---

yaml --- r: 215906 b: refs/heads/master c: 6399565 h: refs/heads/master v: v3
git-mirror · Oct 24, 2010 · 02f92b2 · 02f92b2
1 parent c39235c
commit 02f92b2
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Showing 3 changed files with 31 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4ab8e02404fcbc16beefac66de24dbb2706fe2f3
+refs/heads/master: 63995653ade16deacaea5b49ceaf6376314593ac
diff --git a/trunk/arch/x86/kvm/x86.c b/trunk/arch/x86/kvm/x86.c
@@ -4188,6 +4188,35 @@ static void init_emulate_ctxt(struct kvm_vcpu *vcpu)
 	memcpy(c->regs, vcpu->arch.regs, sizeof c->regs);
 }
 
+int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq)
+{
+	struct decode_cache *c = &vcpu->arch.emulate_ctxt.decode;
+	int ret;
+
+	init_emulate_ctxt(vcpu);
+
+	vcpu->arch.emulate_ctxt.decode.op_bytes = 2;
+	vcpu->arch.emulate_ctxt.decode.ad_bytes = 2;
+	vcpu->arch.emulate_ctxt.decode.eip = vcpu->arch.emulate_ctxt.eip;
+	ret = emulate_int_real(&vcpu->arch.emulate_ctxt, &emulate_ops, irq);
+
+	if (ret != X86EMUL_CONTINUE)
+		return EMULATE_FAIL;
+
+	vcpu->arch.emulate_ctxt.eip = c->eip;
+	memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
+	kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip);
+	kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
+
+	if (irq == NMI_VECTOR)
+		vcpu->arch.nmi_pending = false;
+	else
+		vcpu->arch.interrupt.pending = false;
+
+	return EMULATE_DONE;
+}
+EXPORT_SYMBOL_GPL(kvm_inject_realmode_interrupt);
+
 static int handle_emulation_failure(struct kvm_vcpu *vcpu)
 {
 	++vcpu->stat.insn_emulation_fail;

diff --git a/trunk/arch/x86/kvm/x86.h b/trunk/arch/x86/kvm/x86.h
@@ -72,6 +72,7 @@ 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 kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq);
 
 void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data);