[PATCH 16/24] arm64: cpucaps: Add GCIE capability
From: Lorenzo Pieralisi
Date: Tue Apr 08 2025 - 07:00:59 EST
Implement the GCIE capability as a strict boot cpu capability to
detect whether architectural GICv5 support is available in HW.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/kernel/cpufeature.c | 7 +++++++
arch/arm64/tools/cpucaps | 1 +
2 files changed, 8 insertions(+)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 9c4d6d552b25cb3a31d1fb267bd73d3f82513e69..8c60591633f3d435ad9b80a10e484f26af328964 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -3041,6 +3041,13 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_pmuv3,
},
#endif
+ {
+ .desc = "GCIE",
+ .type = ARM64_CPUCAP_STRICT_BOOT_CPU_FEATURE,
+ .capability = ARM64_HAS_GCIE,
+ .matches = has_cpuid_feature,
+ ARM64_CPUID_FIELDS(ID_AA64PFR2_EL1, GCIE, IMP)
+ },
{},
};
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index 772c1b008e437ed34cedb1c0f663c4dcea8f6759..e87e4bc2501f6b86352c03bd35adf33c160a577c 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -29,6 +29,7 @@ HAS_EVT
HAS_FPMR
HAS_FGT
HAS_FPSIMD
+HAS_GCIE
HAS_GCS
HAS_GENERIC_AUTH
HAS_GENERIC_AUTH_ARCH_QARMA3
--
2.48.0