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Author SHA1 Message Date
Mauro Carvalho Chehab
237abdfaa6 docs: maintainers_include: improve its output
There are three "types" of profiles:
1. Profiles already included inside subsystem-specific documentation.
   This is the most common case;
2. Profiles that are hosted externally;
3. Profiles that are at the same location as maintainer-handbooks.rst.

For (3), we need to create a TOC, as they don't exist elsewhere.

Change the logic to create TOC just for (3), prepending the
content of maintainer-handbooks with a sorted entry of all types,
before the TOC.

With such change, we can have an unique sorted list of profiles,
having the subsystem names used there listed.

Reviewed-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: <10d06a3f530e07ad981aba93617a9a7f4d63c408.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Mauro Carvalho Chehab
bda185c305 docs: maintainers_include: Only show main entry for profiles
Instead of showing as a "Contents:" with 2 identation levels,
drop its title and show profiles as a list of entries.

Reviewed-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: <387b42c523e7b9f33e61cdff6fadb1df265cf71d.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Mauro Carvalho Chehab
66a40162db docs: maintainers_include: preserve names for files under process/
When a maintainer's profile is stored outside process, they're
already included on some other book and the name of the filesystem
may not be there. That's why the logic picks the name from the
subsystem's name.

However, files directly placed together with maintainers-handbooks.rst
(e.g. under Documentation/process/) is a different history: those
aren't placed anywhere, so we can keep using their own names,
letting Sphinx do his thing.

Reviewed-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: <46961bc932be804cec19f06d202c23423d4aa12a.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Mauro Carvalho Chehab
a2560483c6 docs: maintainers_include: add external profile URLs
Some subsystem profiles are maintained elsewhere. Add them to
the output.

Reviewed-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: <b80639a38abdc934589e88bc9fc3029ad5c20bfe.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Mauro Carvalho Chehab
b01f7f29f7 docs: maintainers_include: use a better title for profiles
As we're picking the name of the subsystem from MAINTAINERS,
also use its subsystem name for the titles.

Reviewed-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: <8ce9c77c4d8c98e6bad37d838b0e359c8416040c.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Mauro Carvalho Chehab
8eae6da5f5 docs: auto-generate maintainer entry profile links
Instead of manually creating a TOC tree for them, use the new
tag to auto-generate its TOC.

Co-developed-by: Dan Williams <djbw@kernel.org>
Signed-off-by: Dan Williams <djbw@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Message-ID: <9228f77b0339b8e5dea4a201ab6d4feb30cef5c2.1776176108.git.mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <65e3f1d51eda0984ac945f50128b593f848584bc.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Mauro Carvalho Chehab
6b6d73de37 docs: maintainers_include: auto-generate maintainer profile TOC
Add a feature to allow auto-generating media entry profiles from the
corresponding field inside MAINTAINERS file(s).

Suggested-by: Dan Williams <djbw@kernel.org>
Closes: https://lore.kernel.org/linux-doc/69dd6299440be_147c801005b@djbw-dev.notmuch/
Acked-by: Dan Williams <djbw@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Message-ID: <4e9512a3d05942c98361d06d60a118d7c78762b6.1776176108.git.mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <eac5fb166bcbf0f267e762d72b150bbf248ff057.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Mauro Carvalho Chehab
45a92c0b91 docs: maintainers: add SPDX license to the file
While this file is really trivial, add a SPDX license line on it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <d27d60d72c7b2a07535d612444dc1024366ed5d0.1777295258.git.mchehab+huawei@kernel.org>
2026-05-03 09:24:30 -06:00
Linus Torvalds
811129272d slab fixes for 7.1-rc1
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Merge tag 'slab-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab fixes from Vlastimil Babka:

 - Stable fixes for CONFIG_SMP=n where _nolock() allocations in NMI both
   at kmalloc and page allocator levels are not properly protected by
   the spin_trylock() semantics on !SMP (Harry Yoo)

* tag 'slab-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm/slab: return NULL early from kmalloc_nolock() in NMI on UP
  mm/page_alloc: return NULL early from alloc_frozen_pages_nolock() in NMI on UP
2026-05-03 08:19:57 -07:00
Randy Dunlap
6f8daf6670 docs: watchdog-parameters: add missing watchdog_core parameters
Add missing watchdog_core parameters (handle_boot_enabled and
stop_on_reboot).
Add default values for handle_boot_enabled and open_timeout.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260228010402.2389343-6-rdunlap@infradead.org>
2026-05-03 09:17:55 -06:00
Randy Dunlap
bb227ba68c docs: watchdog-kernel-api: general cleanups
Fix grammar and punctuation.
Add a missing struct member (pm_nb) and its description.
Add a subheading for Helper Functions between the struct descriptions
and just pure helper functions.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260228010402.2389343-5-rdunlap@infradead.org>
2026-05-03 09:17:55 -06:00
Randy Dunlap
2a64c824d0 docs: watchdog-api: general cleaning
Correct some grammar, punctuation, and capitalization mistakes.

Drop extra words in printf() calls [likely a copy-paste error].

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260228010402.2389343-4-rdunlap@infradead.org>
2026-05-03 09:17:55 -06:00
Randy Dunlap
996b4434be docs: watchdog: pcwd: fix typo and driver info.
Correct a typo and some technical info for the pcwd driver.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260228010402.2389343-3-rdunlap@infradead.org>
2026-05-03 09:17:55 -06:00
Randy Dunlap
551a7cf215 docs: watchdog: mlx-wdt: small fixes
Correct some grammar and spelling mistakes in mlx-wdt.rst.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260228010402.2389343-2-rdunlap@infradead.org>
2026-05-03 09:17:55 -06:00
Linus Torvalds
cffcf520fd Fix lockup in requeue-PI during signal/timeout wakeups,
by Sebastian Andrzej Siewior.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking fix from Ingo Molnar:
 "Fix lockup in requeue-PI during signal/timeout wakeups, by Sebastian
  Andrzej Siewior"

* tag 'locking-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  futex: Prevent lockup in requeue-PI during signal/ timeout wakeup
2026-05-03 08:17:09 -07:00
Nicolas Pitre
2367ea8d9d cramfs: drop obsolete Future Development notes and update tools URL
fs/cramfs/README still carries a "Future Development" section written
around the Linux 2.3.39 era discussing design decisions that have long
since been settled:

  - Block size is 4096 and matches PAGE_SIZE on the reader.
  - Endianness is host-endian; mkcramfs -B / -L handles cross-builds.
  - Block-pointer extensions (CRAMFS_FLAG_EXT_BLOCK_POINTERS) ended up
    being the answer to layout flexibility rather than inode growth.

Drop the stale forward-looking section -- the factual format
description above remains accurate and is kept as-is.

While here, replace the dead sourceforge URL in the "Tools" section
with the current location of the user-space tools on github.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260422211039.270552-2-nico@fluxnic.net>
2026-05-03 09:12:23 -06:00
Nicolas Pitre
077f097219 Documentation: filesystems: cramfs: correct stale hard-link and endianness claims
Two paragraphs in cramfs.rst have been misleading for a long time:

 - "Hard links are supported, but hard linked files will still have
   a link count of 1": mkcramfs does not preserve hard links; it
   deduplicates by content (eliminate_doubles()).  Two names for
   the same on-disk inode in the source tree become two separate
   (content-shared) entries in the image, and cramfs always reports
   a link count of 1.

 - "Currently, cramfs must be written and read with architectures of
   the same endianness ... PAGE_SIZE == 4096 ... is a bug, but it
   hasn't been decided what the best fix is": the endianness
   situation has been settled for years -- the kernel checks for
   CRAMFS_MAGIC_WEND in cramfs_fill_super() and refuses the mount,
   and mkcramfs has gained -B / -L for producing images of the
   opposite endianness from the build host (useful for cross-builds,
   but the reader still needs to match).  Restate this accurately.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260422211039.270552-1-nico@fluxnic.net>
2026-05-03 09:12:23 -06:00
Gabriele Monaco
49cbd359e4 Documentation/rv: Replace stale website link
The sched monitor page was linking to Daniel's website which is now
down. The main purpose of the link was to point to a source for the
models from the original author and that can be found also in his
published paper.

Replace the link with a reference to Daniel's "A thread synchronization
model for the PREEMPT_RT Linux kernel" which can be found online and
includes the models definitions as well as the work behind them (not the
original patches but since they're based on a 5.0 kernel and are mostly
included upstream, there's little value in keeping them in the docs).

Fixes: 03abeaa63c ("Documentation/rv: Add docs for the sched monitors")
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Acked-by: Matteo Martelli <matteo.martelli@codethink.co.uk>
Tested-by: Matteo Martelli <matteo.martelli@codethink.co.uk>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260427131709.170505-2-gmonaco@redhat.com>
2026-05-03 09:10:23 -06:00
Sebastian Andrzej Siewior
75ff0feaa2 Documentation/kernel-parameters: Remove "Deprecated" from isolcpus=
The isolcpus= option has been marked as deprecated in 2017. Back then it
was desired for the domain sub option to be configured dynamically at
runtime instead using this boot command line which provides a static
configuration. In the meantime this option was extended by other sub
options which don't have runtime counterpart or it does not make sense
to provide one.

The deprecated part always referred to the default `domain' sub option
but it was not obvious. Also the reasoning behind the deprecation is
sort of dubious: There is nothing wrong with a static configuration if
there is no desired to reconfigure. This is useful on systems which
have one purpose and the CPU partition configuration is not changed for
the entire lifetime.

Remove the "Deprecated" note. Remove the part of the description which
suggest to use cpuset.sched_load_balance and instead point to the
documentation file which explains how to use cpusets to configure this
at runtime.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Waiman Long <longman@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260427150739.bwVmmkj2@linutronix.de>
2026-05-03 09:09:15 -06:00
Ilai Levin
27e6bf7df2 docs: driver-api: eisa: add SPDX license identifier
Add the missing SPDX-License-Identifier tag to the eisa.rst
documentation file.

Signed-off-by: Ilai Levin <levinilai972@gmail.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260428124555.102039-1-levinilai972@gmail.com>
2026-05-03 09:08:37 -06:00
Myro Demma
80647a6285 docs: proc: fix minor grammar and formatting issues
Fix missing "from" in "prevent <pid> being reused" and
add spacing in vm_area_struct range notation for readability.

No functional changes.

Signed-off-by: Myro Demma <myro@myromyro.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260428133001.11384-1-myro@myromyro.com>
2026-05-03 09:07:35 -06:00
Daniel Pereira
45ef180629 docs/pt_BR: process: link maintainer-kvm-x86 in maintainer-handbooks
The Portuguese translation of maintainer-kvm-x86.rst exists in the
directory, but it was not listed in the toctree of
maintainer-handbooks.rst.

Add the missing entry to ensure the document is properly indexed and
reachable through the main maintainer handbook page.

Signed-off-by: Daniel Pereira <danielmaraboo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260428180208.175472-1-danielmaraboo@gmail.com>
2026-05-03 09:05:58 -06:00
Linus Torvalds
c3cba36b39 Miscellaneous scheduler fixes:
- Fix the delayed dequeue negative lag increase fix in the
    fair scheduler (Peter Zijlstra)
 
  - Fix wakeup_preempt_fair() to do proper delayed dequeue
    (Vincent Guittot)
 
  - Clear sched_entity::rel_deadline when initializing
    forked entities, which bug can cause all tasks to be
    EEVDF-ineligible, causing a NULL pointer dereference
    crash in pick_next_entity() (Zicheng Qu)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:

 - Fix the delayed dequeue negative lag increase fix in the
   fair scheduler (Peter Zijlstra)

 - Fix wakeup_preempt_fair() to do proper delayed dequeue
   (Vincent Guittot)

 - Clear sched_entity::rel_deadline when initializing
   forked entities, which bug can cause all tasks to be
   EEVDF-ineligible, causing a NULL pointer dereference
   crash in pick_next_entity() (Zicheng Qu)

* tag 'sched-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Clear rel_deadline when initializing forked entities
  sched/fair: Fix wakeup_preempt_fair() vs delayed dequeue
  sched/fair: Fix the negative lag increase fix
2026-05-03 08:05:23 -07:00
Manuel Ebner
d957b4184a Documentation: deprecated.rst: kmalloc-family: mark argument as optional
put the optional argument (gfp) in square brackets
add default value = GFP_KERNEL

eg. ptr = kmalloc_obj(*ptr, gfp);
 -> ptr = kmalloc_obj(*ptr [, gfp] );

Signed-off-by: Manuel Ebner <manuelebner@mailbox.org>
Acked-by: SeongJae Park <sj@kernel.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260429072704.311603-2-manuelebner@mailbox.org>
2026-05-03 08:55:21 -06:00
Manuel Ebner
f61bf5fdf7 Documentation: RCU: adopt new coding style of type-aware kmalloc-family
Update Documentation/RCU/* to reflect new type-aware kmalloc-family
as suggested in commit 2932ba8d9c ("slab: Introduce kmalloc_obj()
and family")

ptr = kmalloc(sizeof(*ptr), gfp);
 -> ptr = kmalloc_obj(*ptr, gfp);

Signed-off-by: Manuel Ebner <manuelebner@mailbox.org>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: SeongJae Park <sj@kernel.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260429072320.310817-2-manuelebner@mailbox.org>
2026-05-03 08:55:13 -06:00
Manuel Ebner
7c6d969d53 Documentation: adopt new coding style of type-aware kmalloc-family
Update the documentation to reflect new type-aware kmalloc-family as
suggested in commit 2932ba8d9c ("slab: Introduce kmalloc_obj()
and family")

ptr = kmalloc(sizeof(*ptr), gfp);
 -> ptr = kmalloc_obj(*ptr, gfp);
ptr = kmalloc(sizeof(struct some_obj_name), gfp);
 -> ptr = kmalloc_obj(*ptr, gfp);
ptr = kzalloc(sizeof(*ptr), gfp);
 -> ptr = kzalloc_obj(*ptr, gfp);
ptr = kmalloc_array(count, sizeof(*ptr), gfp);
 -> ptr = kmalloc_objs(*ptr, count, gfp);
ptr = kcalloc(count, sizeof(*ptr), gfp);
 -> ptr = kzalloc_objs(*ptr, count, gfp);

Signed-off-by: Manuel Ebner <manuelebner@mailbox.org>
Acked-by: SeongJae Park <sj@kernel.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260429071445.309733-2-manuelebner@mailbox.org>
2026-05-03 08:54:21 -06:00
Miles Krause
e5ebf6278d Documentation/scheduler: Fix duplicated word in sched-deadline
The SCHED_DEADLINE documentation has a duplicated the in the CPU
affinity section.

Remove the extra word.

Signed-off-by: Miles Krause <mileskrause5200@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260429222435.2041-1-mileskrause5200@gmail.com>
2026-05-03 08:49:11 -06:00
Thomas Weißschuh
d4fe68aea3 tools/nolibc: add support for 32-bit parisc
Extend nolibc to target the 32-bit parisc architecture.
64-bit is not yet supported.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch/msgid.link/20260428-nolibc-hppa-v5-2-d843d573111a@weissschuh.net
2026-05-03 16:39:54 +02:00
Akiyoshi Kurita
61e4155c81 docs/ja_JP: translate more of submitting-patches.rst
Translate the "Separate your changes", "Style-check your changes",
and "Select the recipients for your patch" sections in
Documentation/translations/ja_JP/process/submitting-patches.rst.

Keep the wording close to the English text and wrap lines to match
the style used in the surrounding Japanese translation.

Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org>
Acked-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260502070143.1015416-1-weibu@redadmin.org>
2026-05-03 08:37:53 -06:00
Thomas Weißschuh
d4534e0873 selftests/nolibc: avoid function pointer comparisons
The upcoming parisc support would require libgcc to implement function
pointer comparisons. As we try to avoid the libgcc dependency rework
the logic to work without such comparisons.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260428-nolibc-hppa-v5-1-d843d573111a@weissschuh.net
2026-05-03 16:37:13 +02:00
Costa Shulyupin
cb7083f9db docs: Remove stale ISDN parameters
The icn= and pcbit= parameters referenced drivers removed in
commit 02bbd9802d ("staging: i4l: delete the whole thing").

Remove the stale parameter entries and the now-unused ISDN tag
from the legend.

Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Assisted-by: Claude:claude-opus-4-6
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260502120206.1289126-1-costa.shul@redhat.com>
2026-05-03 08:36:03 -06:00
Mike Rapoport (Microsoft)
b0aa5e4b08 sh: Fix fallout from ZERO_PAGE consolidation
Consolidation of empty_zero_page declarations broke boot on sh.

sh stores its initial boot parameters in a page reserved in
arch/sh/kernel/head_32.S. Before commit 6215d9f447 ("arch, mm:
consolidate empty_zero_page") this page was referenced in C code
as an array and after that commit it is referenced as a pointer.

This causes wrong code generation and boot hang.

Declare boot_params_page as an array to fix the issue.

Reported-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Fixes: 6215d9f447 ("arch, mm: consolidate empty_zero_page")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2026-05-03 16:35:40 +02:00
Thomas Weißschuh
97d6655082 tools/nolibc: add support for OpenRISC / or1k
Add support for OpenRISC / or1k to nolibc.

_start() uses the same wrapper construct as in arch-sh.h.
libgcc is necessary as OpenRISC is missing 64-bit multiplication.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Stafford Horne <shorne@gmail.com>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-openrisc-v2-1-8d7d7a2f3fec@weissschuh.net
2026-05-03 16:34:58 +02:00
Thomas Weißschuh
92f1d3340a selftests/nolibc: use vmlinux for MIPS tests
QEMU for MIPS can also load 'vmlinux'. Slim down the table by using
that from the fallback.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-7-a2ca07eab297@weissschuh.net
2026-05-03 16:32:51 +02:00
Thomas Weißschuh
bdcdb8ff5b selftests/nolibc: trim IMAGE mappings
For many configurations QEMU_ARCH is simply 'vmlinux'.
Slim down the table by automatically falling back to 'vmlinux'.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-6-a2ca07eab297@weissschuh.net
2026-05-03 16:32:46 +02:00
Thomas Weißschuh
69940c74e6 selftests/nolibc: trim DEFCONFIG mappings
For many configurations DEFCONFIG is simply 'defconfig'.
Slim down the table by automatically falling back to 'defconfig'.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-5-a2ca07eab297@weissschuh.net
2026-05-03 16:32:41 +02:00
Thomas Weißschuh
e00e6cf22b selftests/nolibc: trim QEMU_ARCH mappings
For many configurations QEMU_ARCH is the same as XARCH.
Slim down the table by automatically falling back to XARCH.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-4-a2ca07eab297@weissschuh.net
2026-05-03 16:32:36 +02:00
Thomas Weißschuh
c906341912 selftests/nolibc: use QEMU_ARCH for QEMU_ARCH_USER
The current logic forces the XARCH to QEMU_ARCH mapping to contain
entries for all architectures. This will change. To avoid duplication
of that logic, reuse the already computed QEMU_ARCH variable.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-3-a2ca07eab297@weissschuh.net
2026-05-03 16:32:31 +02:00
Thomas Weißschuh
3c1ee4a323 selftests/nolibc: drop riscv configuration
The riscv configuration is just a duplication of the riscv64 one.

Remove it. Passing ARCH=riscv will be rerouted to riscv64 anyways.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-2-a2ca07eab297@weissschuh.net
2026-05-03 16:32:26 +02:00
Thomas Weißschuh
89b0d6386a selftests/nolibc: align QEMU_ARCH_mips32be
The variable is slightly misaligned. Fix that.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://patch.msgid.link/20260429-nolibc-qemu-arch-v1-1-a2ca07eab297@weissschuh.net
2026-05-03 16:32:21 +02:00
Eliot Courtney
0a69ac25bd rust: drm: fix unsound initialization in drm::Device::new
If pinned initialization of drm::Device::Data fails, it calls
drm::Device::release via drm_dev_put. This materializes a reference to
&drm::Device, but it's not fully constructed yet, because initializing
`data` failed. It should not be dropped either. Instead, if pinned
initialization fails, make sure drm::Device::release isn't called.

Fixes: 2e9fdbe5ec ("rust: drm: device: drop_in_place() the drm::Device in release()")
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260501-fix-drm-1-v2-1-5c4f681837bc@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-03 14:04:57 +02:00
Takashi Sakamoto
fcabbf40fa firewire: core: move allocation/reallocation paths into specific branch after isoc resource management in cdev
After managing the actual isochronous resources, there is
post-processing logic to determine what type of event should be
notified. However, there is room for improvement.

This commit refactors the logic.

Link: https://lore.kernel.org/r/20260501135823.241940-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2026-05-03 20:44:21 +09:00
Takashi Sakamoto
afa66eeb18 firewire: core: refactor notification type determination after isoc resource management in cdev
After managing the actual isochronous resources, there is
post-processing logic to determine what type of event should be
notified. However, there is room for improvement.

This commit refactors the logic.

Link: https://lore.kernel.org/r/20260501135823.241940-4-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2026-05-03 20:44:21 +09:00
Takashi Sakamoto
92750bccf0 firewire: core: use switch statement for post-processing of isoc resource management in cdev
The iso_resource_auto structure object has three states. The current
implementation of state evaluation before managing the actual isochronous
resources can be improved.

This commit refactors the evaluation logic using a switch statement.

Link: https://lore.kernel.org/r/20260501135823.241940-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2026-05-03 20:44:21 +09:00
Takashi Sakamoto
834b33f9c9 firewire: core: reduce critical section duration in pre-processing of isoc resource management in cdev
It is preferable for the critical section to be as small as possible.
Current implementation of iso_resource_auto_work() function uses a
spinlock to control concurrent access to members of fw_card, fw_device,
iso_resource_auto structures, however the locking duration could be
reduced.

This commit refactors to shorten that duration.

Link: https://lore.kernel.org/r/20260501135823.241940-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2026-05-03 20:44:21 +09:00
Guangshuo Li
d9eeb0ea0d counter: Fix refcount leak in counter_alloc() error path
After device_initialize(), the lifetime of the embedded struct device
is expected to be managed through the device core reference counting.

In counter_alloc(), if dev_set_name() fails after device_initialize(),
the error path removes the chrdev, frees the ID, and frees the backing
allocation directly instead of releasing the device reference with
put_device(). This bypasses the normal device lifetime rules and may
leave the reference count of the embedded struct device unbalanced,
resulting in a refcount leak.

The issue was identified by a static analysis tool I developed and
confirmed by manual review.

Fix this by using put_device() in the dev_set_name() failure path and
let counter_device_release() handle the final cleanup.

Fixes: 4da08477ea ("counter: Set counter device name")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Link: https://lore.kernel.org/r/20260413134604.2861772-1-lgs201920130244@gmail.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
2026-05-03 13:48:39 +09:00
Jakub Kicinski
98878ed91b Merge branch 'intel-wired-lan-updates-2024-04-30-ixgbe-i40e-ice'
Jacob Keller says:

====================
Intel Wired LAN Updates 2024-04-30 (ixgbe, i40e, ice)

This series includes updates to support Energy-Efficient Ethernet (EEE) on
E610 devices in the ixgbe driver, support for an unmanaged DPLL output on
E830, as well as some other minor cleanups and improvements across ixgbe,
i40e, and ice.

Jedrzej begins with the first six patches preparing the ixgbe driver to
support EEE, adding a EEE capability flag, updating the supported EEE
speeds, updating the ACI command structures with the fields related to
EEE, moving the EEE config validation out for re-use, and finally
implementing the EEE support for E610 hardware.

Aleksandr fixes the ixgbe_update_flash_X550() logic to prevent unaligned
access in ixgbe_host_interface_command(). Note: this has no functional
change on x86, and is being sent through net-next as it is considered a
minor cleanup.

Jacob (hi!) modifies the i40e driver to only timestamp PTP event packets,
instead of timestamping every V2 event frame. This avoids wasting the
limited number of timestamp slots for frames which the PTP protocol does
not care about.

Jacob also extends the devlink flash notification message reporting that
users can activate the new firmware via devlink reload to explicitly
indicate the required "fw_activate" action.

Byungchul Park  fixes the ice_lbtest_receive_frames() function to use
netmem_desc instead of the page structure.

Przemyslaw Korba fixes a truncation warning in ice_dpll_init_fwnode_pins()
by increasing the allowed length of the pin_name string on the stack to 16.

Ivan Vecera adds some bounds checking to ice_dpll_rclk_state_on_pin_get/set()
and moves the CGU register macros to be under the header guard ifdef in
ice_dpll.h
====================

Link: https://patch.msgid.link/20260430-jk-iwl-net-next-2026-04-30-v1-0-6f27ae1cd073@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-02 19:12:47 -07:00
Przemyslaw Korba
586483cb41 ice: dpll: Fix compilation warning
Introduced by commit ad1df4f2d5 ("ice: dpll: Support E825-C SyncE and
dynamic pin discovery"):

ice_dpll.c: In function ‘ice_dpll_init’:
ice_dpll.c:3588:59: error: ‘%u’ directive output may be truncated
writing between 1 and 10 bytes into a region of size 4
[-Werror=format-truncation=] snprintf(pin_name, sizeof(pin_name),
"rclk%u", i);

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Przemyslaw Korba <przemyslaw.korba@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260430-jk-iwl-net-next-2026-04-30-v1-13-6f27ae1cd073@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-02 19:12:47 -07:00
Byungchul Park
b9fa4b9e05 ice: access @pp through netmem_desc instead of page
To eliminate the use of struct page in page pool, the page pool users
should use netmem descriptor and APIs instead.

Make ice driver access @pp through netmem_desc instead of page.

Signed-off-by: Byungchul Park <byungchul@sk.com>
Tested-by: Alexander Nowlin <alexander.nowlin@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com>
Reviewed-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260430-jk-iwl-net-next-2026-04-30-v1-12-6f27ae1cd073@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-02 19:12:46 -07:00
Jacob Keller
3f923a48da ice: mention fw_activate action along with devlink reload
The ice driver reports a helpful status message when updating firmware
indicating what action is necessary to enable the new firmware. This is
done because some updates require power cycling or rebooting the machine
but some can be activated via devlink.

The ice driver only supports activating firmware with the specific action
of "fw_activate" a bare "devlink dev reload" will *not* update the
firmware, and will only perform driver reinitialization.

Update the status message to explicitly reflect that the reload must use
the fw_activate action.

I considered modifying the text to spell out the full command, but felt
that was both overkill and something that would belong better as part of
the user space program and not hard coded into the kernel driver output.

Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20260430-jk-iwl-net-next-2026-04-30-v1-11-6f27ae1cd073@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-02 19:12:46 -07:00