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This patch corrects the SPDX License Identifier style
in the arm64 Hardware Architecture related files.
Suggested-by: Joe Perches <[email protected]>
Signed-off-by: Nishad Kamdar <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Our __smp_store_release() and __smp_load_acquire() macros use inline
assembly, which is opaque to kasan. This means that kasan can't catch
erroneous use of these.
This patch adds kasan instrumentation to both.
Cc: Catalin Marinas <[email protected]>
Signed-off-by: Mark Rutland <[email protected]>
[will: consistently use *p as argument to sizeof]
Signed-off-by: Will Deacon <[email protected]>
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This change uses the original virt_to_page() (the one with __pa()) to
check the given virtual address if CONFIG_DEBUG_VIRTUAL=y.
Recently, I worked on a bug: a driver passes a symbol address to
dma_map_single() and the virt_to_page() (called by dma_map_single())
does not work for non-linear addresses after commit 9f2875912dac
("arm64: mm: restrict virt_to_page() to the linear mapping").
I tried to trap the bug by enabling CONFIG_DEBUG_VIRTUAL but it
did not work - bacause the commit removes the __pa() from
virt_to_page() but CONFIG_DEBUG_VIRTUAL checks the virtual address
in __pa()/__virt_to_phys().
A simple solution is to use the original virt_to_page()
(the one with__pa()) if CONFIG_DEBUG_VIRTUAL=y.
Cc: Ard Biesheuvel <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Miles Chen <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Advertise ARM64_HAS_DCPODP when both DC CVAP and DC CVADP are supported.
Even though we don't use this feature now, we provide it for consistency
with DCPOP and anticipate it being used in the future.
Signed-off-by: Andrew Murray <[email protected]>
Reviewed-by: Dave Martin <[email protected]>
Reviewed-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Allow users of dcache_by_line_op to specify cvadp as an op.
Signed-off-by: Andrew Murray <[email protected]>
Reviewed-by: Dave Martin <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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ARMv8.5 builds upon the ARMv8.2 DC CVAP instruction by introducing a DC
CVADP instruction which cleans the data cache to the point of deep
persistence. Let's expose this support via the arm64 ELF hwcaps.
Signed-off-by: Andrew Murray <[email protected]>
Reviewed-by: Dave Martin <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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The ARMv8.5 DC CVADP instruction may be trapped to EL1 via
SCTLR_EL1.UCI therefore let's provide a handler for it.
Just like the CVAP instruction we use a 'sys' instruction instead of
the 'dc' alias to avoid build issues with older toolchains.
Signed-off-by: Andrew Murray <[email protected]>
Reviewed-by: Mark Rutland <[email protected]>
Reviewed-by: Dave Martin <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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The introduction of AT_HWCAP2 introduced accessors which ensure that
hwcap features are set and tested appropriately.
Let's now mandate access to elf_hwcap via these accessors by making
elf_hwcap static within cpufeature.c.
Signed-off-by: Andrew Murray <[email protected]>
Reviewed-by: Dave Martin <[email protected]>
Reviewed-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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As we will exhaust the first 32 bits of AT_HWCAP let's start
exposing AT_HWCAP2 to userspace to give us up to 64 caps.
Whilst it's possible to use the remaining 32 bits of AT_HWCAP, we
prefer to expand into AT_HWCAP2 in order to provide a consistent
view to userspace between ILP32 and LP64. However internal to the
kernel we prefer to continue to use the full space of elf_hwcap.
To reduce complexity and allow for future expansion, we now
represent hwcaps in the kernel as ordinals and use a
KERNEL_HWCAP_ prefix. This allows us to support automatic feature
based module loading for all our hwcaps.
We introduce cpu_set_feature to set hwcaps which complements the
existing cpu_have_feature helper. These helpers allow us to clean
up existing direct uses of elf_hwcap and reduce any future effort
required to move beyond 64 caps.
For convenience we also introduce cpu_{have,set}_named_feature which
makes use of the cpu_feature macro to allow providing a hwcap name
without a {KERNEL_}HWCAP_ prefix.
Signed-off-by: Andrew Murray <[email protected]>
[will: use const_ilog2() and tweak documentation]
Signed-off-by: Will Deacon <[email protected]>
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Add regs_get_argument() which returns N th argument of the function
call. On arm64, it supports up to 8th argument.
Note that this chooses most probably assignment, in some case
it can be incorrect (e.g. passing data structure or floating
point etc.)
This enables ftrace kprobe events to access kernel function
arguments via $argN syntax.
Signed-off-by: Masami Hiramatsu <[email protected]>
[will: tidied up the comment a bit]
Signed-off-by: Will Deacon <[email protected]>
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We use $(LD) to link vmlinux, modules, decompressors, etc.
VDSO is the only exceptional case where $(CC) is used as the linker
driver, but I do not know why we need to do so. VDSO uses a special
linker script, and does not link standard libraries at all.
I changed the Makefile to use $(LD) rather than $(CC). I tested this,
and VDSO worked for me.
Users will be able to use their favorite linker (e.g. lld instead of
of bfd) by passing LD= from the command line.
My plan is to rewrite all VDSO Makefiles to use $(LD), then delete
cc-ldoption.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Currently, compat tasks running on arm64 can allocate memory up to
TASK_SIZE_32 (UL(0x100000000)).
This means that mmap() allocations, if we treat them as returning an
array, are not compliant with the sections 6.5.8 of the C standard
(C99) which states that: "If the expression P points to an element of
an array object and the expression Q points to the last element of the
same array object, the pointer expression Q+1 compares greater than P".
Redefine TASK_SIZE_32 to address the issue.
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: <[email protected]>
Reported-by: Jann Horn <[email protected]>
Signed-off-by: Vincenzo Frascino <[email protected]>
[will: fixed typo in comment]
Signed-off-by: Will Deacon <[email protected]>
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When the CPU comes out of suspend, the firmware may have modified the OS
Double Lock Register. Save it in an unused slot of cpu_suspend_ctx, and
restore it on resume.
Cc: <[email protected]>
Signed-off-by: Jean-Philippe Brucker <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Some firmwares may reboot CPUs with OS Double Lock set. Make sure that
it is unlocked, in order to use debug exceptions.
Cc: <[email protected]>
Signed-off-by: Jean-Philippe Brucker <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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The logic for early allocation of page tables is duplicated between
pgd_kernel_pgtable_alloc() and pgd_pgtable_alloc(). Drop the duplication
by calling one from the other and renaming pgd_kernel_pgtable_alloc()
accordingly.
Signed-off-by: Will Deacon <[email protected]>
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Switch from per mm_struct to per pmd page table lock by enabling
ARCH_ENABLE_SPLIT_PMD_PTLOCK. This provides better granularity for
large system.
I'm not sure if there is contention on mm->page_table_lock. Given
the option comes at no cost (apart from initializing more spin
locks), why not enable it now.
We only do so when pmd is not folded, so we don't mistakenly call
pgtable_pmd_page_ctor() on pud or p4d in pgd_pgtable_alloc().
Signed-off-by: Yu Zhao <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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ARM64 standard pgtable functions are going to use pgtable_page_[ctor|dtor]
or pgtable_pmd_page_[ctor|dtor] constructs. At present KVM guest stage-2
PUD|PMD|PTE level page tabe pages are allocated with __get_free_page()
via mmu_memory_cache_alloc() but released with standard pud|pmd_free() or
pte_free_kernel(). These will fail once they start calling into pgtable_
[pmd]_page_dtor() for pages which never originally went through respective
constructor functions. Hence convert all stage-2 page table page release
functions to call buddy directly while freeing pages.
Reviewed-by: Suzuki K Poulose <[email protected]>
Acked-by: Yu Zhao <[email protected]>
Acked-by: Marc Zyngier <[email protected]>
Signed-off-by: Anshuman Khandual <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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init_mm doesn't require page table lock to be initialized at
any level. Add a separate page table allocator for it, and the
new one skips page table ctors.
The ctors allocate memory when ALLOC_SPLIT_PTLOCKS is set. Not
calling them avoids memory leak in case we call pte_free_kernel()
on init_mm.
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Yu Zhao <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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For pte page, use pgtable_page_ctor(); for pmd page, use
pgtable_pmd_page_ctor(); and for the rest (pud, p4d and pgd),
don't use any.
For now, we don't select ARCH_ENABLE_SPLIT_PMD_PTLOCK and
pgtable_pmd_page_ctor() is a nop. When we do in patch 3, we
make sure pmd is not folded so we won't mistakenly call
pgtable_pmd_page_ctor() on pud or p4d.
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Yu Zhao <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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brk_handler() now looks pretty strange and can be refactored to drop its
funny 'handler_found' local variable altogether.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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kprobes and uprobes reserve some BRK immediates for installing their
probes. Define these along with the other reservations in brk-imm.h
and rename the ESR definitions to be consistent with the others that we
already have.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Now that the debug hook dispatching code takes the triggering exception
level into account, there's no need for the hooks themselves to poke
around with user_mode(regs).
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Kprobes bypasses our debug hook registration code so that it doesn't
get tangled up with recursive debug exceptions from things like lockdep:
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-February/324385.html
However, since then, (a) the hook list has become RCU protected and (b)
the kprobes hooks were found not to filter out exceptions from userspace
correctly. On top of that, the step handler is invoked directly from
single_step_handler(), which *does* use the debug hook list, so it's
clearly not the end of the world.
For now, have kprobes use the debug hook registration API like everybody
else. We can revisit this in the future if this is found to limit
coverage significantly.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Mixing kernel and user debug hooks together is highly error-prone as it
relies on all of the hooks to figure out whether the exception came from
kernel or user, and then to act accordingly.
Make our debug hook code a little more robust by maintaining separate
hook lists for user and kernel, with separate registration functions
to force callers to be explicit about the exception levels that they
care about.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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The comment next to the definition of our 'break_hook' list head is
at best wrong but mainly just meaningless. Rip it out.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Since the 'addr' parameter contains an UNKNOWN value for non-watchpoint
debug exceptions, rename it to 'unused' for those hooks so we don't get
tempted to use it in the future.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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do_debug_exception() goes out of its way to return a value that isn't
ever used, so just make the thing void.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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In preparation for arm64 supporting ftrace built on other compiler
options, let's have Makefiles remove the $(CC_FLAGS_FTRACE) flags,
whatever these may be, rather than assuming '-pg'.
There should be no functional change as a result of this patch.
Reviewed-by: Mark Rutland <[email protected]>
Acked-by: Andrey Ryabinin <[email protected]>
Signed-off-by: Torsten Duwe <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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In preparation for arm64 supporting ftrace built on other compiler
options, let's have Makefiles remove the $(CC_FLAGS_FTRACE) flags,
whatever these maybe, rather than assuming '-pg'.
While at it, fix arm32 as well. There should be no functional change as
a result of this patch.
Reviewed-by: Mark Rutland <[email protected]>
Acked-by: Ard Biesheuvel <[email protected]>
Signed-off-by: Torsten Duwe <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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In preparation for arm64 supporting ftrace built on other compiler
options, let's have the arm64 Makefiles remove the $(CC_FLAGS_FTRACE)
flags, whatever these may be, rather than assuming '-pg'.
There should be no functional change as a result of this patch.
Reviewed-by: Mark Rutland <[email protected]>
Signed-off-by: Torsten Duwe <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Following assembly code is not trivial; make it slightly easier to read by
replacing some of the magic numbers with the defines which are already
present in sysreg.h.
Reviewed-by: Dave Martin <[email protected]>
Signed-off-by: Alexandru Elisei <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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- $(call if_changed,...) must have FORCE as a prerequisite
- vdso.lds is a generated file, so it should be prefixed with
$(obj)/ instead of $(src)/.
- cmd_vdsosym is a one-liner rule, so the assignment with '='
is simpler.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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If the initrd payload isn't completely accessible via the linear map,
then we print a warning during boot and nobble the virtual address of
the payload so that we ignore it later on.
Unfortunately, since commit c756c592e442 ("arm64: Utilize
phys_initrd_start/phys_initrd_size"), the virtual address isn't
initialised until later anyway, so we need to nobble the size of the
payload to ensure that we don't try to use it later on.
Fixes: c756c592e442 ("arm64: Utilize phys_initrd_start/phys_initrd_size")
Reported-by: Pierre Kuo <[email protected]>
Acked-by: Florian Fainelli <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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The call to of_get_next_child returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last
usage.
Detected by coccinelle with the following warnings:
./arch/arm64/kernel/cpu_ops.c:102:1-7: ERROR: missing of_node_put;
acquired a node pointer with refcount incremented on line 69, but
without a corresponding object release within this function.
Signed-off-by: Wen Yang <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Will Deacon <[email protected]>
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show_pte() doesn't have any external callers, so make it static.
Signed-off-by: Will Deacon <[email protected]>
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Since commit ad67b74d2469d9b8 ("printk: hash addresses printed with %p"),
two obfuscated kernel pointer are printed at every boot:
vdso: 2 pages (1 code @ (____ptrval____), 1 data @ (____ptrval____))
Remove the the print completely, as it's useless without the addresses.
Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Matteo Croce <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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When debugging with CONFIG_PAGE_OWNER, I noticed that the min_low_pfn
on arm64 is always zero and the page owner scanning has to start from zero.
We have to loop a while before we see the first valid pfn.
(see: read_page_owner())
Setup min_low_pfn to save some loops.
Before setting min_low_pfn:
[ 21.265602] min_low_pfn=0, *ppos=0
Page allocated via order 0, mask 0x100cca(GFP_HIGHUSER_MOVABLE)
PFN 262144 type Movable Block 512 type Movable Flags 0x8001e
referenced|uptodate|dirty|lru|swapbacked)
prep_new_page+0x13c/0x140
get_page_from_freelist+0x254/0x1068
__alloc_pages_nodemask+0xd4/0xcb8
After setting min_low_pfn:
[ 11.025787] min_low_pfn=262144, *ppos=0
Page allocated via order 0, mask 0x100cca(GFP_HIGHUSER_MOVABLE)
PFN 262144 type Movable Block 512 type Movable Flags 0x8001e
referenced|uptodate|dirty|lru|swapbacked)
prep_new_page+0x13c/0x140
get_page_from_freelist+0x254/0x1068
__alloc_pages_nodemask+0xd4/0xcb8
shmem_alloc_page+0x7c/0xa0
shmem_alloc_and_acct_page+0x124/0x1e8
shmem_getpage_gfp.isra.7+0x118/0x878
shmem_write_begin+0x38/0x68
Signed-off-by: Miles Chen <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Building a kernel with W=1 generates several warnings due to abuse of
kernel-doc comments:
| arch/arm64/mm/numa.c:281: warning: Cannot understand *
| on line 281 - I thought it was a doc line
Tidy up the comments to remove the warnings.
Fixes: 1a2db300348b ("arm64, numa: Add NUMA support for arm64 platforms.")
Signed-off-by: Qian Cai <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Although we don't actually make use of the 'max_mapnr' global variable,
we do set it to a junk value for !CONFIG_FLATMEM configurations that
leave mem_map uninitialised.
To avoid somebody tripping over this in future, set 'max_mapnr' using
max_pfn, which is calculated directly from the memblock information.
Reviewed-by: Catalin Marinas <[email protected]>
Signed-off-by: Muchun Song <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
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Pull KVM fixes from Paolo Bonzini:
"A collection of x86 and ARM bugfixes, and some improvements to
documentation.
On top of this, a cleanup of kvm_para.h headers, which were exported
by some architectures even though they not support KVM at all. This is
responsible for all the Kbuild changes in the diffstat"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
Documentation: kvm: clarify KVM_SET_USER_MEMORY_REGION
KVM: doc: Document the life cycle of a VM and its resources
KVM: selftests: complete IO before migrating guest state
KVM: selftests: disable stack protector for all KVM tests
KVM: selftests: explicitly disable PIE for tests
KVM: selftests: assert on exit reason in CR4/cpuid sync test
KVM: x86: update %rip after emulating IO
x86/kvm/hyper-v: avoid spurious pending stimer on vCPU init
kvm/x86: Move MSR_IA32_ARCH_CAPABILITIES to array emulated_msrs
KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts
kvm: don't redefine flags as something else
kvm: mmu: Used range based flushing in slot_handle_level_range
KVM: export <linux/kvm_para.h> and <asm/kvm_para.h> iif KVM is supported
KVM: x86: remove check on nr_mmu_pages in kvm_arch_commit_memory_region()
kvm: nVMX: Add a vmentry check for HOST_SYSENTER_ESP and HOST_SYSENTER_EIP fields
KVM: SVM: Workaround errata#1096 (insn_len maybe zero on SMAP violation)
KVM: Reject device ioctls from processes other than the VM's creator
KVM: doc: Fix incorrect word ordering regarding supported use of APIs
KVM: x86: fix handling of role.cr4_pae and rename it to 'gpte_size'
KVM: nVMX: Do not inherit quadrant and invalid for the root shadow EPT
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A pile of x86 updates:
- Prevent exceeding he valid physical address space in the /dev/mem
limit checks.
- Move all header content inside the header guard to prevent compile
failures.
- Fix the bogus __percpu annotation in this_cpu_has() which makes
sparse very noisy.
- Disable switch jump tables completely when retpolines are enabled.
- Prevent leaking the trampoline address"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/realmode: Make set_real_mode_mem() static inline
x86/cpufeature: Fix __percpu annotation in this_cpu_has()
x86/mm: Don't exceed the valid physical address space
x86/retpolines: Disable switch jump tables when retpolines are enabled
x86/realmode: Don't leak the trampoline kernel address
x86/boot: Fix incorrect ifdeffery scope
x86/resctrl: Remove unused variable
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf tooling fixes from Thomas Gleixner:
"Core libraries:
- Fix max perf_event_attr.precise_ip detection.
- Fix parser error for uncore event alias
- Fixup ordering of kernel maps after obtaining the main kernel map
address.
Intel PT:
- Fix TSC slip where A TSC packet can slip past MTC packets so that
the timestamp appears to go backwards.
- Fixes for exported-sql-viewer GUI conversion to python3.
ARM coresight:
- Fix the build by adding a missing case value for enumeration value
introduced in newer library, that now is the required one.
tool headers:
- Syncronize kernel headers with the kernel, getting new io_uring and
pidfd_send_signal syscalls so that 'perf trace' can handle them"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf pmu: Fix parser error for uncore event alias
perf scripts python: exported-sql-viewer.py: Fix python3 support
perf scripts python: exported-sql-viewer.py: Fix never-ending loop
perf machine: Update kernel map address and re-order properly
tools headers uapi: Sync powerpc's asm/kvm.h copy with the kernel sources
tools headers: Update x86's syscall_64.tbl and uapi/asm-generic/unistd
tools headers uapi: Update drm/i915_drm.h
tools arch x86: Sync asm/cpufeatures.h with the kernel sources
tools headers uapi: Sync linux/fcntl.h to get the F_SEAL_FUTURE_WRITE addition
tools headers uapi: Sync asm-generic/mman-common.h and linux/mman.h
perf evsel: Fix max perf_event_attr.precise_ip detection
perf intel-pt: Fix TSC slip
perf cs-etm: Add missing case value
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug fixes from Thomas Gleixner:
"Two SMT/hotplug related fixes:
- Prevent crash when HOTPLUG_CPU is disabled and the CPU bringup
aborts. This is triggered with the 'nosmt' command line option, but
can happen by any abort condition. As the real unplug code is not
compiled in, prevent the fail by keeping the CPU in zombie state.
- Enforce HOTPLUG_CPU for SMP on x86 to avoid the above situation
completely. With 'nosmt' being a popular option it's required to
unplug the half brought up sibling CPUs (due to the MCE wreckage)
completely"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/smp: Enforce CONFIG_HOTPLUG_CPU when SMP=y
cpu/hotplug: Prevent crash when CPU bringup fails on CONFIG_HOTPLUG_CPU=n
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixlet from Thomas Gleixner:
"Trivial update to the maintainers file"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Remove deleted file from futex file pattern
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fixes from Thomas Gleixner:
"A small set of core updates:
- Make the watchdog respect the selected CPU mask again. That was
broken by the rework of the watchdog thread management and caused
inconsistent state and NMI watchdog being unstoppable.
- Ensure that the objtool build can find the libelf location.
- Remove dead kcore stub code"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
watchdog: Respect watchdog cpumask on CPU hotplug
objtool: Query pkg-config for libelf location
proc/kcore: Remove unused kclist_add_remap()
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Three non-regression fixes.
- Our optimised memcmp could read past the end of one of the buffers
and potentially trigger a page fault leading to an oops.
- Some of our code to read energy management data on PowerVM had an
endian bug leading to bogus results.
- When reporting a machine check exception we incorrectly reported
TLB multihits as D-Cache multhits due to a missing entry in the
array of causes.
Thanks to: Chandan Rajendra, Gautham R. Shenoy, Mahesh Salgaonkar,
Segher Boessenkool, Vaidyanathan Srinivasan"
* tag 'powerpc-5.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pseries/mce: Fix misleading print for TLB mutlihit
powerpc/pseries/energy: Use OF accessor functions to read ibm,drc-indexes
powerpc/64: Fix memcmp reading past the end of src/dest
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git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
- Revert "dmaengine: stm32-mdma: Add a check on read_u32_array" as that
caused regression
- Fix MAINTAINER file uniphier-mdmac.c file path
* tag 'dmaengine-fix-5.1-rc3' of git://git.infradead.org/users/vkoul/slave-dma:
MAINTAINERS: Fix uniphier-mdmac.c file path
dmaengine: stm32-mdma: Revert "dmaengine: stm32-mdma: Add a check on read_u32_array"
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git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED fixes from Jacek Anaszewski:
- fix refcnt leak on interface rename
- use memcpy in device_name_store() to avoid including garbage from a
previous, longer value in the device_name
- fix a potential NULL pointer dereference in case of_match_device()
cannot find a match
* tag 'led-fixes-for-5.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: trigger: netdev: use memcpy in device_name_store
leds: pca9532: fix a potential NULL pointer dereference
leds: trigger: netdev: fix refcnt leak on interface rename
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"As you can see [in the git history] I was away on leave and Bartosz
kindly stepped in and collected a slew of fixes, I pulled them into my
tree in two sets and merged some two more fixes (fixing my own caused
bugs) on top.
Summary:
- Revert the extended use of gpio_set_config() and think about how we
can do this properly.
- Fix up the SPI CS GPIO handling so it now works properly on the SPI
bus children, as intended.
- Error paths and driver fixes"
* tag 'gpio-v5.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: mockup: use simple_read_from_buffer() in debugfs read callback
gpio: of: Fix of_gpiochip_add() error path
gpio: of: Check for "spi-cs-high" in child instead of parent node
gpio: of: Check propname before applying "cs-gpios" quirks
gpio: mockup: fix debugfs read
Revert "gpio: use new gpio_set_config() helper in more places"
gpio: aspeed: fix a potential NULL pointer dereference
gpio: amd-fch: Fix bogus SPDX identifier
gpio: adnp: Fix testing wrong value in adnp_gpio_direction_input
gpio: exar: add a check for the return value of ida_simple_get fails
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