Shuah Khan [Tue, 6 Jan 2026 23:13:14 +0000 (16:13 -0700)]
MAINTAINERS: Update for the doc subsystem
Adding myself as a reviewer for doc subsystem.
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20260106231316.24474-1-skhan@linuxfoundation.org>
Diego Viola [Wed, 7 Jan 2026 08:04:09 +0000 (05:04 -0300)]
CREDITS: add whitespace before opening parentheses
in order to maintain consistent formatting across the file.
Signed-off-by: Diego Viola <diego.viola@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20260107080411.59483-1-diego.viola@gmail.com>
Changbin Du [Thu, 8 Jan 2026 11:38:36 +0000 (19:38 +0800)]
tools: jobserver: Prevent deadlock caused by incorrect jobserver configuration and enhance error reporting
When using GNU Make's jobserver feature in kernel builds, a bug in MAKEFLAGS
propagation caused "--jobserver-auth=r,w" to reference an unintended file
descriptor. This led to infinite loops in jobserver-exec's os.read() calls
due to empty token.
My shell opened /etc/passwd for some reason without closing it, and as a
result, all child processes inherited this fd 3.
$ ls -l /proc/self/fd
total 0
lrwx------ 1 changbin changbin 64 Dec 25 13:03 0 -> /dev/pts/1
lrwx------ 1 changbin changbin 64 Dec 25 13:03 1 -> /dev/pts/1
lrwx------ 1 changbin changbin 64 Dec 25 13:03 2 -> /dev/pts/1
lr-x------ 1 changbin changbin 64 Dec 25 13:03 3 -> /etc/passwd
lr-x------ 1 changbin changbin 64 Dec 25 13:03 4 -> /proc/
1421383/fd
In this case, the `make` should open a new file descriptor for jobserver
control, but clearly, it did not do so and instead still passed fd 3 as
"--jobserver-auth=3,4" in MAKEFLAGS. (The version of my gnu make is 4.3)
This update ensures robustness against invalid jobserver configurations,
even when `make` incorrectly pass non-pipe file descriptors.
* Rejecting empty reads to prevent infinite loops on EOF.
* Clearing `self.jobs` to avoid writing to incorrect files if invalid tokens
are detected.
* Printing detailed error messages to stderr to inform the user.
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Changbin Du <changbin.du@huawei.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20260108113836.
2976527-1-changbin.du@huawei.com>
Yu Liao [Thu, 25 Dec 2025 12:14:38 +0000 (20:14 +0800)]
Documentation/kernel-parameters: Add tsa under mitigations=off
On X86 AMD systems, mitigations=off also disables the Transient
Scheduler Attacks (TSA) mitigation. Add it to the list.
Signed-off-by: Yu Liao <liaoyu.ly@bytedance.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251225121438.38427-1-liaoyu.ly@bytedance.com>
Akiyoshi Kurita [Thu, 25 Dec 2025 16:16:15 +0000 (01:16 +0900)]
docs: spufs: fix ppc64 architecture line break
Fix a broken line break in the word "architecture" in the spufs
documentation.
Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251225161615.
3107808-1-weibu@redadmin.org>
Wu Canhong [Fri, 26 Dec 2025 16:02:19 +0000 (00:02 +0800)]
doc: input: fix typos in input.rst
'even codes' should be 'event codes' at the end of input.rst
Signed-off-by: Wu Canhong <canhong12@163.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251226160219.64818-1-canhong12@163.com>
Thorsten Blum [Mon, 22 Dec 2025 23:25:04 +0000 (00:25 +0100)]
Documentation: kernel-hacking: Remove :c:func: annotations
Remove the useless :c:func: annotations.
Suggested-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251222232506.2615-2-thorsten.blum@linux.dev>
Bagas Sanjaya [Tue, 23 Dec 2025 03:52:53 +0000 (10:52 +0700)]
Documentation: kernel-hacking: Convert internal links
Convert internal cross-references in "Putting Your Stuff in the kernel"
section from inline code to internal links.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251223035254.22894-4-bagasdotme@gmail.com>
Bagas Sanjaya [Tue, 23 Dec 2025 03:52:52 +0000 (10:52 +0700)]
Documentation: kernel-hacking: Do not italicize EXPORT_SYMBOL{,_GPL}() references
Do not italicize EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL() references in
EXPORT_SYMBOL_NS() and EXPORT_SYMBOL_NS_GPL() subsections.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251223035254.22894-3-bagasdotme@gmail.com>
Bagas Sanjaya [Tue, 23 Dec 2025 03:52:51 +0000 (10:52 +0700)]
Documentation: kernel-hacking: Remove current macro annotation
Remove unneeded :c:macro: annotation of current macro.
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251223035254.22894-2-bagasdotme@gmail.com>
Max Nikulin [Tue, 23 Dec 2025 11:12:23 +0000 (18:12 +0700)]
docs: admin: devices: remove /dev/cdwriter
Remove /dev/cdwriter from the local symlinks table and from the related
note.
Creation of the symlink was removed from udev in commit [1] that
became a part of release 115 in 2007 [2].
The altered text was added in 1995 [3].
[1] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=
b1a2b83f2d
2007-08-11 14:06:03 +0200 Kay Sievers.
rules: update Fedora rules
[2] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?h=
7e599863919
2007-08-24 01:29:54 +0200 Kay Sievers.
release 115
[3] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/diff/Documentation/devices.txt?h=v2.5.45&id=
6e995ea941a
1995-11-21 Linus Torvalds.
Import 1.3.43
Signed-off-by: Max Nikulin <manikulin@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
f5c3f6e9-cd92-47e3-89c3-
06dbcfc98c17@gmail.com>
Akiyoshi Kurita [Tue, 23 Dec 2025 11:29:46 +0000 (20:29 +0900)]
docs: keystone: fix typo in knav-qmss documentation
Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251223112946.
2580519-1-weibu@redadmin.org>
Sasha Levin [Tue, 23 Dec 2025 12:21:10 +0000 (07:21 -0500)]
docs: add AI Coding Assistants documentation
Add guidance for AI assistants and developers using AI tools for kernel
contributions, per the consensus reached at the 2025 Maintainers Summit.
Create Documentation/process/coding-assistants.rst with detailed guidance
on licensing, Signed-off-by requirements, and attribution format. The
README points AI tools to this documentation.
This will allow coding assistants to easily parse these instructions and
comply with guidelines set by the community.
Link: https://lwn.net/Articles/1049830/
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251223122110.
2496946-1-sashal@kernel.org>
SeongJae Park [Thu, 25 Dec 2025 01:40:22 +0000 (17:40 -0800)]
Docs/translations/ko_KR: remove memory-barriers
The memory-barriers.txt Korean translation is quite outdated. The last
update on the translation was made on 2022-10-10, by commit
ee5a86f451f7
("docs/memory-barriers.txt/kokr: Fix confusing name of 'data dependency
barrier'"). After the date, the original memory-barriers.txt got seven
more changes so far. The most recent one was made on 2025-11-05. But
none of those are applied to the translation.
Maybe I can work again on keeping it updated. But, given the
advancement of translation tools, I think it might not be worth keeping
it at all. Remove the outdated translation.
If it turns out to be worthy to keep the translation and someone willing
to keep it updated steps up, this could be reverted.
This change was inspired from the last kernel summit discussion [1].
[1] https://lpc.events/event/19/contributions/2259/
Cc: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: SeongJae Park <sj@kernel.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251225014027.15948-1-sj@kernel.org>
SeongJae Park [Thu, 25 Dec 2025 01:54:45 +0000 (17:54 -0800)]
docs: submitting-patches: suggest adding previous version links
For review of patches that revisioned multiple times, patch changelogs
are very useful. Adding actual links to the previous versions can
further help the review. Using such links, reviewers can double check
the changelog by themselves, and find previous discussions. Nowadays
having such links (e.g., lore.kernel.org archive links) is easy and
reliable. Suggest adding such links if available.
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251225015447.16387-1-sj@kernel.org>
Vincent Mailhol [Thu, 25 Dec 2025 12:47:37 +0000 (13:47 +0100)]
doc-guide: kernel-doc: specify that W=n does not check header files
The documentation states that:
make W=n
can be used to verify the documentation format. This is true for .c
files but not for headers [1].
Modify the documentation to specify that headers files are not covered
by make W=n and that these need to be checked separately with
scripts/kernel-doc.
[1] commit
3a025e1d1c2e ("Add optional check for bad kernel-doc comments")
Link: https://git.kernel.org/torvalds/c/3a025e1d1c2e
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251225-doc-format-check-v1-1-
dff637a4d275@kernel.org>
Volodymyr Kot [Thu, 25 Dec 2025 13:39:11 +0000 (13:39 +0000)]
Doc: correct spelling and wording mistakes
Fixed capitalization and punctuation in process documentation.
Signed-off-by: Volodymyr Kot <volodymyr.kot.ua@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251225133911.87512-1-volodymyr.kot.ua@gmail.com>
Vincent Mailhol [Thu, 25 Dec 2025 23:46:48 +0000 (00:46 +0100)]
docs: process: email-client: add Thunderbird "Toggle Line Wrap" extension
While reading the git-format-patch manpages [1], I discovered the existence
of the "Toggle Line Wrap" extension for Thunderbird which I found rather
convenient.
Looking at the history, the ancestor of this extension was added to the
documentation in commit
e0e34e977a7c ("Documentation/email-clients.txt:
update Thunderbird docs with wordwrap plugin") but then removed in commit
f9a0974d3f70 ("Documentation: update thunderbird email client settings").
Extend the paragraph on Thunderbird's mailnews.wraplength register to
mention the existence of the "Toggle Line Wrap" extension. The goal is not
to create a war on what is the best option so make it clear that this is
just an alternative.
[1] man git-format-patch -- §Thunderbird
Link: https://git-scm.com/docs/git-format-patch#_thunderbird
Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Acked-by: Sotir Danailov <sndanailov@gmail.com> # As past commit author
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251226-docs_thunderbird-toggle-line-wrap-v2-1-
aebb8c60025d@kernel.org>
Mustafa Elrasheid [Sat, 27 Dec 2025 12:52:44 +0000 (15:52 +0300)]
docs: Makefile: wrap SPHINXDIRS help text
When using `make help`, SPHINXDIR doesn't wrap around 80 characters,
causing text to overflow or wrap in incorrect ways,
which then makes the text difficult to read
Signed-off-by: Mustafa Elrasheid <mustafaelrasheid@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251227125244.6407-1-mustafaelrasheid@gmail.com>
Randy Dunlap [Fri, 2 Jan 2026 20:06:57 +0000 (12:06 -0800)]
docs: find-unused-docs.sh: fixup directory usage
The recent move of this script from scripts/ to tools/docs/
did not account for the 'cd' directory usage.
Update "cd .." to "cd ../.." to make the script self-correcting.
This also eliminates a shell warning:
./tools/docs/find-unused-docs.sh: line 33: cd: Documentation/: No such file or directory
Fixes:
184414c6a6ca ("docs: move find-unused-docs.sh to tools/docs")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Fixes:
184414c6a6ca (docs: move find-unused-docs.sh to tools/docs)
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20260102200657.
1040234-1-rdunlap@infradead.org>
Masaharu Noguchi [Sat, 3 Jan 2026 05:42:39 +0000 (14:42 +0900)]
docs/ja_JP: fix typos in submit-checklist.rst
Fix spelling errors in the Japanese translation:
- "Menu attibutes: default value" -> "Menu attributes: default value"
- "Documentaion/ABI/" -> "Documentation/ABI/"
No change in meaning intended.
Signed-off-by: Masaharu Noguchi <nogunix@gmail.com>
Acked-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20260103-b4-practice-docs-typo-v1-1-
d68ad6a22ab5@gmail.com>
Masaharu Noguchi [Sun, 4 Jan 2026 11:58:41 +0000 (20:58 +0900)]
docs/ja_JP: fix translation of freestanding C environment
The current Japanese translation incorrectly implies that the kernel is
independent of the C language.
Translate "freestanding C environment" accurately.
Signed-off-by: Masaharu Noguchi <nogunix@gmail.com>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20260104-ja-howto-v2-2-
8cac525b3dfe@gmail.com>
Masaharu Noguchi [Sun, 4 Jan 2026 11:58:40 +0000 (20:58 +0900)]
docs/ja_JP: fix typos and duplicated phrases in kernel development guide
Fix obvious typos and duplicated phrases in the Japanese translation.
No change in meaning intended.
Acked-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Masaharu Noguchi <nogunix@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20260104-ja-howto-v2-1-
8cac525b3dfe@gmail.com>
Lukas Bulwahn [Thu, 27 Nov 2025 15:43:43 +0000 (16:43 +0100)]
MAINTAINERS: Add doc files on real-time support to Real-time Linux
Commit
f51fe3b7e48c ("Documentation: Add real-time to core-api") adds new
documentation on real-time support, i.e., PREEMPT_RT. So, add a file entry
for that directory to the corresponding section in MAINTAINERS.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251127154343.292156-4-bigeasy@linutronix.de>
Lukas Bulwahn [Thu, 27 Nov 2025 15:43:42 +0000 (16:43 +0100)]
Documentation: update config name in real-time architecture support
Commit
4843a45ef9fe8 ("entry: Rename "kvm" entry code assets to "virt"
to genericize APIs") renames the config KVM_XFER_TO_GUEST_WORK to
VIRT_XFER_TO_GUEST_WORK.
Adjust the documentation to the current situation, and specifically
refer to the new name of the config.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251127154343.292156-3-bigeasy@linutronix.de>
Sebastian Andrzej Siewior [Thu, 27 Nov 2025 15:43:41 +0000 (16:43 +0100)]
Documentation: Add some hardware hints for real-time
Some thoughts on hardware that is used for real-time workload. Certainly
not complete but should cover some of the import topics such as:
- Main memory, caches and the possiblie control given by the hardware.
- What could happen by putting critical hardware behind USB or VirtIO.
- Allowing real-time tasks to consume the CPU entirely without giving
the system some time to breath.
- Networking with what the kernel provides.
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251127154343.292156-2-bigeasy@linutronix.de>
Willy Tarreau [Sat, 29 Nov 2025 14:17:41 +0000 (15:17 +0100)]
Documentation: insist on the plain-text requirement for security reports
As the trend of AI-generated reports is growing, the trend of unreadable
reports in gimmicky formats is following, and we cannot request that
developers rely on online viewers to be able to read a security report
full for formatting tags. Let's just insist on the plain text requirement
a bit more.
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251129141741.19046-1-w@1wt.eu>
Uwe Kleine-König [Wed, 3 Dec 2025 07:43:47 +0000 (08:43 +0100)]
Documentation: Improve wording on requirements for a free Nitrokey
"listed in MAINTAINERS" is not enough to qualify for the free Nitrokey
Start. You have to be listed in an M: entry. Mention that to reduce
confusion for reviewers who wonder why their application fails.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251203074349.
1826233-2-u.kleine-koenig@baylibre.com>
Geert Uytterhoeven [Thu, 4 Dec 2025 15:14:02 +0000 (16:14 +0100)]
Documentation: mailbox: mbox_chan_ops.flush() is optional
When the optional .flush() method was added to the mbox_chan structure,
the documentation was not updated.
Fixes:
a8803d7421cc2be2 ("mailbox: Support blocking transfers in atomic context")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
6a50a5d4f0d0da26e5cccf348550879e53792e6e.
1764861174.git.geert+renesas@glider.be>
Soham Metha [Thu, 4 Dec 2025 03:24:52 +0000 (08:54 +0530)]
Documentation/rv: Fix dead link to monitor_synthesis.rst
The file 'da_monitor_synthesis.rst' was renamed to 'monitor_synthesis.rst' in
commit
f40a7c06020709
("Documentation/rv: Prepare monitor synthesis document for LTL inclusion").
Signed-off-by: Soham Metha <sohammetha01@gmail.com>
Fixes:
f40a7c06020709 ("Documentation/rv: Prepare monitor synthesis document for LTL inclusion")
Acked-by: Gabriele Monaco <gmonaco@redhat.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251204032452.9523-1-sohammetha01@gmail.com>
Shubham Sharma [Sun, 7 Dec 2025 19:56:32 +0000 (01:26 +0530)]
Documentation: arm: keystone: update DT binding reference
Update the device tree binding reference from .txt to YAML.
Binding was converted in commit
20b3c9a403ee ("dt-bindings: arm: Convert ti,keystone to DT schema")
and moved to Documentation/devicetree/bindings/arm/ti/ti,keystone.yaml.
Signed-off-by: Shubham Sharma <slopixelz@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251207195632.68681-1-slopixelz@gmail.com>
Addison English [Mon, 8 Dec 2025 06:51:36 +0000 (01:51 -0500)]
docs: fix typo in clang-format documentation
The clang-format documentation contains a minor spelling issue where
"intended" is used instead of "indented" when describing deeply nested
code. This patch corrects the typo to improve the clarity and consistency.
Signed-off-by: Addison English <addison.englishw@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251208065136.9092-1-addison.englishw@gmail.com>
Steven Price [Thu, 11 Dec 2025 10:48:49 +0000 (10:48 +0000)]
kdoc: allow dots in inline @param names
Inline kernel-doc blocks failed to parse tags containing dots (e.g.
creator.process_name in panfrost_gem.h) because the @name regex only
matched word characters. Modify the single-line pattern to match
doc_inline_sect so it includes \. and parses the same as a multi-line
comment.
Signed-off-by: Steven Price <steven.price@arm.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251211104851.45330-1-steven.price@arm.com>
Andy Shevchenko [Wed, 26 Nov 2025 21:46:07 +0000 (22:46 +0100)]
docs: Update documentation to avoid mentioning of kernel.h
For several years, and still ongoing, the kernel.h is being split
to smaller and narrow headers to avoid "including everything" approach
which is bad in many ways. Since that, documentation missed a few
required updates to align with that work. Do it here.
Note, language translations are left untouched and if anybody willing
to help, please provide path(es) based on the updated English variant.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251126214709.
2322314-1-andriy.shevchenko@linux.intel.com>
Max Nikulin [Tue, 16 Dec 2025 14:17:13 +0000 (21:17 +0700)]
docs: admin: devices: /dev/sr<N> for SCSI CD-ROM
Don't claim that /dev/sr<N> device names for SCSI CD-ROM drives are
deprecated and don't recommend /dev/scd<N> alternate names for them.
/dev/scd<N> device names for SCSI CD-ROM drives are not in use for more
than a decade, see commit [1] that was a part of udev release 174.
Earlier, related rules were volatile, sometimes /dev/scd<N> were syminks
to /dev/sr<N>, sometimes vice versa.
Recognizing of root=/dev/scd<N> kernel command line argument was removed
in kernel 2.5.45 [2].
In the docs /dev/scd<N> became recommended names in 2.6.9 [3].
Mention of these names appeared much earlier in 1.3.22 [4].
[1] https://git.kernel.org/pub/scm/linux/hotplug/udev.git/commit/?id=
d132be4d58
2011-08-12 14:05:19 +0200 Kay Sievers.
rules: remove legacy rules for cdrom and usb printer
[2] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/init?h=v2.5.45&id=
51924607bd
2002-10-29 00:47:58 -0800 Alexander Viro.
[PATCH] removal of root_dev_names[]
[3] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/diff/Documentation/devices.txt?h=v2.6.9-rc4&id=
a74e11ffeda
2004-03-16 15:09:38 -0800 Andrew Morton:
[PATCH] devices.txt: typos and removal of dead devices
[4] https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/tree/Documentation/devices.txt?h=v2.6.9-rc4&id=
8f0ec1f9369
1995-09-01 Linus Torvalds: Import 1.3.22
Signed-off-by: Max Nikulin <manikulin@gmail.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
f0a3e0aa-e4f9-41d3-8931-
57837831d136@gmail.com>
Jonathan Corbet [Mon, 22 Dec 2025 21:52:57 +0000 (14:52 -0700)]
Merge branch 'mauro-vars' into docs-mw
Mauro says:
As suggested and discussed with Randy, this small series add support
for documenting variables using kernel-doc.
- patch 1: add support for the new feature;
- patch 2: extends to support DEFINE_*;
- patch 3: document two media vars;
- patch 4: fix an issue on kernel-doc.rst markups and automarkup;
- patch 5: document it;
- patch 6: better handle DEFINE_ macros when they don't have static/type;
Since version 5, I'm using "c:macro" to describe variables, as it
avoids Sphinx C domain to try parse the variable. This makes it more
flexible and easier to maintain in long term.
Mauro Carvalho Chehab [Tue, 16 Dec 2025 14:26:17 +0000 (15:26 +0100)]
docs: kernel-doc.rst: Parse DEFINE_ macros without prefixes
Currently, the logic for vars require a
type DEFINE_foo();
where type is usually "static".
Make the logic more generic.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Closes: https://lore.kernel.org/linux-doc/
e1dad7e4-a0ca-4be6-a33c-
97b75175c12f@infradead.org/
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
be16e087cbc065fbd041fb6d6f8fa5cf0426cca5.
1765894964.git.mchehab+huawei@kernel.org>
Mauro Carvalho Chehab [Tue, 16 Dec 2025 14:26:16 +0000 (15:26 +0100)]
docs: kernel-doc.rst: document the new "var" kernel-doc markup
Add a description containing the new syntax to document
variables within kernel-doc markups.
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
aa0e3abcd6882a62f3ab9c34033c60fca1c44604.
1765894964.git.mchehab+huawei@kernel.org>
Mauro Carvalho Chehab [Tue, 16 Dec 2025 14:26:15 +0000 (15:26 +0100)]
docs: kernel-doc.rst: don't let automarkup mangle with consts
This document contains several words that tricks automarkup.
Ensure that all of them will be inside a ``const`` markup,
avoiding automarkup to touch them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
a6adfa3d775c1dccc9f80a7b82be003cbc0051d2.
1765894964.git.mchehab+huawei@kernel.org>
Mauro Carvalho Chehab [Tue, 16 Dec 2025 14:26:14 +0000 (15:26 +0100)]
docs: media: v4l2-ioctl.h: document two global variables
The media kAPI has two global variables at v4l2-ioctl.h. Document
them.
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
8ebe25ff579962fec09b586f00e77fae7802985f.
1765894964.git.mchehab+huawei@kernel.org>
Mauro Carvalho Chehab [Tue, 16 Dec 2025 14:26:13 +0000 (15:26 +0100)]
kernel-doc: add support to handle DEFINE_ variables
Improve the parser and output plugin to work with macros,
adding support for the common pattern of using DEFINE_*
to create variables.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
757a45100cfc493984574ff780aa9d90506eecb4.
1765894964.git.mchehab+huawei@kernel.org>
Mauro Carvalho Chehab [Tue, 16 Dec 2025 14:26:12 +0000 (15:26 +0100)]
kernel-doc: add support for handling global variables
Specially on kAPI, sometimes it is desirable to be able to
describe global variables that are part of kAPI.
Documenting vars with Sphinx is simple, as we don't need
to parse a data struct. All we need is the variable
declaration and use native C domain ::c:var: to format it
for us.
Add support for it.
Link: https://lore.kernel.org/linux-doc/491c3022-cef8-4860-a945-c9c4a3b63c09@infradead.org/T/#m947c25d95cb1d96a394410ab1131dc8e9e5013f1
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
fa7d1c61a8de9150f71b318382f1507d3b13848d.
1765894964.git.mchehab+huawei@kernel.org>
Thorsten Blum [Fri, 19 Dec 2025 17:18:26 +0000 (18:18 +0100)]
Documentation: kernel-hacking: Remove comma
The comma is wrong, remove it.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251219171827.44015-2-thorsten.blum@linux.dev>
Chen Pei [Sat, 20 Dec 2025 12:54:34 +0000 (20:54 +0800)]
docs: kbuild: Fix typos in makefiles.rst
The correct command to generate header files is
make headers_install.
Signed-off-by: Chen Pei <cp0613@linux.alibaba.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <
20251220125434.2430-1-cp0613@linux.alibaba.com>
Linus Torvalds [Sun, 21 Dec 2025 23:52:04 +0000 (15:52 -0800)]
Linux 6.19-rc2
Linus Torvalds [Sun, 21 Dec 2025 23:28:59 +0000 (15:28 -0800)]
Merge tag 'coccinelle-6.19' of git://git./linux/kernel/git/jlawall/linux
Pull Coccinelle fixes from Julia Lawall:
"These fix a typo and make the coccicheck script more robust by
ensuring that only compatible semantic patches are executed for the
chosen mode"
* tag 'coccinelle-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
Coccinelle: pm_runtime: Fix typo in report message
scripts: coccicheck: filter *.cocci files by MODE
Linus Torvalds [Sun, 21 Dec 2025 23:21:10 +0000 (15:21 -0800)]
Merge tag 'input-for-v6.19-rc1' of git://git./linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
- a quirk for i8042 to better handle another TUXEDO model
- a quirk to atkbd to handle incorcet behavior of HONOR FMB-P internal
keyboard
- a definition for a new ABS_SND_PROFILE event
- fixes to alps and lkkbd drivers to reliably shut down pending work on
removal
- a fix to apple_z2 driver tightening input report parsing
- a fix for "off-by-one" error when validating config in ti_am335x_tsc
driver
- addition of CRKD Guitars device IDs to xpad driver.
* tag 'input-for-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: ti_am335x_tsc - fix off-by-one error in wire_order validation
Input: xpad - add support for CRKD Guitars
Input: add ABS_SND_PROFILE
Input: apple_z2 - fix reading incorrect reports after exiting sleep
Input: alps - fix use-after-free bugs caused by dev3_register_work
Input: i8042 - add TUXEDO InfinityBook Max Gen10 AMD to i8042 quirk table
Input: atkbd - skip deactivate for HONOR FMB-P's internal keyboard
Input: lkkbd - disable pending work before freeing device
Linus Torvalds [Sun, 21 Dec 2025 23:05:47 +0000 (15:05 -0800)]
Merge tag 'i2c-for-6.19-rc2' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- bcm, pxa, rcar: fix void-pointer-to-enum-cast warning
- new hardware IDs / DT bindings for
- Intel Nova Lake-S
- Mobileye
- Qualcomm SM8750
* tag 'i2c-for-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: qcom-cci: Document SM8750 compatible
i2c: i801: Add support for Intel Nova Lake-S
dt-bindings: i2c: dw: Add Mobileye I2C controllers
i2c: rcar: Fix Wvoid-pointer-to-enum-cast warning
i2c: pxa: Fix Wvoid-pointer-to-enum-cast warning
i2c: bcm-iproc: Fix Wvoid-pointer-to-enum-cast warning
Linus Torvalds [Sun, 21 Dec 2025 22:41:29 +0000 (14:41 -0800)]
Merge tag 'x86-urgent-2025-12-21' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix FPU core dumps on certain CPU models
- Fix htmldocs build warning
- Export TLB tracing event name via header
- Remove unused constant from <linux/mm_types.h>
- Fix comments
- Fix whitespace noise in documentation
- Fix variadic structure's definition to un-confuse UBSAN
- Fix posted MSI interrupts irq_retrigger() bug
- Fix asm build failure with older GCC builds
* tag 'x86-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bug: Fix old GCC compile fails
x86/msi: Make irq_retrigger() functional for posted MSI
x86/platform/uv: Fix UBSAN array-index-out-of-bounds
mm: Remove tlb_flush_reason::NR_TLB_FLUSH_REASONS from <linux/mm_types.h>
x86/mm/tlb/trace: Export the TLB_REMOTE_WRONG_CPU enum in <trace/events/tlb.h>
x86/sgx: Remove unmatched quote in __sgx_encl_extend function comment
x86/boot/Documentation: Fix whitespace noise in boot.rst
x86/fpu: Fix FPU state core dump truncation on CPUs with no extended xfeatures
x86/boot/Documentation: Fix htmldocs build warning due to malformed table in boot.rst
Linus Torvalds [Sun, 21 Dec 2025 22:34:13 +0000 (14:34 -0800)]
Merge tag 'irq-urgent-2025-12-21' of git://git./linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar:
"Fix IRQ thread affinity flags setup regression"
* tag 'irq-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Don't overwrite interrupt thread flags on setup
Thorsten Blum [Sat, 22 Nov 2025 11:48:04 +0000 (12:48 +0100)]
Coccinelle: pm_runtime: Fix typo in report message
s/Unecessary/Unnecessary/
Reviewed-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Songwei Chai [Fri, 6 Jun 2025 06:09:36 +0000 (14:09 +0800)]
scripts: coccicheck: filter *.cocci files by MODE
Enhance the coccicheck script to filter *.cocci files based on the
specified MODE (e.g., report, patch). This ensures that only compatible
semantic patch files are executed, preventing errors such as:
"virtual rule report not supported"
This error occurs when a .cocci file does not define a 'virtual <MODE>'
rule, yet is executed in that mode.
For example:
make coccicheck M=drivers/hwtracing/coresight/ MODE=report
In this case, running "secs_to_jiffies.cocci" would trigger the error
because it lacks support for 'report' mode. With this change, such files
are skipped automatically, improving robustness and developer
experience.
Signed-off-by: Songwei Chai <quic_songchai@quicinc.com>
Reviewed-by: Julia Lawall <Julia.Lawall@inria.fr>
Linus Torvalds [Sun, 21 Dec 2025 06:58:14 +0000 (22:58 -0800)]
Merge tag 'ata-6.19-rc2' of git://git./linux/kernel/git/libata/linux
Pull ata fix from Damien Le Moal:
- Disable link power management (LPM) for a Seagate drive that is
misbehaving when LPM is enabled
* tag 'ata-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: libata-core: Disable LPM on ST2000DM008-2FR102
Linus Torvalds [Sun, 21 Dec 2025 00:54:42 +0000 (16:54 -0800)]
Merge tag 'spi-fix-v6.19-rc1' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A small collection of fixes for various SPI drivers, plus a relaxation
of constraints in the DT for the DesignWare controller to reflect
hardware that's been seen.
There's several fixes for the Cadence QuadSPI driver since a fix
during the last release made some existing issues with error handling
during probe more readily visible"
* tag 'spi-fix-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: mt65xx: Use IRQF_ONESHOT with threaded IRQ
spi: dt-bindings: snps,dw-abp-ssi: Allow up to 16 chip-selects
spi: cadence-quadspi: Fix clock disable on probe failure path
spi: cadence-quadspi: Add error logging for DMA request failure
spi: fsl-cpm: Check length parity before switching to 16 bit mode
spi: mpfs: Fix an error handling path in mpfs_spi_probe()
Eric Dumazet [Fri, 19 Dec 2025 11:20:07 +0000 (11:20 +0000)]
x86/irqflags: Use ASM_OUTPUT_RM in native_save_fl()
clang is generating very inefficient code for native_save_fl() which is
used for local_irq_save() in critical spots.
Allowing the "pop %0" to use memory:
1) forces the compiler to add annoying stack canaries when
CONFIG_STACKPROTECTOR_STRONG=y in many places.
2) Almost always is followed by an immediate "move memory,register"
One good example is _raw_spin_lock_irqsave, with 8 extra instructions
ffffffff82067a30 <_raw_spin_lock_irqsave>:
ffffffff82067a30: ...
ffffffff82067a39: 53 push %rbx
// Three instructions to ajust the stack, read the per-cpu canary
// and copy it to 8(%rsp)
ffffffff82067a3a: 48 83 ec 10 sub $0x10,%rsp
ffffffff82067a3e: 65 48 8b 05 da 15 45 02 mov %gs:0x24515da(%rip),%rax # <__stack_chk_guard>
ffffffff82067a46: 48 89 44 24 08 mov %rax,0x8(%rsp)
ffffffff82067a4b: 9c pushf
// instead of pop %rbx, compiler uses 2 instructions.
ffffffff82067a4c: 8f 04 24 pop (%rsp)
ffffffff82067a4f: 48 8b 1c 24 mov (%rsp),%rbx
ffffffff82067a53: fa cli
ffffffff82067a54: b9 01 00 00 00 mov $0x1,%ecx
ffffffff82067a59: 31 c0 xor %eax,%eax
ffffffff82067a5b: f0 0f b1 0f lock cmpxchg %ecx,(%rdi)
ffffffff82067a5f: 75 1d jne
ffffffff82067a7e <_raw_spin_lock_irqsave+0x4e>
// three instructions to check the stack canary
ffffffff82067a61: 65 48 8b 05 b7 15 45 02 mov %gs:0x24515b7(%rip),%rax # <__stack_chk_guard>
ffffffff82067a69: 48 3b 44 24 08 cmp 0x8(%rsp),%rax
ffffffff82067a6e: 75 17 jne
ffffffff82067a87
...
// One extra instruction to adjust the stack.
ffffffff82067a73: 48 83 c4 10 add $0x10,%rsp
...
// One more instruction in case the stack was mangled.
ffffffff82067a87: e8 a4 35 ff ff call
ffffffff8205b030 <__stack_chk_fail>
This patch changes nothing for gcc, but for clang saves ~20000 bytes of text
even though more functions are inlined.
$ size vmlinux.gcc.before vmlinux.gcc.after vmlinux.clang.before vmlinux.clang.after
text data bss dec hex filename
45565821 25005462 4704800 75276083 47c9f33 vmlinux.gcc.before
45565821 25005462 4704800 75276083 47c9f33 vmlinux.gcc.after
45121072 24638617 5533040 75292729 47ce039 vmlinux.clang.before
45093887 24638633 5536808 75269328 47c84d0 vmlinux.clang.after
$ scripts/bloat-o-meter -t vmlinux.clang.before vmlinux.clang.after
add/remove: 1/2 grow/shrink: 21/533 up/down: 2250/-22112 (-19862)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Dumazet [Fri, 19 Dec 2025 11:20:06 +0000 (11:20 +0000)]
clang: work around asm output constraint problems
Work around clang problems with "=rm" asm constraint.
clang seems to always chose the memory output, while it is almost
always the worst choice.
Add ASM_OUTPUT_RM so that we can replace "=rm" constraint
where it matters for clang, while not penalizing gcc.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 20 Dec 2025 20:45:35 +0000 (12:45 -0800)]
Merge tag 'xfs-fixes-6.19-rc2' of git://git./fs/xfs/xfs-linux
Pull xfs fixes from Carlos Maiolino:
"This contains a few fixes for zoned devices support, an UAF and a
compiler warning, and some cleaning up"
* tag 'xfs-fixes-6.19-rc2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: fix the zoned RT growfs check for zone alignment
xfs: validate that zoned RT devices are zone aligned
xfs: fix XFS_ERRTAG_FORCE_ZERO_RANGE for zoned file system
xfs: fix a memory leak in xfs_buf_item_init()
xfs: fix stupid compiler warning
xfs: fix a UAF problem in xattr repair
xfs: ignore discard return value
Linus Torvalds [Sat, 20 Dec 2025 20:22:53 +0000 (12:22 -0800)]
Merge tag 'hwmon-for-v6.19-rc2' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- ltc4282: Fix reset_history file permissions
- ds620: Update broken Datasheet URL in driver documentation
- tmp401: Fix overflow caused by default conversion rate value
- ibmpex: Fix use-after-free in high/low store
- dell-smm: Limit fan multiplier to avoid overflow
* tag 'hwmon-for-v6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (ltc4282): Fix reset_history file permissions
hwmon: (DS620) Update broken Datasheet URL in driver documentation
hwmon: (tmp401) fix overflow caused by default conversion rate value
hwmon: (ibmpex) fix use-after-free in high/low store
hwmon: (dell-smm) Limit fan multiplier to avoid overflow
Linus Torvalds [Sat, 20 Dec 2025 20:18:32 +0000 (12:18 -0800)]
Merge tag 'mmc-v6.19-rc1' of git://git./linux/kernel/git/ulfh/mmc
Pull MMC host fixes from Ulf Hansson:
- sdhci-esdhc-imx: Fix build problem dependency
- sdhci-of-arasan: Increase card-detect stable timeout to 2 seconds
- sdhci-of-aspeed: Fix DT doc for missing properties
* tag 'mmc-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-esdhc-imx: add alternate ARCH_S32 dependency to Kconfig
mmc: sdhci-of-arasan: Increase CD stable timeout to 2 seconds
dt-bindings: mmc: sdhci-of-aspeed: Switch ref to sdhci-common.yaml
Linus Torvalds [Sat, 20 Dec 2025 20:08:02 +0000 (12:08 -0800)]
Merge tag 'drm-fixes-2025-12-20' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"rc2 fixes for the week, mostly xe, with amdgpu as usual. Then a
smattering of small fixes across the core/tests/panel and amdxdna.
I expect things will be quiet for rc3/4 as teams take a break, and I'm
travelling but will keep an eye on things.
core:
- fix gem handle leak on DRM_IOCTL_GEM_CHANGE_HANDLE
tests:
- add EDEADLK handling
amdgpu:
- Fix no_console_suspend handling
- DCN 3.5.x seamless boot fixes
- DP audio fix
- Fix race in GPU recovery
- SMU 14 OD fix
amdkfd:
- Event fix
xe:
- Limit num_syncs to prevent oversized kernel allocations
- Disallow 0 OA property values
- Disallow 0 EU stall property values
- Fix kobject leak
- Workaround
- Loop variable reference fix
- Fix a CONFIG corner-case incorrect number of argument
- Skip reason prefix while emitting array
- VF migration fix
- Fix context in mei interrupt top half
- Don't include the CCS metadata in the dma-buf sg-table
- VF queueing recovery work fix
- Increase TDF timeout
- GT reset registers vs scheduler ordering fix
- Adjust long-running workload timeslices
- Always set OA_OAGLBCTXCTRL_COUNTER_RESUME
- Fix a return value
- Drop preempt-fences when destroying imported dma-bufs
- Use usleep_range for accurate long-running workload timeslicing
amdxdna:
- don't load virtualized
panel:
- fix visionox-rm69299 Kconfig dependency
- sony-td4353-jdi probing fix"
* tag 'drm-fixes-2025-12-20' of https://gitlab.freedesktop.org/drm/kernel: (34 commits)
drm/xe: Use usleep_range for accurate long-running workload timeslicing
drm/xe: Drop preempt-fences when destroying imported dma-bufs.
drm/xe/eustall: Disallow 0 EU stall property values
drm/xe/oa: Disallow 0 OA property values
drm/xe/xe_sriov_vfio: Fix return value in xe_sriov_vfio_migration_supported()
drm/xe/oa: Always set OAG_OAGLBCTXCTRL_COUNTER_RESUME
drm/xe: Adjust long-running workload timeslices to reasonable values
drm/xe/oa: Limit num_syncs to prevent oversized allocations
drm/xe: Limit num_syncs to prevent oversized allocations
drm/amdkfd: Fix improper NULL termination of queue restore SMI event string
drm/amd/pm: restore SCLK settings after S0ix resume
drm/amdgpu: fix a job->pasid access race in gpu recovery
drm/amd/display: Fix DP no audio issue
drm/amd/display: Fix scratch registers offsets for DCN351
drm/amd/display: Fix scratch registers offsets for DCN35
drm/amd: Resume the device in thaw() callback when console suspend is disabled
drm/panel: visionox-rm69299: Depend on BACKLIGHT_CLASS_DEVICE
accel/amdxdna: Block running under a hypervisor
drm/panel: sony-td4353-jdi: Enable prepare_prev_first
drm/xe: Restore engine registers before restarting schedulers after GT reset
...
Linus Torvalds [Sat, 20 Dec 2025 19:59:06 +0000 (11:59 -0800)]
Merge tag 'linux_kselftest-kunit-fixes-6.19-rc3' of git://git./linux/kernel/git/shuah/linux-kselftest
Pull kunit fixes from Shuah Khan:
"Drop unused parameter from kunit_device_register_internal and make
FAULT_TEST default to n when PANIC_ON_OOPS"
* tag 'linux_kselftest-kunit-fixes-6.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: make FAULT_TEST default to n when PANIC_ON_OOPS
kunit: Drop unused parameter from kunit_device_register_internal
Linus Torvalds [Sat, 20 Dec 2025 19:49:49 +0000 (11:49 -0800)]
Merge tag 'devicetree-fixes-for-6.19-1' of git://git./linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix warnings for Mediatek overlays not getting applied
- Fix regression in handling elfcorehdr region
- Fix creating cpufreq device on OPPv1 platforms
- Add GE7800 GPU in Renesas R-Car V3U
- Simplify dma-coherent property in TI display bindings
- Allow "reg" in sprd,sc9860-clk binding
- Update Linus Walleij's email
* tag 'devicetree-fixes-for-6.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
arm64: dts: mediatek: Apply mt8395-radxa DT overlay at build time
arm64: dts: mediatek: mt7988: add dtbs with applied overlays for bpi-r4 (pro)
arm64: dts: mediatek: mt7986: add dtbs with applied overlays for bpi-r3
dt-bindings: Updates Linus Walleij's mail address
dt-bindings: gpu: img,powervr-rogue: Document GE7800 GPU in Renesas R-Car V3U
cpufreq: dt-platdev: Fix creating device on OPPv1 platforms
dt-bindings: clock: sprd,sc9860-clk: Allow "reg" for gate clocks
dt-bindings: display/ti: Simplify dma-coherent property
arm64: kdump: Fix elfcorehdr overlap caused by reserved memory processing reorder
Linus Torvalds [Sat, 20 Dec 2025 19:40:51 +0000 (11:40 -0800)]
Merge tag 'mips-fixes_6.19_1' of git://git./linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- Fix build error for Alchemy
- Fix reference leak
* tag 'mips-fixes_6.19_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: Fix a reference leak bug in ip22_check_gio()
MIPS: Alchemy: Remove bogus static/inline specifiers
Linus Torvalds [Sat, 20 Dec 2025 19:34:37 +0000 (11:34 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"Two left-over updates that could not go into -rc1 due to conflicts
with other series:
- Simplify checks in arch_kfence_init_pool() since
force_pte_mapping() already takes BBML2-noabort (break-before-make
Level 2 with no aborts generated) into account
- Remove unneeded SVE/SME fallback preserve/store handling in the
arm64 EFI. With the recent updates, the fallback path is only taken
for EFI runtime calls from hardirq or NMI contexts. In practice,
this only happens under panic/oops/emergency_restart() and no
restoring of the user state expected.
There's a corresponding lkdtm update to trigger a BUG() or panic()
from hardirq context together with a fixup not to confuse
clang/objtool about the control flow
GCS (guarded control stacks) fix: flush the GCS locking state on exec,
otherwise the new task will not be able to enable GCS (locked as
disabled)"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
lkdtm/bugs: Do not confuse the clang/objtool with busy wait loop
arm64/gcs: Flush the GCS locking state on exec
arm64/efi: Remove unneeded SVE/SME fallback preserve/store handling
lkdtm/bugs: Add cases for BUG and PANIC occurring in hardirq context
arm64: mm: Simplify check in arch_kfence_init_pool()
Linus Torvalds [Sat, 20 Dec 2025 19:31:37 +0000 (11:31 -0800)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull x86 kvm fixes from Paolo Bonzini:
"x86 fixes. Everyone else is already in holiday mood apparently.
- Add a missing 'break' to fix param parsing in the rseq selftest
- Apply runtime updates to the _current_ CPUID when userspace is
setting CPUID, e.g. as part of vCPU hotplug, to fix a false
positive and to avoid dropping the pending update
- Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot, as
it's not supported by KVM and leads to a use-after-free due to KVM
failing to unbind the memslot from the previously-associated
guest_memfd instance
- Harden against similar KVM_MEM_GUEST_MEMFD goofs, and prepare for
supporting flags-only changes on KVM_MEM_GUEST_MEMFD memlslots,
e.g. for dirty logging
- Set exit_code[63:32] to -1 (all 0xffs) when synthesizing a nested
SVM_EXIT_ERR (a.k.a. VMEXIT_INVALID) #VMEXIT, as VMEXIT_INVALID is
defined as -1ull (a 64-bit value)
- Update SVI when activating APICv to fix a bug where a
post-activation EOI for an in-service IRQ would effective be lost
due to SVI being stale
- Immediately refresh APICv controls (if necessary) on a nested
VM-Exit instead of deferring the update via KVM_REQ_APICV_UPDATE,
as the request is effectively ignored because KVM thinks the vCPU
already has the correct APICv settings"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: nVMX: Immediately refresh APICv controls as needed on nested VM-Exit
KVM: VMX: Update SVI during runtime APICv activation
KVM: nSVM: Set exit_code_hi to -1 when synthesizing SVM_EXIT_ERR (failed VMRUN)
KVM: nSVM: Clear exit_code_hi in VMCB when synthesizing nested VM-Exits
KVM: Harden and prepare for modifying existing guest_memfd memslots
KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot
KVM: selftests: Add a CPUID testcase for KVM_SET_CPUID2 with runtime updates
KVM: x86: Apply runtime updates to current CPUID during KVM_SET_CPUID{,2}
KVM: selftests: Add missing "break" in rseq_test's param parsing
Linus Torvalds [Sat, 20 Dec 2025 19:29:32 +0000 (11:29 -0800)]
Merge tag 'for-linus-6.19-rc2-tag' of git://git./linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"Just a single patch fixing a sparse warning"
* tag 'for-linus-6.19-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: Fix sparse warning in enlighten_pv.c
Linus Torvalds [Sat, 20 Dec 2025 19:24:42 +0000 (11:24 -0800)]
Merge tag 'slab-for-6.19-rc2' of git://git./linux/kernel/git/vbabka/slab
Pull slab fix from Vlastimil Babka:
- A stable fix for a missing tag reset that can happen in
kfree_nolock() with KASAN+SLUB_TINY configs (Deepanshu Kartikey)
* tag 'slab-for-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slub: reset KASAN tag in defer_free() before accessing freed memory
Linus Torvalds [Sat, 20 Dec 2025 19:18:32 +0000 (11:18 -0800)]
Merge tag 'iommu-fixes-v6.19-rc1' of git://git./linux/kernel/git/iommu/linux
Pull iommu fixes from Joerg Roedel:
- iommupt: Fix an oops found by syzcaller in the new generic
IO-page-table code.
- AMD-Vi: Fix IO_PAGE_FAULTs in kdump kernels triggered by re-using
domain-ids from previous kernel.
* tag 'iommu-fixes-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
amd/iommu: Make protection domain ID functions non-static
amd/iommu: Preserve domain ids inside the kdump kernel
iommupt: Return ERR_PTR from _table_alloc()
Linus Torvalds [Sat, 20 Dec 2025 17:48:56 +0000 (09:48 -0800)]
Merge tag 'block-6.19-
20251218' of git://git./linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- ublk selftests for missing coverage
- two fixes for the block integrity code
- fix for the newly added newly added PR read keys ioctl, limiting the
memory that can be allocated
- work around for a deadlock that can occur with ublk, where partition
scanning ends up recursing back into file closure, which needs the
same mutex grabbed. Not the prettiest thing in the world, but an
acceptable work-around until we can eliminate the reliance on
disk->open_mutex for this
- fix for a race between enabling writeback throttling and new IO
submissions
- move a bit of bio flag handling code. No changes, but needed for a
patchset for a future kernel
- fix for an init time id leak failure in rnbd
- loop/zloop state check fix
* tag 'block-6.19-
20251218' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
block: validate interval_exp integrity limit
block: validate pi_offset integrity limit
block: rnbd-clt: Fix leaked ID in init_dev()
ublk: fix deadlock when reading partition table
block: add allocation size check in blkdev_pr_read_keys()
Documentation: admin-guide: blockdev: replace zone_capacity with zone_capacity_mb when creating devices
zloop: use READ_ONCE() to read lo->lo_state in queue_rq path
loop: use READ_ONCE() to read lo->lo_state without locking
block: fix race between wbt_enable_default and IO submission
selftests: ublk: add user copy test cases
selftests: ublk: add support for user copy to kublk
selftests: ublk: forbid multiple data copy modes
selftests: ublk: don't share backing files between ublk servers
selftests: ublk: use auto_zc for PER_IO_DAEMON tests in stress_04
selftests: ublk: fix fio arguments in run_io_and_recover()
selftests: ublk: remove unused ios map in seq_io.bt
selftests: ublk: correct last_rw map type in seq_io.bt
selftests: ublk: fix overflow in ublk_queue_auto_zc_fallback()
block: move around bio flagging helpers
Linus Torvalds [Sat, 20 Dec 2025 17:38:56 +0000 (09:38 -0800)]
Merge tag 'io_uring-6.19-
20251218' of git://git./linux/kernel/git/axboe/linux
Pull io_uring fix from Jens Axboe:
"Just a single fix this week, for an issue with the calculation of the
number of segments in the ublk kbuf import path"
* tag 'io_uring-6.19-
20251218' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring: fix nr_segs calculation in io_import_kbuf
Nuno Sá [Fri, 19 Dec 2025 16:11:05 +0000 (16:11 +0000)]
hwmon: (ltc4282): Fix reset_history file permissions
The reset_history attributes are write only. Hence don't report them as
readable just to return -EOPNOTSUPP later on.
Fixes:
cbc29538dbf7 ("hwmon: Add driver for LTC4282")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20251219-ltc4282-fix-reset-history-v1-1-8eab974c124b@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Rob Herring (Arm) [Fri, 5 Dec 2025 21:59:38 +0000 (22:59 +0100)]
arm64: dts: mediatek: Apply mt8395-radxa DT overlay at build time
It's a requirement that DT overlays be applied at build time in order to
validate them as overlays are not validated on their own.
Add missing target for mt8395-radxa hd panel overlay.
Fixes:
4c8ff61199a7 ("arm64: dts: mediatek: mt8395-radxa-nio-12l: Add Radxa 8 HD panel")
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Acked-by: AngeloGioacchino Del Regno <angelogiaocchino.delregno@collabora.com>
Link: https://patch.msgid.link/20251205215940.19287-1-linux@fw-web.de
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Frank Wunderlich [Wed, 19 Nov 2025 17:51:23 +0000 (18:51 +0100)]
arm64: dts: mediatek: mt7988: add dtbs with applied overlays for bpi-r4 (pro)
Build devicetree binaries for testing overlays and providing users
full dtb without using overlays for Bananapi R4 (pro) variants.
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://patch.msgid.link/20251119175124.48947-3-linux@fw-web.de
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Frank Wunderlich [Wed, 19 Nov 2025 17:51:22 +0000 (18:51 +0100)]
arm64: dts: mediatek: mt7986: add dtbs with applied overlays for bpi-r3
Build devicetree binaries for testing overlays and providing users
full dtb without using overlays.
Suggested-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Fixes:
a58c36806741 ("arm64: dts: mediatek: mt7988a-bpi-r4pro: Add mmc overlays")
Fixes:
dec929e61a42 ("arm64: dts: mediatek: mt7988a-bpi-r4-pro: Add PCIe overlays")
Fixes:
714a80ced07a ("arm64: dts: mediatek: mt7988a-bpi-r4: Add dt overlays for sd + emmc")
Fixes:
312189ebb802 ("arm64: dts: mt7986: add overlay for SATA power socket on BPI-R3")
Fixes:
8e01fb15b815 ("arm64: dts: mt7986: add Bananapi R3")
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251119175124.48947-2-linux@fw-web.de
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Catalin Marinas [Fri, 19 Dec 2025 15:09:09 +0000 (15:09 +0000)]
lkdtm/bugs: Do not confuse the clang/objtool with busy wait loop
Since commit
eb972eab0794 ("lkdtm/bugs: Add cases for BUG and PANIC
occurring in hardirq context"), building with clang for x86_64 results
in the following warnings:
vmlinux.o: warning: objtool: lkdtm_PANIC_IN_HARDIRQ(): unexpected end of section .text.lkdtm_PANIC_IN_HARDIRQ
vmlinux.o: warning: objtool: lkdtm_BUG_IN_HARDIRQ(): unexpected end of section .text.lkdtm_BUG_IN_HARDIRQ
caused by busy "while (wait_for_...);" loops. Add READ_ONCE() and
cpu_relax() to better indicate the intention and avoid any unwanted
compiler optimisations.
Fixes:
eb972eab0794 ("lkdtm/bugs: Add cases for BUG and PANIC occurring in hardirq context")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/
202512190111.jxFSqxUH-lkp@intel.com/
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Sairaj Kodilkar [Fri, 21 Nov 2025 09:11:16 +0000 (14:41 +0530)]
amd/iommu: Make protection domain ID functions non-static
So that both iommu.c and init.c can utilize them. Also define a new
function 'pdom_id_destroy()' to destroy 'pdom_ids' instead of directly
calling ida functions.
Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Sairaj Kodilkar [Fri, 21 Nov 2025 09:11:15 +0000 (14:41 +0530)]
amd/iommu: Preserve domain ids inside the kdump kernel
Currently AMD IOMMU driver does not reserve domain ids programmed in the
DTE while reusing the device table inside kdump kernel. This can cause
reallocation of these domain ids for newer domains that are created by
the kdump kernel, which can lead to potential IO_PAGE_FAULTs
Hence reserve these ids inside pdom_ids.
Fixes:
38e5f33ee359 ("iommu/amd: Reuse device table for kdump")
Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reported-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Junjie Cao [Fri, 19 Dec 2025 05:56:59 +0000 (21:56 -0800)]
Input: ti_am335x_tsc - fix off-by-one error in wire_order validation
The current validation 'wire_order[i] > ARRAY_SIZE(config_pins)' allows
wire_order[i] to equal ARRAY_SIZE(config_pins), which causes out-of-bounds
access when used as index in 'config_pins[wire_order[i]]'.
Since config_pins has 4 elements (indices 0-3), the valid range for
wire_order should be 0-3. Fix the off-by-one error by using >= instead
of > in the validation check.
Signed-off-by: Junjie Cao <junjie.cao@intel.com>
Link: https://patch.msgid.link/20251114062817.852698-1-junjie.cao@intel.com
Fixes:
bb76dc09ddfc ("input: ti_am33x_tsc: Order of TSC wires, made configurable")
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Sanjay Govind [Sat, 29 Nov 2025 07:37:11 +0000 (20:37 +1300)]
Input: xpad - add support for CRKD Guitars
Add support for various CRKD Guitar Controllers.
Signed-off-by: Sanjay Govind <sanjay.govind9@gmail.com>
Link: https://patch.msgid.link/20251129073720.2750-2-sanjay.govind9@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Gergo Koteles [Thu, 13 Nov 2025 16:02:58 +0000 (17:02 +0100)]
Input: add ABS_SND_PROFILE
ABS_SND_PROFILE used to describe the state of a multi-value sound profile
switch. This will be used for the alert-slider on OnePlus phones or other
phones.
Profile values added as SND_PROFLE_(SILENT|VIBRATE|RING) identifiers
to input-event-codes.h so they can be used from DTS.
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Tested-by: Guido Günther <agx@sigxcpu.org> # oneplus,fajita & oneplus,enchilada
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Link: https://patch.msgid.link/20251113-op6-tri-state-v8-1-54073f3874bc@ixit.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dave Airlie [Fri, 19 Dec 2025 00:55:49 +0000 (10:55 +1000)]
Merge tag 'drm-xe-fixes-2025-12-19' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
UAPI Changes:
- Limit num_syncs to prevent oversized kernel allocations (Shuicheng)
- Disallow 0 OA property values (Ashutosh)
- Disallow 0 EU stall property values (Ashutosh)
Driver Changes:
- Fix kobject leak (Shuicheng)
- Workaround (Vinay)
- Loop variable reference fix (Matt Brost)
- Fix a CONFIG corner-case incorrect number of arguments (Arnd Bergmann)
- Skip reason prefix while emitting array (Raag)
- VF migration fix (Tomasz)
- Fix context in mei interrupt top half (Junxiao)
- Don't include the CCS metadata in the dma-buf sg-table (Thomas)
- VF queueing recovery work fix (Satyanarayana)
- Increase TDF timeout (Jagmeet)
- GT reset registers vs scheduler ordering fix (Jan)
- Adjust long-running workload timeslices (Matt Brost)
- Always set OA_OAGLBCTXCTRL_COUNTER_RESUME (Ashutosh)
- Fix a return value (Dan Carpenter)
- Drop preempt-fences when destroying imported dma-bufs (Thomas)
- Use usleep_range for accurate long-running workload timeslicing (Matthew)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/aUSMlQ4iruzm0NQR@fedora
Dave Airlie [Thu, 18 Dec 2025 21:32:21 +0000 (07:32 +1000)]
Merge tag 'drm-misc-fixes-2025-12-18' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
drm-misc-fixes for v6.19-rc2:
- Add -EDEADLK handling in drm unit tests.
- Plug DRM_IOCTL_GEM_CHANGE_HANDLE leak.
- Fix regression in sony-td4353-jdi.
- Kconfig fix for visionox-rm69299.
- Do not load amdxdna when running virtualized.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/21861d1b-54bf-4853-9c35-97abe3c5deba@linux.intel.com
Linus Torvalds [Thu, 18 Dec 2025 21:30:55 +0000 (09:30 +1200)]
Merge tag 'trace-v6.19-rc1' of git://git./linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Add Documentation/core-api/tracepoint.rst to TRACING in MAINTAINERS
file
Updates to the tracepoint.rst document should be reviewed by the
tracing maintainers.
- Fix warning triggered by perf attaching to synthetic events
The synthetic events do not add a function to be registered when perf
attaches to them. This causes a warning when perf registers a
synthetic event and passes a NULL pointer to the tracepoint register
function.
Ideally synthetic events should be updated to work with perf, but as
that's a feature and not a bug fix, simply now return -ENODEV when
perf tries to register an event that has a NULL pointer for its
function. This no longer causes a kernel warning and simply causes
the perf code to fail with an error message.
- Fix 32bit overflow in option flag test
The option's flags changed from 32 bits in size to 64 bits in size.
Fix one of the places that shift 1 by the option bit number to to be
1ULL.
- Fix the output of printing the direct jmp functions
The enabled_functions that shows how functions are being attached by
ftrace wasn't updated to accommodate the new direct jmp trampolines
that set the LSB of the pointer, and outputs garbage. Update the
output to handle the direct jmp trampolines.
* tag 'trace-v6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ftrace: Fix address for jmp mode in t_show()
tracing: Fix UBSAN warning in __remove_instance()
tracing: Do not register unsupported perf events
MAINTAINERS: add tracepoint core-api doc files to TRACING
Linus Torvalds [Thu, 18 Dec 2025 20:39:48 +0000 (08:39 +1200)]
Merge tag 'libcrypto-fixes-for-linus' of git://git./linux/kernel/git/ebiggers/linux
Pull crypto library fixes from Eric Biggers:
- Fix a performance issue with the scoped_ksimd() macro (new in 6.19)
where it unnecessarily initialized the entire fpsimd state.
- Add a missing gitignore entry for a generated file added in 6.18.
* tag 'libcrypto-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
lib/crypto: riscv: Add poly1305-core.S to .gitignore
arm64/simd: Avoid pointless clearing of FP/SIMD buffer
Linus Torvalds [Thu, 18 Dec 2025 20:37:08 +0000 (08:37 +1200)]
Merge tag 'acpi-6.19-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These add a missing PCC check for guaranteed_perf in the ACPI CPPC
library and fix a static local variable access race condition in
acpi_pcc_address_space_setup() (Pengjie Zhang)"
* tag 'acpi-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: PCC: Fix race condition by removing static qualifier
ACPI: CPPC: Fix missing PCC check for guaranteed_perf
Linus Torvalds [Thu, 18 Dec 2025 20:28:02 +0000 (08:28 +1200)]
Merge tag 'pm-6.19-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix three issues in the power capping code including one recent
regression and a runtime PM framework regression introduced during the
6.17 development cycle:
- Fix CPU hotplug locking deadlock reported by lockdep after a recent
update of the Intel RAPL power capping driver (Srinivas Pandruvada)
- Fix sscanf() error return value handling in the power capping core
and a race condition in register_control_type() (Sumeet Pawnikar)
- Fix a concurrent bit field update issue in the runtime PM core code
by only updating the bit field in question when runtime PM is
disabled (Rafael Wysocki)"
* tag 'pm-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
powercap: intel_rapl: Fix possible recursive lock warning
PM: runtime: Do not clear needs_force_resume with enabled runtime PM
powercap: fix sscanf() error return value handling
powercap: fix race condition in register_control_type()
Linus Torvalds [Thu, 18 Dec 2025 20:23:23 +0000 (08:23 +1200)]
Merge tag 'thermal-6.19-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"These enable a new hardware feature in the int340x thermal driver and
fix up comments in the thermal core code:
- Set a feature flag in the int340x thermal driver to enable the
power slider interface for Wildcat Lake processors (Srinivas
Pandruvada)
- Fix typo and indentation in comments in the thermal core (Thorsten
Blum)"
* tag 'thermal-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: core: Fix typo and indentation in comments
thermal: intel: int340x: Enable power slider interface for Wildcat Lake
Sasha Finkelstein [Thu, 18 Dec 2025 18:15:23 +0000 (10:15 -0800)]
Input: apple_z2 - fix reading incorrect reports after exiting sleep
Under certain conditions (more prevalent after a suspend/resume cycle),
the touchscreen controller can send the "boot complete" interrupt before
it actually finished booting. In those cases, attempting to read touch
data resuls in a stream of "not ready" messages being read and
interpreted as a touch report. Check that the response is in fact a
touch report and discard it otherwise.
Reported-by: pitust <piotr@stelmaszek.com>
Closes: https://oftc.catirclogs.org/asahi/2025-12-17#
34878715;
Fixes:
471a92f8a21a ("Input: apple_z2 - add a driver for Apple Z2 touchscreens")
Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
Link: https://patch.msgid.link/20251218-z2-init-fix-v1-1-48e3aa239caf@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Linus Torvalds [Thu, 18 Dec 2025 20:11:53 +0000 (08:11 +1200)]
Merge tag 'for-linus-iommufd' of git://git./linux/kernel/git/jgg/iommufd
Pull iommufd fixes from Jason Gunthorpe:
"A few minor fixes, other than the randconfig fix this is only relevant
to test code, not releases:
- Randconfig failure if CONFIG_DMA_SHARED_BUFFER is not set
- Remove gcc warning in kselftest
- Fix a refcount leak on an error path in the selftest support code
- Fix missing overflow checks in the selftest support code"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
iommufd/selftest: Check for overflow in IOMMU_TEST_OP_ADD_RESERVED
iommufd/selftest: Do not leak the hwpt if IOMMU_TEST_OP_MD_CHECK_MAP fails
iommufd/selftest: Make it clearer to gcc that the access is not out of bounds
iommufd: Fix building without dmabuf
Linus Torvalds [Thu, 18 Dec 2025 19:55:35 +0000 (07:55 +1200)]
Merge tag 'net-6.19-rc2' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter and CAN.
Current release - regressions:
- netfilter: nf_conncount: fix leaked ct in error paths
- sched: act_mirred: fix loop detection
- sctp: fix potential deadlock in sctp_clone_sock()
- can: fix build dependency
- eth: mlx5e: do not update BQL of old txqs during channel
reconfiguration
Previous releases - regressions:
- sched: ets: always remove class from active list before deleting it
- inet: frags: flush pending skbs in fqdir_pre_exit()
- netfilter: nf_nat: remove bogus direction check
- mptcp:
- schedule rtx timer only after pushing data
- avoid deadlock on fallback while reinjecting
- can: gs_usb: fix error handling
- eth:
- mlx5e:
- avoid unregistering PSP twice
- fix double unregister of HCA_PORTS component
- bnxt_en: fix XDP_TX path
- mlxsw: fix use-after-free when updating multicast route stats
Previous releases - always broken:
- ethtool: avoid overflowing userspace buffer on stats query
- openvswitch: fix middle attribute validation in push_nsh() action
- eth:
- mlx5: fw_tracer, validate format string parameters
- mlxsw: spectrum_router: fix neighbour use-after-free
- ipvlan: ignore PACKET_LOOPBACK in handle_mode_l2()
Misc:
- Jozsef Kadlecsik retires from maintaining netfilter
- tools: ynl: fix build on systems with old kernel headers"
* tag 'net-6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (83 commits)
net: hns3: add VLAN id validation before using
net: hns3: using the num_tqps to check whether tqp_index is out of range when vf get ring info from mbx
net: hns3: using the num_tqps in the vf driver to apply for resources
net: enetc: do not transmit redirected XDP frames when the link is down
selftests/tc-testing: Test case exercising potential mirred redirect deadlock
net/sched: act_mirred: fix loop detection
sctp: Clear inet_opt in sctp_v6_copy_ip_options().
sctp: Fetch inet6_sk() after setting ->pinet6 in sctp_clone_sock().
net/handshake: duplicate handshake cancellations leak socket
net/mlx5e: Don't include PSP in the hard MTU calculations
net/mlx5e: Do not update BQL of old txqs during channel reconfiguration
net/mlx5e: Trigger neighbor resolution for unresolved destinations
net/mlx5e: Use ip6_dst_lookup instead of ipv6_dst_lookup_flow for MAC init
net/mlx5: Serialize firmware reset with devlink
net/mlx5: fw_tracer, Handle escaped percent properly
net/mlx5: fw_tracer, Validate format string parameters
net/mlx5: Drain firmware reset in shutdown callback
net/mlx5: fw reset, clear reset requested on drain_fw_reset
net: dsa: mxl-gsw1xx: manually clear RANEG bit
net: dsa: mxl-gsw1xx: fix .shutdown driver operation
...
Linus Torvalds [Thu, 18 Dec 2025 19:50:20 +0000 (07:50 +1200)]
Merge tag 'v6.19-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- important fix for reconnect problem
- minor cleanup
* tag 'v6.19-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number
smb: move some SMB1 definitions into common/smb1pdu.h
smb: align durable reconnect v2 context to 8 byte boundary
Linus Torvalds [Thu, 18 Dec 2025 19:41:17 +0000 (07:41 +1200)]
Merge tag 'fsnotify_for_v6.19-rc2' of git://git./linux/kernel/git/jack/linux-fs
Pull fsnotify fixes from Jan Kara:
"Two fsnotify fixes.
The fix from Ahelenia makes sure we generate event when modifying
inode flags, the fix from Amir disables sending of events from device
inodes to their parent directory as it could concievably create a
usable side channel attack in case of some devices and so far we
aren't aware of anybody depending on the functionality"
* tag 'fsnotify_for_v6.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fs: send fsnotify_xattr()/IN_ATTRIB from vfs_fileattr_set()/chattr(1)
fsnotify: do not generate ACCESS/MODIFY events on child for special files
Rafael J. Wysocki [Thu, 18 Dec 2025 19:31:10 +0000 (20:31 +0100)]
Merge branch 'pm-powercap'
Merge power capping fixes for 6.19-rc2:
- Fix CPU hotplug locking deadlock reported by lockdep after a recent
update of the Intel RAPL power capping driver (Srinivas Pandruvada)
- Fix sscanf() error return value handling in the power capping core
and a race condition in register_control_type() (Sumeet Pawnikar)
* pm-powercap:
powercap: intel_rapl: Fix possible recursive lock warning
powercap: fix sscanf() error return value handling
powercap: fix race condition in register_control_type()
Okan Akyuz [Mon, 15 Dec 2025 20:44:22 +0000 (20:44 +0000)]
hwmon: (DS620) Update broken Datasheet URL in driver documentation
The URL for the DS620 datasheet has changed. Update it to reflect the
current location.
Signed-off-by: Okan Akyuz <okan.akyuz.linux@gmail.com>
Link: https://lore.kernel.org/r/20251215204423.80242-1-okan.akyuz.linux@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Paolo Bonzini [Thu, 18 Dec 2025 17:38:45 +0000 (18:38 +0100)]
Merge tag 'kvm-x86-fixes-6.19-rc1' of https://github.com/kvm-x86/linux into HEAD
KVM fixes for 6.19-rc1
- Add a missing "break" to fix param parsing in the rseq selftest.
- Apply runtime updates to the _current_ CPUID when userspace is setting
CPUID, e.g. as part of vCPU hotplug, to fix a false positive and to avoid
dropping the pending update.
- Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot, as it's not
supported by KVM and leads to a use-after-free due to KVM failing to unbind
the memslot from the previously-associated guest_memfd instance.
- Harden against similar KVM_MEM_GUEST_MEMFD goofs, and prepare for supporting
flags-only changes on KVM_MEM_GUEST_MEMFD memlslots, e.g. for dirty logging.
- Set exit_code[63:32] to -1 (all 0xffs) when synthesizing a nested
SVM_EXIT_ERR (a.k.a. VMEXIT_INVALID) #VMEXIT, as VMEXIT_INVALID is defined
as -1ull (a 64-bit value).
- Update SVI when activating APICv to fix a bug where a post-activation EOI
for an in-service IRQ would effective be lost due to SVI being stale.
- Immediately refresh APICv controls (if necessary) on a nested VM-Exit
instead of deferring the update via KVM_REQ_APICV_UPDATE, as the request is
effectively ignored because KVM thinks the vCPU already has the correct
APICv settings.
Matthew Brost [Fri, 12 Dec 2025 18:28:42 +0000 (10:28 -0800)]
drm/xe: Use usleep_range for accurate long-running workload timeslicing
msleep is not very accurate in terms of how long it actually sleeps,
whereas usleep_range is precise. Replace the timeslice sleep for
long-running workloads with the more accurate usleep_range to avoid
jitter if the sleep period is less than 20ms.
Fixes:
dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/20251212182847.1683222-3-matthew.brost@intel.com
(cherry picked from commit
ca415c4d4c17ad676a2c8981e1fcc432221dce79)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Thomas Hellström [Wed, 17 Dec 2025 09:34:41 +0000 (10:34 +0100)]
drm/xe: Drop preempt-fences when destroying imported dma-bufs.
When imported dma-bufs are destroyed, TTM is not fully
individualizing the dma-resv, but it *is* copying the fences that
need to be waited for before declaring idle. So in the case where
the bo->resv != bo->_resv we can still drop the preempt-fences, but
make sure we do that on bo->_resv which contains the fence-pointer
copy.
In the case where the copying fails, bo->_resv will typically not
contain any fences pointers at all, so there will be nothing to
drop. In that case, TTM would have ensured all fences that would
have been copied are signaled, including any remaining preempt
fences.
Fixes:
dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Fixes:
fa0af721bd1f ("drm/ttm: test private resv obj on release/destroy")
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: <stable@vger.kernel.org> # v6.16+
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Tested-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251217093441.5073-1-thomas.hellstrom@linux.intel.com
(cherry picked from commit
425fe550fb513b567bd6d01f397d274092a9c274)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Ashutosh Dixit [Fri, 12 Dec 2025 06:18:50 +0000 (22:18 -0800)]
drm/xe/eustall: Disallow 0 EU stall property values
An EU stall property value of 0 is invalid and will cause a NPD.
Reported-by: Peter Senna Tschudin <peter.senna@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6453
Fixes:
1537ec85ebd7 ("drm/xe/uapi: Introduce API for EU stall sampling")
Cc: stable@vger.kernel.org
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Link: https://patch.msgid.link/20251212061850.1565459-4-ashutosh.dixit@intel.com
(cherry picked from commit
5bf763e908bf795da4ad538d21c1ec41f8021f76)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Ashutosh Dixit [Fri, 12 Dec 2025 06:18:49 +0000 (22:18 -0800)]
drm/xe/oa: Disallow 0 OA property values
An OA property value of 0 is invalid and will cause a NPD.
Reported-by: Peter Senna Tschudin <peter.senna@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6452
Fixes:
cc4e6994d5a2 ("drm/xe/oa: Move functions up so they can be reused for config ioctl")
Cc: stable@vger.kernel.org
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Link: https://patch.msgid.link/20251212061850.1565459-3-ashutosh.dixit@intel.com
(cherry picked from commit
7a100e6ddcc47c1f6ba7a19402de86ce24790621)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Dan Carpenter [Fri, 5 Dec 2025 11:39:19 +0000 (14:39 +0300)]
drm/xe/xe_sriov_vfio: Fix return value in xe_sriov_vfio_migration_supported()
The xe_sriov_vfio_migration_supported() function is type bool so
returning -EPERM means returning true. Return false instead.
Fixes:
bd45d46ffc8f ("drm/xe/pf: Export helpers for VFIO")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/aTLEZ4g-FD-iMQ2V@stanley.mountain
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
(cherry picked from commit
0a2404c8f6a3a120f79c57ef8a3302c8e8bc34d9)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>