[S390] crypto: avoid MSA3 and MSA4 instructions in ESA mode
MSA3 and MSA4 instructions are only available under CONFIG_64BIT.
Bail out before using any of these instructions if the kernel is
running in 31 bit mode.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index 4967677..ffd1ac2 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -368,9 +368,12 @@
if (facility_mask & CRYPT_S390_MSA && !test_facility(17))
return 0;
- if (facility_mask & CRYPT_S390_MSA3 && !test_facility(76))
+
+ if (facility_mask & CRYPT_S390_MSA3 &&
+ (!test_facility(2) || !test_facility(76)))
return 0;
- if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77))
+ if (facility_mask & CRYPT_S390_MSA4 &&
+ (!test_facility(2) || !test_facility(77)))
return 0;
switch (func & CRYPT_S390_OP_MASK) {