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Diffstat (limited to 'docs/system/arm')
| -rw-r--r-- | docs/system/arm/cpu-features.rst | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/docs/system/arm/cpu-features.rst b/docs/system/arm/cpu-features.rst index 35196a6b75..c455442eaf 100644 --- a/docs/system/arm/cpu-features.rst +++ b/docs/system/arm/cpu-features.rst @@ -211,6 +211,27 @@ the list of KVM VCPU features and their descriptions. influence the guest scheduler behavior and/or be exposed to the guest userspace. +TCG VCPU Features +================= + +TCG VCPU features are CPU features that are specific to TCG. +Below is the list of TCG VCPU features and their descriptions. + + pauth Enable or disable `FEAT_Pauth`, pointer + authentication. By default, the feature is + enabled with `-cpu max`. + + pauth-impdef When `FEAT_Pauth` is enabled, either the + *impdef* (Implementation Defined) algorithm + is enabled or the *architected* QARMA algorithm + is enabled. By default the impdef algorithm + is disabled, and QARMA is enabled. + + The architected QARMA algorithm has good + cryptographic properties, but can be quite slow + to emulate. The impdef algorithm used by QEMU + is non-cryptographic but significantly faster. + SVE CPU Properties ================== |