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| author | Jisheng Zhang <jszhang@kernel.org> | 2023-01-28 20:28:45 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-02-01 10:29:34 +0300 |
| commit | 191b27c7c0e8c1a587832f8680132564743af76c (patch) | |
| tree | e8bde942e8caaa49ead8676a59b8e55e1f4a39db /arch/riscv/kernel | |
| parent | abcc445acdbeb561e881fcbd8e1dc4684628cc9b (diff) | |
| download | linux-191b27c7c0e8c1a587832f8680132564743af76c.tar.xz | |
riscv: cpufeature: detect RISCV_ALTERNATIVES_EARLY_BOOT earlier
Currently riscv_cpufeature_patch_func() does nothing at the
RISCV_ALTERNATIVES_EARLY_BOOT stage. Add a check to detect whether we
are in this stage and exit early. This will allow us to use
riscv_cpufeature_patch_func() for scanning of all ISA extensions.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230128172856.3814-3-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/kernel')
| -rw-r--r-- | arch/riscv/kernel/cpufeature.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 62443fd32fa7..59e20cad1b3d 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -330,6 +330,9 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin, struct alt_entry *alt; u32 tmp; + if (stage == RISCV_ALTERNATIVES_EARLY_BOOT) + return; + for (alt = begin; alt < end; alt++) { if (alt->vendor_id != 0) continue; |