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Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r--arch/x86/kvm/x86.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c91007f8166..bd3161c6dae 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3551,8 +3551,10 @@ int kvm_emulate_pio(struct kvm_vcpu *vcpu, int in, int size, unsigned port)
trace_kvm_pio(vcpu->run->io.direction == KVM_EXIT_IO_OUT, port,
size, 1);
- val = kvm_register_read(vcpu, VCPU_REGS_RAX);
- memcpy(vcpu->arch.pio_data, &val, 4);
+ if (!vcpu->arch.pio.in) {
+ val = kvm_register_read(vcpu, VCPU_REGS_RAX);
+ memcpy(vcpu->arch.pio_data, &val, 4);
+ }
if (!kernel_pio(vcpu, vcpu->arch.pio_data)) {
complete_pio(vcpu);