This adds a wrapper function inject_realmode_interrupt() around the
emulator function emulate_int_real() to allow real mode interrupt injection.
Signed-off-by: Mohammed Gamal <m.gamal005@xxxxxxxxx>
---
arch/x86/kvm/x86.c | 14 ++++++++++++++
arch/x86/kvm/x86.h | 1 +
2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1722d37..5915f2e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3936,6 +3936,20 @@ static void inject_emulated_exception(struct kvm_vcpu *vcpu)
kvm_queue_exception(vcpu, ctxt->exception);
}
+int inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq)
+{
+ struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
+ int rc;
+
+ rc = emulate_int_real(ctxt, &emulate_ops, irq);
+
+ if (rc != X86EMUL_CONTINUE)
+ return EMULATE_FAIL;
+
+ return EMULATE_DONE;
+}
+EXPORT_SYMBOL_GPL(inject_realmode_interrupt);
+
static int handle_emulation_failure(struct kvm_vcpu *vcpu)
{
++vcpu->stat.insn_emulation_fail;
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index b7a4047..c6e8a4d 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -67,5 +67,6 @@ static inline int is_paging(struct kvm_vcpu *vcpu)
void kvm_before_handle_nmi(struct kvm_vcpu *vcpu);
void kvm_after_handle_nmi(struct kvm_vcpu *vcpu);
+int inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq);
#endif
--
1.7.0.4
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