KVM: x86 emulator: use shadowed register in emulate_sysexit()

emulate_sysexit() should use shadowed registers copy instead of
looking into vcpu state directly.
Signed-off-by: NGleb Natapov <gleb@redhat.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

arch/x86/kvm/emulate.c

@@ -2063,8 +2063,8 @@ emulate_sysexit(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
 	ops->set_cached_descriptor(&ss, VCPU_SREG_SS, ctxt->vcpu);
 	ops->set_segment_selector(ss_sel, VCPU_SREG_SS, ctxt->vcpu);
 
-	c->eip = ctxt->vcpu->arch.regs[VCPU_REGS_RDX];
-	c->regs[VCPU_REGS_RSP] = ctxt->vcpu->arch.regs[VCPU_REGS_RCX];
+	c->eip = c->regs[VCPU_REGS_RDX];
+	c->regs[VCPU_REGS_RSP] = c->regs[VCPU_REGS_RCX];
 
 	return X86EMUL_CONTINUE;
 }