From: Mikael Pettersson <mikpe@csd.uu.se>
To: marcelo@conectiva.com.br
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux 2.4.19-pre3
Date: Tue, 12 Mar 2002 01:51:42 +0100 (MET) [thread overview]
Message-ID: <200203120051.BAA20236@harpo.it.uu.se> (raw)
Marcelo wrote in the 2.4.19-pre3 announcement:
>pre3:
>- Fix off-by-one error in bluesmoke (Dave Jones)
NO NO NO! This is the same broken patch that somehow got into
2.2.21pre4 as well. The patch changes the code to write to the
IA32_MC0_CTL MSR, which is a big no-no. Intel's IA32 Vol3 manual
(#245472-03) sections 13.3.2.1 and 13.5 make that point quite clear.
I have several P6 boxes that hang hard in MCE init trying to boot
vanilla 2.2.21pre4 and 2.4.19-pre3. The issue is real.
Please apply the backup patch below.
/Mikael
--- linux-2.4.19-pre3/arch/i386/kernel/bluesmoke.c.~1~ Tue Mar 12 00:25:53 2002
+++ linux-2.4.19-pre3/arch/i386/kernel/bluesmoke.c Tue Mar 12 01:11:58 2002
@@ -169,7 +169,7 @@
if(l&(1<<8))
wrmsr(MSR_IA32_MCG_CTL, 0xffffffff, 0xffffffff);
banks = l&0xff;
- for(i=0;i<banks;i++)
+ for(i=1;i<banks;i++)
{
wrmsr(MSR_IA32_MC0_CTL+4*i, 0xffffffff, 0xffffffff);
}
next reply other threads:[~2002-03-12 0:52 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-12 0:51 Mikael Pettersson [this message]
2002-03-12 5:13 ` Linux 2.4.19-pre3 skidley
2002-03-12 21:00 ` Dave Jones
[not found] <fa.npg7nmv.si46bq@ifi.uio.no>
2002-03-12 7:26 ` junkio
-- strict thread matches above, loose matches on Subject: below --
2002-03-11 21:08 Marcelo Tosatti
2002-03-11 22:40 ` Eyal Lebedinsky
2002-03-11 23:03 ` Alan Cox
2002-03-11 22:55 ` Stephan von Krawczynski
2002-03-12 1:50 ` Mike Fedyk
2002-03-12 11:06 ` Stephan von Krawczynski
2002-03-11 23:04 ` Eyal Lebedinsky
2002-03-11 23:14 ` Keith Owens
2002-03-12 15:49 ` DevilKin
2002-03-11 23:21 ` Eyal Lebedinsky
2002-03-12 1:40 ` Takeo Saito
2002-03-12 0:04 ` J.A. Magallon
2002-03-12 0:37 ` Ken Brownfield
2002-03-12 10:35 ` Gerd Knorr
2002-03-12 17:24 ` Trond Myklebust
2002-03-12 17:47 ` Gerd Knorr
2002-03-12 13:01 ` Karsten Weiss
2002-03-12 13:17 ` Jens Axboe
2002-03-12 13:37 ` Alan Cox
2002-03-12 13:46 ` Jens Axboe
2002-03-12 19:02 ` Marcelo Tosatti
2002-03-13 8:09 ` Jens Axboe
2002-03-13 9:00 ` Andre Hedrick
2002-03-13 9:27 ` Jens Axboe
2002-03-13 9:33 ` Andre Hedrick
2002-03-13 17:32 ` Andre Hedrick
2002-03-13 17:40 ` Jens Axboe
2002-03-13 18:52 ` Andre Hedrick
2002-03-14 4:41 ` Marcelo Tosatti
2002-03-14 6:28 ` Andre Hedrick
2002-03-14 3:32 ` Michal Jaegermann
2002-03-12 14:47 ` J.A. Magallon
2002-03-12 13:31 ` Jurgen Philippaerts
2002-03-12 15:43 ` Geert Uytterhoeven
2002-03-12 21:59 ` Paul Mackerras
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