From: Andi Kleen <ak@muc.de>
To: Kasper Sandberg <lkml@metanurb.dk>
Cc: Linus Torvalds <torvalds@osdl.org>,
James Morris <jmorris@redhat.com>,
LKML Mailinglist <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Re-implemented i586 asm AES (updated)
Date: 7 Aug 2004 22:26:30 +0200
Date: Sat, 7 Aug 2004 22:26:30 +0200 [thread overview]
Message-ID: <20040807202630.GB16382@muc.de> (raw)
In-Reply-To: <1091864985.9992.0.camel@localhost>
On Sat, Aug 07, 2004 at 09:49:45AM +0200, Kasper Sandberg wrote:
> i dont know anything at all about this, but wouldnt it be possible to
> optimize it even more, if there were a version for each cpu, like one
> for athlon-xp and one for p4?
I also haven't looked at the code (It seems except for Linus/James
everybody posting to this thread is clueless about the actual code -
is that a good sign or a bad one? ;-).
But if someone wanted to write such optimized versions .altinstructions
would make it easy to switch to the right version at runtime. There
is no bit for Athlon-XP right now, but for AMD K8 B/C and for P3/P4.
A bit for XP could be relatively easily added. You can also test
for SSE2, MMX etc. which may be more generic.
-Andi
next prev parent reply other threads:[~2004-08-07 20:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <2qbyt-1Op-45@gated-at.bofh.it>
[not found] ` <2qemF-3Pj-49@gated-at.bofh.it>
2004-08-06 15:09 ` [PATCH] Re-implemented i586 asm AES (updated) Andi Kleen
2004-08-06 16:17 ` James Morris
2004-08-06 16:38 ` David Woodhouse
2004-08-06 16:44 ` Jörn Engel
2004-08-06 16:43 ` Linus Torvalds
2004-08-06 17:17 ` Ben Pfaff
2004-08-07 7:49 ` Kasper Sandberg
2004-08-07 20:26 ` Andi Kleen [this message]
2004-08-09 19:38 ` dean gaudet
2004-08-06 12:00 [PATCH] Re-implemented i586 asm AES Marc Ballarin
2004-08-06 14:52 ` [PATCH] Re-implemented i586 asm AES (updated) James Morris
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