[Qemu-devel] [PATCH v2 00/10] virtio/vring: optimization patches

[Paolo Bonzini <pbonzini@redhat.com>]

This includes two optimization of virtio:

- "slimming down" VirtQueueElements by not including room for
  1024 buffers.  This makes malloc much faster.

- optimizations to limit the number of address_space_translate
  calls in virtio.c, from Vincenzo and myself.

Thanks,

Paolo

v1->v2: improved commit messages [Conny]
        add assertions on sz [Conny]
        change bools from 1 and 0 to "true" and "false" [Conny]
        update shadow avail_idx in virtio_queue_set_last_avail_idx [Michael]
        collect Reviewed-by
        
Paolo Bonzini (7):
  virtio: move VirtQueueElement at the beginning of the structs
  virtio: move allocation to virtqueue_pop/vring_pop
  virtio: introduce qemu_get/put_virtqueue_element
  virtio: introduce virtqueue_alloc_element
  virtio: slim down allocation of VirtQueueElements
  vring: slim down allocation of VirtQueueElements
  virtio: combine the read of a descriptor

Vincenzo Maffione (3):
  virtio: cache used_idx in a VirtQueue field
  virtio: read avail_idx from VQ only when necessary
  virtio: combine write of an entry into used ring

 hw/9pfs/9p.c                        |   2 +-
 hw/9pfs/virtio-9p-device.c          |  17 +-
 hw/9pfs/virtio-9p.h                 |   2 +-
 hw/block/dataplane/virtio-blk.c     |  11 +-
 hw/block/virtio-blk.c               |  23 +--
 hw/char/virtio-serial-bus.c         |  78 +++++----
 hw/display/virtio-gpu.c             |  25 ++-
 hw/input/virtio-input.c             |  24 ++-
 hw/net/virtio-net.c                 |  69 +++++---
 hw/scsi/virtio-scsi-dataplane.c     |  15 +-
 hw/scsi/virtio-scsi.c               |  26 ++-
 hw/virtio/dataplane/vring.c         |  62 ++++---
 hw/virtio/virtio-balloon.c          |  22 ++-
 hw/virtio/virtio-rng.c              |  10 +-
 hw/virtio/virtio.c                  | 340 +++++++++++++++++++++++++-----------
 include/hw/virtio/dataplane/vring.h |   2 +-
 include/hw/virtio/virtio-balloon.h  |   2 +-
 include/hw/virtio/virtio-blk.h      |   5 +-
 include/hw/virtio/virtio-net.h      |   2 +-
 include/hw/virtio/virtio-scsi.h     |  15 +-
 include/hw/virtio/virtio-serial.h   |   2 +-
 include/hw/virtio/virtio.h          |  13 +-
 22 files changed, 486 insertions(+), 281 deletions(-)

-- 
2.5.0