<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-toradex.git/tools/testing/selftests/riscv/vector, branch master</title>
<subtitle>Linux kernel for Apalis and Colibri modules</subtitle>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/'/>
<entry>
<title>selftests: riscv: Add braces around EXPECT_EQ()</title>
<updated>2026-04-05T00:37:57+00:00</updated>
<author>
<name>Charlie Jenkins</name>
<email>thecharlesjenkins@gmail.com</email>
</author>
<published>2026-03-10T01:52:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=511361fe7a8856e2f415010942808c237a1b8061'/>
<id>511361fe7a8856e2f415010942808c237a1b8061</id>
<content type='text'>
EXPECT_EQ() expands to multiple lines, breaking up one-line if
statements. This issue was not present in the patch on the mailing list
but was instead introduced by the maintainer when attempting to fix up
checkpatch warnings. Add braces around EXPECT_EQ() to avoid the error
even though checkpatch suggests them to be removed:

validate_v_ptrace.c:626:17: error: ‘else’ without a previous ‘if’

Fixes: 3789d5eecd5a ("selftests: riscv: verify syscalls discard vector context")
Fixes: 30eb191c895b ("selftests: riscv: verify ptrace rejects invalid vector csr inputs")
Fixes: 849f05ae1ea6 ("selftests: riscv: verify ptrace accepts valid vector csr values")
Signed-off-by: Charlie Jenkins &lt;thecharlesjenkins@gmail.com&gt;
Reviewed-and-tested-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Link: https://patch.msgid.link/20260309-fix_selftests-v2-2-9d5a553a531e@gmail.com
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
EXPECT_EQ() expands to multiple lines, breaking up one-line if
statements. This issue was not present in the patch on the mailing list
but was instead introduced by the maintainer when attempting to fix up
checkpatch warnings. Add braces around EXPECT_EQ() to avoid the error
even though checkpatch suggests them to be removed:

validate_v_ptrace.c:626:17: error: ‘else’ without a previous ‘if’

Fixes: 3789d5eecd5a ("selftests: riscv: verify syscalls discard vector context")
Fixes: 30eb191c895b ("selftests: riscv: verify ptrace rejects invalid vector csr inputs")
Fixes: 849f05ae1ea6 ("selftests: riscv: verify ptrace accepts valid vector csr values")
Signed-off-by: Charlie Jenkins &lt;thecharlesjenkins@gmail.com&gt;
Reviewed-and-tested-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Link: https://patch.msgid.link/20260309-fix_selftests-v2-2-9d5a553a531e@gmail.com
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;</pre>
</div>
</content>
</entry>
<entry>
<title>riscv: use _BITUL macro rather than BIT() in ptrace uapi and kselftests</title>
<updated>2026-04-05T00:37:54+00:00</updated>
<author>
<name>Paul Walmsley</name>
<email>pjw@kernel.org</email>
</author>
<published>2026-04-02T23:18:03+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=87ad7cc9aa7f0a202189640c5015aa985e7e8f3b'/>
<id>87ad7cc9aa7f0a202189640c5015aa985e7e8f3b</id>
<content type='text'>
Fix the build of non-kernel code that includes the RISC-V ptrace uapi
header, and the RISC-V validate_v_ptrace.c kselftest, by using the
_BITUL() macro rather than BIT().  BIT() is not available outside
the kernel.

Based on patches and comments from Charlie Jenkins, Michael Neuling,
and Andreas Schwab.

Fixes: 30eb191c895b ("selftests: riscv: verify ptrace rejects invalid vector csr inputs")
Fixes: 2af7c9cf021c ("riscv/ptrace: expose riscv CFI status and state via ptrace and in core files")
Cc: Andreas Schwab &lt;schwab@suse.de&gt;
Cc: Michael Neuling &lt;mikey@neuling.org&gt;
Cc: Charlie Jenkins &lt;thecharlesjenkins@gmail.com&gt;
Link: https://patch.msgid.link/20260330024248.449292-1-mikey@neuling.org
Link: https://lore.kernel.org/linux-riscv/20260309-fix_selftests-v2-1-9d5a553a531e@gmail.com/
Link: https://lore.kernel.org/linux-riscv/20260309-fix_selftests-v2-3-9d5a553a531e@gmail.com/
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fix the build of non-kernel code that includes the RISC-V ptrace uapi
header, and the RISC-V validate_v_ptrace.c kselftest, by using the
_BITUL() macro rather than BIT().  BIT() is not available outside
the kernel.

Based on patches and comments from Charlie Jenkins, Michael Neuling,
and Andreas Schwab.

Fixes: 30eb191c895b ("selftests: riscv: verify ptrace rejects invalid vector csr inputs")
Fixes: 2af7c9cf021c ("riscv/ptrace: expose riscv CFI status and state via ptrace and in core files")
Cc: Andreas Schwab &lt;schwab@suse.de&gt;
Cc: Michael Neuling &lt;mikey@neuling.org&gt;
Cc: Charlie Jenkins &lt;thecharlesjenkins@gmail.com&gt;
Link: https://patch.msgid.link/20260330024248.449292-1-mikey@neuling.org
Link: https://lore.kernel.org/linux-riscv/20260309-fix_selftests-v2-1-9d5a553a531e@gmail.com/
Link: https://lore.kernel.org/linux-riscv/20260309-fix_selftests-v2-3-9d5a553a531e@gmail.com/
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;</pre>
</div>
</content>
</entry>
<entry>
<title>selftests: riscv: vstate_exec_nolibc: Use the regular prctl() function</title>
<updated>2026-02-09T22:27:33+00:00</updated>
<author>
<name>Thomas Weißschuh</name>
<email>linux@weissschuh.net</email>
</author>
<published>2026-01-26T04:09:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=098921ec6818291d98bd3a4002c9dfbe2e75aac2'/>
<id>098921ec6818291d98bd3a4002c9dfbe2e75aac2</id>
<content type='text'>
The my_syscall*() macros are internal implementation details of nolibc.

Now that nolibc has a normal prctl() function, use that.

Signed-off-by: Thomas Weißschuh &lt;linux@weissschuh.net&gt;
Link: https://patch.msgid.link/20260117-nolibc-mysyscall-riscv-v1-1-0ae1ae3513e9@weissschuh.net
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The my_syscall*() macros are internal implementation details of nolibc.

Now that nolibc has a normal prctl() function, use that.

Signed-off-by: Thomas Weißschuh &lt;linux@weissschuh.net&gt;
Link: https://patch.msgid.link/20260117-nolibc-mysyscall-riscv-v1-1-0ae1ae3513e9@weissschuh.net
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>selftests: riscv: verify ptrace accepts valid vector csr values</title>
<updated>2026-02-09T22:27:33+00:00</updated>
<author>
<name>Sergey Matyukevich</name>
<email>geomatsi@gmail.com</email>
</author>
<published>2026-01-26T04:09:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=849f05ae1ea6e1ff621243dce27fe455fdc9d0ff'/>
<id>849f05ae1ea6e1ff621243dce27fe455fdc9d0ff</id>
<content type='text'>
Add a test to v_ptrace test suite to verify that ptrace accepts the
valid input combinations of vector csr registers. Use kselftest
fixture variants to create multiple inputs for the test.

The test simulates a debug scenario with three breakpoints:
0. init: let the tracee set up its initial vector configuration
1. 1st bp:  modify the tracee's vector csr registers from the debugger
  - resume the tracee to execute a block without vector instructions
2. 2nd bp: read back the tracees's vector csr registers from the debugger
  - compare with values set by the debugger
  - resume the tracee to execute a block with vector instructions
3. 3rd bp: read back the tracess's vector csr registers again
  - compare with values set by the debugger

The last check helps to confirm that ptrace validation check for vector
csr registers input values works properly and maintains an accurate view
of the tracee's vector context in debugger.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-10-geomatsi@gmail.com
[pjw@kernel.org: cleaned up a checkpatch issue]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add a test to v_ptrace test suite to verify that ptrace accepts the
valid input combinations of vector csr registers. Use kselftest
fixture variants to create multiple inputs for the test.

The test simulates a debug scenario with three breakpoints:
0. init: let the tracee set up its initial vector configuration
1. 1st bp:  modify the tracee's vector csr registers from the debugger
  - resume the tracee to execute a block without vector instructions
2. 2nd bp: read back the tracees's vector csr registers from the debugger
  - compare with values set by the debugger
  - resume the tracee to execute a block with vector instructions
3. 3rd bp: read back the tracess's vector csr registers again
  - compare with values set by the debugger

The last check helps to confirm that ptrace validation check for vector
csr registers input values works properly and maintains an accurate view
of the tracee's vector context in debugger.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-10-geomatsi@gmail.com
[pjw@kernel.org: cleaned up a checkpatch issue]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>selftests: riscv: verify ptrace rejects invalid vector csr inputs</title>
<updated>2026-02-09T22:27:33+00:00</updated>
<author>
<name>Sergey Matyukevich</name>
<email>geomatsi@gmail.com</email>
</author>
<published>2026-01-26T04:09:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=30eb191c895b086c21fc04c5c1482cb1bb0f3caf'/>
<id>30eb191c895b086c21fc04c5c1482cb1bb0f3caf</id>
<content type='text'>
Add a test to v_ptrace test suite to verify that ptrace rejects the
invalid input combinations of vector csr registers. Use kselftest
fixture variants to create multiple invalid inputs for the test.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-9-geomatsi@gmail.com
[pjw@kernel.org: cleaned up some checkpatch issues]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add a test to v_ptrace test suite to verify that ptrace rejects the
invalid input combinations of vector csr registers. Use kselftest
fixture variants to create multiple invalid inputs for the test.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-9-geomatsi@gmail.com
[pjw@kernel.org: cleaned up some checkpatch issues]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>selftests: riscv: verify syscalls discard vector context</title>
<updated>2026-02-09T22:27:33+00:00</updated>
<author>
<name>Sergey Matyukevich</name>
<email>geomatsi@gmail.com</email>
</author>
<published>2026-01-26T04:09:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=3789d5eecd5ae01149d0ef5ba70e8120da2f55db'/>
<id>3789d5eecd5ae01149d0ef5ba70e8120da2f55db</id>
<content type='text'>
Add a test to v_ptrace test suite to verify that vector csr registers
are clobbered on syscalls.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Reviewed-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-8-geomatsi@gmail.com
[pjw@kernel.org: cleaned up a checkpatch issue]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add a test to v_ptrace test suite to verify that vector csr registers
are clobbered on syscalls.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Reviewed-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-8-geomatsi@gmail.com
[pjw@kernel.org: cleaned up a checkpatch issue]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>selftests: riscv: verify initial vector state with ptrace</title>
<updated>2026-02-09T22:27:33+00:00</updated>
<author>
<name>Sergey Matyukevich</name>
<email>geomatsi@gmail.com</email>
</author>
<published>2026-01-26T04:09:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=66d03044891df63c82b18ae1da07bc4bc077ae48'/>
<id>66d03044891df63c82b18ae1da07bc4bc077ae48</id>
<content type='text'>
Add a test case that attaches to a traced process immediately after its
first executed vector instructions to verify the initial vector context.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Reviewed-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-7-geomatsi@gmail.com
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add a test case that attaches to a traced process immediately after its
first executed vector instructions to verify the initial vector context.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Reviewed-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-7-geomatsi@gmail.com
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>selftests: riscv: test ptrace vector interface</title>
<updated>2026-02-09T22:27:33+00:00</updated>
<author>
<name>Sergey Matyukevich</name>
<email>geomatsi@gmail.com</email>
</author>
<published>2026-01-26T04:09:57+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=600f72ded8c877be95322ce806d23345ea5e89bc'/>
<id>600f72ded8c877be95322ce806d23345ea5e89bc</id>
<content type='text'>
Add a test case to check ptrace behavior in the case when vector
extension is supported by the system, but vector context is not
yet enabled for the traced process.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Reviewed-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-6-geomatsi@gmail.com
[pjw@kernel.org: dropped duplicate sys/wait.h include]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add a test case to check ptrace behavior in the case when vector
extension is supported by the system, but vector context is not
yet enabled for the traced process.

Signed-off-by: Sergey Matyukevich &lt;geomatsi@gmail.com&gt;
Reviewed-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Tested-by: Andy Chiu &lt;andybnac@gmail.com&gt;
Link: https://patch.msgid.link/20251214163537.1054292-6-geomatsi@gmail.com
[pjw@kernel.org: dropped duplicate sys/wait.h include]
Signed-off-by: Paul Walmsley &lt;pjw@kernel.org&gt;</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm</title>
<updated>2025-12-06T22:01:20+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2025-12-06T22:01:20+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=509d3f45847627f4c5cdce004c3ec79262b5239c'/>
<id>509d3f45847627f4c5cdce004c3ec79262b5239c</id>
<content type='text'>
Pull non-MM updates from Andrew Morton:

 - "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
   fixes a build issue and does some cleanup in ib/sys_info.c

 - "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
   enhances the 64-bit math code on behalf of a PWM driver and beefs up
   the test module for these library functions

 - "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
   makes BPF symbol names, sizes, and line numbers available to the GDB
   debugger

 - "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
   adds a sysctl which can be used to cause additional info dumping when
   the hung-task and lockup detectors fire

 - "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
   adds a general base64 encoder/decoder to lib/ and migrates several
   users away from their private implementations

 - "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
   makes TCP a little faster

 - "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
   reworks the KEXEC Handover interfaces in preparation for Live Update
   Orchestrator (LUO), and possibly for other future clients

 - "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
   increases the flexibility of KEXEC Handover. Also preparation for LUO

 - "Live Update Orchestrator" (Pasha Tatashin)
   is a major new feature targeted at cloud environments. Quoting the
   cover letter:

      This series introduces the Live Update Orchestrator, a kernel
      subsystem designed to facilitate live kernel updates using a
      kexec-based reboot. This capability is critical for cloud
      environments, allowing hypervisors to be updated with minimal
      downtime for running virtual machines. LUO achieves this by
      preserving the state of selected resources, such as memory,
      devices and their dependencies, across the kernel transition.

      As a key feature, this series includes support for preserving
      memfd file descriptors, which allows critical in-memory data, such
      as guest RAM or any other large memory region, to be maintained in
      RAM across the kexec reboot.

   Mike Rappaport merits a mention here, for his extensive review and
   testing work.

 - "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
   moves the kexec and kdump sysfs entries from /sys/kernel/ to
   /sys/kernel/kexec/ and adds back-compatibility symlinks which can
   hopefully be removed one day

 - "kho: fixes for vmalloc restoration" (Mike Rapoport)
   fixes a BUG which was being hit during KHO restoration of vmalloc()
   regions

* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
  calibrate: update header inclusion
  Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
  vmcoreinfo: track and log recoverable hardware errors
  kho: fix restoring of contiguous ranges of order-0 pages
  kho: kho_restore_vmalloc: fix initialization of pages array
  MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
  init: replace simple_strtoul with kstrtoul to improve lpj_setup
  KHO: fix boot failure due to kmemleak access to non-PRESENT pages
  Documentation/ABI: new kexec and kdump sysfs interface
  Documentation/ABI: mark old kexec sysfs deprecated
  kexec: move sysfs entries to /sys/kernel/kexec
  test_kho: always print restore status
  kho: free chunks using free_page() instead of kfree()
  selftests/liveupdate: add kexec test for multiple and empty sessions
  selftests/liveupdate: add simple kexec-based selftest for LUO
  selftests/liveupdate: add userspace API selftests
  docs: add documentation for memfd preservation via LUO
  mm: memfd_luo: allow preserving memfd
  liveupdate: luo_file: add private argument to store runtime state
  mm: shmem: export some functions to internal.h
  ...
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull non-MM updates from Andrew Morton:

 - "panic: sys_info: Refactor and fix a potential issue" (Andy Shevchenko)
   fixes a build issue and does some cleanup in ib/sys_info.c

 - "Implement mul_u64_u64_div_u64_roundup()" (David Laight)
   enhances the 64-bit math code on behalf of a PWM driver and beefs up
   the test module for these library functions

 - "scripts/gdb/symbols: make BPF debug info available to GDB" (Ilya Leoshkevich)
   makes BPF symbol names, sizes, and line numbers available to the GDB
   debugger

 - "Enable hung_task and lockup cases to dump system info on demand" (Feng Tang)
   adds a sysctl which can be used to cause additional info dumping when
   the hung-task and lockup detectors fire

 - "lib/base64: add generic encoder/decoder, migrate users" (Kuan-Wei Chiu)
   adds a general base64 encoder/decoder to lib/ and migrates several
   users away from their private implementations

 - "rbree: inline rb_first() and rb_last()" (Eric Dumazet)
   makes TCP a little faster

 - "liveupdate: Rework KHO for in-kernel users" (Pasha Tatashin)
   reworks the KEXEC Handover interfaces in preparation for Live Update
   Orchestrator (LUO), and possibly for other future clients

 - "kho: simplify state machine and enable dynamic updates" (Pasha Tatashin)
   increases the flexibility of KEXEC Handover. Also preparation for LUO

 - "Live Update Orchestrator" (Pasha Tatashin)
   is a major new feature targeted at cloud environments. Quoting the
   cover letter:

      This series introduces the Live Update Orchestrator, a kernel
      subsystem designed to facilitate live kernel updates using a
      kexec-based reboot. This capability is critical for cloud
      environments, allowing hypervisors to be updated with minimal
      downtime for running virtual machines. LUO achieves this by
      preserving the state of selected resources, such as memory,
      devices and their dependencies, across the kernel transition.

      As a key feature, this series includes support for preserving
      memfd file descriptors, which allows critical in-memory data, such
      as guest RAM or any other large memory region, to be maintained in
      RAM across the kexec reboot.

   Mike Rappaport merits a mention here, for his extensive review and
   testing work.

 - "kexec: reorganize kexec and kdump sysfs" (Sourabh Jain)
   moves the kexec and kdump sysfs entries from /sys/kernel/ to
   /sys/kernel/kexec/ and adds back-compatibility symlinks which can
   hopefully be removed one day

 - "kho: fixes for vmalloc restoration" (Mike Rapoport)
   fixes a BUG which was being hit during KHO restoration of vmalloc()
   regions

* tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (139 commits)
  calibrate: update header inclusion
  Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"
  vmcoreinfo: track and log recoverable hardware errors
  kho: fix restoring of contiguous ranges of order-0 pages
  kho: kho_restore_vmalloc: fix initialization of pages array
  MAINTAINERS: TPM DEVICE DRIVER: update the W-tag
  init: replace simple_strtoul with kstrtoul to improve lpj_setup
  KHO: fix boot failure due to kmemleak access to non-PRESENT pages
  Documentation/ABI: new kexec and kdump sysfs interface
  Documentation/ABI: mark old kexec sysfs deprecated
  kexec: move sysfs entries to /sys/kernel/kexec
  test_kho: always print restore status
  kho: free chunks using free_page() instead of kfree()
  selftests/liveupdate: add kexec test for multiple and empty sessions
  selftests/liveupdate: add simple kexec-based selftest for LUO
  selftests/liveupdate: add userspace API selftests
  docs: add documentation for memfd preservation via LUO
  mm: memfd_luo: allow preserving memfd
  liveupdate: luo_file: add private argument to store runtime state
  mm: shmem: export some functions to internal.h
  ...
</pre>
</div>
</content>
</entry>
<entry>
<title>selftests: complete kselftest include centralization</title>
<updated>2025-11-27T22:24:31+00:00</updated>
<author>
<name>Bala-Vignesh-Reddy</name>
<email>reddybalavignesh9979@gmail.com</email>
</author>
<published>2025-10-16T10:44:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.toradex.cn/cgit/linux-toradex.git/commit/?id=e6fbd1759c9ece5044d3470f30a5e2166dc9de89'/>
<id>e6fbd1759c9ece5044d3470f30a5e2166dc9de89</id>
<content type='text'>
This follow-up patch completes centralization of kselftest.h and
ksefltest_harness.h includes in remaining seltests files, replacing all
relative paths with a non-relative paths using shared -I include path in
lib.mk

Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on
riscv, arm64, x86_64 and powerpc arch.

[reddybalavignesh9979@gmail.com: add selftests include path for kselftest.h]
  Link: https://lkml.kernel.org/r/20251017090201.317521-1-reddybalavignesh9979@gmail.com
Link: https://lkml.kernel.org/r/20251016104409.68985-1-reddybalavignesh9979@gmail.com
Signed-off-by: Bala-Vignesh-Reddy &lt;reddybalavignesh9979@gmail.com&gt;
Suggested-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/
Reviewed-by: Wei Yang &lt;richard.weiyang@gmail.com&gt;
Cc: David Hildenbrand &lt;david@redhat.com&gt;
Cc: David S. Miller &lt;davem@davemloft.net&gt;
Cc: Eric Dumazet &lt;edumazet@google.com&gt;
Cc: Günther Noack &lt;gnoack@google.com&gt;
Cc: Jakub Kacinski &lt;kuba@kernel.org&gt;
Cc: Liam Howlett &lt;liam.howlett@oracle.com&gt;
Cc: Lorenzo Stoakes &lt;lorenzo.stoakes@oracle.com&gt;
Cc: Michal Hocko &lt;mhocko@suse.com&gt;
Cc: Mickael Salaun &lt;mic@digikod.net&gt;
Cc: Ming Lei &lt;ming.lei@redhat.com&gt;
Cc: Paolo Abeni &lt;pabeni@redhat.com&gt;
Cc: Shuah Khan &lt;shuah@kernel.org&gt;
Cc: Simon Horman &lt;horms@kernel.org&gt;
Cc: Suren Baghdasaryan &lt;surenb@google.com&gt;
Cc: Vlastimil Babka &lt;vbabka@suse.cz&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This follow-up patch completes centralization of kselftest.h and
ksefltest_harness.h includes in remaining seltests files, replacing all
relative paths with a non-relative paths using shared -I include path in
lib.mk

Tested with gcc-13.3 and clang-18.1, and cross-compiled successfully on
riscv, arm64, x86_64 and powerpc arch.

[reddybalavignesh9979@gmail.com: add selftests include path for kselftest.h]
  Link: https://lkml.kernel.org/r/20251017090201.317521-1-reddybalavignesh9979@gmail.com
Link: https://lkml.kernel.org/r/20251016104409.68985-1-reddybalavignesh9979@gmail.com
Signed-off-by: Bala-Vignesh-Reddy &lt;reddybalavignesh9979@gmail.com&gt;
Suggested-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/
Reviewed-by: Wei Yang &lt;richard.weiyang@gmail.com&gt;
Cc: David Hildenbrand &lt;david@redhat.com&gt;
Cc: David S. Miller &lt;davem@davemloft.net&gt;
Cc: Eric Dumazet &lt;edumazet@google.com&gt;
Cc: Günther Noack &lt;gnoack@google.com&gt;
Cc: Jakub Kacinski &lt;kuba@kernel.org&gt;
Cc: Liam Howlett &lt;liam.howlett@oracle.com&gt;
Cc: Lorenzo Stoakes &lt;lorenzo.stoakes@oracle.com&gt;
Cc: Michal Hocko &lt;mhocko@suse.com&gt;
Cc: Mickael Salaun &lt;mic@digikod.net&gt;
Cc: Ming Lei &lt;ming.lei@redhat.com&gt;
Cc: Paolo Abeni &lt;pabeni@redhat.com&gt;
Cc: Shuah Khan &lt;shuah@kernel.org&gt;
Cc: Simon Horman &lt;horms@kernel.org&gt;
Cc: Suren Baghdasaryan &lt;surenb@google.com&gt;
Cc: Vlastimil Babka &lt;vbabka@suse.cz&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
