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KVM: nVMX: do not leak PML full vmexit to L1 

The PML feature is not exposed to guests so we should not be forwarding
the vmexit either.

This commit fixes BSOD 0x20001 (HYPERVISOR_ERROR) when running Hyper-V
enabled Windows Server 2016 in L1 on hardware that supports PML.

Fixes: 843e433057 ("KVM: VMX: Add PML support in VMX")
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Ladi Prosek 2017-03-31 10:19:26 +02:00 committed by Radim Krčmář
parent 34fcf05b15
commit ab007cc94f
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kvm/vmx.c
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@ -8198,6 +8198,9 @@ static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu)
return nested_cpu_has2(vmcs12, SECONDARY_EXEC_XSAVES);
case EXIT_REASON_PREEMPTION_TIMER:
return false;
case EXIT_REASON_PML_FULL:
/* We don't expose PML support to L1. */
return false;
default:
return true;
}