2 Commits

Author	SHA1	Message	Date
Pan Xinhui	ff18143cee	sh: cmpxchg: fix a bit shift bug in big_endian os ... Correct bitoff in big endian OS. Current code works correctly for 1 byte but not for 2 bytes. Fixes: 3226aad81a ("sh: support 1 and 2 byte xchg") Signed-off-by: Pan Xinhui <xinhui.pan@linux.vnet.ibm.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rich Felker <dalias@libc.org>	2016-07-31 03:33:32 +00:00
Michael S. Tsirkin	9e3f84ce41	sh: move xchg_cmpxchg to a header by itself ... Looks like future sh variants will support a 4-byte cas which will be used to implement 1 and 2 byte xchg. This is exactly what we do for llsc now, move the portable part of the code into a separate header so it's easy to reuse. Suggested-by: Rich Felker <dalias@libc.org> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>	2016-01-12 20:47:02 +02:00