On Mon, May 21, 2018 at 11:04:10AM +0200, Jan Kara wrote:
We definitely do have customers using "execute in place" on
dcssblk. I've got about two bug reports for it when customers were updating
from old kernels using original XIP to kernels using DAX. So we need to
keep that working.
That is all good an fine, but I think time has come where s390 needs
to migrate to provide the pmem API so that we can get rid of these
special cases. Especially given that the old XIP/legacy DAX has all
kinds of known bugs at this point in time.