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s390/mm: Convert to use flag output macros

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Use flag output macros in inline asm to allow for better code generation if
the compiler has support for the flag output constraint.

Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2024-11-07 16:11:39 +01:00
parent fbe057e874
commit 9ce8bc0cb4
1 changed files with 7 additions and 5 deletions
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12
arch/s390/include/asm/page.h
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@ -10,6 +10,7 @@
#include <linux/const.h>
#include <asm/types.h>
#include <asm/asm.h>
#define _PAGE_SHIFT CONFIG_PAGE_SHIFT
#define _PAGE_SIZE (_AC(1, UL) << _PAGE_SHIFT)
@ -148,11 +149,12 @@ static inline int page_reset_referenced(unsigned long addr)
int cc;
asm volatile(
" rrbe 0,%1\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc) : "a" (addr) : "cc");
return cc;
" rrbe 0,%[addr]\n"
CC_IPM(cc)
: CC_OUT(cc, cc)
: [addr] "a" (addr)
: CC_CLOBBER);
return CC_TRANSFORM(cc);
}
/* Bits int the storage key */