[PATCH v2 03/13] riscv: cpufeature: detect RISCV_ALTERNATIVES_EARLY_BOOT earlier

Jisheng Zhang
2022-12-04T17:57:25Z

Now, the riscv_cpufeature_patch_func() do nothing in the stage of
RISCV_ALTERNATIVES_EARLY_BOOT. We can move the detection of "early
boot" stage earlier.

In following patch, we will make riscv_cpufeature_patch_func() scans
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>
---
arch/riscv/kernel/cpufeature.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 364d1fe86bea..a4d2af67e05c 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -305,6 +305,9 @@ 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;
--
2.37.2