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KVM: Split mmio completion into a function

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Make room for sse mmio completions.

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2010-01-19 14:20:10 +02:00
parent 70252a1053
commit 5287f194bf
1 changed files with 25 additions and 14 deletions
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39
arch/x86/kvm/x86.c
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@ -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);