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authorHarald Freudenberger <freude@linux.ibm.com>2020-09-23 10:18:38 +0300
committerVasily Gorbik <gor@linux.ibm.com>2020-10-07 22:49:59 +0300
commit0ae88ccf4c160e02316e054db67156230568cf49 (patch)
treefde73855fd1418b1f9d3459f58f1463f665d2d31 /drivers/crypto
parent91ffc519c1997520ff3435ee227d86cfaa30d037 (diff)
downloadlinux-0ae88ccf4c160e02316e054db67156230568cf49.tar.xz
s390/zcrypt: New config switch CONFIG_ZCRYPT_DEBUG
Introduce a new config switch CONFIG_ZCRYPT_DEBUG which will be used to enable some features for debugging the zcrypt device driver and ap bus system: Another patch will use this for displaying ap card and ap queue state information via sysfs attribute. A furher patch will use this to enable some special treatment for some fields of an crypto request to be able to inject failures and so help debugging with regards to handling of failures. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/Kconfig24
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index aa3a4ed07a66..895a6d5f8b53 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -71,10 +71,26 @@ config ZCRYPT
help
Select this option if you want to enable support for
s390 cryptographic adapters like:
- + PCI-X Cryptographic Coprocessor (PCIXCC)
- + Crypto Express 2,3,4 or 5 Coprocessor (CEXxC)
- + Crypto Express 2,3,4 or 5 Accelerator (CEXxA)
- + Crypto Express 4 or 5 EP11 Coprocessor (CEXxP)
+ + Crypto Express 2 up to 7 Coprocessor (CEXxC)
+ + Crypto Express 2 up to 7 Accelerator (CEXxA)
+ + Crypto Express 4 up to 7 EP11 Coprocessor (CEXxP)
+
+config ZCRYPT_DEBUG
+ bool "Enable debug features for s390 cryptographic adapters"
+ default n
+ depends on DEBUG_KERNEL
+ depends on ZCRYPT
+ help
+ Say 'Y' here to enable some additional debug features on the
+ s390 cryptographic adapters driver.
+
+ There will be some more sysfs attributes displayed for ap cards
+ and queues and some flags on crypto requests are interpreted as
+ debugging messages to force error injection.
+
+ Do not enable on production level kernel build.
+
+ If unsure, say N.
config ZCRYPT_MULTIDEVNODES
bool "Support for multiple zcrypt device nodes"