[Qemu-devel] [BUG] virtio-net linux driver fails to probe on MIPS Malta since 'hw/virtio-pci: fix virtio behaviour'

[James Hogan]

Hi,

I've bisected the following failure of the virtio_net linux v4.10 driver
to probe in QEMU v2.9.0-rc1 emulating a MIPS Malta machine:

virtio_net virtio0: virtio: device uses modern interface but does not have 
VIRTIO_F_VERSION_1
virtio_net: probe of virtio0 failed with error -22

To QEMU commit 9a4c0e220d8a ("hw/virtio-pci: fix virtio behaviour").

It appears that adding ",disable-modern=on,disable-legacy=off" to the
virtio-net -device makes it work again.

I presume this should really just work out of the box. Any ideas why it
isn't?

Cheers
James

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