linux-toradex.git/drivers/vhost, branch v3.0.34

vhost: support event index

2011-05-30T01:44:15+00:00

Support the new event index feature. When acked,
utilize it to reduce the # of interrupts sent to the guest.

Signed-off-by: Michael S. Tsirkin 
Signed-off-by: Rusty Russell

Correct occurrences of

2011-05-06T16:27:55+00:00

- Documentation/kvm/ to Documentation/virtual/kvm
- Documentation/uml/ to Documentation/virtual/uml
- Documentation/lguest/ to Documentation/virtual/lguest
throughout the kernel source tree.

Signed-off-by: Rob Landley 
Signed-off-by: Randy Dunlap

vhost-net: remove unlocked use of receive_queue

2011-03-13T21:08:19+00:00

Use of skb_queue_empty(&sock->sk->sk_receive_queue)
without taking the sk_receive_queue.lock is unsafe
or useless. Take it out.

Reported-by:  Eric Dumazet 
Signed-off-by: Michael S. Tsirkin

vhost: lock receive queue, not the socket

2011-03-13T21:08:04+00:00

vhost takes a sock lock to try and prevent
the skb from being pulled from the receive queue
after skb_peek.  However this is not the right lock to use for that,
sk_receive_queue.lock is. Fix that up.

Signed-off-by: Michael S. Tsirkin

vhost-net: Unify the code of mergeable and big buffer handling

2011-03-13T15:00:10+00:00

Codes duplication were found between the handling of mergeable and big
buffers, so this patch tries to unify them. This could be easily done
by adding a quota to the get_rx_bufs() which is used to limit the
number of buffers it returns (for mergeable buffer, the quota is
simply UIO_MAXIOV, for big buffers, the quota is just 1), and then the
previous handle_rx_mergeable() could be resued also for big buffers.

Signed-off-by: Jason Wang 
Signed-off-by: Michael S. Tsirkin

vhost-net: check the support of mergeable buffer outside the receive loop

2011-03-13T14:57:30+00:00

No need to check the support of mergeable buffer inside the recevie
loop as the whole handle_rx()_xx is in the read critical region.  So
this patch move it ahead of the receiving loop.

Signed-off-by: Jason Wang 
Signed-off-by: Michael S. Tsirkin

vhost: copy_from_user -> __copy_from_user

2011-03-08T16:03:05+00:00

copy_from_user is pretty high on perf top profile,
replacing it with __copy_from_user helps.
It's also safe because we do access_ok checks during setup.

Signed-off-by: Michael S. Tsirkin

vhost: Cleanup vhost.c and net.c

2011-03-08T16:02:47+00:00

Minor cleanup of vhost.c and net.c to match coding style.

Signed-off-by: Krishna Kumar 
Signed-off-by: Michael S. Tsirkin

vhost: rcu annotation fixup

2011-02-01T14:48:46+00:00

When built with rcu checks enabled, vhost triggers
bogus warnings as vhost features are read without
dev->mutex sometimes, and private pointer is read
with our kind of rcu where work serves as a
read side critical section.

Fixing it properly is not trivial.
Disable the warnings by stubbing out the checks for now.

Signed-off-by: Michael S. Tsirkin

vhost: fix signed/unsigned comparison

2011-01-10T08:03:39+00:00

To detect that a sequence number is done, we are doing math on unsigned
integers so the result is unsigned too. Not what was intended for the <=
comparison. The result is user stuck forever in flush call.
Convert to int to fix this.

Further, get rid of ({}) to make code clearer.

Signed-off-by: Michael S. Tsirkin