Commit 0004c7c2 authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity
Browse files

KVM: Fix compound mmio 



mmio_index should be taken into account when copying data from
userspace.

Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 4947e7cd

arch/x86/kvm/x86.c

+2 −1
Original line number Diff line number Diff line
@@ -5576,7 +5576,8 @@ static int complete_mmio(struct kvm_vcpu *vcpu) 
	if (vcpu->mmio_needed) {

		vcpu->mmio_needed = 0;

		if (!vcpu->mmio_is_write)

			memcpy(vcpu->mmio_data, run->mmio.data, 8);

			memcpy(vcpu->mmio_data + vcpu->mmio_index,

			       run->mmio.data, 8);

		vcpu->mmio_index += 8;

		if (vcpu->mmio_index < vcpu->mmio_size) {

			run->exit_reason = KVM_EXIT_MMIO;