VIRTIO_PCI_QUEUE_NOTIFY is 16-bit and iowrite16 is used in drivers/virtio/virtio_pci.c to notify the other side. If the size doesn't match notification via mmio write will fail. Signed-off-by: Andreas Herrmann <andreas.herrmann@xxxxxxxxxxxxxxxxxx> --- virtio/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/virtio/pci.c b/virtio/pci.c index 7556239..aa9bf09 100644 --- a/virtio/pci.c +++ b/virtio/pci.c @@ -57,7 +57,7 @@ static int virtio_pci__init_ioeventfd(struct kvm *kvm, struct virtio_device *vde /* mmio */ ioevent.io_addr = vpci->mmio_addr + VIRTIO_PCI_QUEUE_NOTIFY; - ioevent.io_len = sizeof(u32); + ioevent.io_len = sizeof(u16); ioevent.fd = fds[1] = eventfd(0, 0); r = ioeventfd__add_event(&ioevent, flags); if (r) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
