[v3,27/30] KVM: x86 emulator: remove saved_eip

Commit Message

Gleb Natapov March 15, 2010, 2:38 p.m. UTC

None

Patch

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 1bedbb6..541f3c9 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2420,7 +2420,6 @@  int
 x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 {
 	u64 msr_data;
-	unsigned long saved_eip = 0;
 	struct decode_cache *c = &ctxt->decode;
 	int rc = X86EMUL_CONTINUE;
 
@@ -2432,7 +2431,6 @@  x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 	 */
 
 	memcpy(c->regs, ctxt->vcpu->arch.regs, sizeof c->regs);
-	saved_eip = c->eip;
 
 	if (ctxt->mode == X86EMUL_MODE_PROT64 && (c->d & No64)) {
 		kvm_queue_exception(ctxt->vcpu, UD_VECTOR);
@@ -2923,11 +2921,7 @@  writeback:
 	kvm_rip_write(ctxt->vcpu, c->eip);
 
 done:
-	if (rc == X86EMUL_UNHANDLEABLE) {
-		c->eip = saved_eip;
-		return -1;
-	}
-	return 0;
+	return (rc == X86EMUL_UNHANDLEABLE) ? -1 : 0;
 
 twobyte_insn:
 	switch (c->b) {
@@ -3204,6 +3198,5 @@  twobyte_insn:
 
 cannot_emulate:
 	DPRINTF("Cannot emulate %02x\n", c->b);
-	c->eip = saved_eip;
 	return -1;
 }