kernel/linux.git - Linux kernel stable tree (mirror)

Age	Commit message (Collapse)	Author	Files	Lines
2023-02-28	s390/rwonce: add READ_ONCE_ALIGNED_128() macro	Heiko Carstens	1	-0/+31
	Add an s390 specific READ_ONCE_ALIGNED_128() helper, which can be used for fast block concurrent (atomic) 128-bit accesses. The used lpq instruction requires 128-bit alignment. This is also the reason why the compiler doesn't emit this instruction if __READ_ONCE() is used for 128-bit accesses. Link: https://lore.kernel.org/r/20230224100237.3247871-2-hca@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com>