From be3256a086afb4048baf18e6a35a3a81482aa2fa Mon Sep 17 00:00:00 2001 From: Vladimir Murzin Date: Thu, 24 Feb 2022 12:49:51 +0000 Subject: [PATCH] arm64: cpufeature: Mark existing PAuth architected algorithm as QARMA5 In preparation of supporting PAuth QARMA3 architected algorithm mark existing one as QARMA5, so we can distingwish between two. Signed-off-by: Vladimir Murzin Acked-by: Marc Zyngier Link: https://lore.kernel.org/r/20220224124952.119612-3-vladimir.murzin@arm.com Signed-off-by: Will Deacon --- arch/arm64/kernel/cpufeature.c | 20 ++++++++++++-------- arch/arm64/tools/cpucaps | 4 ++-- 2 files changed, 14 insertions(+), 10 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 3271770b60d6..1b955bea2856 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1835,15 +1835,19 @@ static bool has_address_auth_cpucap(const struct arm64_cpu_capabilities *entry, static bool has_address_auth_metacap(const struct arm64_cpu_capabilities *entry, int scope) { - return has_address_auth_cpucap(cpu_hwcaps_ptrs[ARM64_HAS_ADDRESS_AUTH_ARCH], scope) || - has_address_auth_cpucap(cpu_hwcaps_ptrs[ARM64_HAS_ADDRESS_AUTH_IMP_DEF], scope); + bool api = has_address_auth_cpucap(cpu_hwcaps_ptrs[ARM64_HAS_ADDRESS_AUTH_IMP_DEF], scope); + bool apa = has_address_auth_cpucap(cpu_hwcaps_ptrs[ARM64_HAS_ADDRESS_AUTH_ARCH_QARMA5], scope); + + return apa || api; } static bool has_generic_auth(const struct arm64_cpu_capabilities *entry, int __unused) { - return __system_matches_cap(ARM64_HAS_GENERIC_AUTH_ARCH) || - __system_matches_cap(ARM64_HAS_GENERIC_AUTH_IMP_DEF); + bool gpi = __system_matches_cap(ARM64_HAS_GENERIC_AUTH_IMP_DEF); + bool gpa = __system_matches_cap(ARM64_HAS_GENERIC_AUTH_ARCH_QARMA5); + + return gpa || gpi; } #endif /* CONFIG_ARM64_PTR_AUTH */ @@ -2230,8 +2234,8 @@ static const struct arm64_cpu_capabilities arm64_features[] = { }, #ifdef CONFIG_ARM64_PTR_AUTH { - .desc = "Address authentication (architected algorithm)", - .capability = ARM64_HAS_ADDRESS_AUTH_ARCH, + .desc = "Address authentication (architected QARMA5 algorithm)", + .capability = ARM64_HAS_ADDRESS_AUTH_ARCH_QARMA5, .type = ARM64_CPUCAP_BOOT_CPU_FEATURE, .sys_reg = SYS_ID_AA64ISAR1_EL1, .sign = FTR_UNSIGNED, @@ -2255,8 +2259,8 @@ static const struct arm64_cpu_capabilities arm64_features[] = { .matches = has_address_auth_metacap, }, { - .desc = "Generic authentication (architected algorithm)", - .capability = ARM64_HAS_GENERIC_AUTH_ARCH, + .desc = "Generic authentication (architected QARMA5 algorithm)", + .capability = ARM64_HAS_GENERIC_AUTH_ARCH_QARMA5, .type = ARM64_CPUCAP_SYSTEM_FEATURE, .sys_reg = SYS_ID_AA64ISAR1_EL1, .sign = FTR_UNSIGNED, diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps index 9c65b1e25a96..4c39247581f6 100644 --- a/arch/arm64/tools/cpucaps +++ b/arch/arm64/tools/cpucaps @@ -7,7 +7,7 @@ BTI HAS_32BIT_EL0_DO_NOT_USE HAS_32BIT_EL1 HAS_ADDRESS_AUTH -HAS_ADDRESS_AUTH_ARCH +HAS_ADDRESS_AUTH_ARCH_QARMA5 HAS_ADDRESS_AUTH_IMP_DEF HAS_AMU_EXTN HAS_ARMv8_4_TTL @@ -21,7 +21,7 @@ HAS_E0PD HAS_ECV HAS_EPAN HAS_GENERIC_AUTH -HAS_GENERIC_AUTH_ARCH +HAS_GENERIC_AUTH_ARCH_QARMA5 HAS_GENERIC_AUTH_IMP_DEF HAS_IRQ_PRIO_MASKING HAS_LDAPR -- 2.11.0