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s390/pageattr: 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 16:11:34 +01:00
parent eade39cc72
commit 34c4812366
1 changed files with 5 additions and 4 deletions
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9
arch/s390/mm/pageattr.c
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@@ -12,6 +12,7 @@
#include <asm/pgalloc.h>
#include <asm/kfence.h>
#include <asm/page.h>
#include <asm/asm.h>
#include <asm/set_memory.h>
static inline unsigned long sske_frame(unsigned long addr, unsigned char skey)
@@ -414,11 +415,11 @@ bool kernel_page_present(struct page *page)
addr = (unsigned long)page_address(page);
asm volatile(
" lra %[addr],0(%[addr])\n"
" ipm %[cc]\n"
: [cc] "=d" (cc), [addr] "+a" (addr)
CC_IPM(cc)
: CC_OUT(cc, cc), [addr] "+a" (addr)
:
: "cc");
return (cc >> 28) == 0;
: CC_CLOBBER);
return CC_TRANSFORM(cc) == 0;
}
#if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_KFENCE)