[v5,3/4] vhost-user-vsock-pci: force virtio version 1

Commit Message

Stefano Garzarella Sept. 21, 2020, 12:25 p.m. UTC

Commit 9b3a35ec82 ("virtio: verify that legacy support is not
accidentally on") added a safety check that requires to set
'disable-legacy=on' on vhost-user-vsock-pci device:

    $ ./qemu-system-x86_64 ... \
    -chardev socket,id=char0,reconnect=0,path=/tmp/vhost4.socket \
    -device vhost-user-vsock-pci,chardev=char0
        qemu-system-x86_64: -device vhost-user-vsock-pci,chardev=char0:
        device is modern-only, use disable-legacy=on

virtio-vsock was introduced after the release of VIRTIO 1.0
specifications, so it should be 'modern-only'.

This patch forces virtio version 1 and removes the 'transitional_name'
property, as done for vhost-vsock-pci, removing the need to specify
'disable-legacy=on' on vhost-user-vsock-pci device.

Cc: [e-mail]
Suggested-by: Cornelia Huck <[e-mail]>
Reviewed-by: Cornelia Huck <[e-mail]>
Signed-off-by: Stefano Garzarella <[e-mail]>
---
v4:
 - added comment in the code [Cornelia]
v2:
 - fixed commit message [Cornelia]
---
 hw/virtio/vhost-user-vsock-pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Patch

diff --git a/hw/virtio/vhost-user-vsock-pci.c b/hw/virtio/vhost-user-vsock-pci.c
index 763f89984e..72a96199cd 100644
--- a/hw/virtio/vhost-user-vsock-pci.c
+++ b/hw/virtio/vhost-user-vsock-pci.c
@@ -41,6 +41,9 @@  static void vhost_user_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     VHostUserVSockPCI *dev = VHOST_USER_VSOCK_PCI(vpci_dev);
     DeviceState *vdev = DEVICE(&dev->vdev);
 
+    /* unlike vhost-vsock, we do not need to care about pre-5.1 compat */
+    virtio_pci_force_virtio_1(vpci_dev);
+
     qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
 }
 
@@ -69,7 +72,6 @@  static void vhost_user_vsock_pci_instance_init(Object *obj)
 static const VirtioPCIDeviceTypeInfo vhost_user_vsock_pci_info = {
     .base_name             = TYPE_VHOST_USER_VSOCK_PCI,
     .generic_name          = "vhost-user-vsock-pci",
-    .transitional_name     = "vhost-user-vsock-pci-transitional",
     .non_transitional_name = "vhost-user-vsock-pci-non-transitional",
     .instance_size = sizeof(VHostUserVSockPCI),
     .instance_init = vhost_user_vsock_pci_instance_init,