[v1] virtio: early detect 'modern' virtio

[RFC PATCH v1 3/3] virtio-pci: use virtio_force_modern()

Halil Pasic posted 3 patches 4 years, 3 months ago

Diff against v2
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Maintainers: Halil Pasic <pasic@linux.ibm.com>, David Hildenbrand <david@redhat.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Cornelia Huck <cohuck@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Thomas Huth <thuth@redhat.com>, Richard Henderson <richard.henderson@linaro.org>

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[RFC PATCH v1 3/3] virtio-pci: use virtio_force_modern()

Posted by Halil Pasic 4 years, 3 months ago

Let us detect usage via the modern interface by tapping into the place
that implements the 'modern' reset.

Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
---
 hw/virtio/virtio-pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 6e16e2705c..8dd862da21 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1297,6 +1297,7 @@ static void virtio_pci_common_write(void *opaque, hwaddr addr,
 
         if (vdev->status == 0) {
             virtio_pci_reset(DEVICE(proxy));
+            virtio_force_modern(virtio_bus_get_device(&proxy->bus));
         }
 
         break;
-- 
2.25.1

[RFC PATCH v1 1/3] virtio: introduce virtio_force_modern()
[RFC PATCH v1 2/3] virtio-ccw: use virtio_force_modern
[RFC PATCH v1 3/3] virtio-pci: use virtio_force_modern()