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| author | Avi Kivity | 2010-01-19 13:20:10 +0100 |
|---|---|---|
| committer | Avi Kivity | 2011-05-11 13:56:58 +0200 |
| commit | 5287f194bf0d7062d6d99b725366202556f03e28 (patch) | |
| tree | 8c4c60bfe927cd17ba5ab88a9a3ae0fbeda4bde6 /arch/x86/kvm/x86.c | |
| parent | KVM: extend in-kernel mmio to handle >8 byte transactions (diff) | |
| download | kernel-qcow2-linux-5287f194bf0d7062d6d99b725366202556f03e28.tar.gz kernel-qcow2-linux-5287f194bf0d7062d6d99b725366202556f03e28.tar.xz kernel-qcow2-linux-5287f194bf0d7062d6d99b725366202556f03e28.zip | |
KVM: Split mmio completion into a function
Make room for sse mmio completions.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 39 |
1 files changed, 25 insertions, 14 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 3b234c18b635..bb6b9d3f5e93 100644 --- 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); |