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2022-03-03riscv: Fix config KASAN && SPARSEMEM && !SPARSE_VMEMMAPAlexandre Ghiti1-2/+1
In order to get the pfn of a struct page* when sparsemem is enabled without vmemmap, the mem_section structures need to be initialized which happens in sparse_init. But kasan_early_init calls pfn_to_page way before sparse_init is called, which then tries to dereference a null mem_section pointer. Fix this by removing the usage of this function in kasan_early_init. Fixes: 8ad8b72721d0 ("riscv: Add KASAN support") Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com> Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-03-03riscv: Fix is_linear_mapping with recent move of KASAN regionAlexandre Ghiti2-1/+2
The KASAN region was recently moved between the linear mapping and the kernel mapping, is_linear_mapping used to check the validity of an address by using the start of the kernel mapping, which is now wrong. Fix this by using the maximum size of the physical memory. Fixes: f7ae02333d13 ("riscv: Move KASAN mapping next to the kernel mapping") Signed-off-by: Alexandre Ghiti <alexandre.ghiti@canonical.com> Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-03-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski41-143/+291
net/batman-adv/hard-interface.c commit 690bb6fb64f5 ("batman-adv: Request iflink once in batadv-on-batadv check") commit 6ee3c393eeb7 ("batman-adv: Demote batadv-on-batadv skip error message") https://lore.kernel.org/all/20220302163049.101957-1-sw@simonwunderlich.de/ net/smc/af_smc.c commit 4d08b7b57ece ("net/smc: Fix cleanup when register ULP fails") commit 462791bbfa35 ("net/smc: add sysctl interface for SMC") https://lore.kernel.org/all/20220302112209.355def40@canb.auug.org.au/ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-03cpuidle: PSCI: Move the `has_lpi` check to the beginning of the functionMario Limonciello1-3/+3
Currently the first thing checked is whether the PCSI cpu_suspend function has been initialized. Another change will be overloading `acpi_processor_ffh_lpi_probe` and calling it sooner. So make the `has_lpi` check the first thing checked to prepare for that change. Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-03Merge tag 'mips-fixes-5.17_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds3-17/+27
Pull MIPS fixes from Thomas Bogendoerfer: - Fix memory detection for MT7621 devices - Fix setnocoherentio kernel option - Fix warning when CONFIG_SCHED_CORE is enabled * tag 'mips-fixes-5.17_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: ralink: mt7621: use bitwise NOT instead of logical mips: setup: fix setnocoherentio() boolean setting MIPS: smp: fill in sibling and core maps earlier MIPS: ralink: mt7621: do memory detection on KSEG1
2022-03-03mm: remove the extra ZONE_DEVICE struct page refcountChristoph Hellwig1-1/+0
ZONE_DEVICE struct pages have an extra reference count that complicates the code for put_page() and several places in the kernel that need to check the reference count to see that a page is not being used (gup, compaction, migration, etc.). Clean up the code so the reference count doesn't need to be treated specially for ZONE_DEVICE pages. Note that this excludes the special idle page wakeup for fsdax pages, which still happens at refcount 1. This is a separate issue and will be sorted out later. Given that only fsdax pages require the notifiacation when the refcount hits 1 now, the PAGEMAP_OPS Kconfig symbol can go away and be replaced with a FS_DAX check for this hook in the put_page fastpath. Based on an earlier patch from Ralph Campbell <rcampbell@nvidia.com>. Link: https://lkml.kernel.org/r/20220210072828.2930359-8-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Ralph Campbell <rcampbell@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> Tested-by: "Sierra Guiza, Alejandro (Alex)" <alex.sierra@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Chaitanya Kulkarni <kch@nvidia.com> Cc: Christian Knig <christian.koenig@amd.com> Cc: Karol Herbst <kherbst@redhat.com> Cc: Lyude Paul <lyude@redhat.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-03-03mm: don't include <linux/memremap.h> in <linux/mm.h>Christoph Hellwig3-0/+3
Move the check for the actual pgmap types that need the free at refcount one behavior into the out of line helper, and thus avoid the need to pull memremap.h into mm.h. Link: https://lkml.kernel.org/r/20220210072828.2930359-7-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Felix Kuehling <Felix.Kuehling@amd.com> Tested-by: "Sierra Guiza, Alejandro (Alex)" <alex.sierra@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Chaitanya Kulkarni <kch@nvidia.com> Cc: Karol Herbst <kherbst@redhat.com> Cc: Lyude Paul <lyude@redhat.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> Cc: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-03-03dma-mapping: remove CONFIG_DMA_REMAPChristoph Hellwig2-2/+2
CONFIG_DMA_REMAP is used to build a few helpers around the core vmalloc code, and to use them in case there is a highmem page in dma-direct, and to make dma coherent allocations be able to use non-contiguous pages allocations for DMA allocations in the dma-iommu layer. Right now it needs to be explicitly selected by architectures, and is only done so by architectures that require remapping to deal with devices that are not DMA coherent. Make it unconditional for builds with CONFIG_MMU as it is very little extra code, but makes it much more likely that large DMA allocations succeed on x86. This fixes hot plugging a NVMe thunderbolt SSD for me, which tries to allocate a 1MB buffer that is otherwise hard to obtain due to memory fragmentation on a heavily used laptop. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
2022-03-03perf/x86/intel/uncore: Fix the build on !CONFIG_PHYS_ADDR_T_64BITIngo Molnar1-1/+3
'val2' is unused if !CONFIG_PHYS_ADDR_T_64BIT: arch/x86/events/intel/uncore_discovery.c:213:18: error: unused variable ‘val2’ [-Werror=unused-variable] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2022-03-02Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds2-8/+30
Pull ARM fixes from Russell King: - Fix kgdb breakpoint for Thumb2 - Fix dependency for BITREVERSE kconfig - Fix nommu early_params and __setup returns * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9182/1: mmu: fix returns from early_param() and __setup() functions ARM: 9178/1: fix unmet dependency on BITREVERSE for HAVE_ARCH_BITREVERSE ARM: Fix kgdb breakpoint for Thumb2
2022-03-02bpf, x86: Set header->size properly before freeing itSong Liu1-1/+4
On do_jit failure path, the header is freed by bpf_jit_binary_pack_free. While bpf_jit_binary_pack_free doesn't require proper ro_header->size, bpf_prog_pack_free still uses it. Set header->size in bpf_int_jit_compile before calling bpf_jit_binary_pack_free. Fixes: 1022a5498f6f ("bpf, x86_64: Use bpf_jit_binary_pack_alloc") Fixes: 33c9805860e5 ("bpf: Introduce bpf_jit_binary_pack_[alloc|finalize|free]") Reported-by: Kui-Feng Lee <kuifeng@fb.com> Signed-off-by: Song Liu <song@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20220302175126.247459-3-song@kernel.org
2022-03-02x86: Disable HAVE_ARCH_HUGE_VMALLOC on 32-bit x86Song Liu1-1/+1
kernel test robot reported kernel BUG like: [ 44.587744][ T1] kernel BUG at arch/x86/mm/physaddr.c:76! [ 44.590151][ T1] __vmalloc_area_node (mm/vmalloc.c:622 mm/vmalloc.c:2995) [ 44.590151][ T1] __vmalloc_node_range (mm/vmalloc.c:3108) [ 44.590151][ T1] __vmalloc_node (mm/vmalloc.c:3157) which is triggered with HAVE_ARCH_HUGE_VMALLOC on 32-bit x86. Since BPF only uses HAVE_ARCH_HUGE_VMALLOC for x86_64, turn it off for 32-bit x86. Fixes: fac54e2bfb5b ("x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP") Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Song Liu <song@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20220302175126.247459-2-song@kernel.org
2022-03-02arm64: dts: lg: align pl330 node name with dtschemaKrzysztof Kozlowski2-2/+2
Fixes dtbs_check warnings like: dma@c1128000: $nodename:0: 'dma@c1128000' does not match '^dma-controller(@.*)?$' Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Acked-by: Chanho Min <chanho.min@lge.com> Link: https://lore.kernel.org/r/20220129175514.298942-2-krzysztof.kozlowski@canonical.com
2022-03-02arm64: dts: lg: add dma-cells to pl330 nodeKrzysztof Kozlowski2-0/+2
dma-cells property is required for dma-controller. Fixes dtbs_check warnings like: dma@c1128000: '#dma-cells' is a required property Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Acked-by: Chanho Min <chanho.min@lge.com> Link: https://lore.kernel.org/r/20220129175514.298942-1-krzysztof.kozlowski@canonical.com
2022-03-02arm64: dts: juno: align pl330 node name with dtschemaKrzysztof Kozlowski1-1/+1
Fixes dtbs_check warning: dma@7ff00000: $nodename:0: 'dma@7ff00000' does not match '^dma-controller(@.*)?$' Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20220129175621.299254-1-krzysztof.kozlowski@canonical.com
2022-03-02KVM: x86: pull kvm->srcu read-side to kvm_arch_vcpu_ioctl_runPaolo Bonzini1-12/+13
kvm_arch_vcpu_ioctl_run is already doing srcu_read_lock/unlock in two places, namely vcpu_run and post_kvm_run_save, and a third is actually needed around the call to vcpu->arch.complete_userspace_io to avoid the following splat: WARNING: suspicious RCU usage arch/x86/kvm/pmu.c:190 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by CPU 28/KVM/370841: #0: ff11004089f280b8 (&vcpu->mutex){+.+.}-{3:3}, at: kvm_vcpu_ioctl+0x87/0x730 [kvm] Call Trace: <TASK> dump_stack_lvl+0x59/0x73 reprogram_fixed_counter+0x15d/0x1a0 [kvm] kvm_pmu_trigger_event+0x1a3/0x260 [kvm] ? free_moved_vector+0x1b4/0x1e0 complete_fast_pio_in+0x8a/0xd0 [kvm] This splat is not at all unexpected, since complete_userspace_io callbacks can execute similar code to vmexits. For example, SVM with nrips=false will call into the emulator from svm_skip_emulated_instruction(). While it's tempting to never acquire kvm->srcu for an uninitialized vCPU, practically speaking there's no penalty to acquiring kvm->srcu "early" as the KVM_MP_STATE_UNINITIALIZED path is a one-time thing per vCPU. On the other hand, seemingly innocuous helpers like kvm_apic_accept_events() and sync_regs() can theoretically reach code that might access SRCU-protected data structures, e.g. sync_regs() can trigger forced existing of nested mode via kvm_vcpu_ioctl_x86_set_vcpu_events(). Reported-by: Like Xu <likexu@tencent.com> Co-developed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-03-02KVM: x86/mmu: Passing up the error state of mmu_alloc_shadow_roots()Like Xu1-1/+1
Just like on the optional mmu_alloc_direct_roots() path, once shadow path reaches "r = -EIO" somewhere, the caller needs to know the actual state in order to enter error handling and avoid something worse. Fixes: 4a38162ee9f1 ("KVM: MMU: load PDPTRs outside mmu_lock") Signed-off-by: Like Xu <likexu@tencent.com> Reviewed-by: Sean Christopherson <seanjc@google.com> Message-Id: <20220301124941.48412-1-likexu@tencent.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-03-02KVM: arm64: Enable Cortex-A510 erratum 2077057 by defaultMark Brown1-0/+1
The recently added configuration option for Cortex A510 erratum 2077057 does not have a "default y" unlike other errata fixes. This appears to simply be an oversight since the help text suggests enabling the option if unsure and there's nothing in the commit log to suggest it is intentional. Fixes: 1dd498e5e26ad ("KVM: arm64: Workaround Cortex-A510's single-step and PAC trap errata") Signed-off-by: Mark Brown <broonie@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220225184658.172527-1-broonie@kernel.org
2022-03-02platform/x86: Add AMD system management interfaceSuma Hegde2-0/+219
Recent Fam19h EPYC server line of processors from AMD support system management functionality via HSMP (Host System Management Port) interface. The Host System Management Port (HSMP) is an interface to provide OS-level software with access to system management functions via a set of mailbox registers. More details on the interface can be found in chapter "7 Host System Management Port (HSMP)" of the following PPR https://www.amd.com/system/files/TechDocs/55898_B1_pub_0.50.zip This patch adds new amd_hsmp module under the drivers/platforms/x86/ which creates miscdevice with an IOCTL interface to the user space. /dev/hsmp is for running the hsmp mailbox commands. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Signed-off-by: Naveen Krishna Chatradhi <nchatrad@amd.com> Reviewed-by: Carlos Bilbao <carlos.bilbao@amd.com> Acked-by: Song Liu <song@kernel.org> Reviewed-by: Nathan Fontenot <nathan.fontenot@amd.com> Link: https://lore.kernel.org/r/20220222050501.18789-1-nchatrad@amd.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2022-03-01arm64: dts: broadcom: Fix sata nodenameFrank Wunderlich1-1/+1
After converting ahci-platform txt binding to yaml nodename is reported as not matching the standard: arch/arm64/boot/dts/broadcom/northstar2/ns2-svk.dt.yaml: ahci@663f2000: $nodename:0: 'ahci@663f2000' does not match '^sata(@.*)?$' Fix it to match binding. Fixes: ac9aae00f0fc ("arm64: dts: Add SATA3 AHCI and SATA3 PHY DT nodes for NS2") Signed-off-by: Frank Wunderlich <frank-w@public-files.de> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2022-03-01arm64: dts: armada-3720-turris-mox: Add missing ethernet0 aliasPali Rohár1-0/+1
U-Boot uses ethernet* aliases for setting MAC addresses. Therefore define also alias for ethernet0. Fixes: 7109d817db2e ("arm64: dts: marvell: add DTS for Turris Mox") Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-03-01s390/mm: convert pte_val()/pXd_val() into functionsHeiko Carstens1-5/+25
Disallow constructs like this: pte_val(*pte) = __pa(addr) | prot; which would directly write into a page table. Users are supposed to use the set_pte()/set_pXd() primitives, which guarantee block concurrent (aka atomic) writes. Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/mm,gmap: don't use pte_val()/pXd_val() as lvalueHeiko Carstens1-4/+4
Convert pgtable code so pte_val()/pXd_val() aren't used as lvalue anymore. This allows in later step to convert pte_val()/pXd_val() to functions, which in turn makes it impossible to use these macros to modify page table entries like they have been used before. Therefore a construct like this: pte_val(*pte) = __pa(addr) | prot; which would directly write into a page table, isn't possible anymore with the last step of this series. Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/mm,hugetlb: don't use pte_val()/pXd_val() as lvalueHeiko Carstens1-21/+13
Convert pgtable code so pte_val()/pXd_val() aren't used as lvalue anymore. This allows in later step to convert pte_val()/pXd_val() to functions, which in turn makes it impossible to use these macros to modify page table entries like they have been used before. Therefore a construct like this: pte_val(*pte) = __pa(addr) | prot; which would directly write into a page table, isn't possible anymore with the last step of this series. Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/mm,pageattr: don't use pte_val()/pXd_val() as lvalueHeiko Carstens1-8/+8
Convert pgtable code so pte_val()/pXd_val() aren't used as lvalue anymore. This allows in later step to convert pte_val()/pXd_val() to functions, which in turn makes it impossible to use these macros to modify page table entries like they have been used before. Therefore a construct like this: pte_val(*pte) = __pa(addr) | prot; which would directly write into a page table, isn't possible anymore with the last step of this series. Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/mm,pgtable: don't use pte_val()/pXd_val() as lvalueHeiko Carstens2-89/+77
Convert pgtable code so pte_val()/pXd_val() aren't used as lvalue anymore. This allows in later step to convert pte_val()/pXd_val() to functions, which in turn makes it impossible to use these macros to modify page table entries like they have been used before. Therefore a construct like this: pte_val(*pte) = __pa(addr) | prot; which would directly write into a page table, isn't possible anymore with the last step of this series. Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/mm: use set_pXd()/set_pte() helper functions everywhereHeiko Carstens9-50/+51
Use the new set_pXd()/set_pte() helper functions at all places where page table entries are modified. Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/mm: add set_pte_bit()/clear_pte_bit() helper functionsHeiko Carstens1-0/+30
Add set_pte_bit()/clear_pte_bit() and set_pXd_bit()/clear_pXd_bit helper functions which are supposed to be used if bits within ptes/pXds are set/cleared. The only point of these helper functions is to get more readable code. This is quite similar to what arm64 has. Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/mm: add set_pXd()/set_pte() helper functionsHeiko Carstens1-0/+25
Add set_pXd()/set_pte() helper functions which must be used to update page table entries. The new helpers use WRITE_ONCE() to make sure that a page table entry is written to only once. Without this the compiler could otherwise generate code which writes several times to a page table entry when updating its contents from invalid to valid, which could lead to surprising results especially for multithreaded processes... Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/entry: remove unused expoline thunkVasily Gorbik1-1/+0
Remove __s390_indirect_jump_r13use_r14 expoline thunk unused since commit fbbdfca5c553 ("s390/entry.S: factor out SIEEXIT macro"). Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/ftrace: make use of epsw to get psw maskHeiko Carstens1-4/+10
Finally use epsw to create a complete psw mask within pt_regs. Without this only some bits are correct, while other bits are (incorrectly) always zero. The epsw instruction is quite heavy weight, however given that this only effects ftrace_regs_caller this seems to be the right thing, so we finally get a complete psw mask for ftrace kprobed functions. Reviewed-by: Sven Schnelle <svens@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/ptrace: remove opencoded offsetofHeiko Carstens1-88/+76
Remove opencoded offsetof and use offsetof instead. The generated code is identical before/after this change. Reviewed-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/smp: sort out physical vs virtual pointers usageAlexander Gordeev1-3/+3
With commit 5789284710aa ("s390/smp: reallocate IPL CPU lowcore") virtual addresses are wrongly passed to memblock_free_late() and SPX instructions on IPL CPU reinitialization. Note: this does not fix a bug currently, since virtual and physical addresses are identical. Fixes: 5789284710aa ("s390/smp: reallocate IPL CPU lowcore") Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/test_unwind: fix and extend kprobes testVasily Gorbik1-33/+50
Running kprobe test on a kernel built with clang 14 didn't actually trigger pgm_pre_handler() and no unwinder code was called. Even though do_report_trap() is a global symbol, clang inlined it in several local functions including illegal_op() handler, so that kprobbing a global symbol didn't have a desired effect. To achieve the same test result (unwinding from a program check handler) introduce a local function and probe an instruction in the middle, so that kprobe doesn't take KPROBE_ON_FTRACE path. While at it, add another test for KPROBE_ON_FTRACE. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/test_unwind: add ftrace testVasily Gorbik1-0/+59
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/test_unwind: add "backtrace" module parameterVasily Gorbik1-1/+5
By default no backtraces are printed when a test succeeds, but sometimes it is useful to spot issues automated test doesn't cover. Add "backtrace" module parameter to force it. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/test_unwind: minor cleanupVasily Gorbik1-44/+28
- make current_test static - use current_test consistently - add TEST_WITH_FLAGS macro to contract parametrized tests definition Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/test_unwind: show tests as skipped if unsupportedVasily Gorbik1-6/+3
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390: always use the packed stack layoutVasily Gorbik5-37/+5
-mpacked-stack option has been supported by both minimum gcc and clang versions for a while. With commit e2bc3e91d91e ("scripts/min-tool-version.sh: Raise minimum clang version to 13.0.0 for s390") minimum clang version now also supports a combination of flags -mpacked-stack -mbackchain -pg -mfentry and fulfills all requirements to always enable the packed stack layout. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01Merge branch 'fixes' into featuresVasily Gorbik8-10/+65
This helps to avoid several merge conflicts later. * fixes: s390/extable: fix exception table sorting s390/ftrace: fix arch_ftrace_get_regs implementation s390/ftrace: fix ftrace_caller/ftrace_regs_caller generation s390/setup: preserve memory at OLDMEM_BASE and OLDMEM_SIZE s390/cio: verify the driver availability for path_event call s390/module: fix building test_modules_helpers.o with clang MAINTAINERS: downgrade myself to Reviewer for s390 MAINTAINERS: add Alexander Gordeev as maintainer for s390 Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds4-19/+28
Pull kvm fixes from Paolo Bonzini: "The bigger part of the change is a revert for x86 hosts. Here the second patch was supposed to fix the first, but in reality it was just as broken, so both have to go. x86 host: - Revert incorrect assumption that cr3 changes come with preempt notifier callbacks (they don't when static branches are changed, for example) ARM host: - Correctly synchronise PMR and co on PSCI CPU_SUSPEND - Skip tests that depend on GICv3 when the HW isn't available" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: selftests: aarch64: Skip tests if we can't create a vgic-v3 Revert "KVM: VMX: Save HOST_CR3 in vmx_prepare_switch_to_guest()" Revert "KVM: VMX: Save HOST_CR3 in vmx_set_host_fs_gs()" KVM: arm64: Don't miss pending interrupts for suspended vCPU
2022-03-01s390/extable: fix exception table sortingHeiko Carstens1-2/+7
s390 has a swap_ex_entry_fixup function, however it is not being used since common code expects a swap_ex_entry_fixup define. If it is not defined the default implementation will be used. So fix this by adding a proper define. However also the implementation of the function must be fixed, since a NULL value for handler has a special meaning and must not be adjusted. Luckily all of this doesn't fix a real bug currently: the main extable is correctly sorted during build time, and for runtime sorting there is currently no case where the handler field is not NULL. Fixes: 05a68e892e89 ("s390/kernel: expand exception table logic to allow new handling options") Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/ftrace: fix arch_ftrace_get_regs implementationHeiko Carstens4-5/+18
arch_ftrace_get_regs is supposed to return a struct pt_regs pointer only if the pt_regs structure contains all register contents, which means it must have been populated when created via ftrace_regs_caller. If it was populated via ftrace_caller the contents are not complete (the psw mask part is missing), and therefore a NULL pointer needs be returned. The current code incorrectly always returns a struct pt_regs pointer. Fix this by adding another pt_regs flag which indicates if the contents are complete, and fix arch_ftrace_get_regs accordingly. Fixes: 894979689d3a ("s390/ftrace: provide separate ftrace_caller/ftrace_regs_caller implementations") Reported-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Reviewed-by: Sven Schnelle <svens@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/ftrace: fix ftrace_caller/ftrace_regs_caller generationHeiko Carstens1-0/+35
ftrace_caller was used for both ftrace_caller and ftrace_regs_caller, which means that the target address of the hotpatch trampoline was never updated. With commit 894979689d3a ("s390/ftrace: provide separate ftrace_caller/ftrace_regs_caller implementations") a separate ftrace_regs_caller entry point was implemeted, however it was forgotten to implement the necessary changes for ftrace_modify_call and ftrace_make_call, where the branch target has to be modified accordingly. Therefore add the missing code now. Fixes: 894979689d3a ("s390/ftrace: provide separate ftrace_caller/ftrace_regs_caller implementations") Reviewed-by: Sven Schnelle <svens@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01s390/setup: preserve memory at OLDMEM_BASE and OLDMEM_SIZEAlexander Egorenkov1-0/+2
We need to preserve the values at OLDMEM_BASE and OLDMEM_SIZE which are used by zgetdump in case when kdump crashes. In that case zgetdump will attempt to read OLDMEM_BASE and OLDMEM_SIZE in order to find out where the memory range [0 - OLDMEM_SIZE] belonging to the production kernel is. Fixes: f1a546947431 ("s390/setup: don't reserve memory that occupied decompressor's head") Cc: stable@vger.kernel.org # 5.15+ Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Acked-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-03-01Merge tag 'qcom-drivers-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/driversArnd Bergmann1-2/+1
Qualcomm driver updates for v5.18 This refactors the Qualcomm mdt file loader, to partially decouple it from the SCM peripheral-authentication-service. This is needed as newer platforms, such as the Qualcomm SM8450, require the metadata to remain accessible to TrustZone during a longer time. This is followed by the introduction of remoteproc drivers for SM8450 (Snapdragon 8 Gen 1). It changes the way hardware version differences are handled in the LLCC driver and introduces support for Qualcomm SM8450. While updating the dt binding for LLCC it also introduces the missing SM8350 compatible. The ocmem and aoss drivers gains missing put_device() calls and rpmpd gains a missing check for kcalloc() failure. The SPM driver is updated to avoid instantiating the SPM cpuidle devices if the CPUs aren't controlled by SPM, such as when Snapdragon 8916 operates in 32-bit mode without PSCI. The RPM power-domain driver gains MSM8226 support. Lastly the socinfo driver gains knowledge about a few new SoCs and PMICs. * tag 'qcom-drivers-for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (37 commits) soc: qcom: rpmpd: Add MSM8226 support dt-bindings: power: rpmpd: Add MSM8226 to rpmpd binding soc: qcom: mdt_loader: Fix split-firmware condition dt-bindings: arm: msm: Add LLCC compatible for SM8450 dt-bindings: arm: msm: Add LLCC compatible for SM8350 soc: qcom: llcc: Add configuration data for SM8450 SoC soc: qcom: llcc: Update register offsets for newer LLCC HW soc: qcom: llcc: Add missing llcc configuration data soc: qcom: llcc: Add write-cache cacheable support soc: qcom: llcc: Update the logic for version info extraction soc: qcom: llcc: Add support for 16 ways of allocation soc: qcom: socinfo: Add some more PMICs and SoCs firmware: qcom: scm: Add support for MC boot address API firmware: qcom: scm: Drop cpumask parameter from set_boot_addr() firmware: qcom: scm: Simplify set_cold/warm_boot_addr() cpuidle: qcom-spm: Check if any CPU is managed by SPM remoteproc: qcom: pas: Add SM8450 remoteproc support dt-bindings: remoteproc: qcom: pas: Add SM8450 PAS compatibles remoteproc: qcom: pas: Carry PAS metadata context soc: qcom: mdt_loader: Extract PAS operations ... Link: https://lore.kernel.org/r/20220301042055.1804859-1-bjorn.andersson@linaro.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-03-01Merge tag 'qcom-arm64-defconfig-for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/defconfigArnd Bergmann1-0/+3
Qualcomm ARM64 defconfig updates for v5.17 This enables GCC, TLMM pinctrl and the main interconnect provider for the SM8450 platform. * tag 'qcom-arm64-defconfig-for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: arm64: defconfig: Add SM8450 icc configs arm64: defconfig: Add SM8450 pinctrl config arm64: defconfig: Add SM8450 GCC config Link: https://lore.kernel.org/r/20211222152219.3752973-1-bjorn.andersson@linaro.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-03-01KVM: SVM: Disable preemption across AVIC load/put during APICv refreshSean Christopherson3-50/+59
Disable preemption when loading/putting the AVIC during an APICv refresh. If the vCPU task is preempted and migrated ot a different pCPU, the unprotected avic_vcpu_load() could set the wrong pCPU in the physical ID cache/table. Pull the necessary code out of avic_vcpu_{,un}blocking() and into a new helper to reduce the probability of introducing this exact bug a third time. Fixes: df7e4827c549 ("KVM: SVM: call avic_vcpu_load/avic_vcpu_put when enabling/disabling AVIC") Cc: stable@vger.kernel.org Reported-by: Maxim Levitsky <mlevitsk@redhat.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-03-01mips: ralink: fix a refcount leak in ill_acc_of_setup()Hangyu Hua1-0/+1
of_node_put(np) needs to be called when pdev == NULL. Signed-off-by: Hangyu Hua <hbh25y@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2022-03-01arm64: defconfig: enable the CVP driverDinh Nguyen1-0/+1
Build the CVP driver in the standard arm64 defconfig. Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@intel.com> Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
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