diff options
| author |   Eric Farman <farman@linux.ibm.com> | 2019-07-02 20:09:28 +0200 |
|---|---|---|
| committer |   Cornelia Huck <cohuck@redhat.com> | 2019-07-05 07:58:53 +0200 |
| commit | c382cbc6dbf513d73cf896ad43a3789ad42c2e2f (patch) | |
| tree | 90185383628daf3550077cebaabf664033b8d80a /drivers/s390/cio/Makefile | |
| parent | s390: ap: kvm: Enable PQAP/AQIC facility for the guest (diff) | |
| download | linux-dev-c382cbc6dbf513d73cf896ad43a3789ad42c2e2f.tar.xz linux-dev-c382cbc6dbf513d73cf896ad43a3789ad42c2e2f.zip | |
vfio-ccw: Fix the conversion of Format-0 CCWs to Format-1
When processing Format-0 CCWs, we use the "len" variable as the
number of CCWs to convert to Format-1. But that variable
contains zero here, and is not a meaningful CCW count until
ccwchain_calc_length() returns. Since that routine requires and
expects Format-1 CCWs to identify the chaining behavior, the
format conversion must be done first.
Convert the 2KB we copied even if it's more than we need.
Fixes: 7f8e89a8f2fd ("vfio-ccw: Factor out the ccw0-to-ccw1 transition")
Reported-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20190702180928.18113-1-farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'drivers/s390/cio/Makefile')
0 files changed, 0 insertions, 0 deletions