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| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-11-24 12:18:22 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-12-18 14:59:18 +0100 |
| commit | 9552a66fe622ed53b87278a90917a37a5245e68a (patch) | |
| tree | 24d6a0db798e352dfc8fafc90e07490af5d2db9c /arch/s390 | |
| parent | s390/spinlock: do not yield to a CPU in udelay/mdelay (diff) | |
| download | linux-dev-9552a66fe622ed53b87278a90917a37a5245e68a.tar.xz linux-dev-9552a66fe622ed53b87278a90917a37a5245e68a.zip | |
s390/facilities: use stfl mnemonic instead of insn magic
Now that 31 bit support is gone, the assembler always knows about the
stfl instruction. Therefore lets use a readable mnemonic. Also remove
the not needed extable entry for the inline assembly and fix the
output constraint.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/facility.h | 6 | ||||
| -rw-r--r-- | arch/s390/kernel/head.S | 2 |
2 files changed, 3 insertions, 5 deletions
diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h index 0aa6a7ed95a3..b4f99d22ba04 100644 --- a/arch/s390/include/asm/facility.h +++ b/arch/s390/include/asm/facility.h @@ -44,10 +44,8 @@ static inline void stfle(u64 *stfle_fac_list, int size) preempt_disable(); asm volatile( - " .insn s,0xb2b10000,0(0)\n" /* stfl */ - "0:\n" - EX_TABLE(0b, 0b) - : "+m" (S390_lowcore.stfl_fac_list)); + " stfl 0(0)\n" + : "=m" (S390_lowcore.stfl_fac_list)); nr = 4; /* bytes stored by stfl */ memcpy(stfle_fac_list, &S390_lowcore.stfl_fac_list, 4); if (S390_lowcore.stfl_fac_list & 0x01000000) { diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 301ee9c70688..d893d5aeb307 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -306,7 +306,7 @@ ENTRY(startup_kdump) mvc __LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13) xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST # check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10} - .insn s,0xb2b10000,0 # store facilities @ __LC_STFL_FAC_LIST + stfl 0(%r0) # store facilities @ __LC_STFL_FAC_LIST tm __LC_STFL_FAC_LIST,0x01 # stfle available ? jz 0f la %r0,1 |