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Commit 1cea5180f2f8 ("block: remove pktcdvd driver") left behind some
CONFIG_CONFIG_CDROM_PKTCDVD references in defconfigs. Remove them.
Signed-off-by: Catalin Iacob <iacobcatalin@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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CMP support was removed in commit 7fb6f7b0af67 ("MIPS: Remove
deprecated CONFIG_MIPS_CMP"), but a comment referring to it remained in
arch/mips/mm/c-r4k.c. Remove it.
Discovered while searching for CONFIG_* symbols referenced in code but
not defined in any Kconfig file.
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull x86 cpuid updates from Ingo Molnar:
- CPUID API updates (Ahmed S. Darwish):
- Introduce a centralized CPUID parser
- Introduce a centralized CPUID data model
- Introduce <asm/cpuid/leaf_types.h>
- Rename cpuid_leaf()/cpuid_subleaf() APIs
- treewide: Explicitly include the x86 CPUID headers
- Update to x86-cpuid-db v3.1 (Maciej Wieczor-Retman)
- Continued removal of pre-i586 support and related simplifications
(Ingo Molnar)
- Add Intel CPU model number for rugged Panther Lake (Tony Luck)
- Misc fixes, updates and cleanups by Arnd Bergmann, Chao Gao, Lukas
Bulwahn, Sohil Mehta, Maciej Wieczor-Retman.
* tag 'x86-cpu-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (25 commits)
x86/cpu: Make CONFIG_X86_CX8 unconditional
x86/cpu: Remove unused !CONFIG_X86_TSC code
x86/cpuid: Update bitfields to x86-cpuid-db v3.1
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v3.1
x86/cpu: Make CONFIG_X86_TSC unconditional
MAINTAINERS: Drop obsolete FPU EMULATOR section
x86/cpu: Fix a F00F bug warning and clean up surrounding code
x86/cpu: Add Intel CPU model number for rugged Panther Lake
x86/cpuid: Introduce a centralized CPUID parser
x86/cpu: Introduce a centralized CPUID data model
x86/cpuid: Introduce <asm/cpuid/leaf_types.h>
x86/cpuid: Rename cpuid_leaf()/cpuid_subleaf() APIs
x86/cpu: Do not include the CPUID API header in asm/processor.h
Documentation: core-api/cpu_hotplug: Remove stale cpu0_hotplug docs
x86/cpu, cpufreq: Remove AMD ELAN support
x86/fpu: Remove the math-emu/ FPU emulation library
x86/fpu: Remove the 'no387' boot option
x86/fpu: Remove MATH_EMULATION and related glue code
treewide: Explicitly include the x86 CPUID headers
x86/cpu: Remove the CONFIG_X86_INVD_BUG quirk
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull x86/msr updates from Ingo Molnar:
- Large series to reorganize the rdmsr/wrmsr APIs to remove
32-bit variants and convert to 64-bit variants (Juergen Gross)
- Fix W=1 warning (HyeongJun An)
* tag 'x86-msr-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
x86/msr: Remove wrmsrl()
x86/msr: Switch wrmsrl() users to wrmsrq()
x86/msr: Remove rdmsrl()
x86/msr: Switch rdmsrl() users to rdmsrq()
x86/msr: Remove wrmsr_safe_on_cpu()
x86/msr: Switch wrmsr_safe_on_cpu() users to wrmsrq_safe_on_cpu()
x86/msr: Remove rdmsr_safe_on_cpu()
x86/msr: Switch rdmsr_safe_on_cpu() users to rdmsrq_safe_on_cpu()
x86/msr: Don't use rdmsr_safe_on_cpu() in rdmsrq_safe_on_cpu()
x86/msr: Remove wrmsr_on_cpu()
x86/msr: Switch wrmsr_on_cpu() users to wrmsrq_on_cpu()
x86/msr: Remove rdmsr_on_cpu()
x86/msr: Switch rdmsr_on_cpu() users to rdmsrq_on_cpu()
x86/msr: Remove rdmsrl_on_cpu()
x86/msr: Switch rdmsrl_on_cpu() user to rdmsrq_on_cpu()
x86/process: Convert rdmsr() to rdmsrq() in arch_post_acpi_subsys_init() to address W=1 warning
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"SMP load-balancing updates:
- A large series to introduce infrastructure for cache-aware load
balancing, with the goal of co-locating tasks that share data
within the same Last Level Cache (LLC) domain. By improving cache
locality, the scheduler can reduce cache bouncing and cache misses,
ultimately improving data access efficiency.
Implemented by Chen Yu and Tim Chen, based on early prototype work
by Peter Zijlstra, with fixes by Jianyong Wu, Peter Zijlstra and
Shrikanth Hegde.
- A series to simplify CONFIG_SCHED_SMT ifdef usage (Shrikanth Hegde)
Fair scheduler updates:
- A series to improve SD_ASYM_CPUCAPACITY scheduling by introducing
SMT awareness (Andrea Righi, K Prateek Nayak)
- A series to optimize cfs_rq and sched_entity allocation for better
data locality (Zecheng Li)
- A preparatory series to change fair/cgroup scheduling to a single
runqueue, without the final change (Peter Zijlstra)
- Auto-manage ext/fair dl_server bandwidth (Andrea Righi)
- Fix cpu_util runnable_avg arithmetic (Hongyan Xia)
- Optimize update_tg_load_avg()'s rate-limiting code (Rik van Riel)
- Allow account_cfs_rq_runtime() to throttle current hierarchy
(K Prateek Nayak)
- Update util_est after updating util_avg during dequeue, to fix the
util signal update logic, which reduces signal noise (Vincent
Guittot)
Scheduler topology updates:
- Allow multiple domains to claim sched_domain_shared (K Prateek
Nayak)
- Add parameter to split LLC (Peter Zijlstra)
Core scheduler updates:
- Use trace_call__<tp>() to save a static branch (Gabriele Monaco)
Scheduler statistics updates:
- Drop now-stale mul_u64_u64_div_u64() cputime over-approximation
guard (Nicolas Pitre)
Deadline scheduler updates:
- Reject debugfs dl_server writes for offline CPUs (Andrea Righi)
- Fix replenishment logic for non-deferred servers (Yuri Andriaccio)
RT scheduling updates:
- Turn RT_PUSH_IPI default off for non PREEMPT_RT (Steven Rostedt)
- Update default bandwidth for real-time tasks to 1.0 (Yuri
Andriaccio)
Proxy scheduling updates:
- A series to implement Optimized Donor Migration for Proxy Execution
(John Stultz, Peter Zijlstra)
- Various proxy scheduling cleanups and fixes (Peter Zijlstra,
K Prateek Nayak)
Misc fixes, improvements and cleanups by Aaron Lu, Andrea Righi,
Zenghui Yu, Chen Yu, Guanyou.Chen, John Stultz, Shrikanth Hegde,
Peter Zijlstra, Liang Luo and Yiyang Chen"
* tag 'sched-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (91 commits)
sched/fair: Fix newidle vs core-sched
sched/deadline: Use task_on_rq_migrating() helper
sched/core: Combine separate 'else' and 'if' statements
sched/fair: Fix cpu_util runnable_avg arithmetic
sched/fair: Unify cfs_rq throttling via account_cfs_rq_runtime()
sched/fair: Move the throttled tasks to a local list in tg_unthrottle_up()
sched/fair: Call update_curr() before unthrottling the hierarchy
sched/fair: Use throttled_csd_list for local unthrottle
sched/fair: Convert cfs bandwidth throttling to use guards
sched/fair: Allocate cfs_tg_state with percpu allocator
sched/fair: Remove task_group->se pointer array
sched/fair: Co-locate cfs_rq and sched_entity in cfs_tg_state
sched: restore timer_slack_ns when resetting RT policy on fork
MAINTAINERS: Fix spelling mistake in Peter's name
sched: Simplify ttwu_runnable()
sched/proxy: Remove superfluous clear_task_blocked_in()
sched/proxy: Remove PROXY_WAKING
sched/proxy: Switch proxy to use p->is_blocked
sched/proxy: Only return migrate when needed
sched: Be more strict about p->is_blocked
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Core perf code updates:
- Reveal PMU type in fdinfo (Chun-Tse Shao)
Intel CPU PMU driver updates:
- Fix various inaccurate hard-coded event configurations (Dapeng Mi)
Intel uncore PMU driver updates (Zide Chen):
- Fix discovery unit lookup bug for multi-die systems
- Guard against invalid box control address
- Fix PCI device refcount leak in UPI discovery
- Defer ADL global PMON enable to enable_box() to save power
- Fix uncore_die_to_cpu() for offline dies
- Implement global init callback for GNR uncore
AMD CPU PMU driver updates:
- Always use the NMI latency mitigation (Sandipan Das)
AMD uncore PMU driver updates:
- Use Node ID to identify DF and UMC domains (Sandipan Das)"
* tag 'perf-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (22 commits)
perf/x86/amd/uncore: Use Node ID to identify DF and UMC domains
perf: Reveal PMU type in fdinfo
perf/x86/intel/uncore: Implement global init callback for GNR uncore
perf/x86/intel/uncore: Fix uncore_die_to_cpu() for offline dies
perf/x86/intel/uncore: Move die_to_cpu() to uncore.c
perf/x86/intel/uncore: Defer ADL global PMON enable to enable_box()
perf/x86/intel/uncore: Fix PCI device refcount leak in UPI discovery
perf/x86/intel/uncore: Guard against invalid box control address
perf/x86/intel/uncore: Fix discovery unit lookup for multi-die systems
perf/x86/amd/core: Always use the NMI latency mitigation
perf/x86/intel: Update event constraints and cache_extra_regsfor CWF
perf/x86/intel: Update event constraints and cache_extra_regsfor SRF
perf/x86/intel: Update event constraints and cache_extra_regsfor NVL
perf/x86/intel: Update event constraints for PTL
perf/x86/intel: Update event constraints and cache_extra_regsfor ARL
perf/x86/intel: Update event constraints and cache_extra_regsfor LNL
perf/x86/intel: Update event constraints and cache_extra_regsfor MTL
perf/x86/intel: Update event constraints and cache_extra_regsfor ADL
perf/x86/intel: Update event constraints for DMR
perf/x86/intel: Update event constraints and cache_extra_regsfor SPR
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- A large series of KLP fixes and improvements, in preparation of the
arm64 port (Josh Poimboeuf)
- Fix a number of bugs and issues on specific distro, LTO, FineIBT and
kCFI configs (Josh Poimboeuf)
- Misc other fixes by Josh Poimboeuf and Joe Lawrence
* tag 'objtool-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (53 commits)
objtool/klp: Cache dont_correlate() result
objtool: Improve and simplify prefix symbol detection
objtool/klp: Fix kCFI prefix finding/cloning
objtool: Grow __cfi_* prefix symbols for all CFI+CALL_PADDING
objtool/klp: Fix position-dependent checksums for non-relocated jumps/calls
objtool: Add insn_sym() helper
objtool/klp: Add correlation debugging output
objtool/klp: Rewrite symbol correlation algorithm
objtool/klp: Calculate object checksums
klp-build: Validate short-circuit prerequisites
objtool/klp: Remove "objtool --checksum"
klp-build: Use "objtool klp checksum" subcommand
objtool/klp: Add "objtool klp checksum" subcommand
objtool: Consolidate file decoding into decode_file()
objtool/klp: Extricate checksum calculation from validate_branch()
objtool: Add is_cold_func() helper
objtool: Add is_alias_sym() helper
objtool/klp: Handle Clang .data..Lanon anonymous data sections
objtool/klp: Create empty checksum sections for function-less object files
objtool: Include libsubcmd headers directly from source tree
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Futex updates:
- Optimize futex hash bucket access patterns (Peter Zijlstra)
- Large series to address the robust futex unlock race for real, by
Thomas Gleixner:
"The robust futex unlock mechanism is racy in respect to the
clearing of the robust_list_head::list_op_pending pointer because
unlock and clearing the pointer are not atomic.
The race window is between the unlock and clearing the pending op
pointer. If the task is forced to exit in this window, exit will
access a potentially invalid pending op pointer when cleaning up
the robust list.
That happens if another task manages to unmap the object
containing the lock before the cleanup, which results in an UAF.
In the worst case this UAF can lead to memory corruption when
unrelated content has been mapped to the same address by the time
the access happens.
User space can't solve this problem without help from the kernel.
This series provides the kernel side infrastructure to help it
along:
1) Combined unlock, pointer clearing, wake-up for the
contended case
2) VDSO based unlock and pointer clearing helpers with a
fix-up function in the kernel when user space was interrupted
within the critical section.
... with help by André Almeida:
- Add a note about robust list race condition (André Almeida)
- Add self-tests for robust release operations (André Almeida)
Context analysis updates:
- Implement context analysis for 'struct rt_mutex'. (Bart Van Assche)
- Bump required Clang version to 23 (Marco Elver)
Guard infrastructure updates:
- Series to remove NULL check from unconditional guards (Dmitry
Ilvokhin)
Lockdep updates:
- Restore self-test migrate_disable() and sched_rt_mutex state on
PREEMPT_RT (Karl Mehltretter)
Membarriers updates:
- Use per-CPU mutexes for targeted commands (Aniket Gattani)
- Modernize membarrier_global_expedited with cleanup guards (Aniket
Gattani)
- Add rseq stress test for CFS throttle interactions (Aniket Gattani)
percpu-rwsems updates:
- Extract __percpu_up_read() to optimize inlining overhead (Dmitry
Ilvokhin)
Seqlocks updates:
- Allow UBSAN_ALIGNMENT to fail optimizing (Heiko Carstens)
Lock tracing:
- Add contended_release tracepoint to sleepable locks such as
mutexes, percpu-rwsems, rtmutexes, rwsems and semaphores (Dmitry
Ilvokhin)
MAINTAINERS updates:
- MAINTAINERS: Add RUST [SYNC] entry (Boqun Feng)
Misc updates and fixes by Randy Dunlap, YE WEI-HONG, Fabricio Parra,
Dmitry Ilvokhin and Peter Zijlstra"
* tag 'locking-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (36 commits)
locking: Add contended_release tracepoint to sleepable locks
locking/percpu-rwsem: Extract __percpu_up_read()
tracing/lock: Remove unnecessary linux/sched.h include
futex: Optimize futex hash bucket access patterns
rust: sync: completion: Mark inline complete_all and wait_for_completion
MAINTAINERS: Add RUST [SYNC] entry
cleanup: Specify nonnull argument index
selftests: futex: Add tests for robust release operations
Documentation: futex: Add a note about robust list race condition
x86/vdso: Implement __vdso_futex_robust_try_unlock()
x86/vdso: Prepare for robust futex unlock support
futex: Provide infrastructure to plug the non contended robust futex unlock race
futex: Add robust futex unlock IP range
futex: Add support for unlocking robust futexes
futex: Cleanup UAPI defines
x86: Select ARCH_MEMORY_ORDER_TSO
uaccess: Provide unsafe_atomic_store_release_user()
futex: Provide UABI defines for robust list entry modifiers
futex: Move futex related mm_struct data into a struct
futex: Make futex_mm_init() void
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull vdso updates from Thomas Gleixner:
- Remove the redundant CONFIG_GENERIC_TIME_VSYSCALL after converting
the remaining users over.
- Rework and sanitize the MIPS VDSO handling, so it does not handle the
time related VDSO if there is no VDSO capable clocksource available.
Also stop mapping VDSO data pages unconditionally even if there is no
usage possible.
* tag 'timers-vdso-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
MIPS: VDSO: Fold MIPS_CLOCK_VSYSCALL into MIPS_GENERIC_GETTIMEOFDAY
MIPS: VDSO: Gate microMIPS restriction on GCC version
MIPS: VDSO: Fold MIPS_DISABLE_VDSO into MIPS_GENERIC_GETTIMEOFDAY
clocksource/drivers/mips-gic-timer: Only use VDSO_CLOCKMODE_GIC when it is a available
MIPS: csrc-r4k: Only use VDSO_CLOCKMODE_R4K when it is a available
MIPS: VDSO: Only map the data pages when the vDSO is used
MIPS: Introduce Kconfig MIPS_GENERIC_GETTIMEOFDAY
vdso/datastore: Always provide symbol declarations
MAINTAINERS: Add include/linux/vdso_datastore.h to vDSO block
vdso/gettimeofday: Rename __arch_get_vdso_u_timens_data()
vdso/treewide: Drop GENERIC_TIME_VSYSCALL
vdso/vsyscall: Gate update_vsyscall() behind CONFIG_GENERIC_GETTIMEOFDAY
riscv: vdso: Drop CONFIG_GENERIC_TIME_VSYSCALL guard around syscall fallbacks
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull timekeeping updates from Thomas Gleixner:
"Updates for NTP/timekeeping and PTP:
- Expand timekeeping snapshot mechanisms
The various snapshot functions are mostly used for PTP to collect
"atomic" snapshots of various involved clocks.
They lack support for the recently introduced AUX clocks and do not
provide the underlying counter value (e.g. TSC) to user space.
Exposing the counter value snapshot allows for better control and
steering.
Convert the hard wired ktime_get_snapshot() to take a clock ID,
which allows the caller to select the clock ID to be captured along
with CLOCK_MONONOTONIC_RAW. Additionally capture the underlying
hardware counter value and the clock source ID of the counter.
Expand the hardware based snapshot capture where devices provide a
mechanism to snapshot the hardware PTP clock and the system counter
(usually via PCI/PTM) to support AUX clocks and also provide the
captured counter value back to the caller and not only the clock
timestamps derived from it.
- Add a new optional read_snapshot() callback to clocksources
That is required to capture atomic snapshots from clocksources
which are derived from TSC with a scaling mechanism (e.g. Hyper-V,
KVMclock).
The value pair is handed back in the snapshot structure to the
callers, so they can do the necessary correlations in a more
precise way.
This touches usage sites of the affected functions and data structure
all over the tree, but stays fully backwards compatible for the
existing user space exposed interfaces. New PTP IOCTLs will provide
access to the extended functionality in later kernel versions"
* tag 'timers-ptp-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (28 commits)
ptp: vmclock: Use hw_cycles from snapshot for precise TSC pairing
x86/kvmclock: Implement read_snapshot() for kvmclock clocksource
clocksource/hyperv: Implement read_snapshot() for TSC page clocksource
timekeeping: Add clocksource read_snapshot() method and hw_cycles to snapshot
ptp: Switch to ktime_get_snapshot_id() for pre/post timestamps
timekeeping: Add support for AUX clock cross timestamping
timekeeping: Remove system_device_crosststamp::sys_realtime
ALSA: hda/common: Use system_device_crosststamp::sys_systime
wifi: iwlwifi: Use system_device_crosststamp::sys_systime
ptp: Use system_device_crosststamp::sys_systime
timekeeping: Prepare for cross timestamps on arbitrary clock IDs
timekeeping: Remove ktime_get_snapshot()
virtio_rtc: Use provided clock ID for history snapshot
net/mlx5: Use provided clock ID for history snapshot
igc: Use provided clock ID for history snapshot
ice/ptp: Use provided clock ID for history snapshot
wifi: iwlwifi: Adopt PTP cross timestamps to core changes
timekeeping: Add CLOCK ID to system_device_crosststamp
timekeeping: Add system_counterval_t to struct system_device_crosststamp
timekeeping: Add CLOCK_AUX support for ktime_get_snapshot_id()
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull NOHZ updates from Thomas Gleixner:
- Fix a long standing TOCTOU in get_cpu_sleep_time_us()
- Make the CPU offline NOHZ handling more robust by disabling NOHZ on
the outgoing CPU early instead of creating unneeded state which needs
to be undone.
- Unify idle CPU time accounting instead of having two different
accounting mechanisms. These two different mechanisms are not really
independent, but the different properties can in the worst case cause
that gloabl idle time can be observed going backwards.
- Consolidate the idle/iowait time retrieval interfaces instead of
converting back and forth between them.
- Make idle interrupt time accounting more robust. The original code
assumes that interrupt time accouting is enabled and therefore stops
elapsing idle time while an interrupt is handled in NOHZ dyntick
state. That assumption is not correct as interrupt time accounting
can be disabled at compile and runtime.
- Fix an accounting error between dyntick idle time and dyntick idle
steal time. The stolen time is not accounted and therefore idle time
becomes inaccurate. The stolen time is now accounted after the fact
as there is no way to predict the steal time upfront.
* tag 'timers-nohz-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
sched/cputime: Handle dyntick-idle steal time correctly
sched/cputime: Handle idle irqtime gracefully
sched/cputime: Provide get_cpu_[idle|iowait]_time_us() off-case
tick/sched: Consolidate idle time fetching APIs
tick/sched: Account tickless idle cputime only when tick is stopped
tick/sched: Remove unused fields
tick/sched: Move dyntick-idle cputime accounting to cputime code
tick/sched: Remove nohz disabled special case in cputime fetch
tick/sched: Unify idle cputime accounting
s390/time: Prepare to stop elapsing in dynticks-idle
powerpc/time: Prepare to stop elapsing in dynticks-idle
sched/cputime: Correctly support generic vtime idle time
sched/cputime: Remove superfluous and error prone kcpustat_field() parameter
sched/idle: Handle offlining first in idle loop
tick/sched: Fix TOCTOU in nohz idle time fetch
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led_proc_write() duplicates up to LED_MAX_LENGTH bytes with
memdup_user_nul() and then unconditionally inspects buf[count - 1] to
strip a trailing newline. A zero-length write therefore reads one byte
before the duplicated buffer.
The previous version rejected empty writes, but empty input already falls
through to the existing default case and turns the LED off like any other
unrecognized string. Preserve that behavior and only skip the newline
trim when there is no input byte to inspect.
Fixes: ee1858d3122d ("[SPARC]: Add sun4m LED driver.")
Suggested-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
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Clang emits calls to mcount for -pg on sparc64, while the
existing ftrace support only exports the _mcount name. With
FUNCTION_TRACER enabled, modules can therefore keep relocations
against mcount and fail during modpost:
ERROR: modpost: "mcount" [arch/sparc/kernel/chmc.ko] undefined!
_mcount and mcount are aliases in arch/sparc/lib/mcount.S. Export
the plain mcount alias as well so Clang-built modules can resolve
their profiling call target.
Assisted-by: Codex:GPT-5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
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An LLVM=1 sparc64 allmodconfig enables COMPAT and then tries to
build the 32-bit vDSO. That path cannot be linked with ld.lld:
ld.lld: error: unknown emulation: elf32_sparc
ld.lld does not support the 32-bit SPARC ELF emulation used for
the compat vDSO, so keep COMPAT disabled when LLD is the linker.
This avoids selecting an unsupported build path while leaving the
existing GNU ld configuration unchanged.
Assisted-by: Codex:GPT-5.5
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/r/20260508000834.834824-1-rosenp@gmail.com
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull clocksource updates from Thomas Gleixner:
"Updates for clocksource/clockevent drivers:
- Add devm helpers for clocksources, which allows to simplify driver
teardown and probe failure handling.
- More module conversion work
- Update the support for the ARM EL2 virtual timer including the
required ACPI changes.
- Add clockevent and clocksource support for the TI Dual Mode Timer
- Fix the support for multiple watchdog instances in the TEGRA186
driver
- Add D1 timer support to the SUN5I driver
- The usual devicetree updates, cleanups and small fixes all over the
place"
* tag 'timers-clocksource-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (24 commits)
clocksource: move NXP timer selection to drivers/clocksource
clocksource/drivers/timer-tegra186: Reserve and service a kernel watchdog
clocksource/drivers/timer-tegra186: Register all accessible watchdog timers
clocksource/drivers/timer-tegra186: Correct num_wdts for Tegra186 and Tegra234
clocksource/drivers/timer-tegra186: Fix support for multiple watchdog instances
clocksource/drivers/timer-ti-dm: Add clockevent support
clocksource/drivers/timer-ti-dm: Add clocksource support
clocksource/drivers/timer-ti-dm: Fix property name in comment
dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description
clocksource/drivers/arm_arch_timer: Default to EL2 virtual timer when running VHE
ACPI: GTDT: Parse information related to the EL2 virtual timer
ACPI: GTDT: Account for GTDTv3 size when walking the platform timer descriptors
clocksource: Add devm_clocksource_register_*() helpers
clocksource/drivers/sun5i: Add D1 hstimer support
dt-bindings: timer: allwinner,sun5i-a13-hstimer: add H616 and D1
dt-bindings: timer: Add StarFive JHB100 clint
dt-bindings: timer: renesas,rz-mtu3: document RZ/{T2H,N2H}
dt-bindings: timer: renesas,rz-mtu3: Remove TCIU8 interrupt
dt-bindings: timer: Remove sifive,fine-ctr-bits property
clocksource/drivers/timer-of: Make the code compatible with modules
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull interrupt chip driver updates from Thomas Gleixner:
- Replace the support for the AST2700-A0 early silicon with a proper
driver for the final A2 production silicon
- Rename and rework the StarFive JH8100 interrupt controller for the
new JHB100 SoC as JH8100 was discontinued before production.
- Add support for Amlogic A9 SoCs to the meson-gpio interrupt
controller
- Expand the Econet interrupt controller driver to support MIPS 34Kc
Vectored External Interrupt Controller mode.
- Prevent a NULL pointer dereference in the GICv4 code as the vLPI code
blindly assumes that the ITS was populated. Add the missing sanity
check.
- Add support for software triggered and for error interrupts to the
Renesas RZ/T2H driver.
- Add interrupt redirection support for the loongarch architecture.
- Add multicore support to the Realtek RTL interrupt driver
- The usual updates, enhancements and fixes all over the place
* tag 'irq-drivers-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (32 commits)
irqchip/irq-realtek-rtl: Add multicore support
irqchip/irq-realtek-rtl: Add/simplify register helpers
irqchip/loongarch-ir: Add IR (interrupt redirection) irqchip support
irqchip/loongarch-avec: Return IRQ_SET_MASK_OK_DONE when keep affinity
irqchip/loongarch-avec: Prepare for interrupt redirection support
Docs/LoongArch: Add advanced extended IRQ model
irqchip/qcom-pdc: Use FIELD_GET() to extract bank index and bit position
irqchip/qcom-pdc: Add PDC_VERSION() macro to describe version register fields
irqchip/qcom-pdc: Tighten ioremap clamp to single DRV region size
irqchip/qcom-pdc: Split __pdc_enable_intr() into per-version helpers
irqchip/exynos-combiner: Remove useless spinlock
irqchip/renesas-rzt2h: Add error interrupts support
irqchip/renesas-rzt2h: Add software-triggered interrupts support
irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed
irqchip/gic-v3-its: Use FIELD_MODIFY()
irqchip/econet-en751221: Support MIPS 34Kc VEIC mode
dt-bindings: interrupt-controller: econet: Add CPU interrupt mapping
irqchip/meson-gpio: Add support for Amlogic A9 SoCs
dt-bindings: interrupt-controller: Add support for Amlogic A9 SoCs
irqchip/meson-gpio: Use the correct register in meson_s4_gpio_irq_set_type()
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip
Pull interrupt core updates from Thomas Gleixner:
- Rework of /proc/interrupt handling:
/proc/interrupts was subject to micro optimizations for a long time,
but most of the low hanging fruit was left on the table. This rework
addresses the major time consuming issues:
- Printing a long series of zeros one by one via a format string
instead of counting subsequent zeros and emitting a string
constant.
- Simplify and cache the conditions whether interrupts should be
printed
- Use a proper iteration over the interrupt descriptor xarray
instead of walking and testing one by one.
- Provide helper functions for the architecture code to emit the
architecture specific counters
- Convert the counter structure in x86 to an array, which
simplifies the output and add mechanisms to suppress unused
architecture interrupts, which just occupy space for nothing.
Adopt the new core mechanisms.
This adjusts the gdb scripts related to interrupt counter statistics
to work with the new mechanisms.
- Prevent a string overflow in the /proc/irq/$N/ directory name
creation code.
* tag 'irq-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
x86/irq: Add missing 's' back to thermal event printout
genirq/proc: Speed up /proc/interrupts iteration
genirq/proc: Runtime size the chip name
genirq: Expose irq_find_desc_at_or_after() in core code
genirq: Add rcuref count to struct irq_desc
genirq/proc: Increase default interrupt number precision to four
genirq: Calculate precision only when required
genirq: Cache the condition for /proc/interrupts exposure
genirq/manage: Make NMI cleanup RT safe
genirq: Expose nr_irqs in core code
scripts/gdb: Update x86 interrupts to the array based storage
x86/irq: Move IOAPIC misrouted and PIC/APIC error counts into irq_stats
x86/irq: Suppress unlikely interrupt stats by default
x86/irq: Make irqstats array based
genirq/proc: Utilize irq_desc::tot_count to avoid evaluation
genirq/proc: Avoid formatting zero counts in /proc/interrupts
x86/irq: Optimize interrupts decimals printing
genirq/proc: Size interrupt directory names for 10-digit interrupt numbers
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Outside the IOPL emulation path, the IO bitmap is always expected
to be allocated when TIF_IO_BITMAP is set. The paranoid WARN_ON_ONCE()
handles the case where the flag and the pointer got out of sync.
In this theoretical scenario, which presumes some other bug in the
code that triggers the WARN_ON_ONCe(), return early, instead of
continuing and dereferencing a NULL pointer.
[ mingo: Clarified the changelog. ]
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Link: https://patch.msgid.link/20260615070115.4720-1-lirongqing@baidu.com
|
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gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Deferred probe:
- Fix race where deferred probe timeout work could be permanently
canceled by using mod_delayed_work()
- Fix missing jiffies conversion in deferred_probe_extend_timeout()
- Guard timeout extension with delayed_work_pending() to prevent
premature firing
- Use system_percpu_wq instead of the deprecated system_wq
- Update deferred_probe_timeout documentation
device:
- Replace direct struct device bitfield access (can_match, dma_iommu,
dma_skip_sync, dma_ops_bypass, state_synced, dma_coherent,
of_node_reused, offline, offline_disabled) with flag-based
accessors using bit operations
- Reject devices with unregistered buses
- Delete unused DEVICE_ATTR_PREALLOC()
- Add low-level device attribute macros with const show/store
callbacks, allowing device attributes to reside in read-only memory
- Move core device attributes to read-only memory
- Constify group array pointers in driver_add_groups() /
driver_remove_groups(), struct bus_type, and struct device_driver
device property:
- Fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
- Initialize all fields of fwnode_handle in fwnode_init()
- Provide swnode_get()/swnode_put() wrappers around kobject_get/put()
- Allow passing struct software_node_ref_args pointers directly to
PROPERTY_ENTRY_REF()
driver_override:
- Migrate amba, cdx, vmbus, and rpmsg to the generic driver_override
infrastructure, fixing a UAF from unsynchronized access to
driver_override in bus match() callbacks
- Remove the now-unused driver_set_override()
firmware loader:
- Fix recursive lock deadlock in device_cache_fw_images() when async
work falls back to synchronous execution
- Fix device reference leak in firmware_upload_register()
platform:
- Pass KBUILD_MODNAME through the platform driver registration macro
to create module symlinks in sysfs for built-in drivers; move
module_kset initialization to a pure_initcall and tegra cbb
registration to core_initcall to ensure correct ordering
- Pass THIS_MODULE implicitly through a coresight_init_driver() macro
sysfs:
- Upgrade OOB write detection in sysfs_kf_seq_show() from printk to
WARN
- Add return value clamping to sysfs_kf_read()
Rust:
- ACPI:
Fix missing match data for PRP0001 by exporting
acpi_of_match_device()
- Auxiliary:
Replace drvdata() with dedicated registration data on
auxiliary_device. drvdata() exposed the driver's bus device private
data beyond the driver's own scope, creating ordering constraints
and forcing the data to outlive all registrations that access it.
Registration data is instead scoped structurally to the
Registration object, making lifecycle ordering enforced by
construction rather than convention.
- Rust-native device driver lifetimes (HRT):
Allow Rust device drivers to carry a lifetime parameter on their
bus device private data, tied to the device binding scope -- the
interval during which a bus device is bound to a driver. Device
resources like pci::Bar<'a> and IoMem<'a> can be stored directly in
the driver's bus device private data with a lifetime bounded by the
binding scope, so the compiler enforces at build time that they do
not outlive the binding. This removes Devres indirection from every
access site and eliminates try_access() failure paths in
destructors.
Bus driver traits use a Generic Associated Type (GAT) Data<'bound>
to introduce the lifetime on the private data, rather than
parameterizing the Driver trait itself. Auxiliary registration
data, where the lifetime is not introduced by a trait callback but
must be threaded through Registration, uses the ForLt trait (a
type-level abstraction for types generic over a lifetime).
Misc:
- Fix DT overlayed devices not probing by reverting the broken
treewide overlay fix and re-running fw_devlink consumer pickup when
an overlay is applied to a bound device
- Use root_device_register() for faux bus root device; add sanity
check for failed bus init
- Fix dev_has_sync_state() data race with READ_ONCE() and move it to
base.h
- Avoid spurious device_links warning when removing a device while
its supplier is unbinding
- Switch ISA bus to dynamic root device
- Fix suspicious RCU usage in kernfs_put()
- Remove devcoredump exit callback
- Constify devfreq_event_class"
* tag 'driver-core-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/driver-core/driver-core: (81 commits)
software node: allow passing reference args to PROPERTY_ENTRY_REF()
driver core: platform: set mod_name in driver registration
coresight: pass THIS_MODULE implicitly through a macro
kernel: param: initialize module_kset in a pure_initcall
soc/tegra: cbb: Move driver registration from pure_initcall to core_initcall
firmware_loader: Fix recursive lock in device_cache_fw_images()
driver core: Use system_percpu_wq instead of system_wq
driver core: remove driver_set_override()
rpmsg: use generic driver_override infrastructure
Drivers: hv: vmbus: use generic driver_override infrastructure
cdx: use generic driver_override infrastructure
amba: use generic driver_override infrastructure
rust: devres: add 'static bound to Devres<T>
samples: rust: rust_driver_auxiliary: showcase lifetime-bound registration data
rust: auxiliary: generalize Registration over ForLt
rust: types: add `ForLt` trait for higher-ranked lifetime support
gpu: nova-core: separate driver type from driver data
samples: rust: rust_driver_pci: use HRT lifetime for Bar
rust: io: make IoMem and ExclusiveIoMem lifetime-parameterized
rust: pci: make Bar lifetime-parameterized
...
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
- Several small cleanups of various Xen related drivers
(xen/platform-pci, xen-balloon, xenbus, xen/mcelog)
- Cleanup for Xen PV-mode related code (includes dropping the Xen
debugfs code)
- Drop the additional lazy mmu mode tracking done by Xen specific code
* tag 'for-linus-7.2-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/xenbus: Replace strcpy() with memcpy()
x86/xen: Replace generic lazy tracking with cpu specific one
x86/xen: Get rid of last XEN_LAZY_MMU uses
mm: Refactor lazy_mmu_mode_pause() and lazy_mmu_mode_resume()
x86/xen: Change interface of xen_mc_issue()
x86/xen: Drop lazy mode from trace entries
x86/xen: Remove Xen debugfs support
x86/xen: Cleanup Xen related trace points
x86/xen: Guard PV-only stuff in xen-ops.h with CONFIG_XEN_PV
xen: balloon: Replace sprintf() with sysfs_emit()
xen/mcelog: mark g_physinfo, ncpus and xen_mce_chrdev_device as __ro_after_init
xen: constify xsd_errors array
xen/platform-pci: Simplify initialization of pci_device_id array
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git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild / Kconfig updates from Nathan Chancellor:
"Kbuild:
- Remove broken module linking exclusion for BTF
- Add documentation around how offset header files work
- Include unstripped vDSO libraries in pacman packages
- Bump minimum version of LLVM for building the kernel to 17.0.1 and
clean up unnecessary workarounds
- Use a context manager in run-clang-tools
- Add dist macro value if present to release tag for RPM packages
- Detect and report truncated buf_printf() output in modpost
- Add __llvm_covfun and __llvm_covmap to section whitelist in modpost
- Support Clang's distributed ThinLTO mode
- Remove architecture specific configurations for AutoFDO and
Propeller to ease individual architecture maintenance
Kconfig:
- Add kconfig-sym-check target to look for dangling Kconfig symbol
references and invalid tristate literal values
- Harden against potential NULL pointer dereference
- Fix typo in Kconfig test comment"
* tag 'kbuild-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (31 commits)
kconfig: tests: fix typo in comment
kconfig: Remove the architecture specific config for Propeller
kconfig: Remove the architecture specific config for AutoFDO
modpost: Add __llvm_covfun and __llvm_covmap to section_white_list
kconfig: add kconfig-sym-check static checker
kbuild: Remove unnecessary 'T' modifier in cmd_ar_builtin_fixup
kbuild: distributed build support for Clang ThinLTO
kbuild: move vmlinux.a build rule to scripts/Makefile.vmlinux_a
scripts: modpost: detect and report truncated buf_printf() output
kbuild: rpm-pkg: append %{?dist} macro to Release tag
run-clang-tools: run multiprocessing.Pool as context manager
compiler-clang.h: Drop explicit version number from "all" diagnostic macro
compiler-clang.h: Remove __cleanup -Wunused-variable workaround
kbuild: Remove check for broken scoping with clang < 17 in CC_HAS_ASM_GOTO_OUTPUT
x86/entry/vdso32: Remove conditional omission of '.cfi_offset eflags'
x86/module: Revert "Deal with GOT based stack cookie load on Clang < 17"
x86/build: Drop unnecessary '-ffreestanding' addition to KBUILD_CFLAGS
scripts/Makefile.warn: Drop -Wformat handling for clang < 16
riscv: Drop tautological condition from TOOLCHAIN_NEEDS_OLD_ISA_SPEC
riscv: Remove tautological condition from selection of ARCH_SUPPORTS_CFI
...
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This comment was thoughtlessly copied from the x86 version and doesn't
apply to arm64. Remove it.
Reported-by: Will Deacon <will@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20260614210209.2371030-1-tj@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- Reduce pipe->mutex contention by pre-allocating pages outside the
lock in anon_pipe_write().
anon_pipe_write() called alloc_page() once per page while holding
pipe->mutex. The allocation can sleep doing direct reclaim and runs
memcg charging, which extends the critical section and stalls any
concurrent reader on the same mutex. Now up to 8 pages are
pre-allocated before the mutex is taken, leftovers are recycled
into the per-pipe tmp_page[] cache before unlock, and any remainder
is released after unlock, keeping the allocator out of the critical
section on both sides. On a writers x readers sweep with 64KB
writes against a 1 MB pipe throughput improves 6-28% and average
write latency drops 5-22%; under memory pressure - when the cost of
holding the mutex across reclaim is highest - throughput improves
21-48% and latency drops 17-33%. The microbenchmark is added to
selftests.
- uaccess/sockptr: fix the ignored_trailing logic in
copy_struct_to_user() to behave as documented and the usize check
in copy_struct_from_sockptr() for user pointers, and add
copy_struct_{from,to}_bounce_buffer() and copy_struct_to_sockptr()
helpers for upcoming users (IPPROTO_SMBDIRECT, IPPROTO_QUIC).
- bpf: add a sleepable bpf_real_inode() kfunc that resolves the real
inode backing a dentry via d_real_inode(). On overlayfs the inode
attached to the dentry doesn't carry the underlying device
information; this is used by the filesystem restriction BPF program
that was merged into systemd.
- docs: add guidelines for submitting new filesystems, motivated by
the maintenance burden abandoned and untestable filesystems impose
on VFS developers, blocking infrastructure work like folio
conversions and iomap migration.
Fixes:
- libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
and drop the now-redundant assignments in callers. This began as a
one-line dma-buf fix for a path_noexec() warning; a pseudo
filesystem has no reason not to set SB_I_NOEXEC. All init_pseudo()
callers were audited: the only visible effect is on dma-buf where
SB_I_NOEXEC silences the warning.
- Handle set_blocksize() failures in legacy filesystems (bfs, hpfs,
qnx4, jfs, befs, affs, isofs, minix, ntfs3, omfs). Mounting a
device with a sector size > PAGE_SIZE crashed roughly half of them;
the rest had the same missing error handling pattern. Plus a
follow-up releasing the superblock buffer_head when setting the
minix v3 block size fails.
- mount: honour SB_NOUSER in the new mount API.
- fs/fcntl: fix a SOFTIRQ-unsafe lock order in fasync signaling by
switching the process-group paths of send_sigio() and send_sigurg()
from read_lock(&tasklist_lock) to RCU, matching the single-PID
path.
- vfs: add an FS_USERNS_DELEGATABLE flag and set it for NFS, fixing
delegated NFS mounts (fsopen() in a container with the mount
performed by a privileged daemon) that broke when non-init
s_user_ns was tied to FS_USERNS_MOUNT.
- selftests/namespaces: fix a hang in nsid_test where an unreaped
grandchild kept the TAP pipe write-end open, a waitpid(-1) race in
listns_efault_test, and a false FAIL on kernels without listns()
where the tests should SKIP.
- filelock: fix the break_lease() stub signature for
CONFIG_FILE_LOCKING=n.
- init/initramfs_test: wait for the async initramfs unpacking before
running; the test and do_populate_rootfs() share the parser state.
- fs/coredump: reduce redundant log noise in
validate_coredump_safety().
- iomap: pass the correct length to fserror_report_io() in
__iomap_write_begin().
- backing-file: fix the backing_file_open() kerneldoc.
Cleanups:
- initramfs: refactor the cpio hex header parsing to use hex2bin()
instead of the hand-rolled simple_strntoul() which is reverted, and
extend the initramfs KUnit tests to cover header fields with 0x
prefixes.
- Replace __get_free_pages() and friends with kmalloc()/kzalloc()
across quota, proc, ocfs2/dlm, nilfs2, nfs, nfsd, libfs, jfs, jbd2,
isofs, fuse, select, namespace, configfs, binfmt_misc, bfs, and the
do_mounts init code - part of the larger work of replacing page
allocator calls with kmalloc().
- Use clear_and_wake_up_bit() in unlock_buffer() and
journal_end_buffer_io_sync() instead of open-coding the sequence.
- Drop unused VFS exports: unexport drop_super_exclusive(), remove
start_removing_user_path_at(), and fold __start_removing_path()
into start_removing_path().
- fs/read_write: narrow the __kernel_write() export with
EXPORT_SYMBOL_FOR_MODULES().
- vfs: uapi: retire octal and hex constants in favor of (1 << n) for
the O_ flags. Finding a free bit for a new flag across the
architectures was needlessly hard with the mixed bases.
- dcache: add extra sanity checks of dead dentries in dentry_free()
via a new DENTRY_WARN_ONCE() that also prints d_flags.
- iov_iter: use kmemdup_array() in dup_iter() to harden the
allocation against multiplication overflow.
- fs/pipe: write to ->poll_usage only once.
- vfs: remove an always-taken if-branch in find_next_fd().
- dcache: use kmalloc_flex() for struct external_name in __d_alloc().
- namei: use QSTR() instead of QSTR_INIT() in path_pts().
- sync_file_range: delete dead S_ISLNK code.
- Comment fixes: retire a stale comment in fget_task_next() and fix
assorted spelling mistakes"
* tag 'vfs-7.2-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (73 commits)
backing-file: fix backing_file_open() kerneldoc parameter
iomap: pass the correct len to fserror_report_io in __iomap_write_begin
vfs: add FS_USERNS_DELEGATABLE flag and set it for NFS
filelock: fix break_lease() stub signature for CONFIG_FILE_LOCKING=n
vfs: uapi: retire octal and hex numbers in favor of (1 << n) for O_ flags
bpf: add bpf_real_inode() kfunc
fs/read_write: Do not export __kernel_write() to the entire world
libfs: drop redundant SB_I_NOEXEC/SB_I_NODEV in init_pseudo() callers
libfs: set SB_I_NOEXEC and SB_I_NODEV by default in init_pseudo()
mount: honour SB_NOUSER in the new mount API
fs/fcntl: fix SOFTIRQ-unsafe lock order in fasync signaling
selftests/pipe: add pipe_bench microbenchmark
fs/pipe: pre-allocate pages outside pipe->mutex in anon_pipe_write
fs: retire stale comment in fget_task_next()
fs: fix spelling mistakes in comment
bfs: replace get_zeroed_page() with kzalloc()
binfmt_misc: replace __get_free_page() with kmalloc()
configfs: replace __get_free_pages() with kzalloc()
fs/namespace: use __getname() to allocate mntpath buffer
fs/select: replace __get_free_page() with kmalloc()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull openat2 updates from Christian Brauner:
"Features:
- Add O_EMPTYPATH to openat(2)/openat2(2). To get an operable file
descriptor from an O_PATH file descriptor it is possible to use
openat(fd, ".", O_DIRECTORY) for directories, but other file types
require going through open("/proc/<pid>/fd/<nr>") and thus depend
on a functioning procfs.
With O_EMPTYPATH an empty path string is accepted and LOOKUP_EMPTY
is set at path resolution time, allowing to reopen the file behind
the file descriptor directly. Selftests are included.
- Add an OPENAT2_REGULAR flag for openat2(2) which refuses to open
anything but regular files with the new EFTYPE error code.
This implements the "ability to only open regular files" feature
requested by userspace via uapi-group.org and protects services
from being redirected to fifos, device nodes, and friends.
All atomic_open implementations were audited for OPENAT2_REGULAR
handling. Explicit checks were added to ceph, gfs2, nfs (v4), and
cifs/smb - these are the filesystems whose atomic_open can
encounter an existing non-regular file and would otherwise call
finish_open() on it or return a misleading error code.
The remaining implementations (9p, fuse, vboxsf, nfs v2/v3) only
call finish_open() on freshly created files and use
finish_no_open() for lookup hits, letting the VFS catch non-regular
files via the do_open() safety net.
Cleanups:
- Migrate the openat2 selftests to the kselftest harness and move
them under selftests/filesystems/. The tests were written in the
early days of selftests' TAP support and the modern kselftest
harness is much easier to follow and maintain. The contents of the
tests are unchanged and the new emptypath tests are ported on top.
- Make the LAST_XXX last-type constants private to fs/namei.c. The
only user outside of fs/namei.c was ksmbd which only needs to know
whether the last component is a regular one, so
vfs_path_parent_lookup() now performs the LAST_NORM check
internally. The ints are replaced with a dedicated enum last_type"
* tag 'vfs-7.2-rc1.openat2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
vfs: replace ints with enum last_type for LAST_XXX
vfs: make LAST_XXX private to fs/namei.c
selftests: openat2: port emptypath_test to kselftest harness
kselftest/openat2: test for OPENAT2_REGULAR flag
openat2: new OPENAT2_REGULAR flag support
openat2: introduce EFTYPE error code
selftest: add tests for O_EMPTYPATH
vfs: add O_EMPTYPATH to openat(2)/openat2(2)
selftests: openat2: migrate to kselftest harness
selftests: openat2: switch from custom ARRAY_LEN to ARRAY_SIZE
selftests: openat2: move helpers to header
selftests: move openat2 tests to selftests/filesystems/
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull task_exec_state updates from Christian Brauner:
"This introduces a new per-task task_exec_state structure and relocates
the dumpable mode and the user namespace captured at execve() from
mm_struct onto it. It stays attached to the task for its full
lifetime.
__ptrace_may_access() and several /proc owner and visibility checks
need to consult two pieces of state for any observable task, including
zombies that have already gone through exit_mm(): the dumpable mode
and the user namespace captured at execve(). Both live on mm_struct
today, which exit_mm() clears from the task long before the task is
reaped. A reader that races with do_exit() observes task->mm == NULL
and either fails the check or falls back to init_user_ns - which
denies legitimate access to non-dumpable zombies that were running in
a nested user namespace.
mm_struct loses ->user_ns and the dumpability bits in ->flags.
MMF_DUMPABLE_BITS is reserved so the MMF_DUMP_FILTER_* layout exposed
via /proc/<pid>/coredump_filter stays stable. task->user_dumpable and
its exit_mm() snapshot are removed.
task_exec_state is the privilege domain established by an execve().
Within a thread group it is shared via refcount; across thread groups
each task has its own:
- CLONE_VM siblings (thread-group members, io_uring workers)
refcount-share the parent's exec_state.
- Non-CLONE_VM clones (fork(), vfork() without CLONE_VM) allocate a
fresh exec_state inheriting the parent's dumpable mode and user_ns.
- execve() in the child allocates a fresh instance and installs it
under task_lock + exec_update_lock via task_exec_state_replace().
- Credential changes (setresuid, capset, ...) and
prctl(PR_SET_DUMPABLE) update dumpability on the current task's
exec_state, i.e., on the thread group's shared instance.
On top of this exec_mmap() no longer tears down the old mm while
holding exec_update_lock for writing and cred_guard_mutex. Neither
lock is needed for that: exec_update_lock only exists to make the mm
swap atomic with the later commit_creds() and all its readers operate
on the new mm; none looks at the detached old mm.
The cost was real: __mmput() runs exit_mmap() over the entire old
address space and can block in exit_aio() waiting for in-flight AIO,
so execve() of a large process blocked ptrace_attach() and every
exec_update_lock reader for the duration of the teardown.
The old mm is now stashed in bprm->old_mm and released from
setup_new_exec() after both locks are dropped, with a backstop in
free_bprm() for the error paths"
* tag 'kernel-7.2-rc1.task_exec_state' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
exec: free the old mm outside the exec locks
exec_state: relocate dumpable information
ptrace: add ptracer_access_allowed()
exec: introduce struct task_exec_state
sched/coredump: introduce enum task_dumpable
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs inode updates from Christian Brauner:
"This extends the lockless ->i_count handling.
iput() could already decrement any value greater than one locklessly
but acquiring a reference always required taking inode->i_lock. Now
acquiring a reference is lockless as long as the count was already at
least 1, i.e., only the 0->1 and 1->0 transitions take the lock.
This avoids the lock for the common cases of nfs calling into the
inode hash and btrfs using igrab(). Cleanup-wise icount_read_once() is
added to line up with inode_state_read_once() and the open-coded
->i_count loads across the tree are converted, and ihold() is
relocated and tidied up.
On top of that some stale lock ordering annotations are retired from
the inode hash code: iunique() no longer takes the hash lock since the
inode hash became RCU-searchable and s_inode_list_lock is no longer
taken under the hash lock either"
* tag 'vfs-7.2-rc1.inode' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
fs: retire stale lock ordering annotations from inode hash
fs: allow lockless ->i_count bumps as long as it does not transition 0->1
fs: relocate and tidy up ihold()
fs: add icount_read_once() and stop open-coding ->i_count loads
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Add basic support for the k230 SoC, which has been sitting in linux-next
for a long time waiting for the clock driver to reach an acceptable
state.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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This patch describes the clock controller integrated in K230 SoC
and replace dummy clocks with the real ones for UARTs.
For k230-canmv and k230-evb, they provide an additional external
pulse input through a pin to serve as clock source.
Co-developed-by: Troy Mitchell <TroyMitchell988@gmail.com>
Signed-off-by: Troy Mitchell <TroyMitchell988@gmail.com>
Signed-off-by: Xukai Wang <kingxukai@zohomail.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Add the reset controller node for the K230 SoC. Also add the reset
properties for all UART nodes.
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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"b" is ratified (Apr/2024) much later than its components zba/zbb/zbs
(Jun/2021). With "b" added into riscv/extensions.yaml, a dependency
checking rule is now enforced, which requires that when zba, zbb, and zbs
are all specified, "b" must be added as well. Failing to do this will
cause dtbs_check schema check warnings.
According to uabi.rst, as a single-letter extension, "b" should be added
after "c" in canonical order.
Update k230.dtsi to conform to this rule. Also synchronize "riscv,isa"
with "riscv,isa-extensions".
Signed-off-by: Junhui Liu <junhui.liu@pigmoral.tech>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Add pinctrl device, containing default config for uart, pwm, iis, iic
and mmc.
Signed-off-by: Ze Huang <18771902331@163.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Correct the errors in the spacing format, and move the aliases from
the SoC's dtsi to the board's dts, since it's more standard.
Signed-off-by: Jiayu Du <jiayu.riscv@isrc.iscas.ac.cn>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Add initial dts for CanMV-K230 and K230-EVB powered by Canaan Kendryte
K230 SoC [1].
Some key consideration:
- Only place BigCore which is 1.6GHz RV64GCBV
The existence of cache coherence between the two cores remains unknown
since they have dedicated L2 caches. And the factory SDK uses it for
other OS by default. I don't know whether the two CPUs on K230 SoC
can be used in one system. So only place BigCore here.
Meanwhile, although docs from Canaan said 1.6GHz Core with Vector is
CPU1, the CSR.MHARTID of this core is 0.
- Support for "zba" "zbb" "zbc" "zbs" are tested by hand
The user manual of C908 from T-Head does not document it specifically.
It just said it supports B extension V1.0. [2]
I have tested it by using this [3] which attempts to execute "add.uw",
"andn", "clmulr", "bclr" and they doesn't traps on K230. But on JH7110,
"clmulr" and "bclr" will trap.
- Support for "zicbom" is tested by hand
Have tested with some out-of-tree drivers from [4] that need DMA and they
do not come to the dts currently.
- Support for "zicboz" is tested by hand
Have tested with my own bare mental M-Mode program [5] which tries to use
zicboz to clear a 64B aligned block and got output[6] shows it supports
zicboz.
- Cache parameters are inferred from T-Head docs [2] and Canaan docs [1]
L1i: 32KB, VIPT 4-Way set-associative, 64B Cacheline
L1d: 32KB, VIPT 4-Way set-associative, 64B Cacheline
L2: 256KB, PIPT 16-way set-associative, 64B Cacheline
The numbers of cache sets are calculated from these parameters.
- MMU only supports Sv39
The T-Head docs [2] say the C908 core can be configured to support Sv48 and
Sv39 or only Sv39. On K230, I tried to write "riscv,sv48" on mmu-type in
dts and boot the mainline kernel. However, it failed during the kernel
probe and fell back to Sv39. I also tested it on M-Mode software, writing
Sv48 to satp.mode will not trap but will leave the CSR unchanged. While
writing Sv39, it will take effect. It shows that this CPU does not support
Sv48.
- Svpbmt and T-Head MAEE both supported
T-Head C908 does support both Svpbmt and T-Head MAEE for page-based memory
attributes and is controlled by BIT(21) on CSR.MXSTATUS. The Svpbmt is used
here for mainline kernel support for K230. If the kernel wants to use
Svpbmt, the M-Mode software should unset BIT(21) of CSR.MXSTATUS before
entering the S-Mode kernel. Otherwise, the kernel will not boot, as 0 on
T-Head MAEE is NonCachable Memory. Once the kernel switches from bare metal
to Sv39, It will lose dirty cache line modifications that haven't been
written back to the memory.
[1] https://developer.canaan-creative.com/k230/dev/zh/00_hardware/K230_datasheet.html#chapter-1-introduction
[2] https://occ-intl-prod.oss-ap-southeast-1.aliyuncs.com/resource//1699268369347/XuanTie-C908-UserManual.pdf
[3] https://github.com/cyyself/rvb_test
[4] https://github.com/cyyself/linux/tree/k230-mainline
[5] https://github.com/cyyself/simple-sw-workbench/commit/32657d807d64217323a80cb04ce114671e51ed60
[6] https://gist.github.com/cyyself/aa98b07b8c77bb1d53b5a4c5e67a37cf
Signed-off-by: Yangyu Chen <cyy@cyyself.name>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Pull ARM fixes from Russell King:
- Avoid KASAN instrumentation of half-word IO
- Use a byte load for KASAN shadow stack
- Fix kexec and hibernation with PAN
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux:
ARM: 9476/1: mm: fix kexec and hibernation with CONFIG_CPU_TTBR0_PAN
ARM: 9475/1: entry: use byte load for KASAN VMAP stack shadow
ARM: 9474/1: io: avoid KASAN instrumentation of raw halfword I/O
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* for-next/sysregs:
arm64/sysreg: Add HDBSS related register information
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* for-next/mpam:
arm_mpam: Update architecture version check for MPAM MSC
arm64: cpufeature: Add support for the MPAM v0.1 architecture version
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* for-next/mm: (24 commits)
Revert "arm64: mm: Unmap kernel data/bss entirely from the linear map"
Revert "arm64: mm: Defer remap of linear alias of data/bss"
arm64/mm: Rename ptdesc_t
arm64: mm: Defer remap of linear alias of data/bss
KVM: arm64: Omit tag sync on stage-2 mappings of the zero page
arm64: Avoid double evaluation of __ptep_get()
kasan: Move generic KASAN page tables out of BSS too
arm64: Rename page table BSS section to .bss..pgtbl
arm64: mm: Unmap kernel data/bss entirely from the linear map
arm64: mm: Map the kernel data/bss read-only in the linear map
mm: Make empty_zero_page[] const
sh: Drop cache flush of the zero page at boot
powerpc/code-patching: Avoid r/w mapping of the zero page
arm64: mm: Don't abuse memblock NOMAP to check for overlaps
arm64: Move fixmap and kasan page tables to end of kernel image
arm64: mm: Permit contiguous attribute for preliminary mappings
arm64: kfence: Avoid NOMAP tricks when mapping the early pool
arm64: mm: Permit contiguous descriptors to be manipulated
arm64: mm: Preserve non-contiguous descriptors when mapping DRAM
arm64: mm: Preserve existing table mappings when mapping DRAM
...
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* for-next/misc:
arm64: arch_timer: reuse arch_timer_read_cnt{p,v}ct_el0() helpers
arm64: patching: replace min_t with min in __text_poke
ARM64: remove unnecessary architecture-specific <asm/device.h>
arm64: Implement _THIS_IP_ using inline asm
arm64: panic from init_IRQ if IRQ handler stacks cannot be allocated
arm64: smp: Do not mark secondary CPUs possible under nosmp
arm64/daifflags: Make local_daif_*() helpers __always_inline
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* for-next/fpsimd-cleanups:
arm64: fpsimd: Remove <asm/fpsimdmacros.h>
arm64: fpsimd: Move SME save/restore inline
arm64: fpsimd: Move sve_flush_live() inline
arm64: fpsimd: Move SVE save/restore inline
arm64: fpsimd: Use opaque type for SME state
arm64: fpsimd: Use opaque type for SVE state
arm64: fpsimd: Move fpsimd save/restore inline
arm64: fpsimd: Split FPSR/FPCR from SVE save/restore
arm64: sysreg: Add FPCR and FPSR
arm64: fpsimd: Move sve_get_vl() and sme_get_vl() inline
arm64: fpsimd: Use assembler for baseline SME instructions
arm64: fpsimd: Use assembler for SVE instructions
arm64: fpsimd: Remove sve_set_vq() and sme_set_vq()
arm64: fpsimd: Fold sve_init_regs() into do_sve_acc()
KVM: arm64: pkvm: Remove struct cpu_sve_state
KVM: arm64: pkvm: Save host FPMR in host cpu context
KVM: arm64: Don't override FFR save/restore argument
KVM: arm64: Don't include <asm/fpsimdmacros.h>
arm64: fpsimd: Fix type mismatch in sme_{save,load}_state()
arm64: fpsimd: Fix type mismatch in sve_{save,load}_state()
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* for-next/errata:
arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU
arm64: errata: Mitigate TLBI errata on NVIDIA Olympus CPU
arm64: errata: Mitigate TLBI errata on various Arm CPUs
arm64: cputype: Add C1-Premium definitions
arm64: cputype: Add C1-Ultra definitions
arm64: kernel: Disable CNP on HiSilicon HIP09
arm64: cpufeature: Add WORKAROUND_DISABLE_CNP capability
arm64: proton-pack: use sysfs_emit in sysfs show functions
arm64: errata: Reformat table for IDs
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When compiling with sparse enabled (C=2), bitwise type warnings are
triggered in the RISC-V KVM implementation. This occurs because the
user-space data unboxing macro '__get_user_asm' performs implicit
casting on restricted types without forcing the compiler's compliance.
Additionally, raw 'unsigned long *' pointers are used to access the
SBI NACL shared memory, whereas the RISC-V SBI specification mandates
that these structures must follow little-endian byte ordering.
Fix these by:
1. Adding a '__force' cast to '__get_user_asm()' to safely suppress
implicit cast warnings during user-space data fetching.
2. Introducing the '__lelong' type macro, which dynamically resolves to
'__le32' or '__le64' depending on XLEN, and replacing 'unsigned long *'
with '__lelong *' to enforce proper compile-time endianness checks.
Signed-off-by: Sean Chang <seanwascoding@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260608155252.4292-1-seanwascoding@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource
Pull clocksource/driver updates from Daniel Lezcano:
- Remove the sifive,fine-ctr-bits property bindings because it is a
redundant information (Nick Hu)
- Remove the TCIU8 interrupt bindings on Renesas because it should not
be described as the documentation marked reserved and fix the
conditional reset line for the RZ/{T2H,N2H} (Cosmin Tanislav)
- Add the StarFive JHB100 clint DT bindings compatible string (Ley
Foon Tan)
- Extend schema condition for interrupts to cover D1 compatible
variant an add the D1 hstimer support (Michal Piekos)
- Update the ARM architected timer support to handle the ACPI GTDT v3
format and the EL2 virtual timer, enabling Linux to use the most
appropriate timer when running with VHE, while also fixing several
Device Trees to accurately reflect the underlying hardware (Marc
Zyngier)
- Cleanup and add the clocksource and the clockevent in the TI DM
timer (Markus Schneider-Pargmann)
- Add the multiple watchdogs support in the tegra186 and
tegra234. Dedicate one as a kernel watchdog (Kartik Rajput)
- Add the NXP clocksource selection for the scheduler in the Kconfig
(Enric Balletbo i Serra)
Link: https://lore.kernel.org/all/1e55e8d6-8024-4f17-8620-ab3385465d76@oss.qualcomm.com
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The /proc/interrupt handling rework dropped a 's' in the thermal event
printout, which breaks the thermal test in the Intel LKVS suite.
Bring the important letter back.
Fixes: 2b57c69917ee ("x86/irq: Make irqstats array based")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Closes: https://lore.kernel.org/oe-lkp/202606121325.97b29701-lkp@intel.com
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The tls_toe feature and its single user (chelsio chtls) have been
unmaintained for multiple years. It also hooks into the core of the
TCP implementation, and bypasses most of the networking stack.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/1f30e73275c07bf879f547589872d0916025a52e.1781165969.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"Two more small fixes came in, both addressing corner cases in platform
specific code: the microchip mpfs system controller probe and the CPU
power management on 32-bit rockchips SoCs"
* tag 'soc-fixes-7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: rockchip: keep reset control around
soc: microchip: mpfs-sys-controller: fix resource leak on probe error
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Implement shadowing of format-2 facility list when running in VSIE.
ASTFLEIE2 is available since IBM z16.
To function G1 has to run this KVM code and G1 and G2 have to run QEMU
with ASTFLEIE2 support.
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
[imbrenda@linux.ibm.com: Fix typo in comment]
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260612-vsie-alter-stfle-fac-v4-4-74f0e1559929@linux.ibm.com>
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Use switch case in anticipation of handling format-1 and format-2
facility list designations in the future.
As the alternate STFLE facilities are not enabled, only case 0 is
possible.
No functional change intended.
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260612-vsie-alter-stfle-fac-v4-3-74f0e1559929@linux.ibm.com>
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Detect alternate STFLE interpretive execution facility 2.
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260612-vsie-alter-stfle-fac-v4-2-74f0e1559929@linux.ibm.com>
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Directly use the size of the arrays instead of going through the
indirection of kvm_s390_fac_size().
Don't use magic number for the number of entries in the non hypervisor
managed facility bit mask list.
Make the constraint of that number on kvm_s390_fac_base obvious.
Get rid of implicit double anding of stfle_fac_list.
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-ID: <20260612-vsie-alter-stfle-fac-v4-1-74f0e1559929@linux.ibm.com>
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'rockchip', 'verisilicon', 'riscv', 'intel/vt-d', 'amd/amd-vi' and 'core' into next
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