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| author | Sean Christopherson <seanjc@google.com> | 2022-09-21 00:31:51 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-09-26 12:37:18 -0400 |
| commit | 2ea89c7f7f7b192e32d1842dafc2e972cd14329b (patch) | |
| tree | 150f762fbe7309344f486d3c68c09aa0e9a4f3de /arch/x86 | |
| parent | 5b4ac1a1b713736f906fb0378a5bde612fdad538 (diff) | |
| download | linux-rpi-2ea89c7f7f7b192e32d1842dafc2e972cd14329b.tar.gz linux-rpi-2ea89c7f7f7b192e32d1842dafc2e972cd14329b.tar.bz2 linux-rpi-2ea89c7f7f7b192e32d1842dafc2e972cd14329b.zip | |
KVM: nVMX: Make an event request when pending an MTF nested VM-Exit
Set KVM_REQ_EVENT when MTF becomes pending to ensure that KVM will run
through inject_pending_event() and thus vmx_check_nested_events() prior
to re-entering the guest.
MTF currently works by virtue of KVM's hack that calls
kvm_check_nested_events() from kvm_vcpu_running(), but that hack will
be removed in the near future. Until that call is removed, the patch
introduces no real functional change.
Fixes: 5ef8acbdd687 ("KVM: nVMX: Emulate MTF when performing instruction emulation")
Cc: stable@vger.kernel.org
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220921003201.1441511-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 6 |
2 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 85318d803f4f..3a080051a4ec 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -6632,6 +6632,9 @@ static int vmx_set_nested_state(struct kvm_vcpu *vcpu, if (ret) goto error_guest_mode; + if (vmx->nested.mtf_pending) + kvm_make_request(KVM_REQ_EVENT, vcpu); + return 0; error_guest_mode: diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 94c314dc2393..9dba04b6b019 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -1665,10 +1665,12 @@ static void vmx_update_emulated_instruction(struct kvm_vcpu *vcpu) (!vcpu->arch.exception.pending || vcpu->arch.exception.vector == DB_VECTOR) && (!vcpu->arch.exception_vmexit.pending || - vcpu->arch.exception_vmexit.vector == DB_VECTOR)) + vcpu->arch.exception_vmexit.vector == DB_VECTOR)) { vmx->nested.mtf_pending = true; - else + kvm_make_request(KVM_REQ_EVENT, vcpu); + } else { vmx->nested.mtf_pending = false; + } } static int vmx_skip_emulated_instruction(struct kvm_vcpu *vcpu) |