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authorGleb Natapov <gleb@redhat.com>2010-09-20 10:15:32 +0200
committerAvi Kivity <avi@redhat.com>2010-10-24 10:52:56 +0200
commita0a07cd2c5fc8703db8a07287cdde3d29a286082 (patch)
tree79730f314db290e0def664eb25f90dc630ae1c2f /arch
parentf4f510508741680e423524c222f615276ca6222c (diff)
KVM: SVM: do not generate "external interrupt exit" if other exit is pending
Nested SVM checks for external interrupt after injecting nested exception. In case there is external interrupt pending the code generates "external interrupt exit" and overwrites previous exit info. If previously injected exception already generated exit it will be lost. Signed-off-by: Gleb Natapov <gleb@redhat.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/svm.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 1a85fc507cf..c929d007696 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1707,6 +1707,14 @@ static inline bool nested_svm_intr(struct vcpu_svm *svm)
if (!(svm->vcpu.arch.hflags & HF_HIF_MASK))
return false;
+ /*
+ * if vmexit was already requested (by intercepted exception
+ * for instance) do not overwrite it with "external interrupt"
+ * vmexit.
+ */
+ if (svm->nested.exit_required)
+ return false;
+
svm->vmcb->control.exit_code = SVM_EXIT_INTR;
svm->vmcb->control.exit_info_1 = 0;
svm->vmcb->control.exit_info_2 = 0;