Requirements
------------
- You need GCC 3.4 or later to compile the s390 port.
-- A working combination of autotools is required.
- To run valgrind a z10 machine or any later model is needed.
Older machine models down to and including z900 may work but have
not been tested extensively.
architecture. Otherwise, cachegrind will query the hosts cache system
and use those parameters.
- callgrind and all experimental tools are currently not supported.
-- Some gcc versions use mvc to copy 4/8 byte values. This will affect some
- debug messages. Valgrind will complain about 4 or 8 one-byte reads/writes
- instead of just 1 read/write.
+- Some gcc versions use mvc to copy 4/8 byte values. This will affect
+ certain debug messages. For example, memcheck will complain about
+ 4 one-byte reads/writes instead of just a single read/write.
Hardware facilities