KVM: SVM: Add support for SEV-ES GHCB MSR protocol function 0x002

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The GHCB specification defines a GHCB MSR protocol using the lower
12-bits of the GHCB MSR (in the hypervisor this corresponds to the
GHCB GPA field in the VMCB).

Function 0x002 is a request to set the GHCB MSR value to the SEV INFO as
per the specification via the VMCB GHCB GPA field.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <c23c163a505290a0d1b9efc4659b838c8c902cbc.1607620209.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Tom Lendacky 2020-12-10 11:09:49 -06:00 • committed by Paolo Bonzini

parent 291bd20d5d

commit 1edc14599e

2 changed files with 42 additions and 1 deletions

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26

arch/x86/kvm/svm/sev.c

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17

arch/x86/kvm/svm/svm.h

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