KVM: SEV: Add support to handle AP reset MSR protocol

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Add support for AP Reset Hold being invoked using the GHCB MSR protocol,
available in version 2 of the GHCB specification.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
Signed-off-by: Michael Roth <michael.roth@amd.com>
Message-ID: <20240501071048.2208265-2-michael.roth@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Tom Lendacky 2024-05-01 02:10:45 -05:00 • committed by Paolo Bonzini

parent a96cb3bf39

commit d916f00316

3 changed files with 53 additions and 10 deletions

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6

arch/x86/include/asm/sev-common.h

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56

arch/x86/kvm/svm/sev.c

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1

arch/x86/kvm/svm/svm.h

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