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| author | Michael Roth <michael.roth@amd.com> | 2024-05-01 10:10:48 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-05-07 20:28:05 +0300 |
| commit | 4af663c2f64a8d252e690c60cf8b8abf22dc2951 (patch) | |
| tree | 3e5d4cb911e47f8303126647a753b9b8b57fdc11 /arch/x86/include | |
| parent | 8d1a36e42be6b0864c2c30f94536663b6f08fb48 (diff) | |
| download | linux-4af663c2f64a8d252e690c60cf8b8abf22dc2951.tar.xz | |
KVM: SEV: Allow per-guest configuration of GHCB protocol version
The GHCB protocol version may be different from one guest to the next.
Add a field to track it for each KVM instance and extend KVM_SEV_INIT2
to allow it to be configured by userspace.
Now that all SEV-ES support for GHCB protocol version 2 is in place, go
ahead and default to it when creating SEV-ES guests through the new
KVM_SEV_INIT2 interface. Keep the older KVM_SEV_ES_INIT interface
restricted to GHCB protocol version 1.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Message-ID: <20240501071048.2208265-5-michael.roth@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/uapi/asm/kvm.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h index 72ad5ace118d..9fae1b73b529 100644 --- a/arch/x86/include/uapi/asm/kvm.h +++ b/arch/x86/include/uapi/asm/kvm.h @@ -711,7 +711,9 @@ struct kvm_sev_cmd { struct kvm_sev_init { __u64 vmsa_features; __u32 flags; - __u32 pad[9]; + __u16 ghcb_version; + __u16 pad1; + __u32 pad2[8]; }; struct kvm_sev_launch_start { |