From: Andi Kleen <ak@muc.de>
To: James Morris <jmorris@redhat.com>
Cc: linux-kernel@vger.kernel.org, torvalds@osdl.org
Subject: Re: [PATCH] Re-implemented i586 asm AES (updated)
Date: Fri, 06 Aug 2004 17:09:17 +0200 [thread overview]
Message-ID: <m3wu0cgv6q.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <2qemF-3Pj-49@gated-at.bofh.it> (James Morris's message of "Fri, 06 Aug 2004 17:00:21 +0200")
James Morris <jmorris@redhat.com> writes:
>
>> Does it work on x86 CPUs without MMX?
>
> Yes, Linus removed the MMX stuff.
You could use .altinstructions to patch a jump in at runtime
based on CPU capabilities. Assuming MMX is really faster of course.
See arch/x86_64/lib/copy_page.S for an example.
-Andi
next parent reply other threads:[~2004-08-06 15:09 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 ` Andi Kleen [this message]
2004-08-06 16:17 ` [PATCH] Re-implemented i586 asm AES (updated) 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
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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