[RFC,2/3] x86: Add inject_realmode_interrupt() wrapper

Commit Message

Mohammed Gamal Aug. 8, 2010, 7:24 p.m. UTC

None

Patch

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