gdb: add 'osv info virtio'

Operating Systems / OSv - Avi Kivity [cloudius-systems.com] - 27 November 2013 10:41 UTC

Dumps virtio drivers and the state of their queues.

Sample output:

(gdb) osv info virtio
virtio::virtio_net at 0xffffc0003ff0ec00 queue 0 at 0xffffc0003ff2ba00 avail g=0xbe09 h=0xbe09 (0) used h=0xbe09 g=0xbd11 (248) used notifications: enabled queue 1 at 0xffffc0003ff2bc00 avail g=0xc951 h=0xc951 (0) used h=0xc951 g=0xc8fd (84) used notifications: enabled queue 2 at 0xffffc0003ff2bd00 avail g=0x0 h=0x0 (0) used h=0x0 g=0x0 (0) used notifications: enabled
virtio::virtio_blk at 0xffffc0003fefd400 queue 0 at 0xffffc0003fee5100 avail g=0x15f h=0x15f (0) used h=0x15f g=0x15f (0) used notifications: enabled

046e717 gdb: add 'osv info virtio'
scripts/loader.py | 45 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)

Upstream: github.com

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