diff options
-rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 1 | ||||
-rw-r--r-- | arch/arm64/kernel/cpufeature.c | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 674cadd2e77c..f595f7ddd43b 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -34,6 +34,7 @@ struct arm64_cpu_capabilities { const char *desc; u16 capability; bool (*matches)(const struct arm64_cpu_capabilities *); + void (*enable)(void); union { struct { /* To be used for erratum handling only */ u32 midr_model; diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 7542a07a0a6d..74fd0f74b065 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -63,6 +63,12 @@ void check_cpu_capabilities(const struct arm64_cpu_capabilities *caps, pr_info("%s %s\n", info, caps[i].desc); cpus_set_cap(caps[i].capability); } + + /* second pass allows enable() to consider interacting capabilities */ + for (i = 0; caps[i].desc; i++) { + if (cpus_have_cap(caps[i].capability) && caps[i].enable) + caps[i].enable(); + } } void check_local_cpu_features(void) |