WATCHDOG=m
CONFIG_DIAG288_WATCHDOG=m
+# CONFIG_DRM_DEBUG_MODESET_LOCK is not set
CONFIG_FB=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
@@ -775,12 +777,14 @@ CONFIG_CRC4=m
CONFIG_CRC7=m
CONFIG_CRC8=m
CONFIG_RANDOM32_SELFTEST=y
+CONFIG_XZ_DEC_MICROLZMA=y
CONFIG_DMA_CMA=y
CONFIG_CMA_SIZE_MBYTES=0
CONFIG_PRINTK_TIME=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_INFO_DWARF4=y
+CONFIG_DEBUG_INFO_BTF=y
CONFIG_GDB_SCRIPTS=y
CONFIG_HEADERS_INSTALL=y
CONFIG_DEBUG_SECTION_MISMATCH=y
@@ -807,6 +811,7 @@ CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_MEMORY_NOTIFIER_ERROR_INJECT=m
CONFIG_DEBUG_PER_CPU_MAPS=y
CONFIG_KFENCE=y
+CONFIG_KFENCE_STATIC_KEYS=y
CONFIG_DEBUG_SHIRQ=y
CONFIG_PANIC_ON_OOPS=y
CONFIG_DETECT_HUNG_TASK=y
@@ -842,6 +847,7 @@ CONFIG_FTRACE_STARTUP_TEST=y
CONFIG_SAMPLES=y
CONFIG_SAMPLE_TRACE_PRINTK=m
CONFIG_SAMPLE_FTRACE_DIRECT=m
+CONFIG_SAMPLE_FTRACE_DIRECT_MULTI=m
CONFIG_DEBUG_ENTRY=y
CONFIG_CIO_INJECT=y
CONFIG_KUNIT=m
@@ -860,7 +866,7 @@ CONFIG_FAIL_FUNCTION=y
CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y
CONFIG_LKDTM=m
CONFIG_TEST_MIN_HEAP=y
-CONFIG_KPROBES_SANITY_TEST=y
+CONFIG_KPROBES_SANITY_TEST=m
CONFIG_RBTREE_TEST=y
CONFIG_INTERVAL_TREE_TEST=m
CONFIG_PERCPU_TEST=m
diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig
index c9c3cedff2d8..0056cab27372 100644
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@ -394,7 +394,6 @@ CONFIG_DEVTMPFS=y
CONFIG_CONNECTOR=y
CONFIG_ZRAM=y
CONFIG_BLK_DEV_LOOP=m
-CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_DRBD=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
@@ -467,6 +466,7 @@ CONFIG_MACVLAN=m
CONFIG_MACVTAP=m
CONFIG_VXLAN=m
CONFIG_BAREUDP=m
+CONFIG_AMT=m
CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_VIRTIO_NET=m
@@ -480,6 +480,7 @@ CONFIG_NLMON=m
# CONFIG_NET_VENDOR_AMD is not set
# CONFIG_NET_VENDOR_AQUANTIA is not set
# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_ASIX is not set
# CONFIG_NET_VENDOR_ATHEROS is not set
# CONFIG_NET_VENDOR_BROADCOM is not set
# CONFIG_NET_VENDOR_BROCADE is not set
@@ -762,12 +763,14 @@ CONFIG_PRIME_NUMBERS=m
CONFIG_CRC4=m
CONFIG_CRC7=m
CONFIG_CRC8=m
+CONFIG_XZ_DEC_MICROLZMA=y
CONFIG_DMA_CMA=y
CONFIG_CMA_SIZE_MBYTES=0
CONFIG_PRINTK_TIME=y
CONFIG_DYNAMIC_DEBUG=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_INFO_DWARF4=y
+CONFIG_DEBUG_INFO_BTF=y
CONFIG_GDB_SCRIPTS=y
CONFIG_DEBUG_SECTION_MISMATCH=y
CONFIG_MAGIC_SYSRQ=y
@@ -792,9 +795,11 @@ CONFIG_HIST_TRIGGERS=y
CONFIG_SAMPLES=y
CONFIG_SAMPLE_TRACE_PRINTK=m
CONFIG_SAMPLE_FTRACE_DIRECT=m
+CONFIG_SAMPLE_FTRACE_DIRECT_MULTI=m
CONFIG_KUNIT=m
CONFIG_KUNIT_DEBUGFS=y
CONFIG_LKDTM=m
+CONFIG_KPROBES_SANITY_TEST=m
CONFIG_PERCPU_TEST=m
CONFIG_ATOMIC64_SELFTEST=y
CONFIG_TEST_BPF=m
diff --git a/arch/s390/configs/zfcpdump_defconfig b/arch/s390/configs/zfcpdump_defconfig
index aceccf3b9a88..eed3b9acfa71 100644
--- a/arch/s390/configs/zfcpdump_defconfig
+++ b/arch/s390/configs/zfcpdump_defconfig
@@ -65,9 +65,11 @@ CONFIG_ZFCP=y
# CONFIG_NETWORK_FILESYSTEMS is not set
CONFIG_LSM="yama,loadpin,safesetid,integrity"
# CONFIG_ZLIB_DFLTCC is not set
+CONFIG_XZ_DEC_MICROLZMA=y
CONFIG_PRINTK_TIME=y
# CONFIG_SYMBOLIC_ERRNAME is not set
CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_INFO_BTF=y
CONFIG_DEBUG_FS=y
CONFIG_DEBUG_KERNEL=y
CONFIG_PANIC_ON_OOPS=y
diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h
index ea398a05f643..7f3c9ac34bd8 100644
--- a/arch/s390/include/asm/kexec.h
+++ b/arch/s390/include/asm/kexec.h
@@ -74,6 +74,12 @@ void *kexec_file_add_components(struct kimage *image,
int arch_kexec_do_relocs(int r_type, void *loc, unsigned long val,
unsigned long addr);
+#define ARCH_HAS_KIMAGE_ARCH
+
+struct kimage_arch {
+ void *ipl_buf;
+};
+
extern const struct kexec_file_ops s390_kexec_image_ops;
extern const struct kexec_file_ops s390_kexec_elf_ops;
diff --git a/arch/s390/include/asm/pci_io.h b/arch/s390/include/asm/pci_io.h
index e4dc64cc9c55..287bb88f7698 100644
--- a/arch/s390/include/asm/pci_io.h
+++ b/arch/s390/include/asm/pci_io.h
@@ -14,12 +14,13 @@
/* I/O Map */
#define ZPCI_IOMAP_SHIFT 48
-#define ZPCI_IOMAP_ADDR_BASE 0x8000000000000000UL
+#define ZPCI_IOMAP_ADDR_SHIFT 62
+#define ZPCI_IOMAP_ADDR_BASE (1UL << ZPCI_IOMAP_ADDR_SHIFT)
#define ZPCI_IOMAP_ADDR_OFF_MASK ((1UL << ZPCI_IOMAP_SHIFT) - 1)
#define ZPCI_IOMAP_MAX_ENTRIES \
- ((ULONG_MAX - ZPCI_IOMAP_ADDR_BASE + 1) / (1UL << ZPCI_IOMAP_SHIFT))
+ (1UL << (ZPCI_IOMAP_ADDR_SHIFT - ZPCI_IOMAP_SHIFT))
#define ZPCI_IOMAP_ADDR_IDX_MASK \
- (~ZPCI_IOMAP_ADDR_OFF_MASK - ZPCI_IOMAP_ADDR_BASE)
+ ((ZPCI_IOMAP_ADDR_BASE - 1) & ~ZPCI_IOMAP_ADDR_OFF_MASK)
struct zpci_iomap_entry {
u32 fh;
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index d72a6df058d7..785d54c9350c 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -191,8 +191,8 @@ static int copy_oldmem_user(void __user *dst, void *src, size_t count)
return rc;
} else {
/* Check for swapped kdump oldmem areas */
- if (oldmem_data.start && from - oldmem_data.size < oldmem_data.size) {
- from -= oldmem_data.size;
+ if (oldmem_data.start && from - oldmem_data.start < oldmem_data.size) {
+ from -= oldmem_data.start;
len = min(count, oldmem_data.size - from);
} else if (oldmem_data.start && from < oldmem_data.size) {
len = min(count, oldmem_data.size - from);
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index e2cc35775b99..5ad1dde23dc5 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2156,7 +2156,7 @@ void *ipl_report_finish(struct ipl_report *report)
buf = vzalloc(report->size);
if (!buf)
- return ERR_PTR(-ENOMEM);
+ goto out;
ptr = buf;
memcpy(ptr, report->ipib, report->ipib->hdr.len);
@@ -2195,6 +2195,7 @@ void *ipl_report_finish(struct ipl_report *report)
}
BUG_ON(ptr > buf + report->size);
+out:
return buf;
}
diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c
index 528edff085d9..9975ad200d74 100644
--- a/arch/s390/kernel/machine_kexec_file.c
+++ b/arch/s390/kernel/machine_kexec_file.c
@@ -12,6 +12,7 @@
#include <linux/kexec.h>
#include <linux/module_signature.h>
#include <linux/verification.h>
+#include <linux/vmalloc.h>
#include <asm/boot_data.h>
#include <asm/ipl.h>
#include <asm/setup.h>
@@ -170,6 +171,7 @@ static int kexec_file_add_ipl_report(struct kimage *image,
struct kexec_buf buf;
unsigned long addr;
void *ptr, *end;
+ int ret;
buf.image = image;
@@ -199,9 +201,13 @@ static int kexec_file_add_ipl_report(struct kimage *image,
ptr += len;
}
+ ret = -ENOMEM;
buf.buffer = ipl_report_finish(data->report);
+ if (!buf.buffer)
+ goto out;
buf.bufsz = data->report->size;
buf.memsz = buf.bufsz;
+ image->arch.ipl_buf = buf.buffer;
data->memsz += buf.memsz;
@@ -209,7 +215,9 @@ static int kexec_file_add_ipl_report(struct kimage *image,
data->kernel_buf + offsetof(struct lowcore, ipl_parmblock_ptr);
*lc_ipl_parmblock_ptr = (__u32)buf.mem;
- return kexec_add_buffer(&buf);
+ ret = kexec_add_buffer(&buf);
+out:
+ return ret;
}
void *kexec_file_add_components(struct kimage *image,
@@ -322,3 +330,11 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
}
return 0;
}
+
+int arch_kimage_file_post_load_cleanup(struct kimage *image)
+{
+ vfree(image->arch.ipl_buf);
+ image->arch.ipl_buf = NULL;
+
+ return kexec_image_post_load_cleanup_default(image);
+}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 40405f2304f1..225ab2d0a4c6 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -606,7 +606,7 @@ static void __init setup_resources(void)
static void __init setup_memory_end(void)
{
- memblock_remove(ident_map_size, ULONG_MAX);
+ memblock_remove(ident_map_size, PHYS_ADDR_MAX - ident_map_size);
max_pfn = max_low_pfn = PFN_DOWN(ident_map_size);
pr_notice("The maximum memory size is %luMB\n", ident_map_size >> 20);
}
@@ -638,14 +638,6 @@ static struct notifier_block kdump_mem_nb = {
#endif
/*
- * Make sure that the area above identity mapping is protected
- */
-static void __init reserve_above_ident_map(void)
-{
- memblock_reserve(ident_map_size, ULONG_MAX);
-}
-
-/*
* Reserve memory for kdump kernel to be loaded with kexec
*/
static void __init reserve_crashkernel(void)
@@ -785,7 +777,6 @@ static void __init memblock_add_mem_detect_info(void)
}
memblock_set_bottom_up(false);
memblock_set_node(0, ULONG_MAX, &memblock.memory, 0);
- memblock_dump_all();
}
/*
@@ -826,9 +817,6 @@ static void __init setup_memory(void)
storage_key_init_range(start, end);
psw_set_key(PAGE_DEFAULT_KEY);
-
- /* Only cosmetics */
- memblock_enforce_memory_limit(memblock_end_of_DRAM());
}
static void __init relocate_amode31_section(void)
@@ -999,24 +987,24 @@ void __init setup_arch(char **cmdline_p)
setup_control_program_code();
/* Do some memory reservations *before* memory is added to memblock */
- reserve_above_ident_map();
reserve_kernel();
reserve_initrd();
reserve_certificate_list();
reserve_mem_detect_info();
+ memblock_set_current_limit(ident_map_size);
memblock_allow_resize();
/* Get information about *all* installed memory */
memblock_add_mem_detect_info();
free_mem_detect_info();
+ setup_memory_end();
+ memblock_dump_all();
+ setup_memory();
relocate_amode31_section();
setup_cr();
-
setup_uv();
- setup_memory_end();
- setup_memory();
dma_contiguous_reserve(ident_map_size);
vmcp_cma_reserve();
if (MACHINE_HAS_EDAT2)
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index df5261e5cfe1..ed9c5c2eafad 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -451,3 +451,4 @@
446 common landlock_restrict_self sys_landlock_restrict_self sys_landlock_restrict_self
# 447 reserved for memfd_secret
448 common process_mrelease sys_process_mrelease sys_process_mrelease
+449 common futex_waitv sys_futex_waitv sys_futex_waitv
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 035705c9f23e..2b780786fc68 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -84,7 +84,7 @@ static void default_trap_handler(struct pt_regs *regs)
{
if (user_mode(regs)) {
report_user_fault(regs, SIGSEGV, 0);
- force_fatal_sig(SIGSEGV);
+ force_exit_sig(SIGSEGV);
} else
die(regs, "Unknown program exception");
}
diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile
index e3e6ac5686df..245bddfe9bc0 100644
--- a/arch/s390/kernel/vdso32/Makefile
+++ b/arch/s390/kernel/vdso32/Makefile
@@ -22,7 +22,7 @@ KBUILD_AFLAGS_32 += -m31 -s
KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin
-LDFLAGS_vdso32.so.dbg += -fPIC -shared -nostdlib -soname=linux-vdso32.so.1 \
+LDFLAGS_vdso32.so.dbg += -fPIC -shared -soname=linux-vdso32.so.1 \
--hash-style=both --build-id=sha1 -melf_s390 -T
$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile
index 6568de236701..9e2b95a222a9 100644
--- a/arch/s390/kernel/vdso64/Makefile
+++ b/arch/s390/kernel/vdso64/Makefile
@@ -8,8 +8,9 @@ ARCH_REL_TYPE_ABS += R_390_GOT|R_390_PLT
include $(srctree)/lib/vdso/Makefile
obj-vdso64 = vdso_user_wrapper.o note.o
obj-cvdso64 = vdso64_generic.o getcpu.o
-CFLAGS_REMOVE_getcpu.o = -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE)
-CFLAGS_REMOVE_vdso64_generic.o = -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE)
+VDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE) $(CC_FLAGS_CHECK_STACK)
+CFLAGS_REMOVE_getcpu.o = $(VDSO_CFLAGS_REMOVE)
+CFLAGS_REMOVE_vdso64_generic.o = $(VDSO_CFLAGS_REMOVE)
# Build rules
@@ -25,7 +26,7 @@ KBUILD_AFLAGS_64 += -m64 -s
KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin
-ldflags-y := -fPIC -shared -nostdlib -soname=linux-vdso64.so.1 \
+ldflags-y := -fPIC -shared -soname=linux-vdso64.so.1 \
--hash-style=both --build-id=sha1 -T
$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index c6257f625929..14a18ba5ff2c 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -585,6 +585,8 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
r = KVM_MAX_VCPUS;
else if (sclp.has_esca && sclp.has_64bscao)
r = KVM_S390_ESCA_CPU_SLOTS;
+ if (ext == KVM_CAP_NR_VCPUS)
+ r = min_t(unsigned int, num_online_cpus(), r);
break;
case KVM_CAP_S390_COW:
r = MACHINE_HAS_ESOP;
diff --git a/arch/s390/lib/test_unwind.c b/arch/s390/lib/test_unwind.c
index cfc5f5557c06..bc7973359ae2 100644
--- a/arch/s390/lib/test_unwind.c
+++ b/arch/s390/lib/test_unwind.c
@@ -173,10 +173,11 @@ static noinline int unwindme_func4(struct unwindme *u)
}
/*
- * trigger specification exception
+ * Trigger operation exception; use insn notation to bypass
+ * llvm's integrated assembler sanity checks.
*/
asm volatile(
- " mvcl %%r1,%%r1\n"
+ " .insn e,0x0000\n" /* illegal opcode */
"0: nopr %%r7\n"
EX_TABLE(0b, 0b)
:);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.