Move PSW_DEFAULT_KEY from uapi/asm/ptrace.h to asm/ptrace.h. This is
possible, since it depends on PAGE_DEFAULT_ACC which is not part of
uapi. Or in other words: this define cannot be used without error.
Therefore remove it from uapi.
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
cmd_vdso_check checks if there are any dynamic relocations in
vdso64.so.dbg. When kernel is compiled with
-mno-pic-data-is-text-relative, R_390_RELATIVE relocs are generated and
this results in kernel build error.
kpatch uses -mno-pic-data-is-text-relative option when building the
kernel to prevent relative addressing between code and data. The flag
avoids relocation error when klp text and data are too far apart
kpatch does not patch vdso code and hence the
mno-pic-data-is-text-relative flag is not essential.
Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The .align directive has inconsistent behavior across architectures. Use
.balign instead everywhere. This is a no-op for s390, but with this there
is no mix in using .align and .balign anymore.
Future code is supposed to use only .balign.
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Nathan Chancellor reported a kernel build error on Fedora 39:
$ clang --version | head -1
clang version 16.0.5 (Fedora 16.0.5-1.fc39)
$ s390x-linux-gnu-ld --version | head -1
GNU ld version 2.40-1.fc39
$ make -skj"$(nproc)" ARCH=s390 CC=clang CROSS_COMPILE=s390x-linux-gnu- olddefconfig all
s390x-linux-gnu-ld: arch/s390/boot/startup.o(.text+0x5b4): misaligned symbol `_decompressor_end' (0x35b0f) for relocation R_390_PC32DBL
make[3]: *** [.../arch/s390/boot/Makefile:78: arch/s390/boot/vmlinux] Error 1
It turned out that the problem with misaligned symbols on s390 was fixed
with commit 80ddf5ce1c ("s390: always build relocatable kernel") for the
kernel image, but did not take into account that the decompressor uses its
own set of CFLAGS, which come without -fPIE.
Add the -fPIE flag also to the decompresser CFLAGS to fix this.
Reported-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reported-by: CKI <cki-project@redhat.com>
Suggested-by: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1747
Link: https://lore.kernel.org/32935.123062114500601371@us-mta-9.us.mimecast.lan/
Link: https://lore.kernel.org/r/20230622125508.1068457-1-hca@linux.ibm.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
zcrypt_unlocked_ioctl() allocates 256k with kzalloc() which is likely to
fail if memory is fragmented. To avoid that use kvmalloc_array() instead,
like it is done at several other places for the same reason.
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
When adding an undefined symbol the build still succeeds, but
userspace is crashing trying to execute vdso because the
undefined symbol is not resolved. Add the check for undefined
symbols to prevent this.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Fix virtual vs physical address confusion (which currently are the same).
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
VMEM_MAX_PHYS is supposed to be the highest physical
address that can be added to the identity mapping.
It should match ident_map_size, which has the same
meaning. However, unlike ident_map_size it is not
adjusted against various limiting factors (see the
comment to setup_ident_map_size() function). That
renders all checks against VMEM_MAX_PHYS invalid.
Further, VMEM_MAX_PHYS is currently set to vmemmap,
which is an address in virtual memory space. However,
it gets compared against physical addresses in various
locations. That works, because both address spaces
are the same on s390, but otherwise it is wrong.
Instead of fixing VMEM_MAX_PHYS misuse and semantics
just remove it.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
- Fix the style of protected key API driver source: use
x-mas tree for all local variable declarations.
- Rework protected key API driver to not use the struct
pkey_protkey and pkey_clrkey anymore. Both structures
have a fixed size buffer, but with the support of ECC
protected key these buffers are not big enough. Use
dynamic buffers internally and transparently for
userspace.
- Add support for a new 'non CCA clear key token' with
ECC clear keys supported: ECC P256, ECC P384, ECC P521,
ECC ED25519 and ECC ED448. This makes it possible to
derive a protected key from the ECC clear key input via
PKEY_KBLOB2PROTK3 ioctl, while currently the only way
to derive is via PCKMO instruction.
- The s390 PMU of PAI crypto and extension 1 NNPA counters
use atomic_t for reference counting. Replace this with
the proper data type refcount_t.
- Select ARCH_SUPPORTS_INT128, but limit this to clang for
now, since gcc generates inefficient code, which may lead
to stack overflows.
- Replace one-element array with flexible-array member in
struct vfio_ccw_parent and refactor the rest of the code
accordingly. Also, prefer struct_size() over sizeof() open-
coded versions.
- Introduce OS_INFO_FLAGS_ENTRY pointing to a flags field and
OS_INFO_FLAG_REIPL_CLEAR flag that informs a dumper whether
the system memory should be cleared or not once dumped.
- Fix a hang when a user attempts to remove a VFIO-AP mediated
device attached to a guest: add VFIO_DEVICE_GET_IRQ_INFO and
VFIO_DEVICE_SET_IRQS IOCTLs and wire up the VFIO bus driver
callback to request a release of the device.
- Fix calculation for R_390_GOTENT relocations for modules.
- Allow any user space process with CAP_PERFMON capability
read and display the CPU Measurement facility counter sets.
- Rework large statically-defined per-CPU cpu_cf_events data
structure and replace it with dynamically allocated structures
created when a perf_event_open() system call is invoked or
/dev/hwctr device is accessed.
-----BEGIN PGP SIGNATURE-----
iI0EABYIADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCZJsnCRccYWdvcmRlZXZA
bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8D+RAQCN5CYdql/X8kOMcs4jJvDHEZf8
5CHYfmT2SLNs+zWtLgD/f/C9XXv3El/0wMBvuWSZ+T1nw+imt2cz+FJ+Nor+UQg=
=R7Dm
-----END PGP SIGNATURE-----
Merge tag 's390-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Alexander Gordeev:
- Fix the style of protected key API driver source: use x-mas tree for
all local variable declarations
- Rework protected key API driver to not use the struct pkey_protkey
and pkey_clrkey anymore. Both structures have a fixed size buffer,
but with the support of ECC protected key these buffers are not big
enough. Use dynamic buffers internally and transparently for
userspace
- Add support for a new 'non CCA clear key token' with ECC clear keys
supported: ECC P256, ECC P384, ECC P521, ECC ED25519 and ECC ED448.
This makes it possible to derive a protected key from the ECC clear
key input via PKEY_KBLOB2PROTK3 ioctl, while currently the only way
to derive is via PCKMO instruction
- The s390 PMU of PAI crypto and extension 1 NNPA counters use atomic_t
for reference counting. Replace this with the proper data type
refcount_t
- Select ARCH_SUPPORTS_INT128, but limit this to clang for now, since
gcc generates inefficient code, which may lead to stack overflows
- Replace one-element array with flexible-array member in struct
vfio_ccw_parent and refactor the rest of the code accordingly. Also,
prefer struct_size() over sizeof() open- coded versions
- Introduce OS_INFO_FLAGS_ENTRY pointing to a flags field and
OS_INFO_FLAG_REIPL_CLEAR flag that informs a dumper whether the
system memory should be cleared or not once dumped
- Fix a hang when a user attempts to remove a VFIO-AP mediated device
attached to a guest: add VFIO_DEVICE_GET_IRQ_INFO and
VFIO_DEVICE_SET_IRQS IOCTLs and wire up the VFIO bus driver callback
to request a release of the device
- Fix calculation for R_390_GOTENT relocations for modules
- Allow any user space process with CAP_PERFMON capability read and
display the CPU Measurement facility counter sets
- Rework large statically-defined per-CPU cpu_cf_events data structure
and replace it with dynamically allocated structures created when a
perf_event_open() system call is invoked or /dev/hwctr device is
accessed
* tag 's390-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/cpum_cf: rework PER_CPU_DEFINE of struct cpu_cf_events
s390/cpum_cf: open access to hwctr device for CAP_PERFMON privileged process
s390/module: fix rela calculation for R_390_GOTENT
s390/vfio-ap: wire in the vfio_device_ops request callback
s390/vfio-ap: realize the VFIO_DEVICE_SET_IRQS ioctl
s390/vfio-ap: realize the VFIO_DEVICE_GET_IRQ_INFO ioctl
s390/pkey: add support for ecc clear key
s390/pkey: do not use struct pkey_protkey
s390/pkey: introduce reverse x-mas trees
s390/zcore: conditionally clear memory on reipl
s390/ipl: add REIPL_CLEAR flag to os_info
vfio/ccw: use struct_size() helper
vfio/ccw: replace one-element array with flexible-array member
s390: select ARCH_SUPPORTS_INT128
s390/pai_ext: replace atomic_t with refcount_t
s390/pai_crypto: replace atomic_t with refcount_t
- clean up platform_* interface of the xtensa architecture
- enable HAVE_ASM_MODVERSIONS
- drop ARCH_WANT_FRAME_POINTERS
- clean up unaligned access exception handler
- provide handler for load/store exceptions
- various small fixes and cleanups
-----BEGIN PGP SIGNATURE-----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=ws6a
-----END PGP SIGNATURE-----
Merge tag 'xtensa-20230627' of https://github.com/jcmvbkbc/linux-xtensa
Pull xtensa updates from Max Filippov:
- clean up platform_* interface of the xtensa architecture
- enable HAVE_ASM_MODVERSIONS
- drop ARCH_WANT_FRAME_POINTERS
- clean up unaligned access exception handler
- provide handler for load/store exceptions
- various small fixes and cleanups
* tag 'xtensa-20230627' of https://github.com/jcmvbkbc/linux-xtensa:
xtensa: dump userspace code around the exception PC
xtensa: rearrange show_stack output
xtensa: add load/store exception handler
xtensa: rearrange unaligned exception handler
xtensa: always install slow handler for unaligned access exception
xtensa: move early_trap_init from kasan_early_init to init_arch
xtensa: drop ARCH_WANT_FRAME_POINTERS
xtensa: report trax and perf counters in cpuinfo
xtensa: add asm-prototypes.h
xtensa: only build __strncpy_user with CONFIG_ARCH_HAS_STRNCPY_FROM_USER
xtensa: drop bcopy implementation
xtensa: drop EXPORT_SYMBOL for common_exception_return
xtensa: boot-redboot: clean up Makefile
xtensa: clean up default platform functions
xtensa: drop platform_halt and platform_power_off
xtensa: drop platform_restart
xtensa: drop platform_heartbeat
xtensa: xt2000: drop empty platform_init
This reverts commit 6ebe94baa2.
The patch "nios2: Convert __pte_free_tlb() to use ptdescs" was supposed
to go together with a patchset that Vishal Moola had planned taking it
through the mm tree. By just having this patch, all NIOS2 builds are
broken.
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Build footprint & performance improvements:
- Reduce memory usage with CONFIG_DEBUG_INFO=y
In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel, DWARF
creates almost 200 million relocations, ballooning objtool's peak heap
usage to 53GB. These patches reduce that to 25GB.
On a distro-type kernel with kernel IBT enabled, they reduce objtool's
peak heap usage from 4.2GB to 2.8GB.
These changes also improve the runtime significantly.
- Debuggability improvements:
- Add the unwind_debug command-line option, for more extend unwinding
debugging output.
- Limit unreachable warnings to once per function
- Add verbose option for disassembling affected functions
- Include backtrace in verbose mode
- Detect missing __noreturn annotations
- Ignore exc_double_fault() __noreturn warnings
- Remove superfluous global_noreturns entries
- Move noreturn function list to separate file
- Add __kunit_abort() to noreturns
- Unwinder improvements:
- Allow stack operations in UNWIND_HINT_UNDEFINED regions
- drm/vmwgfx: Add unwind hints around RBP clobber
- Cleanups:
- Move the x86 entry thunk restore code into thunk functions
- x86/unwind/orc: Use swap() instead of open coding it
- Remove unnecessary/unused variables
- Fixes for modern stack canary handling
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=uNnc
-----END PGP SIGNATURE-----
Merge tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molar:
"Build footprint & performance improvements:
- Reduce memory usage with CONFIG_DEBUG_INFO=y
In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel,
DWARF creates almost 200 million relocations, ballooning objtool's
peak heap usage to 53GB. These patches reduce that to 25GB.
On a distro-type kernel with kernel IBT enabled, they reduce
objtool's peak heap usage from 4.2GB to 2.8GB.
These changes also improve the runtime significantly.
Debuggability improvements:
- Add the unwind_debug command-line option, for more extend unwinding
debugging output
- Limit unreachable warnings to once per function
- Add verbose option for disassembling affected functions
- Include backtrace in verbose mode
- Detect missing __noreturn annotations
- Ignore exc_double_fault() __noreturn warnings
- Remove superfluous global_noreturns entries
- Move noreturn function list to separate file
- Add __kunit_abort() to noreturns
Unwinder improvements:
- Allow stack operations in UNWIND_HINT_UNDEFINED regions
- drm/vmwgfx: Add unwind hints around RBP clobber
Cleanups:
- Move the x86 entry thunk restore code into thunk functions
- x86/unwind/orc: Use swap() instead of open coding it
- Remove unnecessary/unused variables
Fixes for modern stack canary handling"
* tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
x86/orc: Make the is_callthunk() definition depend on CONFIG_BPF_JIT=y
objtool: Skip reading DWARF section data
objtool: Free insns when done
objtool: Get rid of reloc->rel[a]
objtool: Shrink elf hash nodes
objtool: Shrink reloc->sym_reloc_entry
objtool: Get rid of reloc->jump_table_start
objtool: Get rid of reloc->addend
objtool: Get rid of reloc->type
objtool: Get rid of reloc->offset
objtool: Get rid of reloc->idx
objtool: Get rid of reloc->list
objtool: Allocate relocs in advance for new rela sections
objtool: Add for_each_reloc()
objtool: Don't free memory in elf_close()
objtool: Keep GElf_Rel[a] structs synced
objtool: Add elf_create_section_pair()
objtool: Add mark_sec_changed()
objtool: Fix reloc_hash size
objtool: Consolidate rel/rela handling
...
- Rework & fix the event forwarding logic by extending the
core interface. This fixes AMD PMU events that have to
be forwarded from the core PMU to the IBS PMU.
- Add self-tests to test AMD IBS invocation via core PMU events
- Clean up Intel FixCntrCtl MSR encoding & handling
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=xn05
-----END PGP SIGNATURE-----
Merge tag 'perf-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events updates from Ingo Molnar:
- Rework & fix the event forwarding logic by extending the core
interface.
This fixes AMD PMU events that have to be forwarded from the
core PMU to the IBS PMU.
- Add self-tests to test AMD IBS invocation via core PMU events
- Clean up Intel FixCntrCtl MSR encoding & handling
* tag 'perf-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Re-instate the linear PMU search
perf/x86/intel: Define bit macros for FixCntrCtl MSR
perf test: Add selftest to test IBS invocation via core pmu events
perf/core: Remove pmu linear searching code
perf/ibs: Fix interface via core pmu events
perf/core: Rework forwarding of {task|cpu}-clock events
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double().
The cmpxchg128() family of functions is basically & functionally
the same as cmpxchg_double(), but with a saner interface: instead
of a 6-parameter horror that forced u128 - u64/u64-halves layout
details on the interface and exposed users to complexity,
fragility & bugs, use a natural 3-parameter interface with u128 types.
- Restructure the generated atomic headers, and add
kerneldoc comments for all of the generic atomic{,64,_long}_t
operations. Generated definitions are much cleaner now,
and come with documentation.
- Implement lock_set_cmp_fn() on lockdep, for defining an ordering
when taking multiple locks of the same type. This gets rid of
one use of lockdep_set_novalidate_class() in the bcache code.
- Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended
variable shadowing generating garbage code on Clang on certain
ARM builds.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----
iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmSav3wRHG1pbmdvQGtl
cm5lbC5vcmcACgkQEnMQ0APhK1gDyxAAjCHQjpolrre7fRpyiTDwqzIKT27H04vQ
zrQVlVc42WBnn9pe8LthGy43/RvYvqlZvLoLONA4fMkuYriM6nSMsoZjeUmE+6Rs
QAElQC74P5YvEBOa67VNY3/M7sj22ftDe7ODtVV8OrnPjMk1sQNRvaK025Cs3yig
8MAI//hHGNmyVAp1dPYZMJNqxGCvluReLZ4SaUJFCMrg7YgUXgCBj/5Gi07TlKxn
sT8BFCssoEW/B9FXkh59B1t6FBCZoSy4XSZfsZe0uVAUJ4XDEOO+zBgaWFCedNQT
wP323ryBgMrkzUKA8j2/o5d3QnMA1GcBfHNNlvAl/fOfrxWXzDZnOEY26YcaLMa0
YIuRF/JNbPZlt6DCUVBUEvMPpfNYi18dFN0rat1a6xL2L4w+tm55y3mFtSsg76Ka
r7L2nWlRrAGXnuA+VEPqkqbSWRUSWOv5hT2Mcyb5BqqZRsxBETn6G8GVAzIO6j6v
giyfUdA8Z9wmMZ7NtB6usxe3p1lXtnZ/shCE7ZHXm6xstyZrSXaHgOSgAnB9DcuJ
7KpGIhhSODQSwC/h/J0KEpb9Pr/5jCWmXAQ2DWnZK6ndt1jUfFi8pfK58wm0AuAM
o9t8Mx3o8wZjbMdt6up9OIM1HyFiMx2BSaZK+8f/bWemHQ0xwez5g4k5O5AwVOaC
x9Nt+Tp0Ze4=
=DsYj
-----END PGP SIGNATURE-----
Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()
The cmpxchg128() family of functions is basically & functionally the
same as cmpxchg_double(), but with a saner interface.
Instead of a 6-parameter horror that forced u128 - u64/u64-halves
layout details on the interface and exposed users to complexity,
fragility & bugs, use a natural 3-parameter interface with u128
types.
- Restructure the generated atomic headers, and add kerneldoc comments
for all of the generic atomic{,64,_long}_t operations.
The generated definitions are much cleaner now, and come with
documentation.
- Implement lock_set_cmp_fn() on lockdep, for defining an ordering when
taking multiple locks of the same type.
This gets rid of one use of lockdep_set_novalidate_class() in the
bcache code.
- Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended variable
shadowing generating garbage code on Clang on certain ARM builds.
* tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
locking/atomic: scripts: fix ${atomic}_dec_if_positive() kerneldoc
percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg()
locking/atomic: treewide: delete arch_atomic_*() kerneldoc
locking/atomic: docs: Add atomic operations to the driver basic API documentation
locking/atomic: scripts: generate kerneldoc comments
docs: scripts: kernel-doc: accept bitwise negation like ~@var
locking/atomic: scripts: simplify raw_atomic*() definitions
locking/atomic: scripts: simplify raw_atomic_long*() definitions
locking/atomic: scripts: split pfx/name/sfx/order
locking/atomic: scripts: restructure fallback ifdeffery
locking/atomic: scripts: build raw_atomic_long*() directly
locking/atomic: treewide: use raw_atomic*_<op>()
locking/atomic: scripts: add trivial raw_atomic*_<op>()
locking/atomic: scripts: factor out order template generation
locking/atomic: scripts: remove leftover "${mult}"
locking/atomic: scripts: remove bogus order parameter
locking/atomic: xtensa: add preprocessor symbols
locking/atomic: x86: add preprocessor symbols
locking/atomic: sparc: add preprocessor symbols
locking/atomic: sh: add preprocessor symbols
...
- Scheduler SMP load-balancer improvements:
- Avoid unnecessary migrations within SMT domains on hybrid systems.
Problem:
On hybrid CPU systems, (processors with a mixture of higher-frequency
SMT cores and lower-frequency non-SMT cores), under the old code
lower-priority CPUs pulled tasks from the higher-priority cores if
more than one SMT sibling was busy - resulting in many unnecessary
task migrations.
Solution:
The new code improves the load balancer to recognize SMT cores with more
than one busy sibling and allows lower-priority CPUs to pull tasks, which
avoids superfluous migrations and lets lower-priority cores inspect all SMT
siblings for the busiest queue.
- Implement the 'runnable boosting' feature in the EAS balancer: consider CPU
contention in frequency, EAS max util & load-balance busiest CPU selection.
This improves CPU utilization for certain workloads, while leaves other key
workloads unchanged.
- Scheduler infrastructure improvements:
- Rewrite the scheduler topology setup code by consolidating it
into the build_sched_topology() helper function and building
it dynamically on the fly.
- Resolve the local_clock() vs. noinstr complications by rewriting
the code: provide separate sched_clock_noinstr() and
local_clock_noinstr() functions to be used in instrumentation code,
and make sure it is all instrumentation-safe.
- Fixes:
- Fix a kthread_park() race with wait_woken()
- Fix misc wait_task_inactive() bugs unearthed by the -rt merge:
- Fix UP PREEMPT bug by unifying the SMP and UP implementations.
- Fix task_struct::saved_state handling.
- Fix various rq clock update bugs, unearthed by turning on the rq clock
debugging code.
- Fix the PSI WINDOW_MIN_US trigger limit, which was easy to trigger by
creating enough cgroups, by removing the warnign and restricting
window size triggers to PSI file write-permission or CAP_SYS_RESOURCE.
- Propagate SMT flags in the topology when removing degenerate domain
- Fix grub_reclaim() calculation bug in the deadline scheduler code
- Avoid resetting the min update period when it is unnecessary, in
psi_trigger_destroy().
- Don't balance a task to its current running CPU in load_balance(),
which was possible on certain NUMA topologies with overlapping
groups.
- Fix the sched-debug printing of rq->nr_uninterruptible
- Cleanups:
- Address various -Wmissing-prototype warnings, as a preparation
to (maybe) enable this warning in the future.
- Remove unused code
- Mark more functions __init
- Fix shadow-variable warnings
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=EWQA
-----END PGP SIGNATURE-----
Merge tag 'sched-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Scheduler SMP load-balancer improvements:
- Avoid unnecessary migrations within SMT domains on hybrid systems.
Problem:
On hybrid CPU systems, (processors with a mixture of
higher-frequency SMT cores and lower-frequency non-SMT cores),
under the old code lower-priority CPUs pulled tasks from the
higher-priority cores if more than one SMT sibling was busy -
resulting in many unnecessary task migrations.
Solution:
The new code improves the load balancer to recognize SMT cores
with more than one busy sibling and allows lower-priority CPUs
to pull tasks, which avoids superfluous migrations and lets
lower-priority cores inspect all SMT siblings for the busiest
queue.
- Implement the 'runnable boosting' feature in the EAS balancer:
consider CPU contention in frequency, EAS max util & load-balance
busiest CPU selection.
This improves CPU utilization for certain workloads, while leaves
other key workloads unchanged.
Scheduler infrastructure improvements:
- Rewrite the scheduler topology setup code by consolidating it into
the build_sched_topology() helper function and building it
dynamically on the fly.
- Resolve the local_clock() vs. noinstr complications by rewriting
the code: provide separate sched_clock_noinstr() and
local_clock_noinstr() functions to be used in instrumentation code,
and make sure it is all instrumentation-safe.
Fixes:
- Fix a kthread_park() race with wait_woken()
- Fix misc wait_task_inactive() bugs unearthed by the -rt merge:
- Fix UP PREEMPT bug by unifying the SMP and UP implementations
- Fix task_struct::saved_state handling
- Fix various rq clock update bugs, unearthed by turning on the rq
clock debugging code.
- Fix the PSI WINDOW_MIN_US trigger limit, which was easy to trigger
by creating enough cgroups, by removing the warnign and restricting
window size triggers to PSI file write-permission or
CAP_SYS_RESOURCE.
- Propagate SMT flags in the topology when removing degenerate domain
- Fix grub_reclaim() calculation bug in the deadline scheduler code
- Avoid resetting the min update period when it is unnecessary, in
psi_trigger_destroy().
- Don't balance a task to its current running CPU in load_balance(),
which was possible on certain NUMA topologies with overlapping
groups.
- Fix the sched-debug printing of rq->nr_uninterruptible
Cleanups:
- Address various -Wmissing-prototype warnings, as a preparation to
(maybe) enable this warning in the future.
- Remove unused code
- Mark more functions __init
- Fix shadow-variable warnings"
* tag 'sched-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
sched/core: Avoid multiple calling update_rq_clock() in __cfsb_csd_unthrottle()
sched/core: Avoid double calling update_rq_clock() in __balance_push_cpu_stop()
sched/core: Fixed missing rq clock update before calling set_rq_offline()
sched/deadline: Update GRUB description in the documentation
sched/deadline: Fix bandwidth reclaim equation in GRUB
sched/wait: Fix a kthread_park race with wait_woken()
sched/topology: Mark set_sched_topology() __init
sched/fair: Rename variable cpu_util eff_util
arm64/arch_timer: Fix MMIO byteswap
sched/fair, cpufreq: Introduce 'runnable boosting'
sched/fair: Refactor CPU utilization functions
cpuidle: Use local_clock_noinstr()
sched/clock: Provide local_clock_noinstr()
x86/tsc: Provide sched_clock_noinstr()
clocksource: hyper-v: Provide noinstr sched_clock()
clocksource: hyper-v: Adjust hv_read_tsc_page_tsc() to avoid special casing U64_MAX
x86/vdso: Fix gettimeofday masking
math64: Always inline u128 version of mul_u64_u64_shr()
s390/time: Provide sched_clock_noinstr()
loongarch: Provide noinstr sched_clock_read()
...
used in
-----BEGIN PGP SIGNATURE-----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=haGW
-----END PGP SIGNATURE-----
Merge tag 'x86_sgx_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SGX update from Borislav Petkov:
- A fix to avoid using a list iterator variable after the loop it is
used in
* tag 'x86_sgx_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx: Avoid using iterator after loop in sgx_mmu_notifier_release()
the usage patterns are becoming apparent
-----BEGIN PGP SIGNATURE-----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=Aj6p
-----END PGP SIGNATURE-----
Merge tag 'x86_sev_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- Some SEV and CC platform helpers cleanup and simplifications now that
the usage patterns are becoming apparent
[ I'm sure I'm the only one that has gets confused by all the TLAs, but
in case there are others: here SEV is AMD's "Secure Encrypted
Virtualization" and CC is generic "Confidential Computing".
There's also Intel SGX (Software Guard Extensions) and TDX (Trust
Domain Extensions), along with all the vendor memory encryption
extensions (SME, TSME, TME, and WTF).
And then we have arm64 with RMA and CCA, and I probably forgot another
dozen or so related acronyms - Linus ]
* tag 'x86_sev_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/coco: Get rid of accessor functions
x86/sev: Get rid of special sev_es_enable_key
x86/coco: Mark cc_platform_has() and descendants noinstr
mechanism in order to look up the memory type of a region easily. Also
address memory range lookup issues like returning an invalid memory
type. Furthermore, this handles the decoupling of PAT from MTRR more
naturally. All work by Juergen Gross
-----BEGIN PGP SIGNATURE-----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=Dmx5
-----END PGP SIGNATURE-----
Merge tag 'x86_mtrr_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mtrr updates from Borislav Petkov:
"A serious scrubbing of the MTRR code including adding a new map
mechanism in order to look up the memory type of a region easily.
Also address memory range lookup issues like returning an invalid
memory type. Furthermore, this handles the decoupling of PAT from MTRR
more naturally.
All work by Juergen Gross"
* tag 'x86_mtrr_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/xen: Set default memory type for PV guests to WB
x86/mtrr: Unify debugging printing
x86/mtrr: Remove unused code
x86/mm: Only check uniform after calling mtrr_type_lookup()
x86/mtrr: Don't let mtrr_type_lookup() return MTRR_TYPE_INVALID
x86/mtrr: Use new cache_map in mtrr_type_lookup()
x86/mtrr: Add mtrr=debug command line option
x86/mtrr: Construct a memory map with cache modes
x86/mtrr: Add get_effective_type() service function
x86/mtrr: Allocate mtrr_value array dynamically
x86/mtrr: Move 32-bit code from mtrr.c to legacy.c
x86/mtrr: Have only one set_mtrr() variant
x86/mtrr: Replace vendor tests in MTRR code
x86/xen: Set MTRR state when running as Xen PV initial domain
x86/hyperv: Set MTRR state when running as SEV-SNP Hyper-V guest
x86/mtrr: Support setting MTRR state for software defined MTRRs
x86/mtrr: Replace size_or_mask and size_and_mask with a much easier concept
x86/mtrr: Remove physical address size calculation
handling symbols so that tools do not get confused by the presence of
code belonging to the wrong symbol/not belonging to any symbol
- Improve csum_partial()'s performance
- Some improvements to the kcpuid tool
-----BEGIN PGP SIGNATURE-----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=6U2J
-----END PGP SIGNATURE-----
Merge tag 'x86_misc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Borislav Petkov:
- Remove the local symbols prefix of the get/put_user() exception
handling symbols so that tools do not get confused by the presence of
code belonging to the wrong symbol/not belonging to any symbol
- Improve csum_partial()'s performance
- Some improvements to the kcpuid tool
* tag 'x86_misc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/lib: Make get/put_user() exception handling a visible symbol
x86/csum: Fix clang -Wuninitialized in csum_partial()
x86/csum: Improve performance of `csum_partial`
tools/x86/kcpuid: Add .gitignore
tools/x86/kcpuid: Dump the correct CPUID function in error
the early loading procedure
- Cleanups
-----BEGIN PGP SIGNATURE-----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=2i55
-----END PGP SIGNATURE-----
Merge tag 'x86_microcode_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loader updates from Borislav Petkov:
- Load late on both SMT threads on AMD, just like it is being done in
the early loading procedure
- Cleanups
* tag 'x86_microcode_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/AMD: Load late on both threads too
x86/microcode/amd: Remove unneeded pointer arithmetic
x86/microcode/AMD: Get rid of __find_equiv_id()
brings some order to the documentation directory, declutters the top-level
directory, and makes the documentation organization more closely match that
of the source.
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmSbDRwPHGNvcmJldEBs
d24ubmV0AAoJEBdDWhNsDH5Y0b0H/A69Yxns1Bf465rNNINREaWWzJzIPGyJax9F
7x2zYphL2BLmDysHDvBpP858ytA4qzmqS7TopI1zjqTS6Uh4qTfsQTWNfk536Oyi
XOkKONPAqzuk4Pvsam4t46lMb5xqkyy7FcsZSp25ona7t8nLiTkoxTWIabvFziFN
F7qJ/u/Uzck53FgR2Xtss4vrkcWDTgva5SzQUhoxGfEqjEOoQi7CfqLQC468wfOt
/XlBCnTRPnZ6bFiD/9QHU+D0setWVBs0IJHH2ogDlx/FHOvp83haJHVRFNYpx0Gd
UY72gEbovzYauKMaa6azBo+1Tje6tTu6wfV3ZAG8UJYe/vJkdUw=
=EBMZ
-----END PGP SIGNATURE-----
Merge tag 'docs-arm-move' of git://git.lwn.net/linux
Pull arm documentation move from Jonathan Corbet:
"Move the Arm architecture documentation under Documentation/arch/.
This brings some order to the documentation directory, declutters the
top-level directory, and makes the documentation organization more
closely match that of the source"
* tag 'docs-arm-move' of git://git.lwn.net/linux:
dt-bindings: Update Documentation/arm references
docs: update some straggling Documentation/arm references
crypto: update some Arm documentation references
mips: update a reference to a moved Arm Document
arm64: Update Documentation/arm references
arm: update in-source documentation references
arm: docs: Move Arm documentation to Documentation/arch/
- Some initial page-table documentation from Linus (the other Linus)
- Regression-handling documentation improvements from Thorsten
- Addition of kerneldoc documentation for the ERR_PTR() and related
macros from James Seo
...and the usual collection of fixes and updates.
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmSbC9wPHGNvcmJldEBs
d24ubmV0AAoJEBdDWhNsDH5Yw7YH/Rcd2oVQ/B8ui9TYcXTQid0ly5GvLl/ot0zf
pml725bZSKodcdtmLvQ6CzMGRdzxhQpVfzy21zHAlQWiBMdheWeu0Etmpspn8fCI
wnJIlUbGdp5Aq4ZtoJPTtE3vXvWEQ32gVytGjbTVNtSLRLXQ1bc+A/IvmRj3jdkV
dwPfN7hPLVhBt5770pHMywlFVBQ9FUjUNC+uX0JkcNZJ3598c4ZzndBEaLdqfPHC
DtWucRdnHubTncKECgYbspsfH6zuntFk8FgsD1gZ1K9izMAwVBsKSS+MeOz8oxx8
rPq4Tscqs/9mpist/PqxEu0fvTC3xsyMbxLA4hAORmgpdnbWIaQ=
=q2B4
-----END PGP SIGNATURE-----
Merge tag 'docs-6.5' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It's been a relatively calm cycle in docsland. We do have:
- Some initial page-table documentation from Linus (the other Linus)
- Regression-handling documentation improvements from Thorsten
- Addition of kerneldoc documentation for the ERR_PTR() and related
macros from James Seo
... and the usual collection of fixes and updates"
* tag 'docs-6.5' of git://git.lwn.net/linux:
docs: consolidate storage interfaces
Documentation: update git configuration for Link: tag
Documentation: KVM: make corrections to vcpu-requests.rst
Documentation: KVM: make corrections to ppc-pv.rst
Documentation: KVM: make corrections to locking.rst
Documentation: KVM: make corrections to halt-polling.rst
Documentation: virt: correct location of haltpoll module params
Documentation/mm: Initial page table documentation
docs: crypto: async-tx-api: fix typo in struct name
docs/doc-guide: Clarify how to write tables
docs: handling-regressions: rework section about fixing procedures
docs: process: fix a typoed cross-reference
docs: submitting-patches: Discuss interleaved replies
MAINTAINERS: direct process doc changes to a dedicated ML
Documentation: core-api: Add error pointer functions to kernel-api
err.h: Add missing kerneldocs for error pointer functions
Documentation: conf.py: Add __force to c_id_attributes
docs: clarify KVM related kernel parameters' descriptions
docs: consolidate human interface subsystems
docs: admin-guide: Add information about intel_pstate active mode
This kselftest update for Linux 6.5-rc1 consists of:
- change to allow runners to override the timeout
This change is made to avoid future increases of long
timeouts
- several other spelling and cleanups
- a new subtest to video_device_test
- enhancements to test coverage in clone3 test
- other fixes to ftrace and cpufreq tests
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmSYXtgACgkQCwJExA0N
QxxFnhAAwoYLMi2PN6G7Cs4J8jqmckluD0tpKhMAIoZFckgvlUoPJgEtDrB1X+KJ
JF8DzBJ/VrezxfrsKcFO6jW26BgVmn++miIuwbcjY0YzL1JuRfJweE8znjADSD4c
hI2EI8Nw1FdMiSCJANblbgPTQz2zmdH68+CifrQcKgiq4+2ETELuOSA0JnTsTUm3
wxkyoubElpgqKFyYKuUyPLO8llqJInnPLFOdrtCQNGtLcPC11Gmrhqg3c46zhAsA
lbsIezUebPe8RLflmn6WZf+1Y8p+PkXW+lbrkw0HEEhFCWQ7uNI5OcvivdY4kLXA
glt73LlASnWkqf/59rkMGUUP2LkI/Ys7oEN4XNuq0XvvYoF30ZcpvrInzVCET3qd
Z4SMBzdC5YHlCSpszAQYumCpu+7tAQd/LlB0Pk5YjHHt4c0wC+PABkzgP+3+4alz
hvSQGInsfBGzjP3nOV0qDEpMlL/0cAJzfsiNHvW+RJu8jSIJHpIq9BwRefSnAmke
tD3ZWxW8bAFvELvF5jMhdIApbw3cCZNcb6end/RLOmqcALDYXf+64FIrC3pqxQoH
CJXn7fZD9kmwxZLg6LQiN6caBc70RZbhOv5fBZ2E/h4cj2EN4gFMV6rLs3/xXLal
MvvOydEIPRPIYlqJgdosUYv5LO29+IKTo1hRQjkTCZRqj1ybSpI=
=BQ+u
-----END PGP SIGNATURE-----
Merge tag 'linux-kselftest-next-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
- allow runners to override the timeout
This change is made to avoid future increases of long timeouts
- several other spelling and cleanups
- a new subtest to video_device_test
- enhancements to test coverage in clone3 test
- other fixes to ftrace and cpufreq tests
* tag 'linux-kselftest-next-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/ftace: Fix KTAP output ordering
selftests/cpufreq: Don't enable generic lock debugging options
kselftests: Sort the collections list to avoid duplicate tests
selftest: pidfd: Omit long and repeating outputs
selftests: allow runners to override the timeout
selftests/ftrace: Add new test case which checks for optimized probes
selftests/clone3: test clone3 with exit signal in flags
kselftest: vDSO: Fix accumulation of uninitialized ret when CLOCK_REALTIME is undefined
selftests: prctl: Fix spelling mistake "anonynous" -> "anonymous"
selftests: media_tests: Add new subtest to video_device_test
This KUnit update for Linux 6.5-rc1 consists of:
- kunit_add_action() API to defer a call until test exit.
- Update document to add kunit_add_action() usage notes.
- Changes to always run cleanup from a test kthread.
- Documentation updates to clarify cleanup usage
- assertions should not be used in cleanup
- Documentation update to clearly indicate that exit
functions should run even if init fails
- Several fixes and enhancements to existing tests.
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmSYWVcACgkQCwJExA0N
QxwbxA//eGx3xkFN9CWb8ryBTZhs8DZrzc+JlqWEDpk7GQTSlErd3DtInzY0jM2a
GWKV4BJCX6uI2JiyG+cof7nWtnv//L4LxRCpYlY/n7sJeYwZyd1s745nM8lfYTh9
UtAHPmZplAqMCOHgfeUQ6wMxiUc7VGC8Spu82nFzRuSLzf+q5BpK7LPHSJiJ4ea+
kkM+5ygHzBW2cfvULIglb8jQPgPRoVR4RhmmHMF7CYTZQkrU/z7ZZlFTx7LowrxC
p2zWVuH0KJONn4L8rB4QI8oqCZejU2qV2bealCnKY3/atSLUvrnYxyPQbbxCNqmi
EY1XyQFbGsvmgy77IeEXKWhiUmAfD7/Hcvh8M/vLk2wHzQG8+428DAQ7sGRHHqZX
6DvDUo8Z2TE7585glxkbiXhuGsY0y8dkeNURw4URys+TvucNHGrmDfKp0UIEAJW1
iqopMGmM/MDfV5gPUlUEg6jKhTkZOn6OlVwZ8moUaAeAKV7qGGuMrNSZJ6Jw1Gc9
LjI2ma3uZ3hOahyqwU+zwO4CeTJHOq6JjXJZt9aiGwqJPrbjvVCUtikz4QSptU2z
vCjVEV/e7tTGXl+suDb48cu/pyh+z3t5/Gz7eOHMId7S3MENTauxyBXDm1WzoV0c
HuBEsmWXetYuXXkh66LJ/8fzUeWvaGrQPM9hXi2fn1hmPLxOnxw=
=rYT5
-----END PGP SIGNATURE-----
Merge tag 'linux-kselftest-kunit-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit updates from Shuah Khan:
- kunit_add_action() API to defer a call until test exit
- Update document to add kunit_add_action() usage notes
- Changes to always run cleanup from a test kthread
- Documentation updates to clarify cleanup usage (assertions should not
be used in cleanup)
- Documentation update to clearly indicate that exit functions should
run even if init fails
- Several fixes and enhancements to existing tests
* tag 'linux-kselftest-kunit-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
MAINTAINERS: Add source tree entry for kunit
Documentation: kunit: Rename references to kunit_abort()
kunit: Move kunit_abort() call out of kunit_do_failed_assertion()
kunit: Fix obsolete name in documentation headers (func->action)
Documentation: Kunit: add MODULE_LICENSE to sample code
kunit: Update kunit_print_ok_not_ok function
kunit: Fix reporting of the skipped parameterized tests
kunit/test: Add example test showing parameterized testing
Documentation: kunit: Add usage notes for kunit_add_action()
kunit: kmalloc_array: Use kunit_add_action()
kunit: executor_test: Use kunit_add_action()
kunit: Add kunit_add_action() to defer a call until test exit
kunit: example: Provide example exit functions
Documentation: kunit: Warn that exit functions run even if init fails
Documentation: kunit: Note that assertions should not be used in cleanup
kunit: Always run cleanup from a test kthread
Documentation: kunit: Modular tests should not depend on KUNIT=y
kunit: tool: undo type subscripts for subprocess.Popen
o Add stackprotector support.
o Fix RISC-V load-store instruction syntax to support 32-bit
binaries, plus fixes for generic 32-bit support.
o Fix use of s390 sys_fork().
o Add my_syscall6() for ARM.
o Support different platforms having different errno definitions.
o Fix ppoll/ppoll_time64 arguments (add the fifth argument).
o Force use of little endian on MIPS.
o Improved testing, for example, better handling of different
compilers and compiler versions, comparing nolibc behavior
to that of libc, and additional test cases.
o Improve syntax and header ordering.
o Use existing <linux/reboot.h> instead of redefining constants.
o Add syscall().
-----BEGIN PGP SIGNATURE-----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=Is+H
-----END PGP SIGNATURE-----
Merge tag 'nolibc.2023.06.22a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull nolibc updates from Paul McKenney:
- Add stackprotector support
- Fix RISC-V load-store instruction syntax to support 32-bit binaries,
plus fixes for generic 32-bit support
- Fix use of s390 sys_fork()
- Add my_syscall6() for ARM
- Support different platforms having different errno definitions
- Fix ppoll/ppoll_time64 arguments (add the fifth argument)
- Force use of little endian on MIPS
- Improved testing, for example, better handling of different compilers
and compiler versions, comparing nolibc behavior to that of libc, and
additional test cases
- Improve syntax and header ordering
- Use existing <linux/reboot.h> instead of redefining constants
- Add syscall()
* tag 'nolibc.2023.06.22a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (53 commits)
selftests/nolibc: make sure gcc always use little endian on MIPS
selftests/nolibc: also count skipped and failed tests in output
selftests/nolibc: add new gettimeofday test cases
selftests/nolibc: remove gettimeofday_bad1/2 completely
selftests/nolibc: support two errnos with EXPECT_SYSER2()
tools/nolibc: open: fix up compile warning for arm
tools/nolibc: arm: add missing my_syscall6
selftests/nolibc: use INT_MAX instead of __INT_MAX__
selftests/nolibc: not include limits.h for nolibc
selftests/nolibc: fix up compile warning with glibc on x86_64
selftests/nolibc: allow specify extra arguments for qemu
selftests/nolibc: remove test gettimeofday_null
tools/nolibc: ensure fast64 integer types have 64 bits
selftests/nolibc: test_fork: fix up duplicated print
tools/nolibc: ppoll/ppoll_time64: add a missing argument
selftests/nolibc: remove the duplicated gettimeofday_bad2
selftests/nolibc: print name instead of number for EOVERFLOW
tools/nolibc: support nanoseconds in stat()
selftests/nolibc: prevent coredumps during test execution
tools/nolibc: add support for prctl()
...
This pull contains the following branches:
doc.2023.05.10a: Documentation updates
fixes.2023.05.11a: Miscellaneous fixes, perhaps most notably:
o Remove RCU_NONIDLE(). The new visibility of most of the idle
loop to RCU has obsoleted this API.
o Make the RCU_SOFTIRQ callback-invocation time limit also apply
to the rcuc kthreads that invoke callbacks for CONFIG_PREEMPT_RT.
o Add a jiffies-based callback-invocation time limit to handle
long-running callbacks. (The local_clock() function is only
invoked once per 32 callbacks due to its high overhead.)
o Stop rcu_tasks_invoke_cbs() from using never-onlined CPUs,
which fixes a bug that can occur on systems with non-contiguous
CPU numbering.
kvfree.2023.05.10a: kvfree_rcu updates
o Eliminate the single-argument variant of k[v]free_rcu() now
that all uses have been converted to k[v]free_rcu_mightsleep().
o Add WARN_ON_ONCE() checks for k[v]free_rcu*() freeing callbacks
too soon. Yes, this is closing the barn door after the horse
has escaped, but Murphy says that there will be more horses.
nocb.2023.05.11a: Callback-offloading updates
o Fix a number of bugs involving the shrinker and lazy callbacks.
rcu-tasks.2023.05.10a: Tasks RCU updates
torture.2023.05.15a: Torture-test updates
rcu-urgent.2023.06.06a: Urgent SRCU fix (already pulled)
-----BEGIN PGP SIGNATURE-----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=3LCd
-----END PGP SIGNATURE-----
Merge tag 'rcu.2023.06.22a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
"Documentation updates
Miscellaneous fixes, perhaps most notably:
- Remove RCU_NONIDLE(). The new visibility of most of the idle loop
to RCU has obsoleted this API.
- Make the RCU_SOFTIRQ callback-invocation time limit also apply to
the rcuc kthreads that invoke callbacks for CONFIG_PREEMPT_RT.
- Add a jiffies-based callback-invocation time limit to handle
long-running callbacks. (The local_clock() function is only invoked
once per 32 callbacks due to its high overhead.)
- Stop rcu_tasks_invoke_cbs() from using never-onlined CPUs, which
fixes a bug that can occur on systems with non-contiguous CPU
numbering.
kvfree_rcu updates:
- Eliminate the single-argument variant of k[v]free_rcu() now that
all uses have been converted to k[v]free_rcu_mightsleep().
- Add WARN_ON_ONCE() checks for k[v]free_rcu*() freeing callbacks too
soon. Yes, this is closing the barn door after the horse has
escaped, but Murphy says that there will be more horses.
Callback-offloading updates:
- Fix a number of bugs involving the shrinker and lazy callbacks.
Tasks RCU updates
Torture-test updates"
* tag 'rcu.2023.06.22a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (32 commits)
torture: Remove duplicated argument -enable-kvm for ppc64
doc/rcutorture: Add description of rcutorture.stall_cpu_block
rcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale
rcu/rcuscale: Move rcu_scale_*() after kfree_scale_cleanup()
rcutorture: Correct name of use_softirq module parameter
locktorture: Add long_hold to adjust lock-hold delays
rcu/nocb: Make shrinker iterate only over NOCB CPUs
rcu-tasks: Stop rcu_tasks_invoke_cbs() from using never-onlined CPUs
rcu: Make rcu_cpu_starting() rely on interrupts being disabled
rcu: Mark rcu_cpu_kthread() accesses to ->rcu_cpu_has_work
rcu: Mark additional concurrent load from ->cpu_no_qs.b.exp
rcu: Employ jiffies-based backstop to callback time limit
rcu: Check callback-invocation time limit for rcuc kthreads
rcu: Remove RCU_NONIDLE()
rcu: Add more RCU files to kernel-api.rst
rcu-tasks: Clarify the cblist_init_generic() function's pr_info() output
rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()
rcu/nocb: Recheck lazy callbacks under the ->nocb_lock from shrinker
rcu/nocb: Fix shrinker race against callback enqueuer
rcu/nocb: Protect lazy shrinker against concurrent (de-)offloading
...
* Improvements
- Support Pin Assignment D in getting mux state.
- Emit an uevent when EC panics so that userland programs get chance
to capture EC coredumps (LPC interface only).
- Send EC_CMD_HOST_SLEEP_EVENT to EC at the very beginning/end of
system suspend/resume so that EC can watch the duration more
accurately (LPC interface only).
* Misc
- Switch back from I2C .probe_new() to .probe().
- Use %*ph for printing hexdump of small buffers.
-----BEGIN PGP SIGNATURE-----
iIkEABYIADEWIQS0yQeDP3cjLyifNRUrxTEGBto89AUCZJkmZBMcdHp1bmdiaUBr
ZXJuZWwub3JnAAoJECvFMQYG2jz0cngBAO0x62c4IhOmzAjGNY0Dg7M2fs4exXT+
UHgNjk+ryxLsAPwKyHH1R3jhsO5IHz/gxfM1BQEWS4crNXDgcmA9OmIFDg==
=pjpq
-----END PGP SIGNATURE-----
Merge tag 'tag-chrome-platform-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux
Pull chrome platform updates from Tzung-Bi Shih:
"Improvements:
- Support Pin Assignment D in getting mux state
- Emit an uevent when EC panics so that userland programs get chance
to capture EC coredumps (LPC interface only)
- Send EC_CMD_HOST_SLEEP_EVENT to EC at the very beginning/end of
system suspend/resume so that EC can watch the duration more
accurately (LPC interface only)
Misc:
- Switch back from I2C .probe_new() to .probe()
- Use %*ph for printing hexdump of small buffers"
* tag 'tag-chrome-platform-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
platform/chrome: cros_ec_spi: Use %*ph for printing hexdump of a small buffer
platform/chrome: Switch i2c drivers back to use .probe()
platform/chrome: cros_ec_lpc: Move host command to prepare/complete
platform/chrome: cros_ec: Report EC panic as uevent
platform/chrome: cros_typec_switch: Add Pin D support
- Add new IOCTLs to the int340x thermal driver to allow user space to
retrieve the Passive v2 thermal table (Srinivas Pandruvada).
- Add DT bindings for SM6375, MSM8226 and QCM2290 Qcom platforms (Konrad
Dybcio).
- Add DT bindings and support for QCom MSM8226 (Matti Lehtimäki).
- Add DT bindings for QCom ipq9574 (Praveenkumar I).
- Convert bcm2835 DT bindings to the yaml schema (Stefan Wahren).
- Allow selecting the bang-bang governor as default (Thierry Reding).
- Refactor and prepare the code to set the scene for RCar Gen4 (Wolfram
Sang).
- Clean up and fix the QCom tsens drivers. Add DT bindings and
calibration for the MSM8909 platform (Stephan Gerhold).
- Revert a patch introducing a wrong usage of devm_of_iomap() on the
Mediatek platform (Ricardo Cañuelo).
- Fix the clock vs reset ordering in order to conform to the
documentation on the sun8i (Christophe JAILLET).
- Prevent setting up undocumented registers, enable the only described
sensors and add the version 2.1 on the Qoriq sensor (Peng Fan).
- Add DT bindings and support for the Armada AP807 (Alex Leibovich).
- Update the mlx5 driver with the recent thermal changes (Daniel
Lezcano).
- Convert to platform remove callback returning void on STM32 (Uwe
Kleine-König).
- Add an error information printing for devm_thermal_add_hwmon_sysfs()
and remove the error from the Sun8i, Amlogic, i.MX, TI, K3, Tegra,
Qoriq, Mediateka and QCom (Yangtao Li).
- Register as hwmon sensor for the Generic ADC (Chen-Yu Tsai).
- Use the dev_err_probe() function in the QCom tsens alarm driver (Luca
Weiss).
-----BEGIN PGP SIGNATURE-----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=dtvf
-----END PGP SIGNATURE-----
Merge tag 'thermal-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These extend the int340x thermal driver, add thermal DT bindings for
some Qcom platforms, add DT bindings and support for Armada AP807 and
MSM8909, allow selecting the bang-bang thermal governor as the default
one, address issues in several thermal drivers for ARM platforms and
clean up code.
Specifics:
- Add new IOCTLs to the int340x thermal driver to allow user space to
retrieve the Passive v2 thermal table (Srinivas Pandruvada)
- Add DT bindings for SM6375, MSM8226 and QCM2290 Qcom platforms
(Konrad Dybcio)
- Add DT bindings and support for QCom MSM8226 (Matti Lehtimäki)
- Add DT bindings for QCom ipq9574 (Praveenkumar I)
- Convert bcm2835 DT bindings to the yaml schema (Stefan Wahren)
- Allow selecting the bang-bang governor as default (Thierry Reding)
- Refactor and prepare the code to set the scene for RCar Gen4
(Wolfram Sang)
- Clean up and fix the QCom tsens drivers. Add DT bindings and
calibration for the MSM8909 platform (Stephan Gerhold)
- Revert a patch introducing a wrong usage of devm_of_iomap() on the
Mediatek platform (Ricardo Cañuelo)
- Fix the clock vs reset ordering in order to conform to the
documentation on the sun8i (Christophe JAILLET)
- Prevent setting up undocumented registers, enable the only
described sensors and add the version 2.1 on the Qoriq sensor (Peng
Fan)
- Add DT bindings and support for the Armada AP807 (Alex Leibovich)
- Update the mlx5 driver with the recent thermal changes (Daniel
Lezcano)
- Convert to platform remove callback returning void on STM32 (Uwe
Kleine-König)
- Add an error information printing for devm_thermal_add_hwmon_sysfs()
and remove the error from the Sun8i, Amlogic, i.MX, TI, K3, Tegra,
Qoriq, Mediateka and QCom (Yangtao Li)
- Register as hwmon sensor for the Generic ADC (Chen-Yu Tsai)
- Use the dev_err_probe() function in the QCom tsens alarm driver
(Luca Weiss)"
* tag 'thermal-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (39 commits)
thermal/drivers/qcom/temp-alarm: Use dev_err_probe
thermal/drivers/generic-adc: Register thermal zones as hwmon sensors
thermal/drivers/mediatek/lvts_thermal: Remove redundant msg in lvts_ctrl_start()
thermal/drivers/qcom: Remove redundant msg at probe time
thermal/drivers/ti-soc: Remove redundant msg in ti_thermal_expose_sensor()
thermal/drivers/qoriq: Remove redundant msg in qoriq_tmu_register_tmu_zone()
thermal/drivers/tegra: Remove redundant msg in tegra_tsensor_register_channel()
drivers/thermal/k3: Remove redundant msg in k3_bandgap_probe()
thermal/drivers/imx: Remove redundant msg in imx8mm_tmu_probe() and imx_sc_thermal_probe()
thermal/drivers/amlogic: Remove redundant msg in amlogic_thermal_probe()
thermal/drivers/sun8i: Remove redundant msg in sun8i_ths_register()
thermal/hwmon: Add error information printing for devm_thermal_add_hwmon_sysfs()
thermal/drivers/stm32: Convert to platform remove callback returning void
net/mlx5: Update the driver with the recent thermal changes
thermal/drivers/armada: Add support for AP807 thermal data
dt-bindings: armada-thermal: Add armada-ap807-thermal compatible
thermal/drivers/qoriq: Support version 2.1
thermal/drivers/qoriq: Only enable supported sensors
thermal/drivers/qoriq: No need to program site adjustment register
thermal/drivers/mediatek/lvts_thermal: Register thermal zones as hwmon sensors
...
- Introduce power capping core support for Intel TPMI (Topology Aware
Register and PM Capsule Interface) and a TPMI interface driver for
Intel RAPL (Zhang Rui, Dan Carpenter).
- Fix CONFIG_IOSF_MBI dependency in the Intel RAPL power capping
driver (Zhang Rui).
- Fix invalid initialization for pl4_supported field in the Intel RAPL
power capping driver (Sumeet Pawnikar).
- Clean up the intel_idle driver, make it work with VM guests that
cannot use the MWAIT instruction and address the case in which the
host may enter a deep idle state when the guest is idle (Arjan van
de Ven).
- Prevent cpufreq drivers that provide the ->adjust_perf() callback
without a ->fast_switch() one which is used as a fallback from the
former in some cases (Wyes Karny).
- Fix some issues related to the AMD P-state cpufreq driver (Mario
Limonciello, Wyes Karny).
- Fix the energy_performance_preference attribute handling in the
intel_pstate driver in passive mode (Tero Kristo).
- Fix the handling of pm_suspend_target_state when CONFIG_PM is unset
(Kai-Heng Feng).
- Correct spelling mistake in a comment in the hibernation code (Wang
Honghui).
- Add arch_resume_nosmt() prototype to avoid a "missing prototypes"
build warning (Arnd Bergmann).
- Restrict pm_pr_dbg() to system-wide power transitions and use it in
a few additional places (Mario Limonciello).
- Drop verification of in-params from genpd_add_device() and ensure
that all of its callers will do it (Ulf Hansson).
- Prevent possible integer overflows from occurring in
genpd_parse_state() (Nikita Zhandarovich).
- Reorder fieldls in 'struct devfreq_dev_status' to reduce its size
somewhat (Christophe JAILLET).
- Ensure that the Exynos PPMU driver is already loaded before the
Exynos Bus driver starts probing so as to avoid a possible freeze
loading of the kernel modules (Marek Szyprowski).
- Fix variable deferencing before NULL check in the mtk-cci devfreq
driver (Sukrut Bellary).
-----BEGIN PGP SIGNATURE-----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=SZV7
-----END PGP SIGNATURE-----
Merge tag 'pm-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add Intel TPMI (Topology Aware Register and PM Capsule
Interface) support to the power capping subsystem, extend the
intel_idle driver to work in VM guests where MWAIT is not available,
extend the system-wide power management diagnostics, fix bugs and
clean up code.
Specifics:
- Introduce power capping core support for Intel TPMI (Topology Aware
Register and PM Capsule Interface) and a TPMI interface driver for
Intel RAPL (Zhang Rui, Dan Carpenter)
- Fix CONFIG_IOSF_MBI dependency in the Intel RAPL power capping
driver (Zhang Rui)
- Fix invalid initialization for pl4_supported field in the Intel
RAPL power capping driver (Sumeet Pawnikar)
- Clean up the intel_idle driver, make it work with VM guests that
cannot use the MWAIT instruction and address the case in which the
host may enter a deep idle state when the guest is idle (Arjan van
de Ven)
- Prevent cpufreq drivers that provide the ->adjust_perf() callback
without a ->fast_switch() one which is used as a fallback from the
former in some cases (Wyes Karny)
- Fix some issues related to the AMD P-state cpufreq driver (Mario
Limonciello, Wyes Karny)
- Fix the energy_performance_preference attribute handling in the
intel_pstate driver in passive mode (Tero Kristo)
- Fix the handling of pm_suspend_target_state when CONFIG_PM is unset
(Kai-Heng Feng)
- Correct spelling mistake in a comment in the hibernation code (Wang
Honghui)
- Add arch_resume_nosmt() prototype to avoid a "missing prototypes"
build warning (Arnd Bergmann)
- Restrict pm_pr_dbg() to system-wide power transitions and use it in
a few additional places (Mario Limonciello)
- Drop verification of in-params from genpd_add_device() and ensure
that all of its callers will do it (Ulf Hansson)
- Prevent possible integer overflows from occurring in
genpd_parse_state() (Nikita Zhandarovich)
- Reorder fieldls in 'struct devfreq_dev_status' to reduce its size
somewhat (Christophe JAILLET)
- Ensure that the Exynos PPMU driver is already loaded before the
Exynos Bus driver starts probing so as to avoid a possible freeze
loading of the kernel modules (Marek Szyprowski)
- Fix variable deferencing before NULL check in the mtk-cci devfreq
driver (Sukrut Bellary)"
* tag 'pm-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (42 commits)
intel_idle: Add a "Long HLT" C1 state for the VM guest mode
cpufreq: intel_pstate: Fix energy_performance_preference for passive
cpufreq: amd-pstate: Add a kernel config option to set default mode
cpufreq: amd-pstate: Set a fallback policy based on preferred_profile
ACPI: CPPC: Add definition for undefined FADT preferred PM profile value
cpufreq: amd-pstate: Set default governor to schedutil
PM: domains: Move the verification of in-params from genpd_add_device()
cpufreq: amd-pstate: Make amd-pstate EPP driver name hyphenated
cpufreq: amd-pstate: Write CPPC enable bit per-socket
intel_idle: Add support for using intel_idle in a VM guest using just hlt
cpufreq: Fail driver register if it has adjust_perf without fast_switch
intel_idle: clean up the (new) state_update_enter_method function
intel_idle: refactor state->enter manipulation into its own function
platform/x86/amd: pmc: Use pm_pr_dbg() for suspend related messages
pinctrl: amd: Use pm_pr_dbg to show debugging messages
ACPI: x86: Add pm_debug_messages for LPS0 _DSM state tracking
include/linux/suspend.h: Only show pm_pr_dbg messages at suspend/resume
powercap: RAPL: Fix a NULL vs IS_ERR() bug
powercap: RAPL: Fix CONFIG_IOSF_MBI dependency
powercap: RAPL: fix invalid initialization for pl4_supported field
...
- Reduce ACPI device enumeration overhead related to devices with
dependencies (Rafael Wysocki).
- Fix the handling of Microsoft LPS0 _DSM for suspend-to-idle (Mario
Limonciello).
- Fix section mismatch warning in the ACPI suspend-to-idle code (Arnd
Bergmann).
- Drop several ACPI resource management quirks related to IRQ ovverides
on AMD "Zen" systems (Mario Limonciello).
- Modify the ACPI EC driver to make it only clear the EC GPE status
when handling the GPE (Jeremy Compostella).
- Add quirks to work around ACPI tables defects on Lenovo Yoga Book
yb1-x90f/l and Nextbook Ares 8A (Hans de Goede).
- Add ACPi backlight quirks for Dell Studio 1569, Lenovo ThinkPad X131e
(3371 AMD version) and Apple iMac11,3 and stop trying to use vendor
backlight control on relatively recent systems (Hans de Goede).
- Add pwm_lookup_table entry for second PWM on CHT/BSW devices in the
ACPI LPSS (Intel SoC) driver (Hans de Goede).
- Add nfit_intel_shutdown_status() declaration to a local header to
avoid a "missing prototypes" build warning (Arnd Bergmann).
- Clean up the ACPI thermal driver and drop some dead or otherwise
unneded code from it (Rafael Wysocki).
- Rework the handling of notifications in the ACPI button drivers so
as to allow the common notification handling code for devices to be
simplified (Rafael Wysocki).
- Make ghes_get_devices() return NULL to indicate that there are no
GHES devices so as to allow vendor-specific EDAC drivers to probe
then (Li Yang).
- Mark bert_disable() as __initdata and drop an unused function from
the APEI GHES code (Miaohe Lin).
- Make the ACPI PAD (Processor Aggregator Device) driver realize that
Zhaoxin CPUs support nonstop TSC (Tony W Wang-oc).
- Drop the certainly unnecessary and likely incorrect inclusion of
linux/arm-smccc.h from acpi_ffh.c (Sudeep Holla).
-----BEGIN PGP SIGNATURE-----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=46Do
-----END PGP SIGNATURE-----
Merge tag 'acpi-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These rework the handling of notifications in ACPI button drivers (to
enable future simplifications and cleanups), clean up the ACPI thermal
driver, update the ACPI backlight driver, add quirks working around
AML bugs on some systems, fix some assorted issues and clean up code.
Specifics:
- Reduce ACPI device enumeration overhead related to devices with
dependencies (Rafael Wysocki)
- Fix the handling of Microsoft LPS0 _DSM for suspend-to-idle (Mario
Limonciello)
- Fix section mismatch warning in the ACPI suspend-to-idle code (Arnd
Bergmann)
- Drop several ACPI resource management quirks related to IRQ
ovverides on AMD "Zen" systems (Mario Limonciello)
- Modify the ACPI EC driver to make it only clear the EC GPE status
when handling the GPE (Jeremy Compostella)
- Add quirks to work around ACPI tables defects on Lenovo Yoga Book
yb1-x90f/l and Nextbook Ares 8A (Hans de Goede)
- Add ACPi backlight quirks for Dell Studio 1569, Lenovo ThinkPad
X131e (3371 AMD version) and Apple iMac11,3 and stop trying to use
vendor backlight control on relatively recent systems (Hans de
Goede)
- Add pwm_lookup_table entry for second PWM on CHT/BSW devices in the
ACPI LPSS (Intel SoC) driver (Hans de Goede)
- Add nfit_intel_shutdown_status() declaration to a local header to
avoid a "missing prototypes" build warning (Arnd Bergmann)
- Clean up the ACPI thermal driver and drop some dead or otherwise
unneded code from it (Rafael Wysocki)
- Rework the handling of notifications in the ACPI button drivers so
as to allow the common notification handling code for devices to be
simplified (Rafael Wysocki)
- Make ghes_get_devices() return NULL to indicate that there are no
GHES devices so as to allow vendor-specific EDAC drivers to probe
then (Li Yang)
- Mark bert_disable() as __initdata and drop an unused function from
the APEI GHES code (Miaohe Lin)
- Make the ACPI PAD (Processor Aggregator Device) driver realize that
Zhaoxin CPUs support nonstop TSC (Tony W Wang-oc)
- Drop the certainly unnecessary and likely incorrect inclusion of
linux/arm-smccc.h from acpi_ffh.c (Sudeep Holla)"
* tag 'acpi-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (30 commits)
ACPI: video: Add backlight=native DMI quirk for Dell Studio 1569
ACPI: thermal: Drop struct acpi_thermal_flags
ACPI: thermal: Drop struct acpi_thermal_state
ACPI: bus: Simplify installation and removal of notify callback
ACPI: tiny-power-button: Eliminate the driver notify callback
ACPI: button: Use different notify handlers for lid and buttons
ACPI: button: Eliminate the driver notify callback
ACPI: thermal: Eliminate struct acpi_thermal_state_flags
ACPI: thermal: Move acpi_thermal_driver definition
ACPI: thermal: Move symbol definitions to one place
ACPI: thermal: Drop redundant ACPI_TRIPS_REFRESH_DEVICES symbol
ACPI: thermal: Use BIT() macro for defining flags
APEI: GHES: correctly return NULL for ghes_get_devices()
ACPI: FFH: Drop the inclusion of linux/arm-smccc.h
ACPI: PAD: mark Zhaoxin CPUs NONSTOP TSC correctly
ACPI: APEI: mark bert_disable as __initdata
ACPI: EC: Clear GPE on interrupt handling only
ACPI: video: Stop trying to use vendor backlight control on laptops from after ~2012
ACPI: x86: s2idle: Adjust Microsoft LPS0 _DSM handling sequence
ACPI: resource: Remove "Zen" specific match and quirks
...
- Support for the Armv8.9 Permission Indirection Extensions. While this
feature doesn't add new functionality, it enables future support for
Guarded Control Stacks (GCS) and Permission Overlays.
- User-space support for the Armv8.8 memcpy/memset instructions.
- arm64 perf: support the HiSilicon SoC uncore PMU, Arm CMN sysfs
identifier, support for the NXP i.MX9 SoC DDRC PMU, fixes and
cleanups.
- Removal of superfluous ISBs on context switch (following retrospective
architecture tightening).
- Decode the ISS2 register during faults for additional information to
help with debugging.
- KPTI clean-up/simplification of the trampoline exit code.
- Addressing several -Wmissing-prototype warnings.
- Kselftest improvements for signal handling and ptrace.
- Fix TPIDR2_EL0 restoring on sigreturn
- Clean-up, robustness improvements of the module allocation code.
- More sysreg conversions to the automatic register/bitfields
generation.
- CPU capabilities handling cleanup.
- Arm documentation updates: ACPI, ptdump.
-----BEGIN PGP SIGNATURE-----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=rNBK
-----END PGP SIGNATURE-----
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Notable features are user-space support for the memcpy/memset
instructions and the permission indirection extension.
- Support for the Armv8.9 Permission Indirection Extensions. While
this feature doesn't add new functionality, it enables future
support for Guarded Control Stacks (GCS) and Permission Overlays
- User-space support for the Armv8.8 memcpy/memset instructions
- arm64 perf: support the HiSilicon SoC uncore PMU, Arm CMN sysfs
identifier, support for the NXP i.MX9 SoC DDRC PMU, fixes and
cleanups
- Removal of superfluous ISBs on context switch (following
retrospective architecture tightening)
- Decode the ISS2 register during faults for additional information
to help with debugging
- KPTI clean-up/simplification of the trampoline exit code
- Addressing several -Wmissing-prototype warnings
- Kselftest improvements for signal handling and ptrace
- Fix TPIDR2_EL0 restoring on sigreturn
- Clean-up, robustness improvements of the module allocation code
- More sysreg conversions to the automatic register/bitfields
generation
- CPU capabilities handling cleanup
- Arm documentation updates: ACPI, ptdump"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (124 commits)
kselftest/arm64: Add a test case for TPIDR2 restore
arm64/signal: Restore TPIDR2 register rather than memory state
arm64: alternatives: make clean_dcache_range_nopatch() noinstr-safe
Documentation/arm64: Add ptdump documentation
arm64: hibernate: remove WARN_ON in save_processor_state
kselftest/arm64: Log signal code and address for unexpected signals
docs: perf: Fix warning from 'make htmldocs' in hisi-pmu.rst
arm64/fpsimd: Exit streaming mode when flushing tasks
docs: perf: Add new description for HiSilicon UC PMU
drivers/perf: hisi: Add support for HiSilicon UC PMU driver
drivers/perf: hisi: Add support for HiSilicon H60PA and PAv3 PMU driver
perf: arm_cspmu: Add missing MODULE_DEVICE_TABLE
perf/arm-cmn: Add sysfs identifier
perf/arm-cmn: Revamp model detection
perf/arm_dmc620: Add cpumask
arm64: mm: fix VA-range sanity check
arm64/mm: remove now-superfluous ISBs from TTBR writes
Documentation/arm64: Update ACPI tables from BBR
Documentation/arm64: Update references in arm-acpi
Documentation/arm64: Update ARM and arch reference
...
Development updates for v6.5-rc1
- lots of build cleanups from Arnd spread throughout the arch/arm tree
- replace strlcpy() with the preferred strscpy()
- use sign_extend32() in the module linker
- drop handle_irq() machine descriptor method
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEuNNh8scc2k/wOAE+9OeQG+StrGQFAmSZjNMACgkQ9OeQG+St
rGSbJRAAqs95KdLOplvEOmTpjmtO5QpiIHDvkM6jM8lnMDoskWYW2evr7awzltUH
unOhHaWNqDKkBCgHxGl76uXZCLI4u65NFxej7x7u1hl2vREiV4V0Pb4h3vZZwPDv
1tX0LVCqYjCmOT5gXbDKkuL3F3x4uvdXO3ne0C46Co1lZ6Alc7xd5/1fByyDvuqv
gxy0UDyJwVVsAQiYc9VcIpYttd05zDRetTRu4ez+f+hsHwOgCEe6ePlBL3TwkpQ0
BGxXM1Vg9b9fpepDR7Zb06nfPtilz8mP9H/BBIMHf9/YDK9SAuqVMoZlzEb2Qfol
SvgPZGYq2Al+ggOJgiOIgTtBasdF21w8E3WVZ0+4BWv+G+tlq3IVtf+h7HhOlOTj
NUwQJh9RYIZEdu9VEUFbxuguv2/e6xN7adenyXwnvGj3csTW6ujh2NGRT+bhKwxf
UtvAAsr8opWuU/lFFgS3HzMC1mFpJYbzT+82yxY2ho/dihSN+gMh3SB3avKfl5hY
MLbgAVukKv1tBbihwimOiNPQEFI3sGmgKG8R3mj/WHESG4mFsU8AxLokGs1ADPtO
zP9SuugzsxldpqT4VBdgl5QZ7bFYevHyVMus5zRRvGudJKTP6K/8C0KBu3vfJKs9
1COxGcBEb6d2mspn+POoa+VBGB2Q+v87ld7GTXDN3MmQF1ExD4g=
=/AbD
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- lots of build cleanups from Arnd spread throughout the arch/arm tree
- replace strlcpy() with the preferred strscpy()
- use sign_extend32() in the module linker
- drop handle_irq() machine descriptor method
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9315/1: fiq: include asm/mach/irq.h for prototypes
ARM: 9314/1: tcm: move tcm_init() prototype to asm/tcm.h
ARM: 9313/1: vdso: add missing prototypes
ARM: 9312/1: vfp: include asm/neon.h in vfpmodule.c
ARM: 9311/1: decompressor: move function prototypes to misc.h
ARM: 9310/1: xip-kernel: add __inflate_kernel_data prototype
ARM: 9309/1: add missing syscall prototypes
ARM: 9308/1: move setup functions to header
ARM: 9307/1: nommu: include asm/idmap.h
ARM: 9306/1: cacheflush: avoid __flush_anon_page() missing-prototype warning
ARM: 9305/1: add clear/copy_user_highpage declarations
ARM: 9304/1: add prototype for function called only from asm
ARM: 9303/1: kprobes: avoid missing-declaration warnings
ARM: 9302/1: traps: hide unused functions on NOMMU
ARM: 9301/1: dma-mapping: hide unused dma_contiguous_early_fixup function
ARM: 9300/1: Replace all non-returning strlcpy with strscpy
ARM: 9299/1: module: use sign_extend32() to extend the signedness
ARM: 9298/1: Drop custom mdesc->handle_irq()
- Remove repeated 'the' in comments
- Remove unused current_untag_mask()
- Document urgent tip branch timing
- Clean up MSR kernel-doc notation
- Clean up paravirt_ops doc
- Update Srivatsa S. Bhat's maintained areas
- Remove unused extern declaration acpi_copy_wakeup_routine()
-----BEGIN PGP SIGNATURE-----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=N82i
-----END PGP SIGNATURE-----
Merge tag 'x86_cleanups_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Dave Hansen:
"As usual, these are all over the map. The biggest cluster is work from
Arnd to eliminate -Wmissing-prototype warnings:
- Address -Wmissing-prototype warnings
- Remove repeated 'the' in comments
- Remove unused current_untag_mask()
- Document urgent tip branch timing
- Clean up MSR kernel-doc notation
- Clean up paravirt_ops doc
- Update Srivatsa S. Bhat's maintained areas
- Remove unused extern declaration acpi_copy_wakeup_routine()"
* tag 'x86_cleanups_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
x86/acpi: Remove unused extern declaration acpi_copy_wakeup_routine()
Documentation: virt: Clean up paravirt_ops doc
x86/mm: Remove unused current_untag_mask()
x86/mm: Remove repeated word in comments
x86/lib/msr: Clean up kernel-doc notation
x86/platform: Avoid missing-prototype warnings for OLPC
x86/mm: Add early_memremap_pgprot_adjust() prototype
x86/usercopy: Include arch_wb_cache_pmem() declaration
x86/vdso: Include vdso/processor.h
x86/mce: Add copy_mc_fragile_handle_tail() prototype
x86/fbdev: Include asm/fb.h as needed
x86/hibernate: Declare global functions in suspend.h
x86/entry: Add do_SYSENTER_32() prototype
x86/quirks: Include linux/pnp.h for arch_pnpbios_disabled()
x86/mm: Include asm/numa.h for set_highmem_pages_init()
x86: Avoid missing-prototype warnings for doublefault code
x86/fpu: Include asm/fpu/regset.h
x86: Add dummy prototype for mk_early_pgtbl_32()
x86/pci: Mark local functions as 'static'
x86/ftrace: Move prepare_ftrace_return prototype to header
...
a fatal shutdown during TDX private<=>shared conversion
- Annotate sites where VM "exit reasons" are reused as hypercall
numbers.
-----BEGIN PGP SIGNATURE-----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=Hr3D
-----END PGP SIGNATURE-----
Merge tag 'x86_tdx_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 tdx updates from Dave Hansen:
- Fix a race window where load_unaligned_zeropad() could cause a fatal
shutdown during TDX private<=>shared conversion
The race has never been observed in practice but might allow
load_unaligned_zeropad() to catch a TDX page in the middle of its
conversion process which would lead to a fatal and unrecoverable
guest shutdown.
- Annotate sites where VM "exit reasons" are reused as hypercall
numbers.
* tag 'x86_tdx_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Fix enc_status_change_finish_noop()
x86/tdx: Fix race between set_memory_encrypted() and load_unaligned_zeropad()
x86/mm: Allow guest.enc_status_change_prepare() to fail
x86/tdx: Wrap exit reason with hcall_func()
-----BEGIN PGP SIGNATURE-----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=17jK
-----END PGP SIGNATURE-----
Merge tag 'x86_platform_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Dave Hansen:
"Allow CPUs in SGX/HPE Ultraviolet to start using Sub-NUMA clustering
(SNC) mode. SNC has been around outside the UV world for a while but
evidently never worked on UV systems.
SNC is rather notorious for breaking bad assumptions of a 1:1
relationship between physical sockets and NUMA nodes. The UV code was
rather prolific with these assumptions and took quite a bit of
refactoring to remove them"
* tag 'x86_platform_for_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/uv: Update UV[23] platform code for SNC
x86/platform/uv: Remove remaining BUG_ON() and BUG() calls
x86/platform/uv: UV support for sub-NUMA clustering
x86/platform/uv: Helper functions for allocating and freeing conversion tables
x86/platform/uv: When searching for minimums, start at INT_MAX not 99999
x86/platform/uv: Fix printed information in calc_mmioh_map
x86/platform/uv: Introduce helper function uv_pnode_to_socket.
x86/platform/uv: Add platform resolving #defines for misc GAM_MMIOH_REDIRECT*
and assert __x86_return_thunk's alignment so that future changes to
the symbol macros do not accidentally break them.
- Remove CONFIG_X86_FEATURE_NAMES Kconfig option as its existence is
pointless
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSZ1wgACgkQEsHwGGHe
VUrXlRAAhIonFM1suIHo6w085jY5YA1XnsziJr/bT3e16FdHrF1i3RBEX4ml0m3O
ADwa9dMsC9UJIa+/TKRNFfQvfRcLE/rsUKlS1Rluf/IRIxuSt/Oa4bFQHGXFRwnV
eSlnWTNiaWrRs/vJEYAnMOe98oRyElHWa9kZ7K5FC+Ksfn/WO1U1RQ2NWg2A2wkN
8MHJiS41w2piOrLU/nfUoI7+esHgHNlib222LoptDGHuaY8V2kBugFooxAEnTwS3
PCzWUqCTgahs393vbx6JimoIqgJDa7bVdUMB0kOUHxtpbBiNdYYVy6e7UKnV1yjB
qP3v9jQW4+xIyRmlFiErJXEZx7DjAIP5nulGRrUMzRfWEGF8mdRZ+ugGqFMHCeC8
vXI+Ixp2vvsfhG3N/algsJUdkjlpt3hBpElRZCfR08M253KAbAmUNMOr4sx4RPi5
ymC+pLIHd1K0G9jiZaFnOMaY71gAzWizwxwjFKLQMo44q+lpNJvsVO00cr+9RBYj
LQL2APkONVEzHPMYR/LrXCslYaW//DrfLdRQjNbzUTonxFadkTO2Eu8J90B/5SFZ
CqC1NYKMQPVFeg4XuGWCgZEH+jokCGhl8vvmXClAMcOEOZt0/s4H89EKFkmziyon
L1ZrA/U72gWV8EwD7GLtuFJmnV4Ayl/hlek2j0qNKaj6UUgTFg8=
=LcUq
-----END PGP SIGNATURE-----
Merge tag 'x86_cpu_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Borislav Petkov:
- Compute the purposeful misalignment of zen_untrain_ret automatically
and assert __x86_return_thunk's alignment so that future changes to
the symbol macros do not accidentally break them.
- Remove CONFIG_X86_FEATURE_NAMES Kconfig option as its existence is
pointless
* tag 'x86_cpu_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/retbleed: Add __x86_return_thunk alignment checks
x86/cpu: Remove X86_FEATURE_NAMES
x86/Kconfig: Make X86_FEATURE_NAMES non-configurable in prompt
The gist of it all is that Intel TDX and AMD SEV-SNP confidential
computing guests define the notion of accepting memory before using it
and thus preventing a whole set of attacks against such guests like
memory replay and the like.
There are a couple of strategies of how memory should be accepted
- the current implementation does an on-demand way of accepting.
-----BEGIN PGP SIGNATURE-----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=FS95
-----END PGP SIGNATURE-----
Merge tag 'x86_cc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 confidential computing update from Borislav Petkov:
- Add support for unaccepted memory as specified in the UEFI spec v2.9.
The gist of it all is that Intel TDX and AMD SEV-SNP confidential
computing guests define the notion of accepting memory before using
it and thus preventing a whole set of attacks against such guests
like memory replay and the like.
There are a couple of strategies of how memory should be accepted -
the current implementation does an on-demand way of accepting.
* tag 'x86_cc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
virt: sevguest: Add CONFIG_CRYPTO dependency
x86/efi: Safely enable unaccepted memory in UEFI
x86/sev: Add SNP-specific unaccepted memory support
x86/sev: Use large PSC requests if applicable
x86/sev: Allow for use of the early boot GHCB for PSC requests
x86/sev: Put PSC struct on the stack in prep for unaccepted memory support
x86/sev: Fix calculation of end address based on number of pages
x86/tdx: Add unaccepted memory support
x86/tdx: Refactor try_accept_one()
x86/tdx: Make _tdx_hypercall() and __tdx_module_call() available in boot stub
efi/unaccepted: Avoid load_unaligned_zeropad() stepping into unaccepted memory
efi: Add unaccepted memory support
x86/boot/compressed: Handle unaccepted memory
efi/libstub: Implement support for unaccepted memory
efi/x86: Get full memory map in allocate_e820()
mm: Add support for unaccepted memory
of application containers with dynamically changing task lists
- When reading the tasks file, show the tasks' pid which are only in
the current namespace as opposed to showing the pids from the init
namespace too
- Other fixes and improvements
-----BEGIN PGP SIGNATURE-----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=nu66
-----END PGP SIGNATURE-----
Merge tag 'x86_cache_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
- Implement a rename operation in resctrlfs to facilitate handling of
application containers with dynamically changing task lists
- When reading the tasks file, show the tasks' pid which are only in
the current namespace as opposed to showing the pids from the init
namespace too
- Other fixes and improvements
* tag 'x86_cache_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation/x86: Documentation for MON group move feature
x86/resctrl: Implement rename op for mon groups
x86/resctrl: Factor rdtgroup lock for multi-file ops
x86/resctrl: Only show tasks' pid in current pid namespace
other tooling and thus a slimmer binary is generated. This is
important for distros who have to distribute vmlinux blobs with their
kernel packages too and that extraneous unnecessary data bloats them
for no good reason
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSZv+wACgkQEsHwGGHe
VUpdzhAAvUjNy0I0+kezbE1+o0bA1CKQt06oFrJYUZGk0FEjNrgEkr4Tlgrv+blF
RU/SNBqvFwsonKtLZkB7nTse+aKu6LO1SKqgw0y67Hi98VL3j6GqTqvuaWALGgAs
Zh2hcOLmkVdKoj1vnc2VP8Z6nqifsJhDANAkmrKGypJq+FjEubMfu+/zKTRgi0sv
n0yOQNRB0aXtyMwa5nv5y2fU/Cp0ibvdkxEtCuGh8OKG+yth6lGxqR+mnlrqmVxR
2ATdgMZfnPSNs5MoggAY8zahsdG+npWkcyTzXjk4KfFRVQM269JN5uHPPrRkdMAm
RDN+4aZmvQ8NxsT2U151IhkAiuGTCGlAe5x97KX+33juUZoc67/UhIdytmU3jNyl
33QnkeB8F+s/iNfFbCg9itThvTcWd0ER5zAaNGeoZTaIhpIU6TmBWuJJnbr/hqLa
ckozuIk1wSXKWJheMRPbTBMxCqI3AmP1L3kIgfayHInS/J8QNMT8YmYUDyRb7GkJ
bhsiN/GWtMqTt+bJxYkHHNuDBPCH8tKKneO2LG/KFTUnW7FYLOgQZQf0bO3mNe+C
SVmGjUuSZhM47RiVEmaaLPppBu82CU0SZkt6pp4FuQWkVnwCZgPA/4MF0vTVc5M+
f2V99h3FkTXi75RP7GfVCKnwsFalu7NOyJer6KIm8Hh8x4RTTHo=
=k9Pz
-----END PGP SIGNATURE-----
Merge tag 'x86_build_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build update from Borislav Petkov:
- Remove relocation information from vmlinux as it is not needed by
other tooling and thus a slimmer binary is generated.
This is important for distros who have to distribute vmlinux blobs
with their kernel packages too and that extraneous unnecessary data
bloats them for no good reason
* tag 'x86_build_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/build: Avoid relocation information in final vmlinux
of the ERMS CPUID flag. AMD decoupled them with a BIOS setting so decouple
that dependency in the kernel code too
- Teach the alternatives machinery to handle relocations
- Make debug_alternative accept flags in order to see only that set of
patching done one is interested in
- Other fixes, cleanups and optimizations to the patching code
-----BEGIN PGP SIGNATURE-----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=mH38
-----END PGP SIGNATURE-----
Merge tag 'x86_alternatives_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 instruction alternatives updates from Borislav Petkov:
- Up until now the Fast Short Rep Mov optimizations implied the
presence of the ERMS CPUID flag. AMD decoupled them with a BIOS
setting so decouple that dependency in the kernel code too
- Teach the alternatives machinery to handle relocations
- Make debug_alternative accept flags in order to see only that set of
patching done one is interested in
- Other fixes, cleanups and optimizations to the patching code
* tag 'x86_alternatives_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/alternative: PAUSE is not a NOP
x86/alternatives: Add cond_resched() to text_poke_bp_batch()
x86/nospec: Shorten RESET_CALL_DEPTH
x86/alternatives: Add longer 64-bit NOPs
x86/alternatives: Fix section mismatch warnings
x86/alternative: Optimize returns patching
x86/alternative: Complicate optimize_nops() some more
x86/alternative: Rewrite optimize_nops() some
x86/lib/memmove: Decouple ERMS from FSRM
x86/alternative: Support relocations in alternatives
x86/alternative: Make debug-alternative selective
Those GPUs and CPUs are connected together through the coherent fabric
and the GPU memory controllers report errors through x86's MCA so EDAC
needs to support them. The amd64_edac driver supports now HBM (High
Bandwidth Memory) and thus such heterogeneous memory controller
systems
- Other small cleanups and improvements
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSZiUwACgkQEsHwGGHe
VUphSQ/+JLXTAQ06CNos98MR8iCGdThVujhWt1pBIgjhQFJuf4JlEEtKs9htjbud
9HZvgnGbHahRoO8pMCB0jwtz0ATrPbaOvz4BofVp3SIRiR5jMI0tfmyl8iSrnA3Q
m5pbMh6uiIAlH8aPqQXret2iwp7JXOjnBWksgbmUWkI7d2qseKu98ikXyC4QoCaD
AGRJJ6OCA3P85rdT9qabOuXh6yoELOPKw3j243s22sTLiqn+EuoTE+QX5ZjrQ8Ts
DyXN/pYI/vGVP7sECkWf7PsEf1BkL6m5KeXDB4Ij2YJesQnBlBZQdAcxdGdY8z3M
f/qpLdrYvpcLHQy42Jm5VnnISOvMvAl8YWqCEyUmBjXcLwSPNIKHN9LQuznhnQHr
vssRVqQUg1J+/UWAoIzHdrAQ6zvgv1xlX2dG2YOw3t1WMDnMhztW3eoQv04etD3d
fqQH3MrkGHI4qeq1Mice1Gz+NWQG/PXVhgBzbTBDDCiRJkg1Dhxce1OMRUiM4tUW
0JABoU+KS0RZAKXAwine6v5duYmwK36Vl1SSCCWjqFMeR7XMwWWHA9d7t8+wdT1l
KBIEiRTcRnXaZXyLUPSPRbEF5ALS25RgWVPCA3ibuSUnJjGU7Z7/rbwlQryAefVB
nqjATed0zat4fbL9bvnDuOKQEzkuySvUWpU+Eozxbct6oRu5ms0=
=Vcif
-----END PGP SIGNATURE-----
Merge tag 'ras_core_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Borislav Petkov:
- Add initial support for RAS hardware found on AMD server GPUs (MI200).
Those GPUs and CPUs are connected together through the coherent
fabric and the GPU memory controllers report errors through x86's MCA
so EDAC needs to support them. The amd64_edac driver supports now HBM
(High Bandwidth Memory) and thus such heterogeneous memory controller
systems
- Other small cleanups and improvements
* tag 'ras_core_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
EDAC/amd64: Cache and use GPU node map
EDAC/amd64: Add support for AMD heterogeneous Family 19h Model 30h-3Fh
EDAC/amd64: Document heterogeneous system enumeration
x86/MCE/AMD, EDAC/mce_amd: Decode UMC_V2 ECC errors
x86/amd_nb: Re-sort and re-indent PCI defines
x86/amd_nb: Add MI200 PCI IDs
ras/debugfs: Fix error checking for debugfs_create_dir()
x86/MCE: Check a hw error's address to determine proper recovery action
- amd64_edac: Remove the version string as it is useless and actively
confusing when looking at backported versions of the driver
- Add a driver for the Nuvoton NPCM memory controller
- A debugfs error checking cleanup
-----BEGIN PGP SIGNATURE-----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=e4qx
-----END PGP SIGNATURE-----
Merge tag 'edac_updates_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- amd64_edac: Add support for Zen4 client hardware
- amd64_edac: Remove the version string as it is useless and actively
confusing when looking at backported versions of the driver
- Add a driver for the Nuvoton NPCM memory controller
- A debugfs error checking cleanup
* tag 'edac_updates_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/npcm: Add NPCM memory controller driver
dt-bindings: memory-controllers: nuvoton: Add NPCM memory controller
EDAC/thunderx: Check debugfs file creation retval properly
EDAC/amd64: Add support for ECC on family 19h model 60h-7Fh
EDAC/amd64: Remove module version string
- Ensure that the WBINVD in stop_this_cpu() has been completed before the
control CPU proceedes.
stop_this_cpu() is used for kexec(), reboot and shutdown to park the APs
in a HLT loop.
The control CPU sends an IPI to the APs and waits for their CPU online bits
to be cleared. Once they all are marked "offline" it proceeds.
But stop_this_cpu() clears the CPU online bit before issuing WBINVD,
which means there is no guarantee that the AP has reached the HLT loop.
This was reported to cause intermittent reboot/shutdown failures due to
some dubious interaction with the firmware.
This is not only a problem of WBINVD. The code to actually "stop" the
CPU which runs between clearing the online bit and reaching the HLT loop
can cause large enough delays on its own (think virtualization). That's
especially dangerous for kexec() as kexec() expects that all APs are in
a safe state and not executing code while the boot CPU jumps to the new
kernel. There are more issues vs. kexec() which are addressed separately.
Cure this by implementing an explicit synchronization point right before
the AP reaches HLT. This guarantees that the AP has completed the full
stop proceedure.
- Fix the condition for WBINVD in stop_this_cpu().
The WBINVD in stop_this_cpu() is required for ensuring that when
switching to or from memory encryption no dirty data is left in the
cache lines which might cause a write back in the wrong more later.
This checks CPUID directly because the feature bit might have been
cleared due to a command line option.
But that CPUID check accesses leaf 0x8000001f::EAX unconditionally. Intel
CPUs return the content of the highest supported leaf when a non-existing
leaf is read, while AMD CPUs return all zeros for unsupported leafs.
So the result of the test on Intel CPUs is lottery and on AMD its just
correct by chance.
While harmless it's incorrect and causes the conditional wbinvd() to be
issued where not required, which caused the above issue to be unearthed.
- Make kexec() robust against AP code execution
Ashok observed triple faults when doing kexec() on a system which had
been booted with "nosmt".
It turned out that the SMT siblings which had been brought up partially
are parked in mwait_play_dead() to enable power savings.
mwait_play_dead() is monitoring the thread flags of the AP's idle task,
which has been chosen as it's unlikely to be written to.
But kexec() can overwrite the previous kernel text and data including
page tables etc. When it overwrites the cache lines monitored by an AP
that AP resumes execution after the MWAIT on eventually overwritten
text, stack and page tables, which obviously might end up in a triple
fault easily.
Make this more robust in several steps:
1) Use an explicit per CPU cache line for monitoring.
2) Write a command to these cache lines to kick APs out of MWAIT before
proceeding with kexec(), shutdown or reboot.
The APs confirm the wakeup by writing status back and then enter a
HLT loop.
3) If the system uses INIT/INIT/STARTUP for AP bringup, park the APs
in INIT state.
HLT is not a guarantee that an AP won't wake up and resume
execution. HLT is woken up by NMI and SMI. SMI puts the CPU back
into HLT (+/- firmware bugs), but NMI is delivered to the CPU which
executes the NMI handler. Same issue as the MWAIT scenario described
above.
Sending an INIT/INIT sequence to the APs puts them into wait for
STARTUP state, which is safe against NMI.
There is still an issue remaining which can't be fixed: #MCE
If the AP sits in HLT and receives a broadcast #MCE it will try to
handle it with the obvious consequences.
INIT/INIT clears CR4.MCE in the AP which will cause a broadcast #MCE to
shut down the machine.
So there is a choice between fire (HLT) and frying pan (INIT). Frying
pan has been chosen as it's at least preventing the NMI issue.
On systems which are not using INIT/INIT/STARTUP there is not much
which can be done right now, but at least the obvious and easy to
trigger MWAIT issue has been addressed.
-----BEGIN PGP SIGNATURE-----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=KgZ0
-----END PGP SIGNATURE-----
Merge tag 'x86-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 core updates from Thomas Gleixner:
"A set of fixes for kexec(), reboot and shutdown issues:
- Ensure that the WBINVD in stop_this_cpu() has been completed before
the control CPU proceedes.
stop_this_cpu() is used for kexec(), reboot and shutdown to park
the APs in a HLT loop.
The control CPU sends an IPI to the APs and waits for their CPU
online bits to be cleared. Once they all are marked "offline" it
proceeds.
But stop_this_cpu() clears the CPU online bit before issuing
WBINVD, which means there is no guarantee that the AP has reached
the HLT loop.
This was reported to cause intermittent reboot/shutdown failures
due to some dubious interaction with the firmware.
This is not only a problem of WBINVD. The code to actually "stop"
the CPU which runs between clearing the online bit and reaching the
HLT loop can cause large enough delays on its own (think
virtualization). That's especially dangerous for kexec() as kexec()
expects that all APs are in a safe state and not executing code
while the boot CPU jumps to the new kernel. There are more issues
vs kexec() which are addressed separately.
Cure this by implementing an explicit synchronization point right
before the AP reaches HLT. This guarantees that the AP has
completed the full stop proceedure.
- Fix the condition for WBINVD in stop_this_cpu().
The WBINVD in stop_this_cpu() is required for ensuring that when
switching to or from memory encryption no dirty data is left in the
cache lines which might cause a write back in the wrong more later.
This checks CPUID directly because the feature bit might have been
cleared due to a command line option.
But that CPUID check accesses leaf 0x8000001f::EAX unconditionally.
Intel CPUs return the content of the highest supported leaf when a
non-existing leaf is read, while AMD CPUs return all zeros for
unsupported leafs.
So the result of the test on Intel CPUs is lottery and on AMD its
just correct by chance.
While harmless it's incorrect and causes the conditional wbinvd()
to be issued where not required, which caused the above issue to be
unearthed.
- Make kexec() robust against AP code execution
Ashok observed triple faults when doing kexec() on a system which
had been booted with "nosmt".
It turned out that the SMT siblings which had been brought up
partially are parked in mwait_play_dead() to enable power savings.
mwait_play_dead() is monitoring the thread flags of the AP's idle
task, which has been chosen as it's unlikely to be written to.
But kexec() can overwrite the previous kernel text and data
including page tables etc. When it overwrites the cache lines
monitored by an AP that AP resumes execution after the MWAIT on
eventually overwritten text, stack and page tables, which obviously
might end up in a triple fault easily.
Make this more robust in several steps:
1) Use an explicit per CPU cache line for monitoring.
2) Write a command to these cache lines to kick APs out of MWAIT
before proceeding with kexec(), shutdown or reboot.
The APs confirm the wakeup by writing status back and then
enter a HLT loop.
3) If the system uses INIT/INIT/STARTUP for AP bringup, park the
APs in INIT state.
HLT is not a guarantee that an AP won't wake up and resume
execution. HLT is woken up by NMI and SMI. SMI puts the CPU
back into HLT (+/- firmware bugs), but NMI is delivered to the
CPU which executes the NMI handler. Same issue as the MWAIT
scenario described above.
Sending an INIT/INIT sequence to the APs puts them into wait
for STARTUP state, which is safe against NMI.
There is still an issue remaining which can't be fixed: #MCE
If the AP sits in HLT and receives a broadcast #MCE it will try to
handle it with the obvious consequences.
INIT/INIT clears CR4.MCE in the AP which will cause a broadcast
#MCE to shut down the machine.
So there is a choice between fire (HLT) and frying pan (INIT).
Frying pan has been chosen as it's at least preventing the NMI
issue.
On systems which are not using INIT/INIT/STARTUP there is not much
which can be done right now, but at least the obvious and easy to
trigger MWAIT issue has been addressed"
* tag 'x86-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/smp: Put CPUs into INIT on shutdown if possible
x86/smp: Split sending INIT IPI out into a helper function
x86/smp: Cure kexec() vs. mwait_play_dead() breakage
x86/smp: Use dedicated cache-line for mwait_play_dead()
x86/smp: Remove pointless wmb()s from native_stop_other_cpus()
x86/smp: Dont access non-existing CPUID leaf
x86/smp: Make stop_other_cpus() more robust
- Core:
- A set of fixes, cleanups and enhancements to the posix timer code:
- Prevent another possible live lock scenario in the exit() path,
which affects POSIX_CPU_TIMERS_TASK_WORK enabled architectures.
- Fix a loop termination issue which was reported syzcaller/KSAN in
the posix timer ID allocation code.
That triggered a deeper look into the posix-timer code which
unearthed more small issues.
- Add missing READ/WRITE_ONCE() annotations
- Fix or remove completely outdated comments
- Document places which are subtle and completely undocumented.
- Add missing hrtimer modes to the trace event decoder
- Small cleanups and enhancements all over the place
- Drivers:
- Rework the Hyper-V clocksource and sched clock setup code
- Remove a deprecated clocksource driver
- Small fixes and enhancements all over the place
-----BEGIN PGP SIGNATURE-----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=hRV9
-----END PGP SIGNATURE-----
Merge tag 'timers-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Time, timekeeping and related device driver updates:
Core:
- A set of fixes, cleanups and enhancements to the posix timer code:
- Prevent another possible live lock scenario in the exit() path,
which affects POSIX_CPU_TIMERS_TASK_WORK enabled architectures.
- Fix a loop termination issue which was reported syzcaller/KSAN
in the posix timer ID allocation code.
That triggered a deeper look into the posix-timer code which
unearthed more small issues.
- Add missing READ/WRITE_ONCE() annotations
- Fix or remove completely outdated comments
- Document places which are subtle and completely undocumented.
- Add missing hrtimer modes to the trace event decoder
- Small cleanups and enhancements all over the place
Drivers:
- Rework the Hyper-V clocksource and sched clock setup code
- Remove a deprecated clocksource driver
- Small fixes and enhancements all over the place"
* tag 'timers-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
clocksource/drivers/cadence-ttc: Fix memory leak in ttc_timer_probe
dt-bindings: timers: Add Ralink SoCs timer
clocksource/drivers/hyper-v: Rework clocksource and sched clock setup
dt-bindings: timer: brcm,kona-timer: convert to YAML
clocksource/drivers/imx-gpt: Fold <soc/imx/timer.h> into its only user
clk: imx: Drop inclusion of unused header <soc/imx/timer.h>
hrtimer: Add missing sparse annotations to hrtimer locking
clocksource/drivers/imx-gpt: Use only a single name for functions
clocksource/drivers/loongson1: Move PWM timer to clocksource framework
dt-bindings: timer: Add Loongson-1 clocksource
MIPS: Loongson32: Remove deprecated PWM timer clocksource
clocksource/drivers/ingenic-timer: Use pm_sleep_ptr() macro
tracing/timer: Add missing hrtimer modes to decode_hrtimer_mode().
posix-timers: Add sys_ni_posix_timers() prototype
tick/rcu: Fix bogus ratelimit condition
alarmtimer: Remove unnecessary (void *) cast
alarmtimer: Remove unnecessary initialization of variable 'ret'
posix-timers: Refer properly to CONFIG_HIGH_RES_TIMERS
posix-timers: Polish coding style in a few places
posix-timers: Remove pointless comments
...
- Parallel CPU bringup
The reason why people are interested in parallel bringup is to shorten
the (kexec) reboot time of cloud servers to reduce the downtime of the
VM tenants.
The current fully serialized bringup does the following per AP:
1) Prepare callbacks (allocate, intialize, create threads)
2) Kick the AP alive (e.g. INIT/SIPI on x86)
3) Wait for the AP to report alive state
4) Let the AP continue through the atomic bringup
5) Let the AP run the threaded bringup to full online state
There are two significant delays:
#3 The time for an AP to report alive state in start_secondary() on
x86 has been measured in the range between 350us and 3.5ms
depending on vendor and CPU type, BIOS microcode size etc.
#4 The atomic bringup does the microcode update. This has been
measured to take up to ~8ms on the primary threads depending on
the microcode patch size to apply.
On a two socket SKL server with 56 cores (112 threads) the boot CPU
spends on current mainline about 800ms busy waiting for the APs to come
up and apply microcode. That's more than 80% of the actual onlining
procedure.
This can be reduced significantly by splitting the bringup mechanism
into two parts:
1) Run the prepare callbacks and kick the AP alive for each AP which
needs to be brought up.
The APs wake up, do their firmware initialization and run the low
level kernel startup code including microcode loading in parallel
up to the first synchronization point. (#1 and #2 above)
2) Run the rest of the bringup code strictly serialized per CPU
(#3 - #5 above) as it's done today.
Parallelizing that stage of the CPU bringup might be possible in
theory, but it's questionable whether required surgery would be
justified for a pretty small gain.
If the system is large enough the first AP is already waiting at the
first synchronization point when the boot CPU finished the wake-up of
the last AP. That reduces the AP bringup time on that SKL from ~800ms
to ~80ms, i.e. by a factor ~10x.
The actual gain varies wildly depending on the system, CPU, microcode
patch size and other factors. There are some opportunities to reduce
the overhead further, but that needs some deep surgery in the x86 CPU
bringup code.
For now this is only enabled on x86, but the core functionality
obviously works for all SMP capable architectures.
- Enhancements for SMP function call tracing so it is possible to locate
the scheduling and the actual execution points. That allows to measure
IPI delivery time precisely.
-----BEGIN PGP SIGNATURE-----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=Y8if
-----END PGP SIGNATURE-----
Merge tag 'smp-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP updates from Thomas Gleixner:
"A large update for SMP management:
- Parallel CPU bringup
The reason why people are interested in parallel bringup is to
shorten the (kexec) reboot time of cloud servers to reduce the
downtime of the VM tenants.
The current fully serialized bringup does the following per AP:
1) Prepare callbacks (allocate, intialize, create threads)
2) Kick the AP alive (e.g. INIT/SIPI on x86)
3) Wait for the AP to report alive state
4) Let the AP continue through the atomic bringup
5) Let the AP run the threaded bringup to full online state
There are two significant delays:
#3 The time for an AP to report alive state in start_secondary()
on x86 has been measured in the range between 350us and 3.5ms
depending on vendor and CPU type, BIOS microcode size etc.
#4 The atomic bringup does the microcode update. This has been
measured to take up to ~8ms on the primary threads depending
on the microcode patch size to apply.
On a two socket SKL server with 56 cores (112 threads) the boot CPU
spends on current mainline about 800ms busy waiting for the APs to
come up and apply microcode. That's more than 80% of the actual
onlining procedure.
This can be reduced significantly by splitting the bringup
mechanism into two parts:
1) Run the prepare callbacks and kick the AP alive for each AP
which needs to be brought up.
The APs wake up, do their firmware initialization and run the
low level kernel startup code including microcode loading in
parallel up to the first synchronization point. (#1 and #2
above)
2) Run the rest of the bringup code strictly serialized per CPU
(#3 - #5 above) as it's done today.
Parallelizing that stage of the CPU bringup might be possible
in theory, but it's questionable whether required surgery
would be justified for a pretty small gain.
If the system is large enough the first AP is already waiting at
the first synchronization point when the boot CPU finished the
wake-up of the last AP. That reduces the AP bringup time on that
SKL from ~800ms to ~80ms, i.e. by a factor ~10x.
The actual gain varies wildly depending on the system, CPU,
microcode patch size and other factors. There are some
opportunities to reduce the overhead further, but that needs some
deep surgery in the x86 CPU bringup code.
For now this is only enabled on x86, but the core functionality
obviously works for all SMP capable architectures.
- Enhancements for SMP function call tracing so it is possible to
locate the scheduling and the actual execution points. That allows
to measure IPI delivery time precisely"
* tag 'smp-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip: (45 commits)
trace,smp: Add tracepoints for scheduling remotelly called functions
trace,smp: Add tracepoints around remotelly called functions
MAINTAINERS: Add CPU HOTPLUG entry
x86/smpboot: Fix the parallel bringup decision
x86/realmode: Make stack lock work in trampoline_compat()
x86/smp: Initialize cpu_primary_thread_mask late
cpu/hotplug: Fix off by one in cpuhp_bringup_mask()
x86/apic: Fix use of X{,2}APIC_ENABLE in asm with older binutils
x86/smpboot/64: Implement arch_cpuhp_init_parallel_bringup() and enable it
x86/smpboot: Support parallel startup of secondary CPUs
x86/smpboot: Implement a bit spinlock to protect the realmode stack
x86/apic: Save the APIC virtual base address
cpu/hotplug: Allow "parallel" bringup up to CPUHP_BP_KICK_AP_STATE
x86/apic: Provide cpu_primary_thread mask
x86/smpboot: Enable split CPU startup
cpu/hotplug: Provide a split up CPUHP_BRINGUP mechanism
cpu/hotplug: Reset task stack state in _cpu_up()
cpu/hotplug: Remove unused state functions
riscv: Switch to hotplug core state synchronization
parisc: Switch to hotplug core state synchronization
...
- Initialize FPU late.
Right now FPU is initialized very early during boot. There is no real
requirement to do so. The only requirement is to have it done before
alternatives are patched.
That's done in check_bugs() which does way more than what the function
name suggests.
So first rename check_bugs() to arch_cpu_finalize_init() which makes it
clear what this is about.
Move the invocation of arch_cpu_finalize_init() earlier in
start_kernel() as it has to be done before fork_init() which needs to
know the FPU register buffer size.
With those prerequisites the FPU initialization can be moved into
arch_cpu_finalize_init(), which removes it from the early and fragile
part of the x86 bringup.
-----BEGIN PGP SIGNATURE-----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=yxMj
-----END PGP SIGNATURE-----
Merge tag 'x86-boot-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Thomas Gleixner:
"Initialize FPU late.
Right now FPU is initialized very early during boot. There is no real
requirement to do so. The only requirement is to have it done before
alternatives are patched.
That's done in check_bugs() which does way more than what the function
name suggests.
So first rename check_bugs() to arch_cpu_finalize_init() which makes
it clear what this is about.
Move the invocation of arch_cpu_finalize_init() earlier in
start_kernel() as it has to be done before fork_init() which needs to
know the FPU register buffer size.
With those prerequisites the FPU initialization can be moved into
arch_cpu_finalize_init(), which removes it from the early and fragile
part of the x86 bringup"
* tag 'x86-boot-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mem_encrypt: Unbreak the AMD_MEM_ENCRYPT=n build
x86/fpu: Move FPU initialization into arch_cpu_finalize_init()
x86/fpu: Mark init functions __init
x86/fpu: Remove cpuinfo argument from init functions
x86/init: Initialize signal frame size late
init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init()
init: Invoke arch_cpu_finalize_init() earlier
init: Remove check_bugs() leftovers
um/cpu: Switch to arch_cpu_finalize_init()
sparc/cpu: Switch to arch_cpu_finalize_init()
sh/cpu: Switch to arch_cpu_finalize_init()
mips/cpu: Switch to arch_cpu_finalize_init()
m68k/cpu: Switch to arch_cpu_finalize_init()
loongarch/cpu: Switch to arch_cpu_finalize_init()
ia64/cpu: Switch to arch_cpu_finalize_init()
ARM: cpu: Switch to arch_cpu_finalize_init()
x86/cpu: Switch to arch_cpu_finalize_init()
init: Provide arch_cpu_finalize_init()
Heiko Carstens