Commit b244c9fc authored Jul 15, 2016 by Cao, Lei Committed by Radim Krčmář Jul 16, 2016

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



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: Lei 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: Radim Krčmář <rkrcmar@redhat.com>

parent 6a907cd0

arch/x86/kvm/vmx.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -8214,6 +8214,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu)
		if ((vectoring_info & VECTORING_INFO_VALID_MASK) &&
		(exit_reason != EXIT_REASON_EXCEPTION_NMI &&
		exit_reason != EXIT_REASON_EPT_VIOLATION &&
		exit_reason != EXIT_REASON_PML_FULL &&
		exit_reason != EXIT_REASON_TASK_SWITCH)) {
		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV;

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