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authorLadi Prosek <lprosek@redhat.com>2017-03-31 10:19:26 +0200
committerRadim Krčmář <rkrcmar@redhat.com>2017-04-04 16:11:06 +0200
commitab007cc94ff9d82f5a8db8363b3becbd946e58cf (patch)
tree8a090b38f4911a71ff89986cdf513c2dd94aad41 /arch
parent34fcf05b1557f1f8d6801d9dde30ac1d13213ba3 (diff)
downloadlinux-ab007cc94ff9d82f5a8db8363b3becbd946e58cf.tar.bz2
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: 843e4330573c ("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>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/vmx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 2ee00dbbbd51..605183291069 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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;
}