Linus Torvalds [Thu, 9 Oct 2025 17:51:43 +0000 (10:51 -0700)]
Merge tag 's390-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Alexander Gordeev:
- Compile the decompressor with -Wno-pointer-sign flag to avoid a clang
warning
- Fix incomplete conversion to flag output macros in __xsch(), to avoid
always zero return value instead of the expected condition code
- Remove superfluous newlines from inline assemblies to improve
compiler inlining decisions
- Expose firmware provided UID Checking state in sysfs regardless of
the device presence or state
- CIO does not unregister subchannels when the attached device is
invalid or unavailable. Update the purge function to remove I/O
subchannels if the device number is found on cio_ignore list
- Consolidate PAI crypto allocation and cleanup paths
- The uv_get_secret_metadata() function has been removed some few
months ago, remove also the function mention it in a comment
* tag 's390-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/uv: Fix comment of uv_find_secret() function
s390/pai_crypto: Consolidate PAI crypto allocation and cleanup paths
s390/cio: Update purge function to unregister the unused subchannels
s390/pci: Expose firmware provided UID Checking state in sysfs
s390: Remove superfluous newlines from inline assemblies
s390/cio/ioasm: Fix __xsch() condition code handling
s390: Add -Wno-pointer-sign to KBUILD_CFLAGS_DECOMPRESSOR
Linus Torvalds [Thu, 9 Oct 2025 17:33:50 +0000 (10:33 -0700)]
Merge tag 'slab-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Fixes for several corner cases in error paths and debugging options,
related to the new kmalloc_nolock() functionality (Kuniyuki Iwashima,
Ran Xiaokai)
* tag 'slab-for-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
slub: Don't call lockdep_unregister_key() for immature kmem_cache.
slab: Fix using this_cpu_ptr() in preemptible context
slab: Add allow_spin check to eliminate kmemleak warnings
Yangyu Chen [Wed, 8 Oct 2025 14:36:52 +0000 (22:36 +0800)]
PCI: Fix regression in pci_bus_distribute_available_resources()
The refactoring in 4292a1e45fd4 ("PCI: Refactor distributing available
memory to use loops") switched pci_bus_distribute_available_resources() to
operate on an array of bridge windows. That accidentally looked up bus
resources via pci_bus_resource_n() and then passed those pointers to helper
routines that expect the resource to belong to the device. As soon as we
execute that code, pci_resource_num() warned because the resource wasn't in
the bridge's resource array.
This happens on my AMD Strix Halo machine with Thunderbolt device; the
error message is shown below:
Fix the regression by always fetching the resource directly from the bridge
with pci_resource_n(bridge, PCI_BRIDGE_RESOURCES + i). This restores the
original behaviour while keeping the refactored structure. Then we can
successfully assign resources to the Thunderbolt device.
Linus Torvalds [Wed, 8 Oct 2025 18:22:27 +0000 (11:22 -0700)]
Merge tag 'vfio-v6.18-rc1-pt2' of https://github.com/awilliam/linux-vfio
Pull more VFIO updates from Alex Williamson:
- Optimizations for DMA map and unmap opertions through the type1 vfio
IOMMU backend.
This uses various means of batching and hints from the mm structures
to improve efficiency and therefore performance, resulting in a
significant speedup for huge page use cases (Li Zhe)
- Expose supported device migration features through debugfs (Cédric Le
Goater)
* tag 'vfio-v6.18-rc1-pt2' of https://github.com/awilliam/linux-vfio:
vfio: Dump migration features under debugfs
vfio/type1: optimize vfio_unpin_pages_remote()
vfio/type1: introduce a new member has_rsvd for struct vfio_dma
vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages_remote()
vfio/type1: optimize vfio_pin_pages_remote()
mm: introduce num_pages_contiguous()
Linus Torvalds [Wed, 8 Oct 2025 16:44:38 +0000 (09:44 -0700)]
Merge tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- Conversions to yaml/json schema and fixes for input-related device
tree bindings
- New drivers:
- Awinic AW86927 haptic chip
- Hynitron CST816x series controller
- Himax HX852x(ES) touchscreen controller
- Fix uinput to not leak kernel memory via a gap in
uinput_ff_upload_compat structure
- Prevent overflow in pressure calculation in tsc2007 driver causing
phantom touches
- Make the Atmel maxTouch driver support generic touchscreen
configuration (flip, rotate, etc)
- Drop support for platform data in tca8418_keypad, pxa27x-keypad,
spear-keyboard and twl4030_keypad drivers, they all now rely on
generic device properties for configuration
- Other assorted changes and fixes
* tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (50 commits)
Input: atmel_mxt_ts - allow reset GPIO to sleep
Input: aw86927 - fix error code in probe()
Input: psxpad-spi - add a check for the return value of spi_setup()
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
Input: aw86927 - add driver for Awinic AW86927
dt-bindings: input: Add Awinic AW86927
dt-bindings: touchscreen: remove touchscreen.txt
dt-bindings: arm: bcm: raspberrypi,bcm2835-firmware: Add touchscreen child node
dt-bindings: touchscreen: convert eeti bindings to json schema
Input: pm8941-pwrkey - disable wakeup for resin by default
dt-bindings: input: pm8941-pwrkey: Document wakeup-source property
Input: add driver for Hynitron CST816x series
dt-bindings: input: touchscreen: add hynitron cst816x series
Input: imx6ul_tsc - set glitch threshold by DTS property
dt-bindings: touchscreen: fsl,imx6ul-tsc: support glitch thresold
dt-bindings: touchscreen: add debounce-delay-us property
Input: ps2-gpio - fix typo
Input: atmel_mxt_ts - add support for generic touchscreen configurations
dt-bindings: input: maxtouch: add common touchscreen properties
dt-bindings: touchscreen: convert zet6223 bindings to json schema
...
Linus Torvalds [Wed, 8 Oct 2025 16:38:31 +0000 (09:38 -0700)]
Merge tag 'v6.18-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- Fix zstd regression
- Ensure ti driver algorithm are set as async
- Revert patch disabling SHA1 in FIPS mode
- Fix RNG set_ent null-pointer dereference
* tag 'v6.18-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: rng - Ensure set_ent is always present
Revert "crypto: testmgr - desupport SHA-1 for FIPS 140"
crypto: ti - Add CRYPTO_ALG_ASYNC flag to DTHEv2 AES algos
crypto: zstd - Fix compression bug caused by truncation
Marek Vasut [Sun, 5 Oct 2025 02:33:10 +0000 (04:33 +0200)]
Input: atmel_mxt_ts - allow reset GPIO to sleep
The reset GPIO is not toggled in any critical section where it couldn't
sleep, allow the reset GPIO to sleep. This allows the driver to operate
reset GPIOs connected to I2C GPIO expanders.
Linus Torvalds [Tue, 7 Oct 2025 19:48:06 +0000 (12:48 -0700)]
Merge tag 'dma-mapping-6.18-2025-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
Pull dma-mapping fixes from Marek Szyprowski:
"Two small fixes for the recently performed code refactoring (Shigeru
Yoshida) and missing handling of direction parameter in DMA debug code
(Petr Tesarik)"
* tag 'dma-mapping-6.18-2025-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
dma-mapping: fix direction in dma_alloc direction traces
kmsan: fix kmsan_handle_dma() to avoid false positives
Linus Torvalds [Tue, 7 Oct 2025 19:13:26 +0000 (12:13 -0700)]
Merge tag 'char-misc-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are some small nvmem and fastrpc fixes that missed the cut-off to
get into 6.17-final, due to me being slow in getting them out, my
fault, not the maintainers of these subsystems :(
Anyway, better late than never. Changes included in here are:
- nvmem fix for automatic module loading
- fastrpc driver fixes for reported issues
All of these have been in linux-next for weeks (4?) with no reported
issues"
* tag 'char-misc-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc: fastrpc: Skip reference for DMA handles
misc: fastrpc: fix possible map leak in fastrpc_put_args
misc: fastrpc: Fix fastrpc_map_lookup operation
misc: fastrpc: Save actual DMA size in fastrpc_map structure
nvmem: layouts: fix automatic module loading
Linus Torvalds [Tue, 7 Oct 2025 18:41:06 +0000 (11:41 -0700)]
Merge tag 'staging-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some staging driver fixes that missed 6.17-final due to my
travel schedule. They fix a number of reported issues in the axis-fifo
driver, one of which was just independently discovered by someone else
today so someone is looking at this code.
All of these fixes have been in linux-next for many weeks with no
reported issues"
* tag 'staging-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: axis-fifo: flush RX FIFO on read errors
staging: axis-fifo: fix TX handling on copy_from_user() failure
staging: axis-fifo: fix maximum TX packet length check
Linus Torvalds [Tue, 7 Oct 2025 18:36:01 +0000 (11:36 -0700)]
Merge tag 'tty-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty driver fix from Greg KH:
"Here is a single driver fix for the qcom_geni_serial driver. It has
been in my tree for weeks, but missed being sent to you for 6.17-final
due to travel on my side.
This fixes a reported regression for this driver that prevents 6.17
from working properly on this platform.
It has been in linux-next for many weeks with no reported issues"
* tag 'tty-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: qcom-geni: Fix blocked task
Linus Torvalds [Tue, 7 Oct 2025 18:18:54 +0000 (11:18 -0700)]
Merge tag 'thermal-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more thermal control updates from Rafael Wysocki:
"Fix RZ/G3E driver introduction fall-out (Geert Uytterhoeven) and
improve the compilation and installation of the thermal library for
user space (Emil Dahl Juhl and Sascha Hauer)"
* tag 'thermal-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
tools: lib: thermal: expose thermal_exit symbols
tools: lib: thermal: don't preserve owner in install
tools: lib: thermal: use pkg-config to locate libnl3
thermal: renesas: Fix RZ/G3E fall-out
Linus Torvalds [Tue, 7 Oct 2025 16:45:07 +0000 (09:45 -0700)]
Merge tag 'acpi-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These fix a driver bug, clean up two pieces of code and improve the
fwnode API consistency:
- Add missing synchronization between interface updates in the ACPI
battery driver (Rafael Wysocki)
- Remove open coded check for cpu_feature_enabled() from
acpi_processor_power_init_bm_check() (Mario Limonciello)
- Remove redundant rcu_read_lock/unlock() under spinlock from
ghes_notify_hed() in the ACPI APEI support code (pengdonglin)
- Make the .get_next_child_node() callback in the ACPI fwnode backend
skip ACPI devices that are not present for consistency with the
analogous callback in the OF fwnode backend (Sakari Ailus)"
* tag 'acpi-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: property: Return present device nodes only on fwnode interface
ACPI: APEI: Remove redundant rcu_read_lock/unlock() under spinlock
ACPI: battery: Add synchronization between interface updates
x86/acpi/cstate: Remove open coded check for cpu_feature_enabled()
Linus Torvalds [Tue, 7 Oct 2025 16:39:51 +0000 (09:39 -0700)]
Merge tag 'pm-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These are cpufreq fixes and cleanups on top of the material merged
previously, a power management core code fix and updates of the
runtime PM framework including unit tests, documentation updates and
introduction of auto-cleanup macros for runtime PM "resume and get"
and "get without resuming" operations.
Specifics:
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6
cycle that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency()
to indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
- Make pm_runtime_put*() family of functions return 1 when the given
device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update
return values in kerneldoc comments for the runtime PM API (Brian
Norris, Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)"
* tag 'pm-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
docs/zh_CN: Fix malformed table
docs/zh_TW: Fix malformed table
PM: runtime: Fix error checking for kunit_device_register()
PM: runtime: Introduce one more usage counter guard
cpufreq: Drop unused symbol CPUFREQ_ETERNAL
ACPI: CPPC: Do not use CPUFREQ_ETERNAL as an error value
cpufreq: CPPC: Avoid using CPUFREQ_ETERNAL as transition delay
cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency
PM: runtime: Drop DEFINE_FREE() for pm_runtime_put()
PCI/sysfs: Use runtime PM guard macro for auto-cleanup
PM: runtime: Add auto-cleanup macros for "resume and get" operations
cpufreq: tegra186: Initialize all cores to max frequencies
cpufreq: tegra186: Set target frequency for all cpus in policy
rust: cpufreq: streamline find_supply_names
cpufreq: mediatek: fix device leak on probe failure
PM: sleep: Do not wait on SYNC_STATE_ONLY device links
PM: runtime: Update kerneldoc return codes
PM: runtime: Make put{,_sync}() return 1 when already suspended
PM: runtime: Add basic kunit tests for API contracts
Linus Torvalds [Tue, 7 Oct 2025 16:28:37 +0000 (09:28 -0700)]
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"There's a bunch of patches here across drivers/clk/ to migrate drivers
to use struct clk_ops::determine_rate() instead of the round_rate()
one so that we can remove the round_rate clk_op entirely. Brian has
taken up that task which nobody else has wanted to do for close to a
decade. Thanks Brian!
This is all prerequisite work to get to the real task of improving the
clk rate setting process. Once we have determine_rate() used
everywhere, we'll be able to do things like chain the rate request
structs in linked lists to order the rate setting operations or add
more parameters without having to change every clk driver in
existence. It's also nice to not have multiple ways to do something
which just causes confusion for clk driver authors. Overall I'm glad
this is getting done.
Beyond this change we also have a tweak to the clk_lookup() function
in the core framework to use hashing on the clk name instead of a clk
tree walk with string comparisons. We _still_ rely on the clk name to
be unique, because historically we've used globally unique strings to
describe the clk tree topology. This tree walk becomes increasingly
slow as more clks are added to the system. Searching from the roots
for a duplicate is simple but pretty dumb and it wastes boot time so
we're using a hash table as an improvement. Ideally we wouldn't rely
on the strings to be unique at all, relegating them to simply debug
information, but that is future work that will likely require some
sort of Kconfig knob indicating strings aren't used for topology
description.
Outside of the core framework changes we have the usual new SoC
support and fixes to clk drivers for things that were discovered once
the clks were used by consumer drivers. Nothing in particular is
jumping out at me in the "misc" pile, except maybe the Amlogic driver
that has gone through a refactoring. That series got a fix from
testing in -next though so it seems likely that things have been
getting good test coverage for a couple weeks already"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (299 commits)
clk: microchip: core: remove duplicate roclk_determine_rate()
reset: aspeed: register AST2700 reset auxiliary bus device
dt-bindings: clock: ast2700: modify soc0/1 clock define
clk: tegra: do not overallocate memory for bpmp clocks
clk: ep93xx: Use int type to store negative error codes
clk: nxp: Fix pll0 rate check condition in LPC18xx CGU driver
clk: loongson2: Add clock definitions for Loongson-2K0300 SoC
clk: loongson2: Avoid hardcoding firmware name of the reference clock
clk: loongson2: Allow zero divisors for dividers
clk: loongson2: Support scale clocks with an alternative mode
clk: loongson2: Allow specifying clock flags for gate clock
dt-bindings: clock: loongson2: Add Loongson-2K0300 compatible
clk: clocking-wizard: Fix output clock register offset for Versal platforms
clk: xilinx: Optimize divisor search in clk_wzrd_get_divisors_ver()
clk: mmp: pxa1908: Instantiate power driver through auxiliary bus
clk: s2mps11: add support for S2MPG10 PMIC clock
dt-bindings: clock: samsung,s2mps11: add s2mpg10
dt-bindings: stm32: cosmetic fixes for STM32MP25 clock and reset bindings
clk: stm32: introduce clocks for STM32MP21 platform
dt-bindings: stm32: add STM32MP21 clocks and reset bindings
...
Linus Torvalds [Tue, 7 Oct 2025 15:59:25 +0000 (08:59 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
- Preserve old 'tt_core' UAPI for Hisilicon L3C PMU driver
- Ensure linear alias of kprobes instruction page is not writable
- Fix kernel stack unwinding from BPF
- Fix build warnings from the Fujitsu uncore PMU documentation
- Fix hang with deferred 'struct page' initialisation and MTE
- Consolidate KPTI page-table re-writing code
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mte: Do not flag the zero page as PG_mte_tagged
docs: perf: Fujitsu: Fix htmldocs build warnings and errors
arm64: mm: Move KPTI helpers to mmu.c
tracing: Fix the bug where bpf_get_stackid returns -EFAULT on the ARM64
arm64: kprobes: call set_memory_rox() for kprobe page
drivers/perf: hisi: Add tt_core_deprecated for compatibility
Linus Torvalds [Tue, 7 Oct 2025 15:40:15 +0000 (08:40 -0700)]
Merge tag 'hyperv-next-signed-20251006' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Unify guest entry code for KVM and MSHV (Sean Christopherson)
- Switch Hyper-V MSI domain to use msi_create_parent_irq_domain()
(Nam Cao)
- Add CONFIG_HYPERV_VMBUS and limit the semantics of CONFIG_HYPERV
(Mukesh Rathor)
- Add kexec/kdump support on Azure CVMs (Vitaly Kuznetsov)
- Deprecate hyperv_fb in favor of Hyper-V DRM driver (Prasanna
Kumar T S M)
- Miscellaneous enhancements, fixes and cleanups (Abhishek Tiwari,
Alok Tiwari, Nuno Das Neves, Wei Liu, Roman Kisel, Michael Kelley)
* tag 'hyperv-next-signed-20251006' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
hyperv: Remove the spurious null directive line
MAINTAINERS: Mark hyperv_fb driver Obsolete
fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver
Drivers: hv: Make CONFIG_HYPERV bool
Drivers: hv: Add CONFIG_HYPERV_VMBUS option
Drivers: hv: vmbus: Fix typos in vmbus_drv.c
Drivers: hv: vmbus: Fix sysfs output format for ring buffer index
Drivers: hv: vmbus: Clean up sscanf format specifier in target_cpu_store()
x86/hyperv: Switch to msi_create_parent_irq_domain()
mshv: Use common "entry virt" APIs to do work in root before running guest
entry: Rename "kvm" entry code assets to "virt" to genericize APIs
entry/kvm: KVM: Move KVM details related to signal/-EINTR into KVM proper
mshv: Handle NEED_RESCHED_LAZY before transferring to guest
x86/hyperv: Add kexec/kdump support on Azure CVMs
Drivers: hv: Simplify data structures for VMBus channel close message
Drivers: hv: util: Cosmetic changes for hv_utils_transport.c
mshv: Add support for a new parent partition configuration
clocksource: hyper-v: Skip unnecessary checks for the root partition
hyperv: Add missing field to hv_output_map_device_interrupt
Jason-JH Lin [Fri, 29 Aug 2025 09:15:58 +0000 (17:15 +0800)]
mailbox: mtk-cmdq: Remove pm_runtime APIs from cmdq_mbox_send_data()
pm_runtime_get_sync() and pm_runtime_put_autosuspend() were previously
called in cmdq_mbox_send_data(), which is under a spinlock in msg_submit()
(mailbox.c). This caused lockdep warnings such as "sleeping function
called from invalid context" when running with lockdebug enabled.
The BUG report:
BUG: sleeping function called from invalid context at drivers/base/power/runtime.c:1164
in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 3616, name: kworker/u17:3
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
irq event stamp: 0
CPU: 1 PID: 3616 Comm: kworker/u17:3 Not tainted 6.1.87-lockdep-14133-g26e933aca785 #1
Hardware name: Google Ciri sku0/unprovisioned board (DT)
Workqueue: imgsys_runner imgsys_runner_func
Call trace:
dump_backtrace+0x100/0x120
show_stack+0x20/0x2c
dump_stack_lvl+0x84/0xb4
dump_stack+0x18/0x48
__might_resched+0x354/0x4c0
__might_sleep+0x98/0xe4
__pm_runtime_resume+0x70/0x124
cmdq_mbox_send_data+0xe4/0xb1c
msg_submit+0x194/0x2dc
mbox_send_message+0x190/0x330
imgsys_cmdq_sendtask+0x1618/0x2224
imgsys_runner_func+0xac/0x11c
process_one_work+0x638/0xf84
worker_thread+0x808/0xcd0
kthread+0x24c/0x324
ret_from_fork+0x10/0x20
Additionally, pm_runtime_put_autosuspend() should be invoked from the
GCE IRQ handler to ensure the hardware has actually completed its work.
To resolve these issues, remove the pm_runtime calls from
cmdq_mbox_send_data() and delegate power management responsibilities
to the client driver.
Fixes: 8afe816b0c99 ("mailbox: mtk-cmdq-mailbox: Implement Runtime PM with autosuspend") Signed-off-by: Jason-JH Lin <jason-jh.lin@mediatek.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Commit 23ef9d439769 ("kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI")
missed one instance of CONFIG_CFI_CLANG. Rename it to match the original
kernel header. This addresses the following build warning:
Warning: Kernel ABI header differences:
diff -u tools/include/linux/cfi_types.h include/linux/cfi_types.h
Cc: Kees Cook <kees@kernel.org> Fixes: a5ba183bdeee ("Merge tag 'hardening-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux") Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Carlos Llamas <cmllamas@google.com> Link: https://lore.kernel.org/r/20251006225148.1636486-1-cmllamas@google.com Signed-off-by: Kees Cook <kees@kernel.org>
The "transitional" symbol keyword, while working with the "olddefconfig"
target, was prompting during "oldconfig". This occurred because these
symbols were not being marked as user-defined when they received values
from transitional symbols that had user values. The "olddefconfig" target
explicitly doesn't prompt for anything, so this deficiency wasn't noticed.
The issue manifested when a symbol's value came from a transitional
symbol's user value but the receiving symbol wasn't marked with
SYMBOL_DEF_USER. Thus the "oldconfig" logic would then prompt for these
symbols unnecessarily.
Check after value calculation whether a symbol without a user value
gets its value from a single transitional symbol that does have a user
value. In such cases, mark the receiving symbol as user-defined to
prevent prompting.
Update regression tests to verify that symbols with transitional defaults
are not prompted in "oldconfig", except when conditional defaults evaluate
to 'no' and should legitimately be prompted.
Rafael J. Wysocki [Tue, 7 Oct 2025 10:59:50 +0000 (12:59 +0200)]
Merge branches 'acpi-x86', 'acpi-battery', 'acpi-apei' and 'acpi-property'
Merge an x86 cleanup related to ACPI, an ACPI battery driver fix, an
ACPI APEI cleanup, and an ACPI device properties handling update for
6.18-rc1:
- Remove open coded check for cpu_feature_enabled() from
acpi_processor_power_init_bm_check() (Mario Limonciello)
- Add missing synchronization between interface updates in the ACPI
battery driver (Rafael Wysocki)
- Remove redundant rcu_read_lock/unlock() under spinlock from
ghes_notify_hed() in the ACPI APEI support code (pengdonglin)
- Make the .get_next_child_node() callback in the ACPI fwnode backend
skip ACPI devices that are not present for consistency with the
analogous callback in the OF fwnode backend (Sakari Ailus)
* acpi-x86:
x86/acpi/cstate: Remove open coded check for cpu_feature_enabled()
* acpi-battery:
ACPI: battery: Add synchronization between interface updates
* acpi-apei:
ACPI: APEI: Remove redundant rcu_read_lock/unlock() under spinlock
* acpi-property:
ACPI: property: Return present device nodes only on fwnode interface
Rafael J. Wysocki [Tue, 7 Oct 2025 10:31:46 +0000 (12:31 +0200)]
Merge branch 'pm-cpufreq'
Merge cpufreq fixes and cleanups, mostly on top of those fixes, for
6.18-rc1:
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6 cycle
that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency() to
indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
* pm-cpufreq:
docs/zh_CN: Fix malformed table
docs/zh_TW: Fix malformed table
cpufreq: Drop unused symbol CPUFREQ_ETERNAL
ACPI: CPPC: Do not use CPUFREQ_ETERNAL as an error value
cpufreq: CPPC: Avoid using CPUFREQ_ETERNAL as transition delay
cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency
cpufreq: tegra186: Initialize all cores to max frequencies
cpufreq: tegra186: Set target frequency for all cpus in policy
rust: cpufreq: streamline find_supply_names
cpufreq: mediatek: fix device leak on probe failure
Rafael J. Wysocki [Tue, 7 Oct 2025 10:20:36 +0000 (12:20 +0200)]
Merge branches 'pm-core' and 'pm-runtime'
Merge runtime PM framework updates and a core power management code fix
for 6.18-rc1:
- Make pm_runtime_put*() family of functions return 1 when the
given device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update return
values in kerneldoc coments for the runtime PM API (Brian Norris,
Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)
* pm-core:
PM: sleep: Do not wait on SYNC_STATE_ONLY device links
* pm-runtime:
PM: runtime: Fix error checking for kunit_device_register()
PM: runtime: Introduce one more usage counter guard
PM: runtime: Drop DEFINE_FREE() for pm_runtime_put()
PCI/sysfs: Use runtime PM guard macro for auto-cleanup
PM: runtime: Add auto-cleanup macros for "resume and get" operations
PM: runtime: Update kerneldoc return codes
PM: runtime: Make put{,_sync}() return 1 when already suspended
PM: runtime: Add basic kunit tests for API contracts
Nicolas Frattaroli [Fri, 3 Oct 2025 20:15:06 +0000 (22:15 +0200)]
mailbox: add MediaTek GPUEB IPI mailbox
The MT8196 SoC uses an embedded MCU to control frequencies and power of
the GPU. This controller is referred to as "GPUEB".
It communicates to the application processor, among other ways, through
a mailbox.
The mailbox exposes one interrupt, which appears to only be fired when a
response is received, rather than a transaction is completed. For us,
this means we unfortunately need to poll for txdone.
The mailbox also requires the EB clock to be on when touching any of the
mailbox registers.
Add a simple driver for it based on the common mailbox framework.
Reviewed-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Nicolas Frattaroli [Fri, 3 Oct 2025 20:15:05 +0000 (22:15 +0200)]
dt-bindings: mailbox: Add MT8196 GPUEB Mailbox
The MediaTek MT8196 SoC includes an embedded MCU referred to as "GPUEB",
acting as glue logic to control power and frequency of the Mali GPU.
This MCU runs special-purpose firmware for this use, and the main
application processor communicates with it through a mailbox.
Add a binding that describes this mailbox.
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Harini T [Mon, 29 Sep 2025 07:37:23 +0000 (13:07 +0530)]
mailbox: zynqmp-ipi: Fix SGI cleanup on unbind
The driver incorrectly determines SGI vs SPI interrupts by checking IRQ
number < 16, which fails with dynamic IRQ allocation. During unbind,
this causes improper SGI cleanup leading to kernel crash.
Add explicit irq_type field to pdata for reliable identification of SGI
interrupts (type-2) and only clean up SGI resources when appropriate.
Fixes: 6ffb1635341b ("mailbox: zynqmp: handle SGI for shared IPI") Signed-off-by: Harini T <harini.t@amd.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Harini T [Mon, 29 Sep 2025 07:37:22 +0000 (13:07 +0530)]
mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop
The cleanup loop was starting at the wrong array index, causing
out-of-bounds access.
Start the loop at the correct index for zero-indexed arrays to prevent
accessing memory beyond the allocated array bounds.
Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Harini T <harini.t@amd.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Harini T [Mon, 29 Sep 2025 07:37:21 +0000 (13:07 +0530)]
mailbox: zynqmp-ipi: Remove dev.parent check in zynqmp_ipi_free_mboxes
The ipi_mbox->dev.parent check is unreliable proxy for registration
status as it fails to protect against probe failures that occur after
the parent is assigned but before device_register() completes.
device_is_registered() is the canonical and robust method to verify the
registration status.
Remove ipi_mbox->dev.parent check in zynqmp_ipi_free_mboxes().
Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Harini T <harini.t@amd.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
The controller is registered using the device-managed function
'devm_mbox_controller_register()'. As documented in mailbox.c, this
ensures the devres framework automatically calls
mbox_controller_unregister() when device_unregister() is invoked, making
the explicit call unnecessary.
Remove redundant mbox_controller_unregister() call as
device_unregister() handles controller cleanup.
Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Harini T <harini.t@amd.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
AngeloGioacchino Del Regno [Thu, 24 Jul 2025 08:38:39 +0000 (10:38 +0200)]
dt-bindings: mailbox: mediatek,gce-mailbox: Make clock-names optional
The GCE Mailbox needs only one clock and the clock-names can be
used only by the driver (which, for instance, does not use it),
and this is true for all of the currently supported MediaTek SoCs.
Stop requiring to specify clock-names on all non-MT8195 GCEs.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> Acked-by: Rob Herring (Arm) <robh@kernel.org> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Document CPU Control Processor (CPUCP) mailbox controller for Qualcomm
Glymur SoCs. It is software compatible with X1E80100 CPUCP mailbox
controller hence fallback to it.
Signed-off-by: Sibi Sankar <sibi.sankar@oss.qualcomm.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Ang Tien Sung [Mon, 25 Aug 2025 08:36:43 +0000 (16:36 +0800)]
MAINTAINERS: Change mailbox-altera maintainer
Update the mailbox-alters maintainer from <mun.yew.tham@intel.com> to
<tiensung.ang@altera.com> as Tham mun yew is no longer with Altera.
Signed-off-by: Ang Tien Sung <tiensung.ang@altera.com> Acked-by: Mun Yew Tham <mun.yew.tham@intel.com> Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Linus Torvalds [Mon, 6 Oct 2025 20:53:19 +0000 (13:53 -0700)]
Merge tag 'for-6.18-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Two short fixes that would be good to have before rc1"
* tag 'for-6.18-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix PAGE_SIZE format specifier in open_ctree()
btrfs: avoid potential out-of-bounds in btrfs_encode_fh()
Linus Torvalds [Mon, 6 Oct 2025 20:22:21 +0000 (13:22 -0700)]
Merge tag 'nfsd-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd updates from Chuck Lever:
"Mike Snitzer has prototyped a mechanism for disabling I/O caching in
NFSD. This is introduced in v6.18 as an experimental feature. This
enables scaling NFSD in /both/ directions:
- NFS service can be supported on systems with small memory
footprints, such as low-cost cloud instances
- Large NFS workloads will be less likely to force the eviction of
server-local activity, helping it avoid thrashing
Jeff Layton contributed a number of fixes to the new attribute
delegation implementation (based on a pending Internet RFC) that we
hope will make attribute delegation reliable enough to enable by
default, as it is on the Linux NFS client.
The remaining patches in this pull request are clean-ups and minor
optimizations. Many thanks to the contributors, reviewers, testers,
and bug reporters who participated during the v6.18 NFSD development
cycle"
* tag 'nfsd-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (42 commits)
nfsd: discard nfserr_dropit
SUNRPC: Make RPCSEC_GSS_KRB5 select CRYPTO instead of depending on it
NFSD: Add io_cache_{read,write} controls to debugfs
NFSD: Do the grace period check in ->proc_layoutget
nfsd: delete unnecessary NULL check in __fh_verify()
NFSD: Allow layoutcommit during grace period
NFSD: Disallow layoutget during grace period
sunrpc: fix "occurence"->"occurrence"
nfsd: Don't force CRYPTO_LIB_SHA256 to be built-in
nfsd: nfserr_jukebox in nlm_fopen should lead to a retry
NFSD: Reduce DRC bucket size
NFSD: Delay adding new entries to LRU
SUNRPC: Move the svc_rpcb_cleanup() call sites
NFS: Remove rpcbind cleanup for NFSv4.0 callback
nfsd: unregister with rpcbind when deleting a transport
NFSD: Drop redundant conversion to bool
sunrpc: eliminate return pointer in svc_tcp_sendmsg()
sunrpc: fix pr_notice in svc_tcp_sendto() to show correct length
nfsd: decouple the xprtsec policy check from check_nfsd_access()
NFSD: Fix destination buffer size in nfsd4_ssc_setup_dul()
...
Vincent Minet [Mon, 22 Sep 2025 05:37:02 +0000 (07:37 +0200)]
perf tools: Fix arm64 libjvmti build by generating unistd_64.h
Since commit 22f72088ffe6 ("tools headers: Update the syscall table with
the kernel sources") the arm64 syscall header is generated at build
time. Later, commit bfb713ea53c7 ("perf tools: Fix arm64 build by
generating unistd_64.h") added a dependency to libperf to guarantee that
this header was created before building libperf or perf itself.
However, libjvmti also requires this header but does not depend on
libperf, leading to build failures such as:
In file included from /usr/include/sys/syscall.h:24,
from /usr/include/syscall.h:1,
from jvmti/jvmti_agent.c:36:
tools/arch/arm64/include/uapi/asm/unistd.h:2:10: fatal error: asm/unistd_64.h: No such file or directory
2 | #include <asm/unistd_64.h>
Fix this by ensuring that libperf is built before libjvmti, so that
unistd_64.h is always available.
Fixes: 22f72088ffe69a37 ("tools headers: Update the syscall table with the kernel sources") Cc: Namhyung Kim <namhyung@kernel.org> Cc: Vincent Minet <v.minet@criteo.com> Link: https://lore.kernel.org/r/20250922053702.2688374-1-v.minet@criteo.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
James Clark [Mon, 6 Oct 2025 13:11:07 +0000 (14:11 +0100)]
perf tests: Don't retest sections in "Object code reading"
We already only test each kcore map once, but on slow systems
(particularly with network filesystems) even the non-kcore maps are
slow.
The test can test the same objdump output over and over which only wastes
time. Generalize the skipping mechanism to track all DSOs and addresses
so that each section is only tested once.
On a fully loaded ARM Juno (simulating a parallel 'perf test' run) with
a network filesystem, the original runtime is:
real 1m51.126s
user 0m19.445s
sys 1m15.431s
And the new runtime is:
real 0m48.873s
user 0m8.031s
sys 0m32.353s
Committer testing:
# perf test "code read"
22: Object code reading : Ok
#
Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: James Clark <james.clark@linaro.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Leo Yan [Mon, 6 Oct 2025 16:21:31 +0000 (17:21 +0100)]
perf docs: Document building with Clang
Add example commands for building perf with Clang.
Since recent Android NDK releases use Clang as the default compiler, a
separate Android specific document is no longer needed; point to the
general build documentation instead.
Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-9-4305590795b2@arm.com Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Justin Stitt <justinstitt@google.com> Cc: Bill Wendling <morbo@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: linux-riscv@lists.infradead.org Cc: llvm@lists.linux.dev Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Leo Yan [Mon, 6 Oct 2025 16:21:29 +0000 (17:21 +0100)]
perf test coresight: Dismiss clang warning for unroll loop thread
clang-18.1.3 on Ubuntu 24.04.2 reports warning:
unroll_loop_thread.c:35:25: warning: value size does not match register size specified by the constraint and modifier [-Wasm-operand-widths]
35 | : /* in */ [in] "r" (in)
| ^
unroll_loop_thread.c:39:1: warning: non-void function does not return a value [-Wreturn-type]
39 | }
| ^
Use the modifier "w" for 32-bit register access and return NULL at the
end of thread function.
Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-7-4305590795b2@arm.com Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Justin Stitt <justinstitt@google.com> Cc: Bill Wendling <morbo@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: linux-riscv@lists.infradead.org Cc: llvm@lists.linux.dev Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Leo Yan [Mon, 6 Oct 2025 16:21:26 +0000 (17:21 +0100)]
perf build: Disable thread safety analysis for perl header
When build with perl5, it reports error:
In file included from /usr/lib/perl5/5.42.0/x86_64-linux-thread-multi/CORE/perl.h:7933:
/usr/lib/perl5/5.42.0/x86_64-linux-thread-multi/CORE/inline.h:298:5: error:
mutex 'PL_env_mutex.lock' is not held on every path through
here [-Werror,-Wthread-safety-analysis]
298 | ENV_UNLOCK;
| ^
/usr/lib/perl5/5.42.0/x86_64-linux-thread-multi/CORE/perl.h:7091:31: note:
expanded from macro 'ENV_UNLOCK'
7091 | # define ENV_UNLOCK PERL_REENTRANT_UNLOCK("env"...
| ^
/usr/lib/perl5/5.42.0/x86_64-linux-thread-multi/CORE/perl.h:6465:7: note:
expanded from macro 'PERL_REENTRANT_UNLOCK'
6465 | } STMT_END
| ^
/usr/lib/perl5/5.42.0/x86_64-linux-thread-multi/CORE/perl.h:865:28: note:
expanded from macro 'STMT_END'
865 | # define STMT_END while (0)
| ^
The error is caused by perl header but not perf code, disable thread
safety analysis if including the header.
Though GCC does not support the thread safety analysis option, this
negative warning flag is silently ignored by it.
Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-4-4305590795b2@arm.com Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Justin Stitt <justinstitt@google.com> Cc: Bill Wendling <morbo@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: linux-riscv@lists.infradead.org Cc: llvm@lists.linux.dev Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Leo Yan [Mon, 6 Oct 2025 16:21:25 +0000 (17:21 +0100)]
perf build: Correct CROSS_ARCH for clang
Clang's -dumpmachine outputs "aarch64-unknown-linux-gnu", which does not
match the MultiArch convention. This prevents the build system from
detecting installed packages.
Fix by stripping the trailing '-' from CROSS_COMPILE when setting
CROSS_ARCH.
Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-3-4305590795b2@arm.com Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Justin Stitt <justinstitt@google.com> Cc: Bill Wendling <morbo@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: linux-riscv@lists.infradead.org Cc: llvm@lists.linux.dev Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Leo Yan [Mon, 6 Oct 2025 16:21:24 +0000 (17:21 +0100)]
perf python: split Clang options when invoking Popen
When passing a list to subprocess.Popen, each element maps to one argv
token. Current code bundles multiple Clang flags into a single element,
something like:
Fixes: 09e6f9f98370 ("perf python: Fix splitting CC into compiler and options") Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-2-4305590795b2@arm.com Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Justin Stitt <justinstitt@google.com> Cc: Bill Wendling <morbo@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: linux-riscv@lists.infradead.org Cc: llvm@lists.linux.dev Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Leo Yan [Mon, 6 Oct 2025 16:21:23 +0000 (17:21 +0100)]
tools build: Align warning options with perf
The feature test programs are built without enabling '-Wall -Werror'
options. As a result, a feature may appear to be available, but later
building in perf can fail with stricter checks.
Make the feature test program use the same warning options as perf.
Fixes: 1925459b4d92 ("tools build: Fix feature Makefile issues with 'O='") Signed-off-by: Leo Yan <leo.yan@arm.com> Reviewed-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/20251006-perf_build_android_ndk-v3-1-4305590795b2@arm.com Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Justin Stitt <justinstitt@google.com> Cc: Bill Wendling <morbo@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: James Clark <james.clark@linaro.org> Cc: linux-riscv@lists.infradead.org Cc: llvm@lists.linux.dev Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Ian Rogers [Sun, 5 Oct 2025 21:22:08 +0000 (14:22 -0700)]
perf srcline: Fallback between addr2line implementations
Factor the addr2line function implementation into separate source files
(addr2line.[ch]) and rename the addr2line function cmd__addr2line. In
srcline replace the ifdef-ed addr2line implementations with one that
first tries the llvm__addr2line implementation, then the deprecated
libbfd__addr2line function and on failure uses cmd__addr2line.
If HAVE_LIBLLVM_SUPPORT is enabled the llvm__addr2line will execute
against the libLLVM.so it is linked against.
If HAVE_LIBLLVM_DYNAMIC is enabled then libperf-llvm.so (that links
against libLLVM.so) will be dlopened. If the dlopen succeeds then the
behavior should match HAVE_LIBLLVM_SUPPORT. On failure cmd__addr2line is
used. The dlopen is only tried once.
If HAVE_LIBLLVM_DYNAMIC isn't enabled then llvm__addr2line immediately
fails and cmd__addr2line is used.
Clean up the dso__free_a2l logic, which is only needed in the non-LLVM
version and moved to addr2line.c.
Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexandre Ghiti <alexghiti@rivosinc.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.ibm.com> Cc: Bill Wendling <morbo@google.com> Cc: Charlie Jenkins <charlie@rivosinc.com> Cc: Collin Funk <collin.funk1@gmail.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Dr. David Alan Gilbert <linux@treblig.org> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Haibo Xu <haibo1.xu@intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Justin Stitt <justinstitt@google.com> Cc: Li Huafei <lihuafei1@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Mon, 6 Oct 2025 19:37:34 +0000 (12:37 -0700)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull x86 kvm updates from Paolo Bonzini:
"Generic:
- Rework almost all of KVM's exports to expose symbols only to KVM's
x86 vendor modules (kvm-{amd,intel}.ko and PPC's kvm-{pr,hv}.ko
x86:
- Rework almost all of KVM x86's exports to expose symbols only to
KVM's vendor modules, i.e. to kvm-{amd,intel}.ko
- Add support for virtualizing Control-flow Enforcement Technology
(CET) on Intel (Shadow Stacks and Indirect Branch Tracking) and AMD
(Shadow Stacks).
It is worth noting that while SHSTK and IBT can be enabled
separately in CPUID, it is not really possible to virtualize them
separately. Therefore, Intel processors will really allow both
SHSTK and IBT under the hood if either is made visible in the
guest's CPUID. The alternative would be to intercept
XSAVES/XRSTORS, which is not feasible for performance reasons
- Fix a variety of fuzzing WARNs all caused by checking L1 intercepts
when completing userspace I/O. KVM has already committed to
allowing L2 to to perform I/O at that point
- Emulate PERF_CNTR_GLOBAL_STATUS_SET for PerfMonV2 guests, as the
MSR is supposed to exist for v2 PMUs
- Allow Centaur CPU leaves (base 0xC000_0000) for Zhaoxin CPUs
- Add support for the immediate forms of RDMSR and WRMSRNS, sans full
emulator support (KVM should never need to emulate the MSRs outside
of forced emulation and other contrived testing scenarios)
- Clean up the MSR APIs in preparation for CET and FRED
virtualization, as well as mediated vPMU support
- Clean up a pile of PMU code in anticipation of adding support for
mediated vPMUs
- Reject in-kernel IOAPIC/PIT for TDX VMs, as KVM can't obtain EOI
vmexits needed to faithfully emulate an I/O APIC for such guests
- Many cleanups and minor fixes
- Recover possible NX huge pages within the TDP MMU under read lock
to reduce guest jitter when restoring NX huge pages
- Return -EAGAIN during prefault if userspace concurrently
deletes/moves the relevant memslot, to fix an issue where
prefaulting could deadlock with the memslot update
x86 (AMD):
- Enable AVIC by default for Zen4+ if x2AVIC (and other prereqs) is
supported
- Require a minimum GHCB version of 2 when starting SEV-SNP guests
via KVM_SEV_INIT2 so that invalid GHCB versions result in immediate
errors instead of latent guest failures
- Add support for SEV-SNP's CipherText Hiding, an opt-in feature that
prevents unauthorized CPU accesses from reading the ciphertext of
SNP guest private memory, e.g. to attempt an offline attack. This
feature splits the shared SEV-ES/SEV-SNP ASID space into separate
ranges for SEV-ES and SEV-SNP guests, therefore a new module
parameter is needed to control the number of ASIDs that can be used
for VMs with CipherText Hiding vs. how many can be used to run
SEV-ES guests
- Add support for Secure TSC for SEV-SNP guests, which prevents the
untrusted host from tampering with the guest's TSC frequency, while
still allowing the the VMM to configure the guest's TSC frequency
prior to launch
- Validate the XCR0 provided by the guest (via the GHCB) to avoid
bugs resulting from bogus XCR0 values
- Save an SEV guest's policy if and only if LAUNCH_START fully
succeeds to avoid leaving behind stale state (thankfully not
consumed in KVM)
- Explicitly reject non-positive effective lengths during SNP's
LAUNCH_UPDATE instead of subtly relying on guest_memfd to deal with
them
- Reload the pre-VMRUN TSC_AUX on #VMEXIT for SEV-ES guests, not the
host's desired TSC_AUX, to fix a bug where KVM was keeping a
different vCPU's TSC_AUX in the host MSR until return to userspace
KVM (Intel):
- Preparation for FRED support
- Don't retry in TDX's anti-zero-step mitigation if the target
memslot is invalid, i.e. is being deleted or moved, to fix a
deadlock scenario similar to the aforementioned prefaulting case
- Misc bugfixes and minor cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (142 commits)
KVM: x86: Export KVM-internal symbols for sub-modules only
KVM: x86: Drop pointless exports of kvm_arch_xxx() hooks
KVM: x86: Move kvm_intr_is_single_vcpu() to lapic.c
KVM: Export KVM-internal symbols for sub-modules only
KVM: s390/vfio-ap: Use kvm_is_gpa_in_memslot() instead of open coded equivalent
KVM: VMX: Make CR4.CET a guest owned bit
KVM: selftests: Verify MSRs are (not) in save/restore list when (un)supported
KVM: selftests: Add coverage for KVM-defined registers in MSRs test
KVM: selftests: Add KVM_{G,S}ET_ONE_REG coverage to MSRs test
KVM: selftests: Extend MSRs test to validate vCPUs without supported features
KVM: selftests: Add support for MSR_IA32_{S,U}_CET to MSRs test
KVM: selftests: Add an MSR test to exercise guest/host and read/write
KVM: x86: Define AMD's #HV, #VC, and #SX exception vectors
KVM: x86: Define Control Protection Exception (#CP) vector
KVM: x86: Add human friendly formatting for #XM, and #VE
KVM: SVM: Enable shadow stack virtualization for SVM
KVM: SEV: Synchronize MSR_IA32_XSS from the GHCB when it's valid
KVM: SVM: Pass through shadow stack MSRs as appropriate
KVM: SVM: Update dump_vmcb with shadow stack save area additions
KVM: nSVM: Save/load CET Shadow Stack state to/from vmcb12/vmcb02
...
Ian Rogers [Sun, 5 Oct 2025 21:22:05 +0000 (14:22 -0700)]
perf dso: Support BPF programs in dso__read_symbol()
Set the buffer to the code in the BPF linear info. This enables BPF
JIT code disassembly by LLVM and capstone.
Move the common but minimal disassmble_bpf_image call to
disassemble_objdump so that it is only called after falling back to the
objdump option.
Similarly move the disassmble_bpf function to disassemble_objdump and
rename to disassmble_bpf_libbfd to make it clearer that this support
relies on libbfd.
Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexandre Ghiti <alexghiti@rivosinc.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.ibm.com> Cc: Bill Wendling <morbo@google.com> Cc: Charlie Jenkins <charlie@rivosinc.com> Cc: Collin Funk <collin.funk1@gmail.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Dr. David Alan Gilbert <linux@treblig.org> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Haibo Xu <haibo1.xu@intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Justin Stitt <justinstitt@google.com> Cc: Li Huafei <lihuafei1@huawei.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <song@kernel.org> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Mon, 6 Oct 2025 19:10:55 +0000 (12:10 -0700)]
Merge tag 'uml-for-linux-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull uml updates from Johannes Berg:
- minor preparations for SMP support
- SPARSE_IRQ support for kunit
- help output cleanups
* tag 'uml-for-linux-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
um: Remove unused ipi_pipe field from cpuinfo_um
um: Remove unused cpu_data and current_cpu_data macros
um: Stop tracking virtual CPUs via mm_cpumask()
um: Centralize stub size calculations
um: Remove outdated comment about STUB_DATA_PAGES
um: Remove unused offset and child_err fields from stub_data
um: Indent time-travel help messages
um: Fix help message for ssl-non-raw
um: vector: Fix indentation for help message
um: Add missing trailing newline to help messages
um: virtio-pci: implement .shutdown()
um: Support SPARSE_IRQ
Linus Torvalds [Mon, 6 Oct 2025 18:17:18 +0000 (11:17 -0700)]
Merge tag 'libnvdimm-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Ira Weiny:
"Primarily bug fixes. Dave introduced the usage of cleanup.h a bit late
in the cycle to help with the new label work required within CXL [1]
nvdimm:
- Return -ENOMEM if devm_kcalloc() fails in ndtest_probe()
- Clean up __nd_ioctl() and remove gotos
- Remove duplicate linux/slab.h header
- Introduce guard() for nvdimm_bus_lock
- Use str_plural() to simplify the code
ACPI:
- NFIT: Fix incorrect ndr_desc being reportedin dev_err message"
Link: https://lore.kernel.org/all/20250917134116.1623730-1-s.neeraj@samsung.com/
* tag 'libnvdimm-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nvdimm: Remove duplicate linux/slab.h header
nvdimm: ndtest: Return -ENOMEM if devm_kcalloc() fails in ndtest_probe()
nvdimm: Clean up __nd_ioctl() and remove gotos
nvdimm: Introduce guard() for nvdimm_bus_lock
ACPI: NFIT: Fix incorrect ndr_desc being reportedin dev_err message
nvdimm: Use str_plural() to simplify the code
Stephen Boyd [Mon, 6 Oct 2025 18:00:55 +0000 (13:00 -0500)]
Merge branch 'clk-determine-rate' into clk-next
* clk-determine-rate: (120 commits)
clk: microchip: core: remove duplicate roclk_determine_rate()
clk: nxp: Fix pll0 rate check condition in LPC18xx CGU driver
clk: scmi: migrate round_rate() to determine_rate()
clk: ti: fapll: convert from round_rate() to determine_rate()
clk: ti: dra7-atl: convert from round_rate() to determine_rate()
clk: ti: divider: convert from round_rate() to determine_rate()
clk: ti: composite: convert from round_rate() to determine_rate()
clk: ti: dpll: convert from round_rate() to determine_rate()
clk: ti: dpll: change error return from ~0 to -EINVAL
clk: ti: dpll: remove round_rate() in favor of determine_rate()
clk: tegra: tegra210-emc: convert from round_rate() to determine_rate()
clk: tegra: super: convert from round_rate() to determine_rate()
clk: tegra: pll: convert from round_rate() to determine_rate()
clk: tegra: periph: divider: convert from round_rate() to determine_rate()
clk: tegra: divider: convert from round_rate() to determine_rate()
clk: tegra: audio-sync: convert from round_rate() to determine_rate()
clk: fixed-factor: drop round_rate() clk ops
clk: divider: remove round_rate() in favor of determine_rate()
clk: visconti: pll: convert from round_rate() to determine_rate()
clk: versatile: vexpress-osc: convert from round_rate() to determine_rate()
...
Linus Torvalds [Mon, 6 Oct 2025 18:00:30 +0000 (11:00 -0700)]
Merge tag 'linux-watchdog-6.18-rc1' of git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
- renesas,wdt: Add support for RZ/T2H and RZ/N2H
- Add SMARC-sAM67 support
- Several small fixes and improvements
* tag 'linux-watchdog-6.18-rc1' of git://www.linux-watchdog.org/linux-watchdog:
watchdog/hpwdt New maintianer
dt-bindings: watchdog: add SMARC-sAM67 support
watchdog: mpc8xxx_wdt: Reload the watchdog timer when enabling the watchdog
watchdog: visconti: don't print superfluous errors
watchdog: rzv2h_wdt: don't print superfluous errors
watchdog: rzg2l_wdt: don't print superfluous errors
watchdog: s3c2410_wdt: exynosautov9: Enable supported features
watchdog: s3c2410_wdt: exynosautov920: Enable QUIRK_HAS_32BIT_CNT
watchdog: s3c2410_wdt: Increase max timeout value of watchdog
watchdog: s3c2410_wdt: Fix max_timeout being calculated larger
watchdog: s3c2410_wdt: Replace hardcoded values with macro definitions
watchdog: rzv2h: Improve error strings and add newlines
watchdog: rzv2h: Add support for RZ/T2H
watchdog: rzv2h: Add support for configurable count clock source
watchdog: rzv2h: Make "oscclk" and reset controller optional
watchdog: rzv2h: Obtain clock-divider and timeout values from OF match data
dt-bindings: watchdog: renesas,wdt: Add support for RZ/T2H and RZ/N2H
watchdog: intel_oc_wdt: Do not try to write into const memory
Stephen Boyd [Mon, 6 Oct 2025 18:00:22 +0000 (13:00 -0500)]
Merge branches 'clk-marvell', 'clk-xilinx', 'clk-mediatek' and 'clk-loongson' into clk-next
- Add Mediatek MT8196 clk drivers
* clk-marvell:
clk: mmp: pxa1908: Instantiate power driver through auxiliary bus
* clk-xilinx:
clk: clocking-wizard: Fix output clock register offset for Versal platforms
clk: xilinx: Optimize divisor search in clk_wzrd_get_divisors_ver()
* clk-mediatek: (31 commits)
clk: mediatek: Add MT8196 vencsys clock support
clk: mediatek: Add MT8196 vdecsys clock support
clk: mediatek: Add MT8196 ovl1 clock support
clk: mediatek: Add MT8196 ovl0 clock support
clk: mediatek: Add MT8196 disp-ao clock support
clk: mediatek: Add MT8196 disp1 clock support
clk: mediatek: Add MT8196 disp0 clock support
clk: mediatek: Add MT8196 mfg clock support
clk: mediatek: Add MT8196 mdpsys clock support
clk: mediatek: Add MT8196 mcu clock support
clk: mediatek: Add MT8196 I2C clock support
clk: mediatek: Add MT8196 pextpsys clock support
clk: mediatek: Add MT8196 ufssys clock support
clk: mediatek: Add MT8196 peripheral clock support
clk: mediatek: Add MT8196 vlpckgen clock support
clk: mediatek: Add MT8196 topckgen2 clock support
clk: mediatek: Add MT8196 topckgen clock support
clk: mediatek: Add MT8196 apmixedsys clock support
dt-bindings: clock: mediatek: Describe MT8196 clock controllers
clk: mediatek: clk-mtk: Add MUX_DIV_GATE macro
...
* clk-loongson:
clk: loongson2: Add clock definitions for Loongson-2K0300 SoC
clk: loongson2: Avoid hardcoding firmware name of the reference clock
clk: loongson2: Allow zero divisors for dividers
clk: loongson2: Support scale clocks with an alternative mode
clk: loongson2: Allow specifying clock flags for gate clock
dt-bindings: clock: loongson2: Add Loongson-2K0300 compatible
Stephen Boyd [Mon, 6 Oct 2025 18:00:12 +0000 (13:00 -0500)]
Merge branches 'clk-microchip', 'clk-lookup' and 'clk-st' into clk-next
- Speed up clk_core_lookup() by using a hashtable
* clk-microchip:
ARM: at91: remove default values for PMC_PLL_ACR
clk: at91: add ACR in all PLL settings
clk: at91: sam9x7: Add peripheral clock id for pmecc
clk: at91: clk-master: Add check for divide by 3
clk: at91: clk-sam9x60-pll: force write to PLL_UPDT register
ARM: at91: pm: save and restore ACR during PLL disable/enable
* clk-lookup:
clk: Use hashtable for global clk lookups
clk: Sort include statements
* clk-st:
dt-bindings: stm32: cosmetic fixes for STM32MP25 clock and reset bindings
clk: stm32: introduce clocks for STM32MP21 platform
dt-bindings: stm32: add STM32MP21 clocks and reset bindings
Stephen Boyd [Mon, 6 Oct 2025 17:56:46 +0000 (12:56 -0500)]
Merge branches 'clk-samsung', 'clk-tegra' and 'clk-amlogic' into clk-next
* clk-samsung:
clk: s2mps11: add support for S2MPG10 PMIC clock
dt-bindings: clock: samsung,s2mps11: add s2mpg10
clk: samsung: exynos990: Add PERIC0 and PERIC1 clock support
dt-bindings: clock: exynos990: Add PERIC0 and PERIC1 clock units
clk: samsung: exynos990: Add missing USB clock registers to HSI0
clk: samsung: exynos990: Add LHS_ACEL gate clock for HSI0 and update CLK_NR_TOP
dt-bindings: clock: exynos990: Add LHS_ACEL clock ID for HSI0 block
clk: samsung: artpec-8: Add initial clock support for ARTPEC-8 SoC
clk: samsung: Add clock PLL support for ARTPEC-8 SoC
dt-bindings: clock: Add ARTPEC-8 clock controller
clk: samsung: exynos990: Add DPU_BUS and CMUREF mux/div and update CLKS_NR_TOP
dt-bindings: clock: exynos990: Extend clocks IDs
clk: samsung: exynos990: Replace bogus divs with fixed-factor clocks
clk: samsung: exynos990: Fix CMU_TOP mux/div bit widths
clk: samsung: exynos990: Use PLL_CON0 for PLL parent muxes
clk: samsung: pll: convert from round_rate() to determine_rate()
clk: samsung: cpu: convert from round_rate() to determine_rate()
clk: samsung: fsd: Add clk id for PCLK and PLL in CAM_CSI block
dt-bindings: clock: Add CAM_CSI clock macro for FSD
* clk-tegra:
clk: tegra: dfll: Add CVB tables for Tegra114
clk: tegra: Add DFLL DVCO reset control for Tegra114
dt-bindings: arm: tegra: Add ASUS TF101G and SL101
dt-bindings: reset: Add Tegra114 CAR header
dt-bindings: arm: tegra: Add Xiaomi Mi Pad (A0101)
dt-bindings: clock: tegra30: Add IDs for CSI pad clocks
dt-bindings: display: tegra: Move avdd-dsi-csi-supply from VI to CSI
dt-bindings: i2c: nvidia,tegra20-i2c: Document Tegra264 I2C
* clk-amlogic:
clk: amlogic: fix recent code refactoring
clk: amlogic: c3-peripherals: use helper for basic composite clocks
clk: amlogic: align s4 and c3 pwm clock descriptions
clk: amlogic: add composite clock helpers
clk: amlogic: use the common pclk definition
clk: amlogic: introduce a common pclk definition
clk: amlogic: pclk explicitly use CLK_IGNORE_UNUSED
clk: amlogic: drop CLK_SET_RATE_PARENT from peripheral clocks
clk: amlogic: move PCLK definition to clkc-utils
clk: amlogic: aoclk: use clkc-utils syscon probe
clk: amlogic: use probe helper in mmio based controllers
clk: amlogic: add probe helper for mmio based controllers
clk: amlogic: drop meson-clkcee
clk: amlogic: naming consistency alignment
Linus Torvalds [Mon, 6 Oct 2025 17:41:03 +0000 (10:41 -0700)]
Merge tag 'pci-v6.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Add PCI_FIND_NEXT_CAP() and PCI_FIND_NEXT_EXT_CAP() macros that
take config space accessor functions.
Implement pci_find_capability(), pci_find_ext_capability(), and
dwc, dwc endpoint, and cadence capability search interfaces with
them (Hans Zhang)
- Leave parent unit address 0 in 'interrupt-map' so that when we
build devicetree nodes to describe PCI functions that contain
multiple peripherals, we can build this property even when
interrupt controllers lack 'reg' properties (Lorenzo Pieralisi)
- Add a Xeon 6 quirk to disable Extended Tags and limit Max Read
Request Size to 128B to avoid a performance issue (Ilpo Järvinen)
- Add sysfs 'serial_number' file to expose the Device Serial Number
(Matthew Wood)
- Align m68k pcibios_enable_device() with other arches (Ilpo
Järvinen)
- Remove sparc pcibios_enable_device() implementations that don't do
anything beyond what pci_enable_resources() does (Ilpo Järvinen)
- Remove mips pcibios_enable_resources() and use
pci_enable_resources() instead (Ilpo Järvinen)
- Clean up bridge window sizing and assignment (Ilpo Järvinen),
including:
- Leave non-claimed bridge windows disabled
- Enable bridges even if a window wasn't assigned because not all
windows are required by downstream devices
- Preserve bridge window type when releasing the resource, since
the type is needed for reassignment
- Consolidate selection of bridge windows into two new
interfaces, pbus_select_window() and
pbus_select_window_for_type(), so this is done consistently
- Compute bridge window start and end earlier to avoid logging
stale information
MSI:
- Add quirk to disable MSI on RDC PCI to PCIe bridges (Marcos Del Sol
Vives)
Error handling:
- Align AER with EEH by allowing drivers to request a Bus Reset on
Non-Fatal Errors (in addition to the reset on Fatal Errors that we
already do) (Lukas Wunner)
- If error recovery fails, emit FAILED_RECOVERY uevents for the
devices, not for the bridge leading to them.
This makes them correspond to BEGIN_RECOVERY uevents (Lukas Wunner)
- Align AER with EEH by calling err_handler.error_detected()
callbacks to notify drivers if error recovery fails (Lukas Wunner)
- Align AER with EEH by restoring device error_state to
pci_channel_io_normal before the err_handler.slot_reset() callback.
This is earlier than before the err_handler.resume() callback
(Lukas Wunner)
- Emit a BEGIN_RECOVERY uevent when driver's
err_handler.error_detected() requests a reset, as well as when it
says recovery is complete or can be done without a reset (Niklas
Schnelle)
- Align s390 with AER and EEH by emitting uevents during error
recovery (Niklas Schnelle)
- Align EEH with AER and s390 by emitting BEGIN_RECOVERY,
SUCCESSFUL_RECOVERY, or FAILED_RECOVERY uevents depending on the
result of err_handler.error_detected() (Niklas Schnelle)
- Fix a NULL pointer dereference in aer_ratelimit() when ACPI GHES
error information identifies a device without an AER Capability
(Breno Leitao)
- Update error decoding and TLP Log printing for new errors in
current PCIe base spec (Lukas Wunner)
- Update error recovery documentation to match the current code
and use consistent nomenclature (Lukas Wunner)
ASPM:
- Enable all ClockPM and ASPM states for devicetree platforms, since
there's typically no firmware that enables ASPM
This is a risky change that may uncover hardware or configuration
defects at boot-time rather than when users enable ASPM via sysfs
later. Booting with "pcie_aspm=off" prevents this enabling
(Manivannan Sadhasivam)
- Remove the qcom code that enabled ASPM (Manivannan Sadhasivam)
Power management:
- If a device has already been disconnected, e.g., by a hotplug
removal, don't bother trying to resume it to D0 when detaching the
driver.
This avoids annoying "Unable to change power state from D3cold to
D0" messages (Mario Limonciello)
- Ensure devices are powered up before config reads for
'max_link_width', 'current_link_speed', 'current_link_width',
'secondary_bus_number', and 'subordinate_bus_number' sysfs files.
This prevents using invalid data (~0) in drivers or lspci and,
depending on how the PCIe controller reports errors, may avoid
error interrupts or crashes (Brian Norris)
Virtualization:
- Add rescan/remove locking when enabling/disabling SR-IOV, which
avoids list corruption on s390, where disabling SR-IOV also
generates hotplug events (Niklas Schnelle)
Peer-to-peer DMA:
- Free struct p2p_pgmap, not a member within it, in the
pci_p2pdma_add_resource() error path (Sungho Kim)
Endpoint framework:
- Document sysfs interface for BAR assignment of vNTB endpoint
functions (Jerome Brunet)
- Fix array underflow in endpoint BAR test case (Dan Carpenter)
- Skip endpoint IRQ test if the IRQ is out of range to avoid false
errors (Christian Bruel)
- Fix endpoint test case for controllers with fixed-size BARs smaller
than requested by the test (Marek Vasut)
- Restore inbound translation when disabling doorbell so the endpoint
doorbell test case can be run more than once (Niklas Cassel)
- Avoid a NULL pointer dereference when releasing DMA channels in
endpoint DMA test case (Shin'ichiro Kawasaki)
- Convert tegra194 interrupt number to MSI vector to fix endpoint
Kselftest MSI_TEST test case (Niklas Cassel)
- Reset tegra194 BARs when running in endpoint mode so the BAR tests
don't overwrite the ATU settings in BAR4 (Niklas Cassel)
- Handle errors in tegra194 BPMP transactions so we don't mistakenly
skip future PERST# assertion (Vidya Sagar)
AMD MDB PCIe controller driver:
- Update DT binding example to separate PERST# to a Root Port stanza
to make multiple Root Ports possible in the future (Sai Krishna
Musham)
- Add driver support for PERST# being described in a Root Port
stanza, falling back to the host bridge if not found there (Sai
Krishna Musham)
Freescale i.MX6 PCIe controller driver:
- Enable the 3.3V Vaux supply if available so devices can request
wakeup with either Beacon or WAKE# (Richard Zhu)
MediaTek PCIe Gen3 controller driver:
- Add optional sys clock ready time setting to avoid sys_clk_rdy
signal glitching in MT6991 and MT8196 (AngeloGioacchino Del Regno)
- Add DT binding and driver support for MT6991 and MT8196
(AngeloGioacchino Del Regno)
NVIDIA Tegra PCIe controller driver:
- When asserting PERST#, disable the controller instead of mistakenly
disabling the PLL twice (Nagarjuna Kristam)
- Convert struct tegra_msi mask_lock to raw spinlock to avoid a lock
nesting error (Marek Vasut)
Qualcomm PCIe controller driver:
- Select PCI Power Control Slot driver so slot voltage rails can be
turned on/off if described in Root Port devicetree node (Qiang Yu)
- Parse only PCI bridge child nodes in devicetree, skipping unrelated
nodes such as OPP (Operating Performance Points), which caused
probe failures (Krishna Chaitanya Chundru)
- Consolidate Root Port 'phy' and 'reset' properties in struct
qcom_pcie_port, regardless of whether we got them from the Root
Port node or the host bridge node (Manivannan Sadhasivam)
- Fetch and map the ELBI register space in the DWC core rather than
in each driver individually (Krishna Chaitanya Chundru)
- Enable ECAM mechanism in DWC core by setting up iATU with 'CFG
Shift Feature' and use this in the qcom driver (Krishna Chaitanya
Chundru)
- Add SM8750 compatible to qcom,pcie-sm8550.yaml (Krishna Chaitanya
Chundru)
- Update qcom,pcie-x1e80100.yaml to allow fifth PCIe host on Qualcomm
Glymur, which is compatible with X1E80100 but doesn't have the
cnoc_sf_axi clock (Qiang Yu)
Renesas R-Car PCIe controller driver:
- Fix a typo that prevented correct PHY initialization (Marek Vasut)
- Add a missing 1ms delay after PWR reset assertion as required by
the V4H manual (Marek Vasut)
- Assure reset has completed before DBI access to avoid SError (Marek
Vasut)
- Fix inverted PHY initialization check, which sometimes led to
timeouts and failure to start the controller (Marek Vasut)
- Pass the correct IRQ domain to generic_handle_domain_irq() to fix a
regression when converting to msi_create_parent_irq_domain()
(Claudiu Beznea)
- Drop the spinlock protecting the PMSR register - it's no longer
required since pci_lock already serializes accesses (Marek Vasut)
- Convert struct rcar_msi mask_lock to raw spinlock to avoid a lock
nesting error (Marek Vasut)
SOPHGO PCIe controller driver:
- Check for existence of struct cdns_pcie.ops before using it to
allow Cadence drivers that don't need to supply ops (Chen Wang)
- Add DT binding and driver for the SOPHGO SG2042 PCIe controller
(Chen Wang)
- Update pinctrl documentation of initial states and use in runtime
suspend/resume (Christian Bruel)
- Add pinctrl_pm_select_init_state() for use by stm32 driver, which
needs it during resume (Christian Bruel)
- Add devicetree bindings and drivers for the STMicroelectronics
STM32MP25 in host and endpoint modes (Christian Bruel)
Synopsys DesignWare PCIe controller driver:
- Add support for x16 in devicetree 'num-lanes' property (Konrad
Dybcio)
- Verify that if DT specifies a single IRQ for all eDMA channels, it
is named 'dma' (Niklas Cassel)
TI J721E PCIe driver:
- Add MODULE_DEVICE_TABLE() so driver can be autoloaded (Siddharth
Vadapalli)
- Power controller off before configuring the glue layer so the
controller latches the correct values on power-on (Siddharth
Vadapalli)
TI Keystone PCIe controller driver:
- Use devm_request_irq() so 'ks-pcie-error-irq' is freed when driver
exits with error (Siddharth Vadapalli)
- Add Peripheral Virtualization Unit (PVU), which restricts DMA from
PCIe devices to specific regions of host memory, to the ti,am65
binding (Jan Kiszka)
Xilinx NWL PCIe controller driver:
- Clear bootloader E_ECAM_CONTROL before merging in the new driver
value to avoid writing invalid values (Jani Nurminen)"
* tag 'pci-v6.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (141 commits)
PCI/AER: Avoid NULL pointer dereference in aer_ratelimit()
MAINTAINERS: Add entry for ST STM32MP25 PCIe drivers
PCI: stm32-ep: Add PCIe Endpoint support for STM32MP25
dt-bindings: PCI: Add STM32MP25 PCIe Endpoint bindings
PCI: stm32: Add PCIe host support for STM32MP25
PCI: xilinx-nwl: Fix ECAM programming
PCI: j721e: Fix incorrect error message in probe()
PCI: keystone: Use devm_request_irq() to free "ks-pcie-error-irq" on exit
dt-bindings: PCI: qcom,pcie-x1e80100: Set clocks minItems for the fifth Glymur PCIe Controller
PCI: dwc: Support 16-lane operation
PCI: Add lockdep assertion in pci_stop_and_remove_bus_device()
PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV
PCI: rcar-host: Convert struct rcar_msi mask_lock into raw spinlock
PCI: tegra194: Rename 'root_bus' to 'root_port_bus' in tegra_pcie_downstream_dev_to_D0()
PCI: tegra: Convert struct tegra_msi mask_lock into raw spinlock
PCI: rcar-gen4: Fix inverted break condition in PHY initialization
PCI: rcar-gen4: Assure reset occurs before DBI access
PCI: rcar-gen4: Add missing 1ms delay after PWR reset assertion
PCI: Set up bridge resources earlier
PCI: rcar-host: Drop PMSR spinlock
...
Linus Torvalds [Mon, 6 Oct 2025 17:37:06 +0000 (10:37 -0700)]
Merge tag 'dmaengine-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"A couple of new device support and small driver updates for this
round.
New support:
- Intel idxd Wildcat Lake family support
- SpacemiT K1 PDMA controller support
- Renesas RZ/G3E family support
Updates:
- Xilinx shutdown support and dma client properties update
- Designware edma callback_result support"
* tag 'dmaengine-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dt-bindings: dma: rz-dmac: Document RZ/G3E family of SoCs
dmaengine: dw-edma: Set status for callback_result
dmaengine: mv_xor: match alloc_wc and free_wc
dmaengine: mmp_pdma: Add SpacemiT K1 PDMA support with 64-bit addressing
dmaengine: mmp_pdma: Add operations structure for controller abstraction
dmaengine: mmp_pdma: Add reset controller support
dmaengine: mmp_pdma: Add clock support
dt-bindings: dma: Add SpacemiT K1 PDMA controller
dt-bindings: dmaengine: xilinx_dma: Remove DMA client properties
dmaengine: Fix dma_async_tx_descriptor->tx_submit documentation
dmaengine: xilinx_dma: Support descriptor setup from dma_vecs
dmaengine: sh: setup_xref error handling
dmaengine: Replace zero-length array with flexible-array
dmaengine: ppc4xx: Remove space before newline
dmaengine: idxd: Add a new IAA device ID for Wildcat Lake family platforms
dmaengine: idxd: Replace memset(0) + strscpy() with strscpy_pad()
dt-bindings: dma: nvidia,tegra20-apbdma: Add undocumented compatibles and "clock-names"
dmaengine: zynqmp_dma: Add shutdown operation support
Linus Torvalds [Mon, 6 Oct 2025 17:34:22 +0000 (10:34 -0700)]
Merge tag 'phy-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Pull phy updates from Vinod Koul:
"The usual bunch of device support and update to drivers.
New Support
- Qualcomm SM8750 QMP PCIe PHY dual lane support, PMIV0104 eusb2
repeater support, QCS8300 eDP PHY support
- Renesas RZ/T2H and RZ/N2H support and updates to driver for that
- TI TCAN1051 phy support
- Rockchip rk3588 dphy support, RK3528 combphy support
Updates:
- cadence updates for calibration and polling for ready and enabling
of lower resolutions, runtime pm support,
- Rockchip: enable U3 otg port
- Renesas USXGMII mode support
- Qualcomm UFS PHY and PLL regulator load support"
* tag 'phy-for-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (64 commits)
phy: rockchip: phy-rockchip-inno-csidphy: add support for rk3588 variant
phy: rockchip: phy-rockchip-inno-csidphy: allow for different reset lines
phy: rockchip: phy-rockchip-inno-csidphy: allow writes to grf register 0
dt-bindings: phy: rockchip-inno-csi-dphy: add rk3588 variant
dt-bindings: phy: rockchip-inno-csi-dphy: make power-domains non-required
phy: cadence: cdns-dphy: Enable lower resolutions in dphy
phy: renesas: r8a779f0-ether-serdes: add new step added to latest datasheet
phy: renesas: r8a779f0-ether-serdes: add USXGMII mode
phy: sophgo: Add USB 2.0 PHY driver for Sophgo CV18XX/SG200X
dt-bindings: phy: Add Sophgo CV1800 USB phy
phy: cadence: cdns-dphy: Update calibration wait time for startup state machine
phy: cadence: cdns-dphy: Fix PLL lock and O_CMN_READY polling
phy: renesas: rcar-gen3-usb2: Fix ID check logic with VBUS valid
dt-bindings: phy: ti,tcan104x-can: Document TI TCAN1051
phy: lynx-28g: check return value when calling lynx_28g_pll_get
phy: qcom: m31-eusb2: Fix the error log while enabling clock
phy: rockchip: usbdp: Remove redundant ternary operators
phy: renesas: rcar-gen3-usb2: Remove redundant ternary operators
phy: hisilicon: Remove redundant ternary operators
phy: qcom-qmp-ufs: Add PHY and PLL regulator load
...
Linus Torvalds [Mon, 6 Oct 2025 17:32:22 +0000 (10:32 -0700)]
Merge tag 'soundwire-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
"A very small update this time
- add few registers to debugfs
- core: drop dev_pm_domain_detach() call and use min() to improve
code"
* tag 'soundwire-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: Use min() to improve code
soundwire: bus: Drop dev_pm_domain_detach() call
soundwire: debugfs: add SCP_SDCA_IntStatX and SCP_SDCA_IntMaskX registers
A debugfs directory was recently added for VFIO devices. Add a new
"features" file under the migration sub-directory to expose which
features the device supports.
Li Zhe [Thu, 14 Aug 2025 06:47:14 +0000 (14:47 +0800)]
vfio/type1: optimize vfio_unpin_pages_remote()
When vfio_unpin_pages_remote() is called with a range of addresses that
includes large folios, the function currently performs individual
put_pfn() operations for each page. This can lead to significant
performance overheads, especially when dealing with large ranges of pages.
It would be very rare for reserved PFNs and non reserved will to be mixed
within the same range. So this patch utilizes the has_rsvd variable
introduced in the previous patch to determine whether batch put_pfn()
operations can be performed. Moreover, compared to put_pfn(),
unpin_user_page_range_dirty_lock() is capable of handling large folio
scenarios more efficiently.
The performance test results for completing the 16G VFIO IOMMU DMA
unmapping are as follows.
Base(v6.16):
------- AVERAGE (MADV_HUGEPAGE) --------
VFIO UNMAP DMA in 0.141 s (113.7 GB/s)
------- AVERAGE (MAP_POPULATE) --------
VFIO UNMAP DMA in 0.307 s (52.2 GB/s)
------- AVERAGE (HUGETLBFS) --------
VFIO UNMAP DMA in 0.135 s (118.6 GB/s)
With this patchset:
------- AVERAGE (MADV_HUGEPAGE) --------
VFIO UNMAP DMA in 0.044 s (363.2 GB/s)
------- AVERAGE (MAP_POPULATE) --------
VFIO UNMAP DMA in 0.289 s (55.3 GB/s)
------- AVERAGE (HUGETLBFS) --------
VFIO UNMAP DMA in 0.044 s (361.3 GB/s)
For large folio, we achieve an over 67% performance improvement in
the VFIO UNMAP DMA item. For small folios, the performance test
results appear to show a slight improvement.
Suggested-by: Jason Gunthorpe <jgg@ziepe.ca> Signed-off-by: Li Zhe <lizhe.67@bytedance.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20250814064714.56485-6-lizhe.67@bytedance.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Li Zhe [Thu, 14 Aug 2025 06:47:13 +0000 (14:47 +0800)]
vfio/type1: introduce a new member has_rsvd for struct vfio_dma
Introduce a new member has_rsvd for struct vfio_dma. This member is
used to indicate whether there are any reserved or invalid pfns in
the region represented by this vfio_dma. If it is true, it indicates
that there is at least one pfn in this region that is either reserved
or invalid.
Li Zhe [Thu, 14 Aug 2025 06:47:12 +0000 (14:47 +0800)]
vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages_remote()
The function vpfn_pages() can help us determine the number of vpfn
nodes on the vpfn rb tree within a specified range. This allows us
to avoid searching for each vpfn individually in the function
vfio_unpin_pages_remote(). This patch batches the vfio_find_vpfn()
calls in function vfio_unpin_pages_remote().
Li Zhe [Thu, 14 Aug 2025 06:47:11 +0000 (14:47 +0800)]
vfio/type1: optimize vfio_pin_pages_remote()
When vfio_pin_pages_remote() is called with a range of addresses that
includes large folios, the function currently performs individual
statistics counting operations for each page. This can lead to significant
performance overheads, especially when dealing with large ranges of pages.
Batch processing of statistical counting operations can effectively enhance
performance.
In addition, the pages obtained through longterm GUP are neither invalid
nor reserved. Therefore, we can reduce the overhead associated with some
calls to function is_invalid_reserved_pfn().
The performance test results for completing the 16G VFIO IOMMU DMA mapping
are as follows.
Base(v6.16):
------- AVERAGE (MADV_HUGEPAGE) --------
VFIO MAP DMA in 0.049 s (328.5 GB/s)
------- AVERAGE (MAP_POPULATE) --------
VFIO MAP DMA in 0.268 s (59.6 GB/s)
------- AVERAGE (HUGETLBFS) --------
VFIO MAP DMA in 0.051 s (310.9 GB/s)
With this patch:
------- AVERAGE (MADV_HUGEPAGE) --------
VFIO MAP DMA in 0.025 s (629.8 GB/s)
------- AVERAGE (MAP_POPULATE) --------
VFIO MAP DMA in 0.253 s (63.1 GB/s)
------- AVERAGE (HUGETLBFS) --------
VFIO MAP DMA in 0.030 s (530.5 GB/s)
For large folio, we achieve an over 40% performance improvement.
For small folios, the performance test results indicate a
slight improvement.
Signed-off-by: Li Zhe <lizhe.67@bytedance.com> Co-developed-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: David Hildenbrand <david@redhat.com> Tested-by: Eric Farman <farman@linux.ibm.com> Link: https://lore.kernel.org/r/20250814064714.56485-3-lizhe.67@bytedance.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Li Zhe [Thu, 14 Aug 2025 06:47:10 +0000 (14:47 +0800)]
mm: introduce num_pages_contiguous()
Let's add a simple helper for determining the number of contiguous pages
that represent contiguous PFNs.
In an ideal world, this helper would be simpler or not even required.
Unfortunately, on some configs we still have to maintain (SPARSEMEM
without VMEMMAP), the memmap is allocated per memory section, and we might
run into weird corner cases of false positives when blindly testing for
contiguous pages only.
One example of such false positives would be a memory section-sized hole
that does not have a memmap. The surrounding memory sections might get
"struct pages" that are contiguous, but the PFNs are actually not.
This helper will, for example, be useful for determining contiguous PFNs
in a GUP result, to batch further operations across returned "struct
page"s. VFIO will utilize this interface to accelerate the VFIO DMA map
process.
Implementation based on Linus' suggestions to avoid new usage of
nth_page() where avoidable.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Suggested-by: Jason Gunthorpe <jgg@ziepe.ca> Signed-off-by: Li Zhe <lizhe.67@bytedance.com> Co-developed-by: David Hildenbrand <david@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20250814064714.56485-2-lizhe.67@bytedance.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Linus Torvalds [Mon, 6 Oct 2025 03:43:01 +0000 (20:43 -0700)]
Merge tag 'ata-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata updates from Damien Le Moal:
- Improve the DT bindings documentation for the highbanck, imx and
xgene-ahci controllers (Krzysztof, Fabio, Rob)
* tag 'ata-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
dt-bindings: ata: apm,xgene-ahci: Add apm,xgene-ahci-v2 support
dt-bindings: ata: imx: Document 'target-supply'
dt-bindings: ata: highbank: Minor whitespace cleanup in example
Herbert Xu [Thu, 2 Oct 2025 09:45:39 +0000 (17:45 +0800)]
crypto: rng - Ensure set_ent is always present
Ensure that set_ent is always set since only drbg provides it.
Fixes: 77ebdabe8de7 ("crypto: af_alg - add extra parameters for DRBG interface") Reported-by: Yiqi Sun <sunyiqixm@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linus Torvalds [Sun, 5 Oct 2025 19:11:07 +0000 (12:11 -0700)]
Merge tag 'mm-stable-2025-10-03-16-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
"Only two patch series in this pull request:
- "mm/memory_hotplug: fixup crash during uevent handling" from Hannes
Reinecke fixes a race that was causing udev to trigger a crash in
the memory hotplug code
- "mm_slot: following fixup for usage of mm_slot_entry()" from Wei
Yang adds some touchups to the just-merged mm_slot changes"
* tag 'mm-stable-2025-10-03-16-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/khugepaged: use KMEM_CACHE()
mm/ksm: cleanup mm_slot_entry() invocation
Documentation/mm: drop pxx_mkdevmap() descriptions from page table helpers
mm: clean up is_guard_pte_marker()
drivers/base: move memory_block_add_nid() into the caller
mm/memory_hotplug: activate node before adding new memory blocks
drivers/base/memory: add node id parameter to add_memory_block()
Linus Torvalds [Sun, 5 Oct 2025 19:08:14 +0000 (12:08 -0700)]
Merge tag 'efi-next-for-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
- Document what OVMF stands for (Open Virtual Machine Firmware)
- Clear NX restrictions also from 'more reliable' type memory when
using the DXE service API
* tag 'efi-next-for-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi/x86: Memory protection on EfiGcdMemoryTypeMoreReliable
efi: Explain OVMF acronym in OVMF_DEBUG_LOG help text
Linus Torvalds [Sun, 5 Oct 2025 17:48:33 +0000 (10:48 -0700)]
Merge tag 'integrity-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity updates from Mimi Zohar:
"Just a couple of changes: crypto code cleanup and a IMA xattr bug fix"
* tag 'integrity-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr
lib/digsig: Use SHA-1 library instead of crypto_shash
integrity: Select CRYPTO from INTEGRITY_ASYMMETRIC_KEYS
Linus Torvalds [Sun, 5 Oct 2025 17:02:54 +0000 (10:02 -0700)]
Merge tag 'for-linus' of https://github.com/openrisc/linux
Pull OpenRISC updates from Stafford Horne:
"I picked up one series from Chen Miao, our Google Summer of Code
contributor, which adds OpenRISC support for static keys"
* tag 'for-linus' of https://github.com/openrisc/linux:
openrisc: Add jump label support
openrisc: Regenerate defconfigs.
openrisc: Add R_OR1K_32_PCREL relocation type module support
openrisc: Add text patching API support
Linus Torvalds [Sun, 5 Oct 2025 16:43:36 +0000 (09:43 -0700)]
Merge tag 'trace-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Use READ_ONCE() and WRITE_ONCE() instead of RCU for syscall
tracepoints
Individual system call trace events are pseudo events attached to the
raw_syscall trace events that just trace the entry and exit of all
system calls. When any of these individual system call trace events
get enabled, an element in an array indexed by the system call number
is assigned to the trace file that defines how to trace it. When the
trace event triggers, it reads this array and if the array has an
element, it uses that trace file to know what to write it (the trace
file defines the output format of the corresponding system call).
The issue is that it uses rcu_dereference_ptr() and marks the
elements of the array as using RCU. This is incorrect. There is no
RCU synchronization here. The event file that is pointed to has a
completely different way to make sure its freed properly. The reading
of the array during the system call trace event is only to know if
there is a value or not. If not, it does nothing (it means this
system call isn't being traced). If it does, it uses the information
to store the system call data.
The RCU usage here can simply be replaced by READ_ONCE() and
WRITE_ONCE() macros.
- Have the system call trace events use "0x" for hex values
Some system call trace events display hex values but do not have "0x"
in front of it. Seeing "count: 44" can be assumed that it is 44
decimal when in actuality it is 44 hex (68 decimal). Display "0x44"
instead.
- Use vmalloc_array() in tracing_map_sort_entries()
The function tracing_map_sort_entries() used array_size() and
vmalloc() when it could have simply used vmalloc_array().
- Use for_each_online_cpu() in trace_osnoise.c()
Instead of open coding for_each_cpu(cpu, cpu_online_mask), use
for_each_online_cpu().
- Move the buffer field in struct trace_seq to the end
The buffer field in struct trace_seq is architecture dependent in
size, and caused padding for the fields after it. By moving the
buffer to the end of the structure, it compacts the trace_seq
structure better.
- Remove redundant zeroing of cmdline_idx field in
saved_cmdlines_buffer()
The structure that contains cmdline_idx is zeroed by memset(), no
need to explicitly zero any of its fields after that.
- Use system_percpu_wq instead of system_wq in user_event_mm_remove()
As system_wq is being deprecated, use the new wq.
- Add cond_resched() is ftrace_module_enable()
Some modules have a lot of functions (thousands of them), and the
enabling of those functions can take some time. On non preemtable
kernels, it was triggering a watchdog timeout. Add a cond_resched()
to prevent that.
- Add a BUILD_BUG_ON() to make sure PID_MAX_DEFAULT is always a power
of 2
There's code that depends on PID_MAX_DEFAULT being a power of 2 or it
will break. If in the future that changes, make sure the build fails
to ensure that the code is fixed that depends on this.
- Grab mutex_lock() before ever exiting s_start()
The s_start() function is a seq_file start routine. As s_stop() is
always called even if s_start() fails, and s_stop() expects the
event_mutex to be held as it will always release it. That mutex must
always be taken in s_start() even if that function fails.
* tag 'trace-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix lock imbalance in s_start() memory allocation failure path
tracing: Ensure optimized hashing works
ftrace: Fix softlockup in ftrace_module_enable
tracing: replace use of system_wq with system_percpu_wq
tracing: Remove redundant 0 value initialization
tracing: Move buffer in trace_seq to end of struct
tracing/osnoise: Use for_each_online_cpu() instead of for_each_cpu()
tracing: Use vmalloc_array() to improve code
tracing: Have syscall trace events show "0x" for values greater than 10
tracing: Replace syscall RCU pointer assignment with READ/WRITE_ONCE()
Linus Torvalds [Sun, 5 Oct 2025 16:38:26 +0000 (09:38 -0700)]
Merge tag 'trace-tools-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing tools updates from Steven Rostedt
- This is mostly just consolidating code between osnoise/timerlat and
top/hist for easier maintenance and less future divergence
* tag 'trace-tools-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tools/rtla: Add remaining support for osnoise actions
tools/rtla: Add test engine support for unexpected output
tools/rtla: Fix -A option name in test comment
tools/rtla: Consolidate code between osnoise/timerlat and hist/top
tools/rtla: Create common_apply_config()
tools/rtla: Move top/hist params into common struct
tools/rtla: Consolidate common parameters into shared structure
Linus Torvalds [Sun, 5 Oct 2025 15:16:20 +0000 (08:16 -0700)]
Merge tag 'probes-fixes-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probe fix from Masami Hiramatsu:
- Fix race condition in kprobe initialization causing NULL pointer
dereference. This happens on weak memory model, which does not
correctly manage the flags access with appropriate memory barriers.
Use RELEASE-ACQUIRE to fix it.
* tag 'probes-fixes-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix race condition in kprobe initialization causing NULL pointer dereference
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