On 05/18/2010 08:47 PM, Avi Kivity wrote: > On 05/18/2010 05:21 AM, Michael S. Tsirkin wrote: >> With PUBLISH_USED_IDX, guest tells us which used entries >> it has consumed. This can be used to reduce the number >> of interrupts: after we write a used entry, if the guest has not yet >> consumed the previous entry, or if the guest has already consumed the >> new entry, we do not need to interrupt. >> This imporves bandwidth by 30% under some workflows. > > Seems to be missing the cacheline alignment. > > Rusty's clarification did not satisfy me, I think it's needed. >
Oh, and this should definitely follow the patch to the virtio spec, not precede it. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
