Robert Hancock <[EMAIL PROTECTED]> writes: > > Also, x86 doesn't prohibit unaligned accesses,
That depends, e.g. for SSE2 they can be forbidden. > but I believe they have > a significant performance cost and are best avoided where possible. On Opteron the typical cost of a misaligned access is a single cycle and some possible penalty to load-store forwarding. On Intel it is a bit worse, but not all that much. Unless you do a lot of accesses of it in a loop it's not really worth something caring about too much. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
