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| author | Huacai Chen <chenhuacai@loongson.cn> | 2022-12-10 22:39:59 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-12-14 08:36:11 +0800 |
| commit | 19e5eb15b00c5841b4b9bd9777af2865a40d2f39 (patch) | |
| tree | f471107baccd8668f7cd72a2e8f5b5f690e30506 /arch/loongarch/kernel/setup.c | |
| parent | 61a6fccc0bd2e8030b2672a52ef3f6706b2b2ee4 (diff) | |
LoongArch: Add alternative runtime patching mechanism
Introduce the "alternative" mechanism from ARM64 and x86 for LoongArch
to apply runtime patching. The main purpose of this patch is to provide
a framework. In future we can use this mechanism (i.e., the ALTERNATIVE
and ALTERNATIVE_2 macros) to optimize hotspot functions according to cpu
features.
Signed-off-by: Jun Yi <yijun@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kernel/setup.c')
| -rw-r--r-- | arch/loongarch/kernel/setup.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c index ae436def7ee9..53831bcb11ca 100644 --- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -31,7 +31,9 @@ #include <linux/swiotlb.h> #include <asm/addrspace.h> +#include <asm/alternative.h> #include <asm/bootinfo.h> +#include <asm/bugs.h> #include <asm/cache.h> #include <asm/cpu.h> #include <asm/dma.h> @@ -80,6 +82,11 @@ const char *get_system_type(void) return "generic-loongson-machine"; } +void __init check_bugs(void) +{ + alternative_instructions(); +} + static const char *dmi_string_parse(const struct dmi_header *dm, u8 s) { const u8 *bp = ((u8 *) dm) + dm->length; |