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| author | Evan Green <evan@rivosinc.com> | 2023-04-08 01:10:58 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-04-19 00:48:03 +0200 |
| commit | ff77cf5b2e033d0bb5e3b7f83ebf65c5adc20d12 (patch) | |
| tree | 4ec62272a9dafefb45b548919808ef8a7d97ef10 /arch/riscv/include/asm | |
| parent | Linux 6.3-rc1 (diff) | |
| download | linux-ff77cf5b2e033d0bb5e3b7f83ebf65c5adc20d12.tar.xz linux-ff77cf5b2e033d0bb5e3b7f83ebf65c5adc20d12.zip | |
RISC-V: Move struct riscv_cpuinfo to new header
In preparation for tracking and exposing microarchitectural details to
userspace (like whether or not unaligned accesses are fast), move the
riscv_cpuinfo struct out to its own new cpufeatures.h header. It will
need to be used by more than just cpu.c.
Signed-off-by: Evan Green <evan@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Reviewed-by: Paul Walmsley <paul.walmsley@sifive.com>
Link: https://lore.kernel.org/r/20230407231103.2622178-2-evan@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/asm')
| -rw-r--r-- | arch/riscv/include/asm/cpufeature.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/cpufeature.h b/arch/riscv/include/asm/cpufeature.h new file mode 100644 index 000000000000..66ebaae449c8 --- /dev/null +++ b/arch/riscv/include/asm/cpufeature.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2022-2023 Rivos, Inc + */ + +#ifndef _ASM_CPUFEATURE_H +#define _ASM_CPUFEATURE_H + +/* + * These are probed via a device_initcall(), via either the SBI or directly + * from the corresponding CSRs. + */ +struct riscv_cpuinfo { + unsigned long mvendorid; + unsigned long marchid; + unsigned long mimpid; +}; + +DECLARE_PER_CPU(struct riscv_cpuinfo, riscv_cpuinfo); + +#endif |