search for: virtqueue_start_buf

...uest into a scatterlist internal to the driver. It cannot just use the one that was prepared by the upper SCSI layers. This series adds a different set of APIs for adding a buffer to a virtqueue. The new API lets you pass the buffers piecewise, wrapping multiple calls to virtqueue_add_sg between virtqueue_start_buf and virtqueue_end_buf. Letting drivers call virtqueue_add_sg multiple times if they already have a scatterlist provided by someone else simplifies the code and, for virtio-scsi, it saves the copying and the related locking. One major difference between virtqueue_add_buf and virtqueue_add_sg is th...

...uest into a scatterlist internal to the driver. It cannot just use the one that was prepared by the upper SCSI layers. This series adds a different set of APIs for adding a buffer to a virtqueue. The new API lets you pass the buffers piecewise, wrapping multiple calls to virtqueue_add_sg between virtqueue_start_buf and virtqueue_end_buf. Letting drivers call virtqueue_add_sg multiple times if they already have a scatterlist provided by someone else simplifies the code and, for virtio-scsi, it saves the copying and the related locking. One major difference between virtqueue_add_buf and virtqueue_add_sg is th...

...SCSI layers. (virtio-blk has a little more flexibility in that it handles itself the preparation of the scatterlist). This series adds a different set of APIs for adding a buffer to a virtqueue. The new API lets you pass the buffers piecewise, wrapping multiple calls to virtqueue_add_sg between virtqueue_start_buf and virtqueue_end_buf. Letting drivers call virtqueue_add_sg multiple times if they already have a scatterlist provided by someone else simplifies the code and, for virtio-scsi, it saves the copying and related locking. One major difference between virtqueue_add_buf and virtqueue_add_sg is that t...

...SCSI layers. (virtio-blk has a little more flexibility in that it handles itself the preparation of the scatterlist). This series adds a different set of APIs for adding a buffer to a virtqueue. The new API lets you pass the buffers piecewise, wrapping multiple calls to virtqueue_add_sg between virtqueue_start_buf and virtqueue_end_buf. Letting drivers call virtqueue_add_sg multiple times if they already have a scatterlist provided by someone else simplifies the code and, for virtio-scsi, it saves the copying and related locking. One major difference between virtqueue_add_buf and virtqueue_add_sg is that t...

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's

Hi all, this series adds multiqueue support to the virtio-scsi driver, based on Jason Wang's work on virtio-net. It uses a simple queue steering algorithm that expects one queue per CPU. LUNs in the same target always use the same queue (so that commands are not reordered); queue switching occurs when the request being queued is the only one for the target. Also based on Jason's

...ybe), the rest I'm not so sure about. Thanks, Rusty. Paolo Bonzini (3): scatterlist: introduce sg_unmark_end virtio-blk: reorganize virtblk_add_req virtio-blk: use virtqueue_add_sgs on req path Rusty Russell (13): virtio_ring: virtqueue_add_sgs, to add multiple sgs. virtio-blk: use virtqueue_start_buf on bio path virtio_blk: remove nents member. virtio_ring: don't count elements twice for add_buf path. virtio_ring: virtqueue_add_outbuf / virtqueue_add_inbuf. virtio_net: use simplified virtqueue accessors. virtio_net: use virtqueue_add_sgs[] for command buffers. virtio_rng: use si...

...ybe), the rest I'm not so sure about. Thanks, Rusty. Paolo Bonzini (3): scatterlist: introduce sg_unmark_end virtio-blk: reorganize virtblk_add_req virtio-blk: use virtqueue_add_sgs on req path Rusty Russell (13): virtio_ring: virtqueue_add_sgs, to add multiple sgs. virtio-blk: use virtqueue_start_buf on bio path virtio_blk: remove nents member. virtio_ring: don't count elements twice for add_buf path. virtio_ring: virtqueue_add_outbuf / virtqueue_add_inbuf. virtio_net: use simplified virtqueue accessors. virtio_net: use virtqueue_add_sgs[] for command buffers. virtio_rng: use si...