Harald Freudenberger 8fcc231ce3 s390/pkey: Introduce pkey base with handler registry and handler modules ... Introduce pkey base kernel code with a simple pkey handler registry. Regroup the pkey code into these kernel modules: - pkey is the pkey api supporting the ioctls, sysfs and in-kernel api. Also the pkey base code which offers the handler registry and handler wrapping invocation functions is integrated there. This module is automatically loaded in via CPU feature if the MSA feature is available. - pkey-cca is the CCA related handler code kernel module a offering CCA specific implementation for pkey. This module is loaded in via MODULE_DEVICE_TABLE when a CEX[4-8] card becomes available. - pkey-ep11 is the EP11 related handler code kernel module offering an EP11 specific implementation for pkey. This module is loaded in via MODULE_DEVICE_TABLE when a CEX[4-8] card becomes available. - pkey-pckmo is the PCKMO related handler code kernel module. This module is loaded in via CPU feature if the MSA feature is available, but on init a check for availability of the pckmo instruction is performed. The handler modules register via a pkey_handler struct at the pkey base code and the pkey customer (that is currently the pkey api code fetches a handler via pkey handler registry functions and calls the unified handler functions via the pkey base handler functions. As a result the pkey-cca, pkey-ep11 and pkey-pckmo modules get independent from each other and it becomes possible to write new handlers which offer another kind of implementation without implicit dependencies to other handler implementations and/or kernel device drivers. For each of these 4 kernel modules there is an individual Kconfig entry: CONFIG_PKEY for the base and api, CONFIG_PKEY_CCA for the PKEY CCA support handler, CONFIG_PKEY_EP11 for the EP11 support handler and CONFIG_PKEY_PCKMO for the pckmo support. The both CEX related handler modules (PKEY CCA and PKEY EP11) have a dependency to the zcrypt api of the zcrypt device driver. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>		2024-08-29 22:56:34 +02:00
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btf.config	kbuild: Show marked Kconfig fragments in "help"	2023-09-04 02:04:20 +09:00
compat.config	s390/configs: provide compat topic configuration target	2024-02-09 13:57:29 +01:00
debug_defconfig	s390/pkey: Introduce pkey base with handler registry and handler modules	2024-08-29 22:56:34 +02:00
defconfig	s390/pkey: Introduce pkey base with handler registry and handler modules	2024-08-29 22:56:34 +02:00
kasan.config	kbuild: Show marked Kconfig fragments in "help"	2023-09-04 02:04:20 +09:00
zfcpdump_defconfig	s390: Update defconfigs	2024-06-11 16:20:40 +02:00