linux/drivers/s390/crypto
Harald Freudenberger f822ad2c2c s390/pkey: move pckmo subfunction available checks away from module init
The init of the pkey module currently fails if the pckmo instruction
or the subfunctions are not available.  However, customers may
restrict their LPAR to switch off exactly these functions and work
with secure key only. So it is a valid case to have the pkey module
active and use it for secure key to protected key transfer only.

This patch moves the pckmo subfunction check from the pkey module init
function into the internal function where the pckmo instruction is
called. So now only on invocation of the pckmo instruction the check
for the required subfunction is done. If not available EOPNOTSUPP is
returned to the caller.

The check for having the pckmo instruction available is still done
during module init. This instruction came in with MSA 3 together with
the basic set of kmc instructions needed to work with protected keys.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-10-22 08:37:46 +02:00
..
ap_bus.c s390/zcrypt: add ap_adapter_mask sysfs attribute 2018-10-09 11:21:37 +02:00
ap_bus.h s390/zcrypt: multiple zcrypt device nodes support 2018-10-08 09:09:58 +02:00
ap_card.c s390/zcrypt: code beautify 2018-08-20 16:02:11 +02:00
ap_debug.h s390/zcrypt: Make ap init functions static. 2018-04-10 07:39:01 +02:00
ap_queue.c s390/zcrypt: code beautify 2018-08-20 16:02:11 +02:00
Makefile s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
pkey_api.c s390/pkey: move pckmo subfunction available checks away from module init 2018-10-22 08:37:46 +02:00
zcrypt_api.c s390/zcrypt: fix broken zcrypt_send_cprb in-kernel api function 2018-10-15 12:16:57 +02:00
zcrypt_api.h s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_card.c s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_cca_key.h s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_cex2a.c s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_cex2a.h s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_cex2c.c s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_cex2c.h s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_cex4.c s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_cex4.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zcrypt_debug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
zcrypt_error.h s390/zcrypt: provide apfs failure code on type 86 error reply 2018-10-09 11:21:36 +02:00
zcrypt_msgtype6.c s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_msgtype6.h s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_msgtype50.c s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_msgtype50.h s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00
zcrypt_queue.c s390/zcrypt: zcrypt device driver cleanup 2018-10-09 11:21:35 +02:00