Commit c538dc79 authored by Suravee Suthikulpanit's avatar Suravee Suthikulpanit Committed by Paolo Bonzini
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KVM: SVM: Do not activate AVIC for SEV-enabled guest 



Since current AVIC implementation cannot support encrypted memory,
inhibit AVIC for SEV-enabled guest.

Signed-off-by: default avatarSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Message-Id: <20220408133710.54275-1-suravee.suthikulpanit@amd.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent af105c9c

arch/x86/include/asm/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -1052,6 +1052,7 @@ enum kvm_apicv_inhibit { 
	APICV_INHIBIT_REASON_X2APIC,

	APICV_INHIBIT_REASON_BLOCKIRQ,

	APICV_INHIBIT_REASON_ABSENT,

	APICV_INHIBIT_REASON_SEV,

};



struct kvm_arch {

arch/x86/kvm/svm/avic.c

+2 −1
Original line number Diff line number Diff line
@@ -837,7 +837,8 @@ bool avic_check_apicv_inhibit_reasons(enum kvm_apicv_inhibit reason) 
			  BIT(APICV_INHIBIT_REASON_IRQWIN) |

			  BIT(APICV_INHIBIT_REASON_PIT_REINJ) |

			  BIT(APICV_INHIBIT_REASON_X2APIC) |

			  BIT(APICV_INHIBIT_REASON_BLOCKIRQ);

			  BIT(APICV_INHIBIT_REASON_BLOCKIRQ) |

			  BIT(APICV_INHIBIT_REASON_SEV);



	return supported & BIT(reason);

}

arch/x86/kvm/svm/sev.c

+2 −0
Original line number Diff line number Diff line
@@ -260,6 +260,8 @@ static int sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp) 
	INIT_LIST_HEAD(&sev->regions_list);

	INIT_LIST_HEAD(&sev->mirror_vms);



	kvm_set_apicv_inhibit(kvm, APICV_INHIBIT_REASON_SEV);



	return 0;



e_free: