Messages in this thread Patch in this message | | | From | Paolo Bonzini <> | Subject | [PATCH v3 09/15] KVM: SEV: disable DEBUG_SWAP by default | Date | Mon, 26 Feb 2024 14:03:38 -0500 |
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Disable all VMSA features in KVM_SEV_INIT and KVM_SEV_ES_INIT. They are not actually supported by SEV (a SEV guest does not have a VMSA to which you can apply features) and they cause unexpected changes in measurement for SEV-ES.
Going on, the way to enable them will be to use a new initialization ioctl that takes the VMSA features as a parameter.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- arch/x86/kvm/svm/sev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index b46612db0594..2db0b2b36120 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -252,7 +252,7 @@ static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp) sev->active = true; sev->es_active = argp->id == KVM_SEV_ES_INIT; - sev->vmsa_features = sev_supported_vmsa_features; + sev->vmsa_features = 0; ret = sev_asid_new(sev); if (ret) -- 2.39.1
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