On 06/29/2011 12:31 PM, Michael S. Tsirkin wrote: > On Wed, Jun 29, 2011 at 12:06:29PM +0200, Paolo Bonzini wrote: >> On 06/29/2011 12:03 PM, Christoph Hellwig wrote: >>>> I agree here, in fact I misread Hannes's comment as "if a driver >>>> uses more than one queue it is responsibility of the driver to >>>> ensure strict request ordering". If you send requests to different >>>> queues, you know that those requests are independent. I don't think >>>> anything else is feasible in the virtio framework. >>> >>> That doesn't really fit very well with the SAM model. If we want >>> to use multiple queues for a single LUN it has to be transparent to >>> the SCSI command stream. Then again I don't quite see the use for >>> that anyway. >> >> Agreed, I see a use for multiple queues (MSI-X), but not for >> multiple queues shared by a single LUN. > > Then let's make it explicit in the spec? What, forbid it or say ordering is not guaranteed? The latter is already explicit with the wording suggested in the thread. Paolo _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
