Re: NS83820 2.6.0-test5 driver seems unstable on IA64

David S. Miller
2003-09-27T23:50:22Z

On Sat, 27 Sep 2003 06:26:40 +0200
Andi Kleen <ak@muc.de> wrote:

> You handle misalignment->misalignment copies with zero or small cost -
> when both source and destination have the same misalignment. I guess
> you do that by just aligning the pointer at the beginning of the
> function. That works as long as both source and destination have
> the same misalignment.

Nope, different alignments are fully optimized as well.

Sparc64 VIS has special instructions so that you can handle
all of these different src/dst alignment cases and still use
the 64-byte-at-a-time cache bypassing loads and stores.