From: Manfred Spraul <manfred@colorfullife.com>
To: Andi Kleen <ak@suse.de>
Cc: linux-kernel@vger.kernel.org, "R. J. Wysocki" <rjwysocki@sisk.pl>
Subject: Re: Opteron bug
Date: Sun, 20 Jun 2004 15:07:59 +0200 [thread overview]
Message-ID: <40D58C2F.3010508@colorfullife.com> (raw)
Andi wrote:
>The kernel never uses backwards REP prefixes.
>
>
Huh? memmove uses backwards rep movsb on x86-64, at least in 2.6.5:
http://lxr.linux.no/source/arch/x86_64/lib/memmove.c?v=2.6.5;a=x86_64#L8
i386 is similar:
http://lxr.linux.no/source/include/asm-i386/string.h?v=2.6.5#L297
But the bug appears to be so rare that it shouldn't matter - lets wait
for the microcode update. Btw, is there a runtime microcode updater for
Opteron cpus, similar to the Intel microcode driver?
--
Manfred
next reply other threads:[~2004-06-20 13:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-20 13:07 Manfred Spraul [this message]
2004-06-20 21:49 ` Opteron bug Andi Kleen
-- strict thread matches above, loose matches on Subject: below --
2004-06-19 20:29 R. J. Wysocki
2004-06-20 13:22 ` Andi Kleen
2004-06-20 11:47 ` R. J. Wysocki
2004-06-20 12:02 ` Jakub Jelinek
[not found] ` <200406210254.53124.vda@port.imtp.ilyichevsk.odessa.ua>
2004-06-21 5:29 ` Jakub Jelinek
2004-06-20 13:49 ` Andi Kleen
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