Commit 0b7265ae authored by Heiko Carstens's avatar Heiko Carstens
Browse files

s390/extmem: Convert to use flag output macros 



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: default avatarJuergen Christ <jchrist@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 0caf91f6

arch/s390/mm/extmem.c

+8 −6
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <asm/extmem.h>

#include <asm/cpcmd.h>

#include <asm/setup.h>

#include <asm/asm.h>



#define DCSS_PURGESEG   0x08

#define DCSS_LOADSHRX	0x20
@@ -134,20 +135,21 @@ dcss_diag(int *func, void *parameter, 
           unsigned long *ret1, unsigned long *ret2)

{

	unsigned long rx, ry;

	int rc;

	int cc;



	rx = virt_to_phys(parameter);

	ry = (unsigned long) *func;



	diag_stat_inc(DIAG_STAT_X064);

	asm volatile(

		"	diag	%0,%1,0x64\n"

		"	ipm	%2\n"

		"	srl	%2,28\n"

		: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc");

		"	diag	%[rx],%[ry],0x64\n"

		CC_IPM(cc)

		: CC_OUT(cc, cc), [rx] "+d" (rx), [ry] "+d" (ry)

		:

		: CC_CLOBBER);

	*ret1 = rx;

	*ret2 = ry;

	return rc;

	return CC_TRANSFORM(cc);

}



static inline int