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s390/diag: use register pair instead of register asm 

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2021-06-09 22:59:13 +02:00 committed by Vasily Gorbik
parent 75c89a2bc6
commit 3c45a07bee
1 changed files with 5 additions and 6 deletions
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11
arch/s390/kernel/diag.c
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@ -141,16 +141,15 @@ EXPORT_SYMBOL(diag14);
static inline int __diag204(unsigned long *subcode, unsigned long size, void *addr)
{
register unsigned long _subcode asm("0") = *subcode;
register unsigned long _size asm("1") = size;
union register_pair rp = { .even = *subcode, .odd = size };
asm volatile(
" diag %2,%0,0x204\n"
" diag %[addr],%[rp],0x204\n"
"0: nopr %%r7\n"
EX_TABLE(0b,0b)
: "+d" (_subcode), "+d" (_size) : "d" (addr) : "memory");
*subcode = _subcode;
return _size;
: [rp] "+&d" (rp.pair) : [addr] "d" (addr) : "memory");
*subcode = rp.even;
return rp.odd;
}
int diag204(unsigned long subcode, unsigned long size, void *addr)