Re: NS83820 2.6.0-test5 driver seems unstable on IA64

[David S. Miller]

On Fri, 26 Sep 2003 10:47:12 -0700
David Mosberger <davidm@xxxxxxxxxxxxxxxxx> wrote:

> Arches that don't like/support unaligned accesses will certainly
> have a copy_user() which handles misalignment just fine.  For
> example, on ia64, the copy will run slightly slower because of an
> additional shift in the loop, but that penalty only shows on fully
> cached data.

Exactly correct, and on many platforms (sparc64 happens to be one)
there is _ZERO_ performance penalty for misalignment or source or
destination buffer during a memcpy/memmove.
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