Remove the explicit prefetch check when using vfio-ccw devices. This check is not needed in practice as all Linux channel programs are intended to use prefetch. Version 2 improves logging by issuing a warning if a non-prefetch ORB is encountered. A kernel warning is printed when an ORB without the p-bit set is initialized. The warning is limited to once per five seconds because, if encountered, non-prefetch ORBs tend to appear in bursts of hundreds per second. The commit message is expanded to highlight the potential for future risk if non-prefetch dependent channel programs become prevalent. Furthermore, a note of prefetch only support is added to the limitations section of the vfio-ccw.rst. Jared Rossi (1): vfio-ccw: Enable transparent CCW IPL from DASD Documentation/s390/vfio-ccw.rst | 4 ++++ drivers/s390/cio/vfio_ccw_cp.c | 16 +++++++--------- 2 files changed, 11 insertions(+), 9 deletions(-) -- 2.17.0
