From: Clément Léger Date: Wed, 20 Dec 2023 15:57:22 +0000 (+0100) Subject: riscv: hwprobe: export Zicond extension X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3359866b40a97038405c72e68097a92a4a9caa71;p=linux.git riscv: hwprobe: export Zicond extension Export the zicond extension to userspace using hwprobe. Signed-off-by: Clément Léger Link: https://lore.kernel.org/r/20231220155723.684081-7-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt --- diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst index bff68004ad43d..ee320fe7581b2 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -169,6 +169,11 @@ The following keys are defined: defined in the Atomic Compare-and-Swap (CAS) instructions manual starting from commit 5059e0ca641c ("update to ratified"). + * :c:macro:`RISCV_HWPROBE_EXT_ZICOND`: The Zicond extension is supported as + defined in the RISC-V Integer Conditional (Zicond) operations extension + manual starting from commit 95cf1f9 ("Add changes requested by Ved + during signoff") + * :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performance information about the selected set of processors. diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h index ac65bb43c8e72..fd7af0dddb12b 100644 --- a/arch/riscv/include/uapi/asm/hwprobe.h +++ b/arch/riscv/include/uapi/asm/hwprobe.h @@ -58,6 +58,7 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_EXT_ZFA (1ULL << 32) #define RISCV_HWPROBE_EXT_ZTSO (1ULL << 33) #define RISCV_HWPROBE_EXT_ZACAS (1ULL << 34) +#define RISCV_HWPROBE_EXT_ZICOND (1ULL << 35) #define RISCV_HWPROBE_KEY_CPUPERF_0 5 #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0) #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0) diff --git a/arch/riscv/kernel/sys_riscv.c b/arch/riscv/kernel/sys_riscv.c index 6c680c75ac0d4..cca9b1e356470 100644 --- a/arch/riscv/kernel/sys_riscv.c +++ b/arch/riscv/kernel/sys_riscv.c @@ -176,6 +176,7 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair, EXT_KEY(ZIHINTNTL); EXT_KEY(ZTSO); EXT_KEY(ZACAS); + EXT_KEY(ZICOND); if (has_vector()) { EXT_KEY(ZVBB);