kselftest includes kernel uAPI headers with option:
-isystem $(top_srcdir)/usr/include
Include <asm/ptrace.h> in libc-gcs.c for the definition of struct
user_gcs from the uAPI headers, and remove the redundant definition in
gcs-util.h. This fixes a compilation error on systems where the
toolchain defines NT_ARM_GCS.
Fixes: a505a52b4e ("kselftest/arm64: Add a GCS test program built with the system libc")
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The function executes a CBEQ instruction which is valid if the CPU
supports the CMPBR extension. The CBEQ branches to skip the following
UDF instruction, and no SIGILL is generated. Otherwise, it will
generate a SIGILL.
Signed-off-by: Yifan Wu <wuyifan50@huawei.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The FEAT_SVE2p1 is indicated by ID_AA64ZFR0_EL1.SVEver. However,
the BFADD requires the FEAT_SVE_B16B16, which is indicated by
ID_AA64ZFR0_EL1.B16B16. This could cause the test to incorrectly
fail on a CPU that supports FEAT_SVE2.1 but not FEAT_SVE_B16B16.
LD1Q Gather load quadwords which is decoded from SVE encodings and
implied by FEAT_SVE2p1.
Fixes: c5195b027d ("kselftest/arm64: Add SVE 2.1 to hwcap test")
Signed-off-by: Yifan Wu <wuyifan50@huawei.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
When fp-pidbench was originally written SVE hardware was not widely
available so it was useful to run it in emulation and the default number
of loops was set very low, running for less than a second on actual
hardware. Now that SVE hardware is reasonably available it is very much
less interesting to use emulation, bump the default number of loops up to
even out a bit of the noise on real systems. On the machine I have to hand
this now takes about 15s which is still a toy microbenchmark but perhaps a
bit more useful.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Some applications use SVE intermittently, one common case being where SVE
is used during statup (eg, by ld.so) but then rarely if ever during the
main application runtime. Add a repeat of the no SVE loop after we've done
the SVE loops to fp-pidbench to capture results for that.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
The binary generated by check_hugetlb_options is missing in .gitignore
under the directory. Add it into the file so it won't be logged into
version control.
Signed-off-by: I-Hsin Cheng <richard120310@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Add tests for FEAT_LS64. Issue related instructions if feature
presents, no SIGILL should be received. When such instructions
operate on Device memory or non-cacheable memory, we may received
a SIGBUS during the test (w/o FEAT_LS64WB). Just ignore it since
we only tested whether the instruction itself can be issued as
expected on platforms declaring the support of such features.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Will Deacon <will@kernel.org>
The my_syscall*() macros are internal implementation details of nolibc.
Nolibc also provides the regular syscall(2), which is also a macro
and directly expands to the correct my_syscall().
Use syscall() instead.
As a side-effect this fixes some return value checks, as my_syscall()
returns the raw value as set by the kernel and does not set errno.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
The top level kselftest Makefile supports an option FORCE_TARGETS which
causes any failures during the build to be propagated to the exit status
of the top level make, useful during build testing. Currently the recursion
done by the arm64 selftests ignores this option, meaning arm64 failures are
not reported via this mechanism. Add the logic to implement FORCE_TARGETS
so that it works for arm64.
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Will Deacon <will@kernel.org>
Pull non-MM updates from Andrew Morton:
- "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
fixes a build issue and does some cleanup in ib/sys_info.c
- "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
enhances the 64-bit math code on behalf of a PWM driver and beefs up
the test module for these library functions
- "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
makes BPF symbol names, sizes, and line numbers available to the GDB
debugger
- "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
adds a sysctl which can be used to cause additional info dumping when
the hung-task and lockup detectors fire
- "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
adds a general base64 encoder/decoder to lib/ and migrates several
users away from their private implementations
- "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
makes TCP a little faster
- "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
reworks the KEXEC Handover interfaces in preparation for Live Update
Orchestrator (LUO), and possibly for other future clients
- "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
increases the flexibility of KEXEC Handover. Also preparation for LUO
- "Live Update Orchestrator" (Pasha Tatashin)
is a major new feature targeted at cloud environments. Quoting the
cover letter:
This series introduces the Live Update Orchestrator, a kernel
subsystem designed to facilitate live kernel updates using a
kexec-based reboot. This capability is critical for cloud
environments, allowing hypervisors to be updated with minimal
downtime for running virtual machines. LUO achieves this by
preserving the state of selected resources, such as memory,
devices and their dependencies, across the kernel transition.
As a key feature, this series includes support for preserving
memfd file descriptors, which allows critical in-memory data, such
as guest RAM or any other large memory region, to be maintained in
RAM across the kexec reboot.
Mike Rappaport merits a mention here, for his extensive review and
testing work.
- "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
moves the kexec and kdump sysfs entries from /sys/kernel/ to
/sys/kernel/kexec/ and adds back-compatibility symlinks which can
hopefully be removed one day
- "kho: fixes for vmalloc restoration" (Mike Rapoport)
fixes a BUG which was being hit during KHO restoration of vmalloc()
regions
* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
calibrate: update header inclusion
Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
vmcoreinfo: track and log recoverable hardware errors
kho: fix restoring of contiguous ranges of order-0 pages
kho: kho_restore_vmalloc: fix initialization of pages array
MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
init: replace simple_strtoul with kstrtoul to improve lpj_setup
KHO: fix boot failure due to kmemleak access to non-PRESENT pages
Documentation/ABI: new kexec and kdump sysfs interface
Documentation/ABI: mark old kexec sysfs deprecated
kexec: move sysfs entries to /sys/kernel/kexec
test_kho: always print restore status
kho: free chunks using free_page() instead of kfree()
selftests/liveupdate: add kexec test for multiple and empty sessions
selftests/liveupdate: add simple kexec-based selftest for LUO
selftests/liveupdate: add userspace API selftests
docs: add documentation for memfd preservation via LUO
mm: memfd_luo: allow preserving memfd
liveupdate: luo_file: add private argument to store runtime state
mm: shmem: export some functions to internal.h
...
* arm64/for-next/perf:
perf: arm_spe: Add support for filtering on data source
perf: Add perf_event_attr::config4
perf/imx_ddr: Add support for PMU in DB (system interconnects)
perf/imx_ddr: Get and enable optional clks
perf/imx_ddr: Move ida_alloc() from ddr_perf_init() to ddr_perf_probe()
dt-bindings: perf: fsl-imx-ddr: Add compatible string for i.MX8QM, i.MX8QXP and i.MX8DXL
arch_topology: Provide a stub topology_core_has_smt() for !CONFIG_GENERIC_ARCH_TOPOLOGY
perf/arm-ni: Fix and optimise register offset calculation
perf: arm_pmuv3: Add new Cortex and C1 CPU PMUs
perf: arm_cspmu: fix error handling in arm_cspmu_impl_unregister()
perf/arm-ni: Add NoC S3 support
perf/arm_cspmu: nvidia: Add pmevfiltr2 support
perf/arm_cspmu: nvidia: Add revision id matching
perf/arm_cspmu: Add pmpidr support
perf/arm_cspmu: Add callback to reset filter config
perf: arm_pmuv3: Don't use PMCCNTR_EL0 on SMT cores
* for-next/misc:
: Miscellaneous patches
arm64: atomics: lse: Remove unused parameters from ATOMIC_FETCH_OP_AND macros
arm64: remove duplicate ARCH_HAS_MEM_ENCRYPT
arm64: mm: use untagged address to calculate page index
arm64: mm: make linear mapping permission update more robust for patial range
arm64/mm: Elide TLB flush in certain pte protection transitions
arm64/mm: Rename try_pgd_pgtable_alloc_init_mm
arm64/mm: Allow __create_pgd_mapping() to propagate pgtable_alloc() errors
arm64: add unlikely hint to MTE async fault check in el0_svc_common
arm64: acpi: add newline to deferred APEI warning
arm64: entry: Clean out some indirection
arm64/mm: Ensure PGD_SIZE is aligned to 64 bytes when PA_BITS = 52
arm64/mm: Drop cpu_set_[default|idmap]_tcr_t0sz()
arm64: remove unused ARCH_PFN_OFFSET
arm64: use SOFTIRQ_ON_OWN_STACK for enabling softirq stack
arm64: Remove assertion on CONFIG_VMAP_STACK
* for-next/kselftest:
: arm64 kselftest patches
kselftest/arm64: Align zt-test register dumps
* for-next/efi-preempt:
: arm64: Make EFI calls preemptible
arm64/efi: Call EFI runtime services without disabling preemption
arm64/efi: Move uaccess en/disable out of efi_set_pgd()
arm64/efi: Drop efi_rt_lock spinlock from EFI arch wrapper
arm64/fpsimd: Permit kernel mode NEON with IRQs off
arm64/fpsimd: Don't warn when EFI execution context is preemptible
efi/runtime-wrappers: Keep track of the efi_runtime_lock owner
efi: Add missing static initializer for efi_mm::cpus_allowed_lock
* for-next/assembler-macro:
: arm64: Replace __ASSEMBLY__ with __ASSEMBLER__ in headers
arm64: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers
arm64: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers
* for-next/typos:
: Random typo/spelling fixes
arm64: Fix double word in comments
arm64: Fix typos and spelling errors in comments
* for-next/sme-ptrace-disable:
: Support disabling streaming mode via ptrace on SME only systems
kselftest/arm64: Cover disabling streaming mode without SVE in fp-ptrace
kselftst/arm64: Test NT_ARM_SVE FPSIMD format writes on non-SVE systems
arm64/sme: Support disabling streaming mode via ptrace on SME only systems
* for-next/local-tlbi-page-reused:
: arm64, mm: avoid TLBI broadcast if page reused in write fault
arm64, tlbflush: don't TLBI broadcast if page reused in write fault
mm: add spurious fault fixing support for huge pmd
* for-next/mpam: (34 commits)
: Basic Arm MPAM driver (more to follow)
MAINTAINERS: new entry for MPAM Driver
arm_mpam: Add kunit tests for props_mismatch()
arm_mpam: Add kunit test for bitmap reset
arm_mpam: Add helper to reset saved mbwu state
arm_mpam: Use long MBWU counters if supported
arm_mpam: Probe for long/lwd mbwu counters
arm_mpam: Consider overflow in bandwidth counter state
arm_mpam: Track bandwidth counter state for power management
arm_mpam: Add mpam_msmon_read() to read monitor value
arm_mpam: Add helpers to allocate monitors
arm_mpam: Probe and reset the rest of the features
arm_mpam: Allow configuration to be applied and restored during cpu online
arm_mpam: Use a static key to indicate when mpam is enabled
arm_mpam: Register and enable IRQs
arm_mpam: Extend reset logic to allow devices to be reset any time
arm_mpam: Add a helper to touch an MSC from any CPU
arm_mpam: Reset MSC controls from cpuhp callbacks
arm_mpam: Merge supported features during mpam_enable() into mpam_class
arm_mpam: Probe the hardware features resctrl supports
arm_mpam: Add helpers for managing the locking around the mon_sel registers
...
* for-next/acpi:
: arm64 acpi updates
ACPI: GTDT: Get rid of acpi_arch_timer_mem_init()
* for-next/documentation:
: arm64 Documentation updates
Documentation/arm64: Fix the typo of register names
On a system which support SME but not SVE we can now disable streaming mode
via ptrace by writing FPSIMD formatted data through NT_ARM_SVE with a VL of
0. Extend fp-ptrace to cover rather than skip these cases, relax the check
for SVE writes of FPSIMD format data to not skip if SME is supported and
accept 0 as the VL when performing the ptrace write.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
In order to allow exiting streaming mode on systems with SME but not SVE
we allow writes of FPSIMD format data via NT_ARM_SVE even when SVE is not
supported, add a test case that covers this to sve-ptrace.
We do not support reads.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The zt-test output is awkward to read, as the 'Expected' value isn't
dumped on its own line and isn't aligned with the 'Got' value beneath.
For example:
Mismatch: PID=5281, iteration=3270249 Expected [00a1146901a1146902a1146903a1146904a1146905a1146906a1146907a1146908a1146909a114690aa114690ba114690ca114690da114690ea114690fa11469]
Got [00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000]
SVCR: 2
Add a newline, matching the other FPSIMD/SVE/SME tests, so that we get
output that can be read more easily:
Mismatch: PID=5281, iteration=3270249
Expected [00a1146901a1146902a1146903a1146904a1146905a1146906a1146907a1146908a1146909a114690aa114690ba114690ca114690da114690ea114690fa11469]
Got [00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000]
SVCR: 2
Admittedly this isn't all that important when the 'Got' value is all
zeroes, but otherwise this would be a major help for identifying which
portion of the 'Got' value is not as expected.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kselftest@vger.kernel.org
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Pull nolibc updates from Thomas Weißschuh:
"Only small bugfixes and cleanups"
* tag 'nolibc-20250928-for-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc:
tools/nolibc: add stdbool.h to nolibc includes
tools/nolibc: make time_t robust if __kernel_old_time_t is missing in host headers
selftests/nolibc: remove outdated comment about construct order
selftests/nolibc: fix EXPECT_NZ macro
tools/nolibc: drop wait4() support
kselftest/arm64: tpidr2: Switch to waitpid() over wait4()
tools/nolibc: fold llseek fallback into lseek()
tools/nolibc: remove __nolibc_enosys() fallback from fork functions
tools/nolibc: remove __nolibc_enosys() fallback from dup2()
tools/nolibc: remove __nolibc_enosys() fallback from *at() functions
tools/nolibc: remove __nolibc_enosys() fallback from time64-related functions
tools/nolibc: use tabs instead of spaces for indentation
tools/nolibc: avoid error in dup2() if old fd equals new fd
selftests/nolibc: always compile the kernel with GCC
selftests/nolibc: don't pass CC to toplevel Makefile
selftests/nolibc: deduplicate invocations of toplevel Makefile
selftests/nolibc: be more specific about variables affecting nolibc-test
tools/nolibc: fix error return value of clock_nanosleep()
* for-next/selftests:
kselftest/arm64: Add lsfe to the hwcaps test
kselftest/arm64: Check that unsupported regsets fail in sve-ptrace
kselftest/arm64: Verify that we reject out of bounds VLs in sve-ptrace
kselftest/arm64/gcs/basic-gcs: Respect parent directory CFLAGS
selftests/arm64: Fix grammatical error in string literals
kselftest/arm64: Add parentheses around sizeof for clarity
kselftest/arm64: Supress warning and improve readability
kselftest/arm64: Remove extra blank line
kselftest/arm64/gcs: Use nolibc's getauxval()
kselftest/arm64/gcs: Correctly check return value when disabling GCS
selftests: arm64: Fix -Waddress warning in tpidr2 test
kselftest/arm64: Log error codes in sve-ptrace
selftests: arm64: Check fread return value in exec_target
This feature has no traps associated with it so the SIGILL is not reliable.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Add a test which verifies that NT_ARM_SVE and NT_ARM_SSVE reads and writes
are rejected as expected when the relevant architecture feature is not
supported.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
We do not currently have a test that asserts that we reject attempts to set
a vector length smaller than SVE_VL_MIN or larger than SVE_VL_MAX, add one
since that is our current behaviour.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
basic-gcs has it's own make rule to handle the special compiler
invocation to build against nolibc. This rule does not respect the
$(CFLAGS) passed by the Makefile from the parent directory.
However these $(CFLAGS) set up the include path to include the UAPI
headers from the current kernel.
Due to this the asm/hwcap.h header is used from the toolchain instead of
the UAPI and the definition of HWCAP_GCS is not found.
Restructure the rule for basic-gcs to respect the $(CFLAGS).
Also drop those options which are already provided by $(CFLAGS).
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Closes: https://lore.kernel.org/lkml/CA+G9fYv77X+kKz2YT6xw7=9UrrotTbQ6fgNac7oohOg8BgGvtw@mail.gmail.com/
Fixes: a985fe6383 ("kselftest/arm64/gcs: Use nolibc's getauxval()")
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
Fix grammatical error in <past tense verb> + <infinitive>
construct related to memory allocation checks.
In essence change "Failed to allocated" to "Failed to allocate".
Signed-off-by: Nikola Z. Ivanov <zlatistiv@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Added parentheses around sizeof to make the expression clearer
and improve readability. This change has no functional impact.
```
[command]
./scripts/checkpatch.pl tools/testing/selftests/arm64/fp/sve-ptrace.c
[output]
WARNING: sizeof *sve should be sizeof(*sve)
```
Signed-off-by: Vivek Yadav <vivekyadav1207731111@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
The comment was correct, but `checkpatch` script flagged it with a warning
as shown in the output section. The comment is slightly modified
to improve readability, which also suppresses the warning.
```
[command]
./script/checkpatch.pl --strict -f tools/testing/selftests/arm64/fp/fp-stress.c
[output]
WARNING: Possible repeated word: 'on'
```
Signed-off-by: Vivek Yadav <vivekyadav1207731111@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
Leo YanandCatalin Marinas
Yifan WuandCatalin Marinas
Mark BrownandWill Deacon
I-Hsin ChengandWill Deacon
Yicong YangandWill Deacon
Thomas WeißschuhandWill Deacon
Linus Torvalds
Bala-Vignesh-ReddyandAndrew Morton
Mark RutlandandCatalin Marinas
Nikola Z. IvanovandWill Deacon
Vivek YadavandWill Deacon