> kmem = kernel memory. That may not be the same as the physical
> memory (the fact that it is at present I find mostly irrelevant here).
> /dev/mem is the more correct device to use for this purpose.
/dev/mem is also not strictly correct. Linux in/out space is operated as
synchronous I/O operations. A dumb map of /dev/mem areas can lead to
differences if the platform concerned has to do the I/O post and wait
completion handling in software. (O_SYNC is also not enough since thats
memory caching not PCI posting)
Alan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu May 23 2002 - 22:00:25 EST