Re: virtio_balloon regression in 5.19-rc3
On 20.06.22 20:49, Ben Hutchings wrote:
> I've tested a 5.19-rc3 kernel on top of QEMU/KVM with machine type
> pc-q35-5.2. It has a virtio balloon device defined in libvirt as:
>
> <memballoon model="virtio">
> <address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
> </memballoon>
>
> but the virtio_balloon driver fails to bind to it:
>
> virtio_balloon virtio4: init_vqs: add stat_vq failed
> virtio_balloon: probe of virtio4 failed with error -5
>
Hmm, I don't see any recent changes to drivers/virtio/virtio_balloon.c
virtqueue_add_outbuf() fails with -EIO if I'm not wrong. That's the
first call of virtqueue_add_outbuf() when virtio_balloon initializes.
Maybe something in generic virtio code changed?
--
Thanks,
David / dhildenb
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