> From: Michael S. Tsirkin <mst@xxxxxxxxxx> > Sent: Wednesday, September 7, 2022 10:30 AM [..] > > > actually how does this waste space? Is this because your device does > > > not have INDIRECT? > > VQ is 256 entries deep. > > Driver posted total of 256 descriptors. > > Each descriptor points to a page of 4K. > > These descriptors are chained as 4K * 16. > > So without indirect then? with indirect each descriptor can point to 16 > entries. > With indirect, can it post 256 * 16 size buffers even though vq depth is 256 entries? I recall that total number of descriptors with direct/indirect descriptors is limited to vq depth. Was there some recent clarification occurred in the spec to clarify this? _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
