linux/tools/testing/selftests/riscv/vector, branch master

selftests: riscv: vstate_exec_nolibc: Use the regular prctl() function

2026-02-09T22:27:33Z

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 Link: https://patch.msgid.link/20260117-nolibc-mysyscall-riscv-v1-1-0ae1ae3513e9@weissschuh.net Signed-off-by: Paul Walmsley

selftests: riscv: verify ptrace accepts valid vector csr values

2026-02-09T22:27:33Z

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 Tested-by: Andy Chiu Link: https://patch.msgid.link/20251214163537.1054292-10-geomatsi@gmail.com [pjw@kernel.org: cleaned up a checkpatch issue] Signed-off-by: Paul Walmsley

selftests: riscv: verify ptrace rejects invalid vector csr inputs

2026-02-09T22:27:33Z

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 Tested-by: Andy Chiu Link: https://patch.msgid.link/20251214163537.1054292-9-geomatsi@gmail.com [pjw@kernel.org: cleaned up some checkpatch issues] Signed-off-by: Paul Walmsley

selftests: riscv: verify syscalls discard vector context

2026-02-09T22:27:33Z

Add a test to v_ptrace test suite to verify that vector csr registers are clobbered on syscalls. Signed-off-by: Sergey Matyukevich Reviewed-by: Andy Chiu Tested-by: Andy Chiu Link: https://patch.msgid.link/20251214163537.1054292-8-geomatsi@gmail.com [pjw@kernel.org: cleaned up a checkpatch issue] Signed-off-by: Paul Walmsley

selftests: riscv: verify initial vector state with ptrace

2026-02-09T22:27:33Z

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 Reviewed-by: Andy Chiu Tested-by: Andy Chiu Link: https://patch.msgid.link/20251214163537.1054292-7-geomatsi@gmail.com Signed-off-by: Paul Walmsley

selftests: riscv: test ptrace vector interface

2026-02-09T22:27:33Z

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 Reviewed-by: Andy Chiu Tested-by: Andy Chiu 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

Merge tag 'mm-nonmm-stable-2025-12-06-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-12-06T22:01:20Z

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 ...

selftests: complete kselftest include centralization

2025-11-27T22:24:31Z

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 Suggested-by: Andrew Morton Link: https://lore.kernel.org/lkml/20250820143954.33d95635e504e94df01930d0@linux-foundation.org/ Reviewed-by: Wei Yang Cc: David Hildenbrand Cc: David S. Miller Cc: Eric Dumazet Cc: Günther Noack Cc: Jakub Kacinski Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mickael Salaun Cc: Ming Lei Cc: Paolo Abeni Cc: Shuah Khan Cc: Simon Horman Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

selftests: riscv: Add test for the Vector ptrace interface

2025-11-19T16:19:28Z

Add a test case that does some basic verification of the Vector ptrace interface. This forks a child process then using ptrace to inspect and manipulate the v31 register of the child. Signed-off-by: Yong-Xuan Wang Reviewed-by: Andy Chiu Tested-by: Andy Chiu Link: https://patch.msgid.link/20251013091318.467864-3-yongxuan.wang@sifive.com Signed-off-by: Paul Walmsley

selftests: riscv: fix v_exec_initval_nolibc.c

2025-04-01T07:03:04Z

Vector registers are zero initialized by the kernel. Stop accepting "all ones" as a clean value. Note that this was not working as expected given that value == 0xff can be assumed to be always false by the compiler as value's range is [-128, 127]. Both GCC (-Wtype-limits) and clang (-Wtautological-constant-out-of-range-compare) warn about this. Reviewed-by: Charlie Jenkins Tested-by: Charlie Jenkins Signed-off-by: Ignacio Encinas Link: https://lore.kernel.org/r/20250306-fix-v_exec_initval_nolibc-v2-1-97f9dc8a7faf@iencinas.com Signed-off-by: Alexandre Ghiti