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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2022-02-24 12:49:51 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-02-25 13:38:51 +0000 |
| commit | be3256a086afb4048baf18e6a35a3a81482aa2fa (patch) | |
| tree | ff0a5eb9ed8d2a7b599a5d548197cf86e978e84e /arch/arm64/kernel | |
| parent | da844beb6d9f97cb6fe4b443f9610a9fcc534f9d (diff) | |
| download | linux-be3256a086afb4048baf18e6a35a3a81482aa2fa.tar.bz2 | |
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 <vladimir.murzin@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220224124952.119612-3-vladimir.murzin@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/cpufeature.c | 20 |
1 files changed, 12 insertions, 8 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, |