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Subject[PATCH 20/21] kvm/svm: check for nested VINTR flag in svm_interrupt_allowed
Date
Not checking for this flag breaks any nested hypervisor that does not
set VINTR. So fix it with this patch.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kvm/svm.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 089310d..8b32cc8 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2467,7 +2467,7 @@ static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)
return (vmcb->save.rflags & X86_EFLAGS_IF) &&
!(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
gif_set(svm) &&
- !is_nested(svm);
+ !(is_nested(svm) && (svm->vcpu.arch.hflags & HF_VINTR_MASK));
}

static void enable_irq_window(struct kvm_vcpu *vcpu)
--
1.6.3.3



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