Commit 5436aa6c authored by Cao, Lei's avatar Cao, Lei Committed by Sasha Levin

KVM: VMX: handle PML full VMEXIT that occurs during event delivery

[ Upstream commit b244c9fc ]

With PML enabled, guest will shut down if a PML full VMEXIT occurs during
event delivery. According to Intel SDM 27.2.3, PML full VMEXIT can occur when
event is being delivered through IDT, so KVM should not exit to user space
with error. Instead, it should let EXIT_REASON_PML_FULL go through and the
event will be re-injected on the next VMENTRY.
Signed-off-by: default avatarLei Cao <lei.cao@stratus.com>
Cc: stable@vger.kernel.org
Fixes: 843e4330 ("KVM: VMX: Add PML support in VMX")
[Shortened the summary and Cc'd stable.]
Signed-off-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent aef1e06d
...@@ -7770,6 +7770,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu) ...@@ -7770,6 +7770,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
if ((vectoring_info & VECTORING_INFO_VALID_MASK) && if ((vectoring_info & VECTORING_INFO_VALID_MASK) &&
(exit_reason != EXIT_REASON_EXCEPTION_NMI && (exit_reason != EXIT_REASON_EXCEPTION_NMI &&
exit_reason != EXIT_REASON_EPT_VIOLATION && exit_reason != EXIT_REASON_EPT_VIOLATION &&
exit_reason != EXIT_REASON_PML_FULL &&
exit_reason != EXIT_REASON_TASK_SWITCH)) { exit_reason != EXIT_REASON_TASK_SWITCH)) {
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR; vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV; vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV;
......
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