Re: [PATCH v3 10/25] virtio: add API to enable VQs early

2014-10-13 Thread Michael S. Tsirkin
On Mon, Oct 13, 2014 at 05:22:39PM +1030, Rusty Russell wrote: > "Michael S. Tsirkin" writes: > > virtio spec 0.9.X requires DRIVER_OK to be set before > > VQs are used, but some drivers use VQs before probe > > function returns. > > Since DRIVER_OK is set after probe, this violates the spec. > >

Re: [PATCH v3 10/25] virtio: add API to enable VQs early

2014-10-12 Thread Rusty Russell
"Michael S. Tsirkin" writes: > virtio spec 0.9.X requires DRIVER_OK to be set before > VQs are used, but some drivers use VQs before probe > function returns. > Since DRIVER_OK is set after probe, this violates the spec. > > Even though under virtio 1.0 transitional devices support this > behaviou

[PATCH v3 10/25] virtio: add API to enable VQs early

2014-10-12 Thread Michael S. Tsirkin
virtio spec 0.9.X requires DRIVER_OK to be set before VQs are used, but some drivers use VQs before probe function returns. Since DRIVER_OK is set after probe, this violates the spec. Even though under virtio 1.0 transitional devices support this behaviour, we want to make it possible for those ea