• Martin Schwidefsky's avatar
    s390/crypto: simplify return code handling · 0177db01
    Martin Schwidefsky authored
    The CPACF instructions can complete with three different condition codes:
    CC=0 for successful completion, CC=1 if the protected key verification
    failed, and CC=3 for partial completion.
    
    The inline functions will restart the CPACF instruction for partial
    completion, this removes the CC=3 case. The CC=1 case is only relevant
    for the protected key functions of the KM, KMC, KMAC and KMCTR
    instructions. As the protected key functions are not used by the
    current code, there is no need for any kind of return code handling.
    Reviewed-by: default avatarHarald Freudenberger <freude@linux.vnet.ibm.com>
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    0177db01
ghash_s390.c 3.15 KB