Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2024-12-29 17:22:07 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

s390/extmem: Convert to use flag output macros

Browse Source 
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 16:11:46 +01:00
parent 0caf91f6d6
commit 0b7265ae16
1 changed files with 8 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/s390/mm/extmem.c
View File

@ -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