s390/zcrypt: add ap_adapter_mask sysfs attribute
This patch provides a new sysfs attribute file /sys/bus/ap/ap_adapter_mask. This read-only attribute refrects the apm field as it is found in the PQAP(QCI) crypto info. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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