[Qemu-devel] [PATCH 0/9] usb: replace buffers with iovecs.

[Gerd Hoffmann <kraxel@redhat.com>]

  Hi,

This patch series introduces iovecs to the USB subsystem, usb packet
payload is passed around as iovec instead of a linear buffer.  This
allows the host controllers to use scatter lists and to pass on data
buffers directly, so we can avoid an extra copy.

please review,
  Gerd

Gerd Hoffmann (9):
  Add iov_hexdump()
  Add iov_clear()
  move QEMUSGList typedef
  usb: use iovecs in USBPacket
  usb-serial: iovec support
  usb-host: iovec support
  usb-storage: iovec support
  uhci: remove buffer
  ehci: iovec support, remove buffer

 Makefile.objs          |    1 +
 dma.h                  |    4 +-
 hw/bt-hid.c            |   16 +++---
 hw/milkymist-softusb.c |    8 +-
 hw/usb-bt.c            |   31 ++++------
 hw/usb-ccid.c          |   46 ++++++++------
 hw/usb-ehci.c          |  160 ++++++++++++++++++++----------------------------
 hw/usb-hid.c           |    6 +-
 hw/usb-hub.c           |    8 ++-
 hw/usb-libhw.c         |   63 +++++++++++++++++++
 hw/usb-msd.c           |  109 ++++++++++++++++-----------------
 hw/usb-musb.c          |   22 +++---
 hw/usb-net.c           |   65 +++++++-------------
 hw/usb-ohci.c          |   23 +++----
 hw/usb-serial.c        |   26 +++++---
 hw/usb-uhci.c          |   51 +++++++--------
 hw/usb-wacom.c         |    6 +-
 hw/usb.c               |   86 +++++++++++++++++++++----
 hw/usb.h               |   13 +++-
 iov.c                  |   54 ++++++++++++++++
 iov.h                  |    4 +
 qemu-common.h          |    1 +
 usb-linux.c            |   48 +++++++++------
 23 files changed, 500 insertions(+), 351 deletions(-)
 create mode 100644 hw/usb-libhw.c