KVM: Do not calculate linear rip in emulation failure report

If we're not gonna do anything (case in which failure is already
reported), we do not need to even bother with calculating the linear rip.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index d731d4f..5d21bb6 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2081,11 +2081,11 @@ void kvm_report_emulation_failure(struct kvm_vcpu *vcpu, const char *context)
        unsigned long rip = vcpu->arch.rip;
        unsigned long rip_linear;
 
-       rip_linear = rip + get_segment_base(vcpu, VCPU_SREG_CS);
-
        if (reported)
                return;
 
+       rip_linear = rip + get_segment_base(vcpu, VCPU_SREG_CS);
+
        emulator_read_std(rip_linear, (void *)opcodes, 4, vcpu);
 
        printk(KERN_ERR "emulation failed (%s) rip %lx %02x %02x %02x %02x\n",