diff options
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/kvm_main.c | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index f267dbb5284..c8b8cfa332b 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1237,8 +1237,10 @@ int emulate_instruction(struct kvm_vcpu *vcpu, kvm_arch_ops->decache_regs(vcpu); kvm_arch_ops->set_rflags(vcpu, emulate_ctxt.eflags); - if (vcpu->mmio_is_write) + if (vcpu->mmio_is_write) { + vcpu->mmio_needed = 0; return EMULATE_DO_MMIO; + } return EMULATE_DONE; } @@ -1692,8 +1694,6 @@ static int complete_pio(struct kvm_vcpu *vcpu) vcpu->regs[VCPU_REGS_RSI] += delta; } - vcpu->run->io_completed = 0; - kvm_arch_ops->decache_regs(vcpu); io->count -= io->cur_count; @@ -1800,25 +1800,25 @@ static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) /* re-sync apic's tpr */ vcpu->cr8 = kvm_run->cr8; - if (kvm_run->io_completed) { - if (vcpu->pio.cur_count) { - r = complete_pio(vcpu); - if (r) - goto out; - } else if (!vcpu->mmio_is_write) { - memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8); - vcpu->mmio_read_completed = 1; - vcpu->mmio_needed = 0; - r = emulate_instruction(vcpu, kvm_run, - vcpu->mmio_fault_cr2, 0); - if (r == EMULATE_DO_MMIO) { - /* - * Read-modify-write. Back to userspace. - */ - kvm_run->exit_reason = KVM_EXIT_MMIO; - r = 0; - goto out; - } + if (vcpu->pio.cur_count) { + r = complete_pio(vcpu); + if (r) + goto out; + } + + if (vcpu->mmio_needed) { + memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8); + vcpu->mmio_read_completed = 1; + vcpu->mmio_needed = 0; + r = emulate_instruction(vcpu, kvm_run, + vcpu->mmio_fault_cr2, 0); + if (r == EMULATE_DO_MMIO) { + /* + * Read-modify-write. Back to userspace. + */ + kvm_run->exit_reason = KVM_EXIT_MMIO; + r = 0; + goto out; } } |