vfio: ccw: validate the count field of a ccw before pinning

Browse source

If the count field of a ccw is zero, there is no need to
try to pin page(s) for it. Let's check the count value
before starting pinning operations.

Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20171011023822.42948-3-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

...

This commit is contained in:

Dong Jia Shi 2017-10-11 04:38:22 +02:00 • committed by Cornelia Huck

parent 688c29533f

commit 4cebc5d6a6

1 changed files with 17 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

18

drivers/s390/cio/vfio_ccw_cp.c

View file