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

2014-10-13 Thread Rusty Russell
Michael S. Tsirkin m...@redhat.com 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

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 m...@redhat.com 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.

[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