Unverified Commit 191b27c7 authored by Jisheng Zhang's avatar Jisheng Zhang Committed by Palmer Dabbelt
Browse files

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: default avatarJisheng Zhang <jszhang@kernel.org>
Reviewed-by: default avatarAndrew Jones <ajones@ventanamicro.com>
Reviewed-by: default avatarHeiko Stuebner <heiko@sntech.de>
Reviewed-by: default avatarConor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230128172856.3814-3-jszhang@kernel.org


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent abcc445a

arch/riscv/kernel/cpufeature.c

+3 −0
Original line number Diff line number Diff line
@@ -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;