__cmpxchg_user_key() uses 128 bit types which, depending on compiler
and config options, may lead to an __ashlti3() library call.
Get rid of that by simply casting the 128 bit values to 32 bit values.
Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Fixes:
51098f0eb22e ("s390/cmpxchg: make loop condition for 1,2 byte cases precise")
Link: https://lore.kernel.org/all/4b96b112d5415d08a81d30657feec2c8c3000f7c.camel@linux.ibm.com/
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
shift = (3 ^ (address & 3)) << 3;
address ^= address & 3;
- _old = (old & 0xff) << shift;
- _new = (new & 0xff) << shift;
+ _old = ((unsigned int)old & 0xff) << shift;
+ _new = ((unsigned int)new & 0xff) << shift;
mask = ~(0xff << shift);
asm volatile(
" spka 0(%[key])\n"
shift = (2 ^ (address & 2)) << 3;
address ^= address & 2;
- _old = (old & 0xffff) << shift;
- _new = (new & 0xffff) << shift;
+ _old = ((unsigned int)old & 0xffff) << shift;
+ _new = ((unsigned int)new & 0xffff) << shift;
mask = ~(0xffff << shift);
asm volatile(
" spka 0(%[key])\n"