From: Andi Kleen <andi@firstfloor.org>
To: Tony Luck <tony.luck@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Nils Carlson <nils.carlson@ludd.ltu.se>,
Ingo Molnar <mingo@elte.hu>, Borislav Petkov <bp@amd64.org>,
Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
Mauro Carvalho Chehab <mchehab@redhat.com>,
"Young, Brent" <brent.young@intel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"bluesmoke-devel@lists.sourceforge.net"
<bluesmoke-devel@lists.sourceforge.net>,
Doug Thompson <dougthompson@xmission.com>,
Joe Perches <joe@perches.com>,
Thomas Gleixner <tglx@linutronix.de>,
Linux Edac Mailing List <linux-edac@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Matt Domsch <Matt_Domsch@dell.com>
Subject: Re: Hardware Error Kernel Mini-Summit
Date: Tue, 15 Jun 2010 08:44:19 +0200 [thread overview]
Message-ID: <20100615064419.GA6727@basil.fritz.box> (raw)
In-Reply-To: <AANLkTil_mDFOsDUjvnp_NFZvkj0Ij-qww6BqewJ4lpHP@mail.gmail.com>
> There was a case mentioned at the collaboration summit
> meeting where a BIOS bug mis-reported whether ECC was
> enabled - claiming it was on, when in fact it was off.
Yes I heard about that, but since it's not a single bit setting
there are lots of different ways it could be broken in theory.
To check it you really need to have a tool that knows about
all the registers and checks them all.
It's a bit like checking if someone speaks a foreign language
by asking them a single question with a one letter answer.
> of the chipset specific code against each other. An EDAC
> driver that tells you that ECC is enabled might be lying too,
> if it is looking at the wrong bit or the wrong register.
Yep.
It's asking a question with a one word answer where you don't
know the correct answer.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2010-06-15 6:44 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-17 18:23 Hardware Error Kernel Mini-Summit Mauro Carvalho Chehab
2010-05-17 22:41 ` Andi Kleen
2010-05-18 16:50 ` Mauro Carvalho Chehab
2010-05-18 18:10 ` Andi Kleen
2010-05-18 6:52 ` Hidetoshi Seto
2010-05-18 16:44 ` Mauro Carvalho Chehab
2010-05-18 17:42 ` Joe Perches
2010-05-18 17:59 ` Mauro Carvalho Chehab
2010-05-18 18:45 ` Andi Kleen
2010-05-18 18:57 ` Joe Perches
2010-05-18 18:53 ` Ingo Molnar
2010-05-18 19:08 ` Luck, Tony
2010-05-18 19:18 ` Borislav Petkov
2010-05-18 19:34 ` Ingo Molnar
2010-05-18 22:14 ` Eric W. Biederman
2010-05-18 22:28 ` Andi Kleen
2010-05-19 1:14 ` Eric W. Biederman
2010-05-19 6:46 ` Borislav Petkov
2010-05-19 7:09 ` Ingo Molnar
2010-05-19 11:54 ` Mauro Carvalho Chehab
2010-05-20 12:37 ` Ingo Molnar
2010-06-14 10:03 ` Nils Carlson
2010-06-14 11:49 ` Andi Kleen
2010-06-14 19:47 ` Nils Carlson
2010-06-14 20:21 ` Andi Kleen
2010-06-14 20:06 ` Eric W. Biederman
2010-06-14 20:21 ` Luck, Tony
2010-06-14 20:36 ` Andi Kleen
2010-06-14 21:34 ` Tony Luck
2010-06-15 6:44 ` Andi Kleen [this message]
[not found] ` <35525.41387.qm@web50105.mail.re2.yahoo.com>
2010-06-15 6:56 ` Andi Kleen
2010-06-15 8:06 ` Nils Carlson
2010-06-15 10:01 ` Borislav Petkov
2010-06-15 11:41 ` Andi Kleen
2010-06-15 12:21 ` Nils Carlson
2010-06-15 18:15 ` Luck, Tony
2010-06-15 18:38 ` Nils Carlson
2010-06-15 19:37 ` Andi Kleen
2010-06-15 19:35 ` Andi Kleen
2010-06-15 20:48 ` Nils Carlson
2010-06-16 9:40 ` Andi Kleen
2010-06-15 22:33 ` Tony Luck
2010-05-19 9:03 ` Andi Kleen
2010-05-24 16:21 ` Russ Anderson
2010-05-24 18:26 ` Andi Kleen
2010-05-19 17:30 ` Tony Luck
2010-05-24 15:55 ` Russ Anderson
2010-05-24 17:35 ` Tony Luck
2010-05-24 18:31 ` Andi Kleen
2010-05-18 22:29 ` Ingo Molnar
2010-05-18 19:30 ` Ingo Molnar
2010-05-18 20:42 ` Ingo Molnar
2010-05-18 21:37 ` Tony Luck
2010-05-18 22:00 ` Ingo Molnar
2010-05-24 17:13 ` Russ Anderson
2010-05-19 6:39 ` Ingo Molnar
2010-05-18 13:06 ` Borislav Petkov
2010-05-18 16:52 ` Mauro Carvalho Chehab
2010-05-18 17:06 ` Mauro Carvalho Chehab
-- strict thread matches above, loose matches on Subject: below --
2010-06-16 8:57 George Spelvin
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