Hi Herbert,
here is a small patch for the s390 crypto detection.
[PATCH] respect STFL bit for s390 crypto
From: <jang@xxxxxxxxxxxxxxxxxx>
For all s390 in-kernel crypto algorithms we check at module
load time whether the CPACF facility bit is on. If the facility
is not enabled we bail out.
Signed-off-by: <jang@xxxxxxxxxxxxxxxxxx>
--- ./arch/s390/crypto/crypt_s390.h.stfle
+++ ./arch/s390/crypto/crypt_s390.h
@@ -294,6 +294,10 @@ static inline int crypt_s390_func_availa
unsigned char status[16];
int ret;
+ /* check if CPACF facility (bit 17) is available */
+ if (!(stfl() & 1ULL << (31 - 17)))
+ return 0;
+
switch (func & CRYPT_S390_OP_MASK) {
case CRYPT_S390_KM:
ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);
--
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