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| author | Vasily Gorbik <gor@linux.ibm.com> | 2019-02-27 16:26:22 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-03-01 08:00:37 +0100 |
| commit | 96d3b64b527f6dc8799ebf00a95e931554311daf (patch) | |
| tree | 2aa03d22d9948add30b63b31cc50490d2e2fceb6 /arch | |
| parent | 7b660c225fa021b254be69aafb5787e79ec58af0 (diff) | |
| download | linux-stable-96d3b64b527f6dc8799ebf00a95e931554311daf.tar.gz linux-stable-96d3b64b527f6dc8799ebf00a95e931554311daf.tar.bz2 linux-stable-96d3b64b527f6dc8799ebf00a95e931554311daf.zip | |
s390/als: remove duplicated in-place implementation of stfle
Reuse __stfle call instead of in-place implementation. __stfle is using
memcpy and memset functions but they are safe to use, since mem.S is
built with -march=z900.
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/boot/als.c | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/arch/s390/boot/als.c b/arch/s390/boot/als.c index d592e0d90d9f..322e386bd9d0 100644 --- a/arch/s390/boot/als.c +++ b/arch/s390/boot/als.c @@ -105,20 +105,7 @@ void verify_facilities(void) { int i; - for (i = 0; i < ARRAY_SIZE(S390_lowcore.stfle_fac_list); i++) - S390_lowcore.stfle_fac_list[i] = 0; - asm volatile( - " stfl 0(0)\n" - : "=m" (S390_lowcore.stfl_fac_list)); - S390_lowcore.stfle_fac_list[0] = (u64)S390_lowcore.stfl_fac_list << 32; - if (S390_lowcore.stfl_fac_list & 0x01000000) { - register unsigned long reg0 asm("0") = ARRAY_SIZE(als) - 1; - - asm volatile(".insn s,0xb2b00000,0(%1)" /* stfle */ - : "+d" (reg0) - : "a" (&S390_lowcore.stfle_fac_list) - : "memory", "cc"); - } + __stfle(S390_lowcore.stfle_fac_list, ARRAY_SIZE(S390_lowcore.stfle_fac_list)); for (i = 0; i < ARRAY_SIZE(als); i++) { if ((S390_lowcore.stfle_fac_list[i] & als[i]) != als[i]) facility_mismatch(); |