From b9585f53bcf1ada1fbac22c15fd723c65ef67ff1 Mon Sep 17 00:00:00 2001 From: Andrew Murray Date: Tue, 9 Apr 2019 10:52:45 +0100 Subject: arm64: Advertise ARM64_HAS_DCPODP cpu feature Advertise ARM64_HAS_DCPODP when both DC CVAP and DC CVADP are supported. Even though we don't use this feature now, we provide it for consistency with DCPOP and anticipate it being used in the future. Signed-off-by: Andrew Murray Reviewed-by: Dave Martin Reviewed-by: Suzuki K Poulose Signed-off-by: Will Deacon --- arch/arm64/kernel/cpufeature.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/arm64/kernel/cpufeature.c') diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index f8b682a3a9f4..9d18e45311fd 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1340,6 +1340,16 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .field_pos = ID_AA64ISAR1_DPB_SHIFT, .min_field_value = 1, }, + { + .desc = "Data cache clean to Point of Deep Persistence", + .capability = ARM64_HAS_DCPODP, + .type = ARM64_CPUCAP_SYSTEM_FEATURE, + .matches = has_cpuid_feature, + .sys_reg = SYS_ID_AA64ISAR1_EL1, + .sign = FTR_UNSIGNED, + .field_pos = ID_AA64ISAR1_DPB_SHIFT, + .min_field_value = 2, + }, #endif #ifdef CONFIG_ARM64_SVE { -- cgit v1.2.3-59-g8ed1b