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s390: get rid of __set_psw_mask()

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With the removal of 31 bit code we can always assume that the epsw
instruction is available. Therefore use the __extract_psw() function
to disable and enable machine checks.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2015-10-12 11:54:03 +02:00 committed by Martin Schwidefsky
parent b0753902d4
commit ecbafda853
1 changed files with 11 additions and 16 deletions
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25
arch/s390/include/asm/processor.h
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@ -250,6 +250,16 @@ static inline unsigned long __extract_psw(void)
return (((unsigned long) reg1) << 32) | ((unsigned long) reg2); return (((unsigned long) reg1) << 32) | ((unsigned long) reg2);
} }
static inline void local_mcck_enable(void)
{
__load_psw_mask(__extract_psw() | PSW_MASK_MCHECK);
}
static inline void local_mcck_disable(void)
{
__load_psw_mask(__extract_psw() & ~PSW_MASK_MCHECK);
}
/* /*
* Rewind PSW instruction address by specified number of bytes. * Rewind PSW instruction address by specified number of bytes.
*/ */
@ -317,21 +327,6 @@ static inline void __noreturn disabled_wait(unsigned long code)
while (1); while (1);
} }
/*
* Use to set psw mask except for the first byte which
* won't be changed by this function.
*/
static inline void
__set_psw_mask(unsigned long mask)
{
__load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8)));
}
#define local_mcck_enable() \
__set_psw_mask(PSW_KERNEL_BITS | PSW_MASK_DAT | PSW_MASK_MCHECK)
#define local_mcck_disable() \
__set_psw_mask(PSW_KERNEL_BITS | PSW_MASK_DAT)
/* /*
* Basic Machine Check/Program Check Handler. * Basic Machine Check/Program Check Handler.
*/ */