kernel/arch/riscv/include/uapi/asm/hwprobe.h, branch linux-rolling-stable

riscv: hwprobe: export Zilsd and Zclsd ISA extensions

2025-12-19T07:22:30Z

Export Zilsd and Zclsd ISA extensions through hwprobe. Signed-off-by: Pincheng Wang Reviewed-by: Nutty Liu Link: https://patch.msgid.link/20250826162939.1494021-4-pincheng.plct@isrc.iscas.ac.cn [pjw@kernel.org: fixed whitespace; updated to apply] Signed-off-by: Paul Walmsley

riscv: hwprobe: Expose Zicbop extension and its block size

2025-11-19T16:19:29Z

- Add `RISCV_HWPROBE_EXT_ZICBOP` to report the presence of the Zicbop extension. - Add `RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE` to expose the block size (in bytes) when Zicbop is supported. - Update hwprobe.rst to document the new extension bit and block size key, following the existing Zicbom/Zicboz style. Reviewed-by: Andrew Jones Signed-off-by: Yao Zihong Link: https://patch.msgid.link/20251118162436.15485-2-zihong.plct@isrc.iscas.ac.cn [pjw@kernel.org: updated to apply] Signed-off-by: Paul Walmsley

riscv: hwprobe: Export Zalasr extension

2025-11-19T16:19:28Z

Export the Zalasr extension to userspace using hwprobe. Signed-off-by: Xu Lu Link: https://patch.msgid.link/20251020042056.30283-4-luxu.kernel@bytedance.com Signed-off-by: Paul Walmsley

riscv: hwprobe: Add MIPS vendor extension probing

2025-09-19T16:33:56Z

Add a new hwprobe key "RISCV_HWPROBE_KEY_VENDOR_EXT_MIPS_0" which allows userspace to probe for the new xmipsexectl vendor extension. Signed-off-by: Aleksa Paunovic Reviewed-by: Alexandre Ghiti Link: https://lore.kernel.org/r/20250724-p8700-pause-v5-4-a6cbbe1c3412@htecgroup.com [pjw@kernel.org: fixed some checkpatch issues] Signed-off-by: Paul Walmsley

Merge tag 'riscv-mw1-6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/alexghiti/linux into for-next

2025-06-05T19:26:06Z

riscv patches for 6.16-rc1 * Implement atomic patching support for ftrace which finally allows to get rid of stop_machine(). * Support for kexec_file_load() syscall * Improve module loading time by changing the algorithm that counts the number of plt/got entries in a module. * Zicbop is now used in the kernel to prefetch instructions [Palmer: There's been two rounds of surgery on this one, so as a result it's a bit different than the PR.] * alex-pr: (734 commits) riscv: Improve Kconfig help for RISCV_ISA_V_PREEMPTIVE MAINTAINERS: Update Atish's email address riscv: hwprobe: export Zabha extension riscv: Make regs_irqs_disabled() more clear perf symbols: Ignore mapping symbols on riscv RISC-V: Kconfig: Fix help text of CMDLINE_EXTEND riscv: module: Optimize PLT/GOT entry counting riscv: Add support for PUD THP riscv: xchg: Prefetch the destination word for sc.w riscv: Add ARCH_HAS_PREFETCH[W] support with Zicbop riscv: Add support for Zicbop riscv: Introduce Zicbop instructions riscv/kexec_file: Fix comment in purgatory relocator riscv: kexec_file: Support loading Image binary file riscv: kexec_file: Split the loading of kernel and others riscv: Documentation: add a description about dynamic ftrace riscv: ftrace: support direct call using call_ops riscv: Implement HAVE_DYNAMIC_FTRACE_WITH_CALL_OPS riscv: ftrace: support PREEMPT riscv: add a data fence for CMODX in the kernel mode ... Signed-off-by: Palmer Dabbelt

riscv: hwprobe: export Zabha extension

2025-06-05T18:10:18Z

Export Zabha through the hwprobe syscall. Reviewed-by: Clément Léger Link: https://lore.kernel.org/r/20250421141413.394444-1-alexghiti@rivosinc.com Signed-off-by: Alexandre Ghiti Signed-off-by: Palmer Dabbelt

riscv: hwprobe: Document SiFive xsfvqmaccdod and xsfvqmaccqoq vendor extensions

2025-05-08T18:01:43Z

Document the support for sifive vendor extensions using the key RISCV_HWPROBE_KEY_VENDOR_EXT_SIFIVE_0 and two vendor extensions for SiFive Int8 Matrix Multiplication Instructions using RISCV_HWPROBE_VENDOR_EXT_XSFVQMACCDOD and RISCV_HWPROBE_VENDOR_EXT_XSFVQMACCQOQ. Signed-off-by: Cyan Yang Link: https://lore.kernel.org/r/20250418053239.4351-4-cyan.yang@sifive.com Signed-off-by: Palmer Dabbelt

riscv: hwprobe: export Zaamo and Zalrsc extensions

2025-03-19T12:03:45Z

Export the Zaamo and Zalrsc extensions to userspace using hwprobe. Signed-off-by: Clément Léger Reviewed-by: Charlie Jenkins Link: https://lore.kernel.org/r/20240619153913.867263-4-cleger@rivosinc.com Signed-off-by: Alexandre Ghiti

RISC-V: hwprobe: Expose Zicbom extension and its block size

2025-03-18T12:43:56Z

Expose Zicbom through hwprobe and also provide a key to extract its respective block size. [ alex: Fix merge conflicts and hwprobe numbering ] Reviewed-by: Andrew Jones Reviewed-by: Samuel Holland Signed-off-by: Yunhui Cui Link: https://lore.kernel.org/r/20250226063206.71216-3-cuiyunhui@bytedance.com Signed-off-by: Alexandre Ghiti

Merge patch series "riscv: Add bfloat16 instruction support"

2025-03-18T11:52:54Z

Inochi Amaoto says: Add description for the BFloat16 precision Floating-Point ISA extension, (Zfbfmin, Zvfbfmin, Zvfbfwma). which was ratified in commit 4dc23d62 ("Added Chapter title to BF16") of the riscv-isa-manual. * patches from https://lore.kernel.org/r/20250213003849.147358-1-inochiama@gmail.com: riscv: hwprobe: export bfloat16 ISA extension riscv: add ISA extension parsing for bfloat16 ISA extension dt-bindings: riscv: add bfloat16 ISA extension description Signed-off-by: Alexandre Ghiti Link: https://lore.kernel.org/r/20250213003849.147358-1-inochiama@gmail.com