On 2020/5/9 上午12:32, Cindy Lu wrote:
From: Jason Wang <jasow...@redhat.com> With version 1, we can detect whether a queue is enabled via queue_enabled. Signed-off-by: Jason Wang <jasow...@redhat.com>
This patch should come before any vhost-vdpa patch. Thanks
--- hw/virtio/virtio-pci.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index c6b47a9c73..4aaf5d953e 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1103,6 +1103,18 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceState *d) return pci_get_address_space(dev); }+static bool virtio_pci_queue_enabled(DeviceState *d, int n)+{ + VirtIOPCIProxy *proxy = VIRTIO_PCI(d); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + + if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { + return proxy->vqs[vdev->queue_sel].enabled; + } + + return virtio_queue_get_desc_addr(vdev, n) != 0; +} + static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy, struct virtio_pci_cap *cap) { @@ -2053,6 +2065,7 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) k->ioeventfd_enabled = virtio_pci_ioeventfd_enabled; k->ioeventfd_assign = virtio_pci_ioeventfd_assign; k->get_dma_as = virtio_pci_get_dma_as; + k->queue_enabled = virtio_pci_queue_enabled; }static const TypeInfo virtio_pci_bus_info = {
