Il 20/03/2014 04:28, Bandan Das ha scritto:
Some L1 hypervisors such as Xen seem to be calling invept after
vmclear or before vmptrld on L2. In this case, proceed with
falling through and syncing roots as a case where
context wide invalidation can't be supported
Signed-off-by: Bandan Das <bsd@xxxxxxxxxx>
---
arch/x86/kvm/vmx.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index c707389..b407b3a 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -6435,8 +6435,9 @@ static int handle_invept(struct kvm_vcpu *vcpu)
switch (type) {
case VMX_EPT_EXTENT_CONTEXT:
- if ((operand.eptp & eptp_mask) !=
- (nested_ept_get_cr3(vcpu) & eptp_mask))
+ if (get_vmcs12(vcpu) &&
+ ((operand.eptp & eptp_mask) != (nested_ept_get_cr3(vcpu) &
+ eptp_mask)))
break;
case VMX_EPT_EXTENT_GLOBAL:
kvm_mmu_sync_roots(vcpu);
Please add a /* fall through */ comment as well.
Paolo
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