On Fri, 22 Feb 2019 19:39:39 +0100 Eric Farman <farman@xxxxxxxxxxxxx> wrote: > Per the discussion [1] about a problem with how vfio-ccw calculates > the length of a channel program (specifically when using the > forthcoming QEMU BIOS code for DASD IPL), I present this fix. > > Patch 1 fixes the problem, and is over-engineered > for readability sake. > > Patch 2 takes the functions from Patch 1, and refactors the > existing code to make other areas a little easier to understand. > (I hope.) > > I've been running fio for over 24 hours now, and have seen > zero hours. Previously, I would have probably seen "a few" > errors by now, where prior to the original fix I would've seen > "many" errors. Further tests are still ongoing. > > [1] https://marc.info/?l=linux-s390&m=155063096321940&w=2 > > Eric Farman (2): > s390/cio: Fix vfio-ccw handling of recursive TICs > s390/cio: Use cpa range elsewhere within vfio-ccw > > drivers/s390/cio/vfio_ccw_cp.c | 55 ++++++++++++++++++++++++++++++++---------- > 1 file changed, 42 insertions(+), 13 deletions(-) > Thanks, applied.
