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s390/pgtable: introduce and use generic csp inline asm

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We have already two inline assemblies which make use of the csp
instruction. Since I need a third instance let's introduce a generic
inline assmebly which can be used by everyone.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2016-05-14 10:46:33 +02:00
committed by Martin Schwidefsky
parent fd346c9dae
commit 4ccccc522b
2 changed files with 18 additions and 19 deletions
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13
arch/s390/include/asm/tlbflush.h
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@@ -5,6 +5,7 @@
#include <linux/sched.h>
#include <asm/processor.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
/*
* Flush all TLB entries on the local CPU.
@@ -44,17 +45,9 @@ void smp_ptlb_all(void);
*/
static inline void __tlb_flush_global(void)
{
register unsigned long reg2 asm("2");
register unsigned long reg3 asm("3");
register unsigned long reg4 asm("4");
long dummy;
unsigned int dummy = 0;
dummy = 0;
reg2 = reg3 = 0;
reg4 = ((unsigned long) &dummy) + 1;
asm volatile(
" csp %0,%2"
: : "d" (reg2), "d" (reg3), "d" (reg4), "m" (dummy) : "cc" );
csp(&dummy, 0, 0);
}
/*