id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13130	BOOST_LOCKFREE_CACHELINE_BYTES value is incorrect on s390x	mike.munday@…	timblechmann	"The file include/boost/lockfree/detail/prefix.hpp contains the following code snippet:

{{{
// PowerPC caches support 128-byte cache lines.
#if defined(powerpc) || defined(__powerpc__) || defined(__ppc__)
    #define BOOST_LOCKFREE_CACHELINE_BYTES 128
#else
    #define BOOST_LOCKFREE_CACHELINE_BYTES 64
#endif
}}}

This sets the cache line size on s390x to 64 bytes. This is incorrect, the correct size is 256 bytes. To fix we just need to add an extra #elif checking for the __s390__/ __s390x__ compiler-defined macros."	Bugs	new	To Be Determined	lockfree	Boost 1.63.0	Optimization