KVM: x86 emulator: advance RIP outside x86 emulator code
Return new RIP as part of instruction emulation result instead of
updating KVM's RIP from x86 emulator code.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index d7a18a0..437f31b 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2496,8 +2496,9 @@
if (rc == X86EMUL_CONTINUE) {
memcpy(ctxt->vcpu->arch.regs, c->regs, sizeof c->regs);
- kvm_rip_write(ctxt->vcpu, c->eip);
rc = writeback(ctxt, ops);
+ if (rc == X86EMUL_CONTINUE)
+ ctxt->eip = c->eip;
}
return (rc == X86EMUL_UNHANDLEABLE) ? -1 : 0;
@@ -2554,7 +2555,7 @@
if (address_mask(c, c->regs[VCPU_REGS_RCX]) == 0) {
string_done:
ctxt->restart = false;
- kvm_rip_write(ctxt->vcpu, c->eip);
+ ctxt->eip = c->eip;
goto done;
}
/* The second termination condition only applies for REPE
@@ -3032,7 +3033,7 @@
ctxt->decode.mem_read.end = 0;
/* Commit shadow register state. */
memcpy(ctxt->vcpu->arch.regs, c->regs, sizeof c->regs);
- kvm_rip_write(ctxt->vcpu, c->eip);
+ ctxt->eip = c->eip;
ops->set_rflags(ctxt->vcpu, ctxt->eflags);
done: