virtio: MSI-X support

Here's the latest draft of virtio patches.
This is on top of Rusty's recent virtqueue list + name patch.

Michael S. Tsirkin (3):
virtio: find_vqs/del_vqs virtio operations
virtio_pci: split up vp_interrupt
virtio_pci: optional MSI-X support

 drivers/block/virtio_blk.c          |    6 +-
 drivers/char/hw_random/virtio-rng.c |    6 +-
 drivers/char/virtio_console.c       |   26 ++--
 drivers/lguest/lguest_device.c      |   36 ++++-
 drivers/net/virtio_net.c            |   45 ++---
 drivers/s390/kvm/kvm_virtio.c       |   36 ++++-
 drivers/virtio/virtio_balloon.c     |   27 ++--
 drivers/virtio/virtio_pci.c         |  301 ++++++++++++++++++++++++++++++-----
 include/linux/virtio_config.h       |   46 ++++--
 include/linux/virtio_pci.h          |   10 +-
 net/9p/trans_virtio.c               |    2 +-
 11 files changed, 423 insertions(+), 118 deletions(-)