From 6ed54387dc470fc439cb154724a1ac81d251c126 Mon Sep 17 00:00:00 2001 From: Jan Glauber Date: Mon, 14 Nov 2011 11:19:07 +0100 Subject: [PATCH] [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 Signed-off-by: Martin Schwidefsky --- arch/s390/crypto/crypt_s390.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) 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 @@ static inline int crypt_s390_func_available(int func, 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) { -- 2.7.4