s390/crypto: Display Query and Query Authentication Information in sysfs

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Displays the query (fc=0) and query authentication information (fc=127)
as binary in sysfs per CPACF instruction. Files are located in
/sys/devices/system/cpu/cpacf/. These information can be fetched via
asm already except for PCKMO because this instruction is privileged. To
offer a unified interface all CPACF instructions will have this
information displayed in sysfs in files <instruction>_query_raw and
<instruction>_query_auth_info_raw.

A new tool introduced into s390-tools called cpacfinfo will use this
information to convert and display in human readable form.

Suggested-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Finn Callies <fcallies@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Finn Callies 2024-09-11 09:21:09 +02:00 • committed by Vasily Gorbik

parent 9bbd1bfb86

commit 9fed8d7c46

2 changed files with 120 additions and 0 deletions

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1

arch/s390/kernel/Makefile

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119

arch/s390/kernel/cpacf.c

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