From: Daniel Thompson <[email protected]> Currently it is not possible to detect features of the boot CPU until the other CPUs have been brought up.
This prevents us from reacting to features of the boot CPU until fairly late in the boot process. To solve this we allow a subset of features (that are likely to be common to all clusters) to be detected based on the boot CPU alone. Signed-off-by: Daniel Thompson <[email protected]> [[email protected]: check non-boot cpu missing early features, avoid duplicates between early features and normal features] Signed-off-by: Julien Thierry <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Will Deacon <[email protected]> Cc: Suzuki K Poulose <[email protected]> --- arch/arm64/kernel/cpufeature.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 9d1b06d..e03e897 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1030,7 +1030,7 @@ static void cpu_copy_el2regs(const struct arm64_cpu_capabilities *__unused) { .desc = "GIC system register CPU interface", .capability = ARM64_HAS_SYSREG_GIC_CPUIF, - .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .type = ARM64_CPUCAP_STRICT_BOOT_CPU_FEATURE, .matches = has_useable_gicv3_cpuif, .sys_reg = SYS_ID_AA64PFR0_EL1, .field_pos = ID_AA64PFR0_GIC_SHIFT, -- 1.9.1
