KVM: Split mmio completion into a function

Make room for sse mmio completions.

Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3b234c1..bb6b9d3 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5441,6 +5441,27 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
        return r;
 }
 
+static int complete_mmio(struct kvm_vcpu *vcpu)
+{
+       struct kvm_run *run = vcpu->run;
+       int r;
+
+       if (!(vcpu->arch.pio.count || vcpu->mmio_needed))
+               return 1;
+
+       if (vcpu->mmio_needed) {
+               memcpy(vcpu->mmio_data, run->mmio.data, 8);
+               vcpu->mmio_read_completed = 1;
+               vcpu->mmio_needed = 0;
+       }
+       vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
+       r = emulate_instruction(vcpu, EMULTYPE_NO_DECODE);
+       srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
+       if (r != EMULATE_DONE)
+               return 0;
+       return 1;
+}
+
 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
        int r;
@@ -5467,20 +5488,10 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
                }
        }
 
-       if (vcpu->arch.pio.count || vcpu->mmio_needed) {
-               if (vcpu->mmio_needed) {
-                       memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
-                       vcpu->mmio_read_completed = 1;
-                       vcpu->mmio_needed = 0;
-               }
-               vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
-               r = emulate_instruction(vcpu, EMULTYPE_NO_DECODE);
-               srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
-               if (r != EMULATE_DONE) {
-                       r = 0;
-                       goto out;
-               }
-       }
+       r = complete_mmio(vcpu);
+       if (r <= 0)
+               goto out;
+
        if (kvm_run->exit_reason == KVM_EXIT_HYPERCALL)
                kvm_register_write(vcpu, VCPU_REGS_RAX,
                                     kvm_run->hypercall.ret);