diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index 9c6d15f07658738b9a05346df98dcbd55ce3a86a..a997bcc6d5da9f10cd395a7a15d4aa551c1210e5 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -54,7 +54,8 @@ #define ARM64_HAS_MPAM 33 #define ARM64_HAS_IRQ_PRIO_MASKING 34 #define ARM64_WORKAROUND_1463225 35 +#define ARM64_HAS_CRC32 36 -#define ARM64_NCAPS 36 +#define ARM64_NCAPS 37 #endif /* __ASM_CPUCAPS_H */ diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 33c6ca4ed1c4d13a7f38313229e06406236e38f3..eb8d6e3b62644af7354c103aa6dc5e34eb84ac78 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1301,6 +1301,15 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .min_field_value = 1, }, #endif + { + .desc = "CRC32 instructions", + .capability = ARM64_HAS_CRC32, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .matches = has_cpuid_feature, + .sys_reg = SYS_ID_AA64ISAR0_EL1, + .field_pos = ID_AA64ISAR0_CRC32_SHIFT, + .min_field_value = 1, + }, {}, };