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| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2022-04-08 15:37:10 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-11 19:28:56 +0200 |
| commit | c538dc792ff7e456d777f585fdf96aa4e781ed66 (patch) | |
| tree | e0a8e92af5b139c93cb3edab6c871dd9e53459fd | |
| parent | Documentation: KVM: Add SPDX-License-Identifier tag (diff) | |
| download | linux-c538dc792ff7e456d777f585fdf96aa4e781ed66.tar.xz linux-c538dc792ff7e456d777f585fdf96aa4e781ed66.zip | |
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: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Message-Id: <20220408133710.54275-1-suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/svm/avic.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/svm/sev.c | 2 |
3 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 0d37ba442de3..92843fcdc1cf 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -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 { diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c index a1cf9c31273b..421619540ff9 100644 --- a/arch/x86/kvm/svm/avic.c +++ b/arch/x86/kvm/svm/avic.c @@ -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); } diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index c2fe89ecdb2d..537aaddc852f 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -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: |