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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2022-02-24 12:49:52 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-02-25 13:38:52 +0000 |
| commit | def8c222f054d18aac1fd065a50b9db5feaefa9d (patch) | |
| tree | d09cadc08823c4b0f5cb313e503836a03c1dd143 /arch/arm64/include/asm/cpufeature.h | |
| parent | be3256a086afb4048baf18e6a35a3a81482aa2fa (diff) | |
| download | linux-def8c222f054d18aac1fd065a50b9db5feaefa9d.tar.bz2 | |
arm64: Add support of PAuth QARMA3 architected algorithm
QARMA3 is relaxed version of the QARMA5 algorithm which expected to
reduce the latency of calculation while still delivering a suitable
level of security.
Support for QARMA3 can be discovered via ID_AA64ISAR2_EL1
APA3, bits [15:12] Indicates whether the QARMA3 algorithm is
implemented in the PE for address
authentication in AArch64 state.
GPA3, bits [11:8] Indicates whether the QARMA3 algorithm is
implemented in the PE for generic code
authentication in AArch64 state.
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220224124952.119612-4-vladimir.murzin@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/cpufeature.h')
| -rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index ef6be92b1921..fe7137ff6190 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -854,6 +854,7 @@ static inline unsigned int get_vmid_bits(u64 mmfr1) extern struct arm64_ftr_override id_aa64mmfr1_override; extern struct arm64_ftr_override id_aa64pfr1_override; extern struct arm64_ftr_override id_aa64isar1_override; +extern struct arm64_ftr_override id_aa64isar2_override; u32 get_kvm_ipa_limit(void); void dump_cpu_features(void); |