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| author | Dave Martin <Dave.Martin@arm.com> | 2019-04-18 18:41:38 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2019-04-23 18:02:00 +0100 |
| commit | 06a916feca2b262ab0c1a2aeb68882f4b1108a07 (patch) | |
| tree | 7687db5cfb7163edb21e8f6d13bcea9c5c8488e8 /Documentation/arm64/cpu-feature-registers.txt | |
| parent | dd523791c939cfe642557cb2fac754ac0fed80fe (diff) | |
| download | lwn-06a916feca2b262ab0c1a2aeb68882f4b1108a07.tar.gz lwn-06a916feca2b262ab0c1a2aeb68882f4b1108a07.zip | |
arm64: Expose SVE2 features for userspace
This patch provides support for reporting the presence of SVE2 and
its optional features to userspace.
This will also enable visibility of SVE2 for guests, when KVM
support for SVE-enabled guests is available.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation/arm64/cpu-feature-registers.txt')
| -rw-r--r-- | Documentation/arm64/cpu-feature-registers.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/arm64/cpu-feature-registers.txt b/Documentation/arm64/cpu-feature-registers.txt index d4b4dd1fe786..684a0da39378 100644 --- a/Documentation/arm64/cpu-feature-registers.txt +++ b/Documentation/arm64/cpu-feature-registers.txt @@ -209,6 +209,22 @@ infrastructure: | AT | [35-32] | y | x--------------------------------------------------x + 6) ID_AA64ZFR0_EL1 - SVE feature ID register 0 + + x--------------------------------------------------x + | Name | bits | visible | + |--------------------------------------------------| + | SM4 | [43-40] | y | + |--------------------------------------------------| + | SHA3 | [35-32] | y | + |--------------------------------------------------| + | BitPerm | [19-16] | y | + |--------------------------------------------------| + | AES | [7-4] | y | + |--------------------------------------------------| + | SVEVer | [3-0] | y | + x--------------------------------------------------x + Appendix I: Example --------------------------- |