Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
riscv: hwprobe: export Zilsd and Zclsd ISA extensions
Export Zilsd and Zclsd ISA extensions through hwprobe.
Signed-off-by: Pincheng Wang <pincheng.plct@isrc.iscas.ac.cn>
Reviewed-by: Nutty Liu <nutty.liu@hotmail.com>
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 <pjw@kernel.org>
authored by
Pincheng Wang
and committed by
Paul Walmsley
6118ebed
3f0cbfb8
+13
+8
Documentation/arch/riscv/hwprobe.rst
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Documentation/arch/riscv/hwprobe.rst
···
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* :c:macro:`RISCV_HWPROBE_EXT_ZICBOP`: The Zicbop extension is supported, as
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ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.
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* :c:macro:`RISCV_HWPROBE_EXT_ZILSD`: The Zilsd extension is supported as
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defined in the RISC-V ISA manual starting from commit f88abf1 ("Integrating
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load/store pair for RV32 with the main manual") of the riscv-isa-manual.
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* :c:macro:`RISCV_HWPROBE_EXT_ZCLSD`: The Zclsd extension is supported as
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defined in the RISC-V ISA manual starting from commit f88abf1 ("Integrating
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load/store pair for RV32 with the main manual") of the riscv-isa-manual.
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+
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* :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: Deprecated. Returns similar values to
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:c:macro:`RISCV_HWPROBE_KEY_MISALIGNED_SCALAR_PERF`, but the key was
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mistakenly classified as a bitmask rather than a value.
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arch/riscv/include/uapi/asm/hwprobe.h
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arch/riscv/include/uapi/asm/hwprobe.h
···
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#define RISCV_HWPROBE_EXT_ZABHA (1ULL << 58)
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#define RISCV_HWPROBE_EXT_ZALASR (1ULL << 59)
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#define RISCV_HWPROBE_EXT_ZICBOP (1ULL << 60)
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#define RISCV_HWPROBE_EXT_ZILSD (1ULL << 61)
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#define RISCV_HWPROBE_EXT_ZCLSD (1ULL << 62)
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#define RISCV_HWPROBE_KEY_CPUPERF_0 5
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#define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
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#define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
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arch/riscv/kernel/sys_hwprobe.c
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arch/riscv/kernel/sys_hwprobe.c
···
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EXT_KEY(ZBS);
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EXT_KEY(ZCA);
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EXT_KEY(ZCB);
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EXT_KEY(ZCLSD);
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EXT_KEY(ZCMOP);
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EXT_KEY(ZICBOM);
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EXT_KEY(ZICBOP);
···
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EXT_KEY(ZIHINTNTL);
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EXT_KEY(ZIHINTPAUSE);
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EXT_KEY(ZIHPM);
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EXT_KEY(ZILSD);
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EXT_KEY(ZIMOP);
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EXT_KEY(ZKND);
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EXT_KEY(ZKNE);