virtio-net: fill only rx queues which are being used

Due to MQ support we may allocate a whole bunch of rx queues but
never use them. With this patch we'll safe the space used by
the receive buffers until they are actually in use:

sh-4.2# free -h
             total       used       free     shared    buffers     cached
Mem:          490M        35M       455M         0B         0B       4.1M
-/+ buffers/cache:        31M       459M
Swap:           0B         0B         0B
sh-4.2# ethtool -L eth0 combined 8
sh-4.2# free -h
             total       used       free     shared    buffers     cached
Mem:          490M       162M       327M         0B         0B       4.1M
-/+ buffers/cache:       158M       331M
Swap:           0B         0B         0B

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
lguest: improve code readability in lg_cpu_start.

Make the container_of call friendlier and fix some comment slip-ups.

Signed-off-by: Cosmin Paraschiv <csmnprschv@gmail.com>
Cc: Daniel Baluta <dbaluta@ixiacom.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
caif_virtio: Remove bouncing email addresses

Remove our (soon to be) bouncing email addresses,
and update Dmitri's address.
Dmitry will take over as maintainer for CAIF from now on.

Cc: Vikram Arv <vikram.arv@stericsson.com>
Cc: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com>
Cc: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Dmity Tarnyagin <dmitry.tarnyagin@lockless.no>