Comment 0 for bug 1954680

Toleration support for new IBM Z crypto hardware - Backport to focal (20.04)

Patch from kernel 5.14:

Summary: kernel: support new dynamic AP bus size limit
Description: This patch provides support for new dynamic AP bus
             message limit with the existing zcrypt device driver
             and AP bus core code. There is support for a new
             field 'ml' from the TAPQ query which indicates the
             per card AP bus message size limit. This TAPQ
             improvement will come with an updated firmware and
             this patch exploits this new field and thus makes
             it possible to send/receive AP messages greater
             than the current limit of 12K.
Upstream-ID: bd39654a2282c1a51c044575a6bc00d641d5dfd1