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| author | Huacai Chen <chenhuacai@loongson.cn> | 2023-04-18 14:38:58 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-04-18 14:38:58 +0300 |
| commit | df830336045db1246d3245d3737fee9939c5f731 (patch) | |
| tree | 8a47ba8a0be9163c28452132e051ca380cda08b4 /arch/loongarch/include/asm/cpu-features.h | |
| parent | 16c52e503043aed1e2a2ce38d9249de5936c1f6b (diff) | |
| download | linux-df830336045db1246d3245d3737fee9939c5f731.tar.xz | |
LoongArch: Fix probing of the CRC32 feature
Not all LoongArch processors support CRC32 instructions. This feature
is indicated by CPUCFG1.CRC32 (Bit25) but it is wrongly defined in the
previous versions of the ISA manual (and so does in loongarch.h). The
CRC32 feature is set unconditionally now, so fix it.
BTW, expose the CRC32 feature in /proc/cpuinfo.
Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include/asm/cpu-features.h')
| -rw-r--r-- | arch/loongarch/include/asm/cpu-features.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/cpu-features.h b/arch/loongarch/include/asm/cpu-features.h index b07974218393..f6177f133477 100644 --- a/arch/loongarch/include/asm/cpu-features.h +++ b/arch/loongarch/include/asm/cpu-features.h @@ -42,6 +42,7 @@ #define cpu_has_fpu cpu_opt(LOONGARCH_CPU_FPU) #define cpu_has_lsx cpu_opt(LOONGARCH_CPU_LSX) #define cpu_has_lasx cpu_opt(LOONGARCH_CPU_LASX) +#define cpu_has_crc32 cpu_opt(LOONGARCH_CPU_CRC32) #define cpu_has_complex cpu_opt(LOONGARCH_CPU_COMPLEX) #define cpu_has_crypto cpu_opt(LOONGARCH_CPU_CRYPTO) #define cpu_has_lvz cpu_opt(LOONGARCH_CPU_LVZ) |