From bb4b0f8a1bcbf8f4e3a0841aaefb3fd580d12fc9 Mon Sep 17 00:00:00 2001 From: Aleksa Paunovic Date: Thu, 24 Jul 2025 17:23:28 +0200 Subject: riscv: hwprobe: Add MIPS vendor extension probing 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 --- arch/riscv/include/uapi/asm/hwprobe.h | 1 + arch/riscv/include/uapi/asm/vendor/mips.h | 3 +++ 2 files changed, 4 insertions(+) create mode 100644 arch/riscv/include/uapi/asm/vendor/mips.h (limited to 'arch/riscv/include/uapi') diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h index aaf6ad970499..5d30a4fae37a 100644 --- a/arch/riscv/include/uapi/asm/hwprobe.h +++ b/arch/riscv/include/uapi/asm/hwprobe.h @@ -106,6 +106,7 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0 11 #define RISCV_HWPROBE_KEY_ZICBOM_BLOCK_SIZE 12 #define RISCV_HWPROBE_KEY_VENDOR_EXT_SIFIVE_0 13 +#define RISCV_HWPROBE_KEY_VENDOR_EXT_MIPS_0 14 /* Increase RISCV_HWPROBE_MAX_KEY when adding items. */ /* Flags */ diff --git a/arch/riscv/include/uapi/asm/vendor/mips.h b/arch/riscv/include/uapi/asm/vendor/mips.h new file mode 100644 index 000000000000..e65ab268b265 --- /dev/null +++ b/arch/riscv/include/uapi/asm/vendor/mips.h @@ -0,0 +1,3 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ + +#define RISCV_HWPROBE_VENDOR_EXT_XMIPSEXECTL BIT(0) -- cgit v1.2.3