On Fri, 2002-10-04 at 14:00, Kevin D. Kissell wrote: > The issue isn't that anyone would deliberately use memcpy() in I/O > space. Rather, it's that memcpy() prefetches quite a ways ahead, > and if one has I/O space assigned just after the end of physical > memory, Bad Things might happen on a perfectly legal memcpy() > that references the last couple hundred bytes of memory in a > way that not even a clever and well-informed bus error handler > could undo. Then your memcpy function is IMHO broken. Fix it to note prefetch beyond the end of the area you actually will copy and life should be a lot better
