From: Kazuto Miyoshi <miyoshi@linux.bs1.fc.nec.co.jp>
To: linux-ia64@vger.kernel.org
Subject: Re: INIT dumps broken?
Date: Thu, 16 Sep 2004 13:51:09 +0000 [thread overview]
Message-ID: <20040916.225109.395614316.miyoshi@linux.bs1.fc.nec.co.jp> (raw)
In-Reply-To: <200409141450.i8EEotfk029379@napali.hpl.hp.com>
Hello,
Thank you for detailed explanation.
> So if our task is anything other than the initial "init_task",
> we'll take a nice region 7 address from ar.k6, and convert to
> physical by zapping bits [63:61]. But we happen to be running
> the init_task, then ar.k6 contains a region 5 address, and we
> create a garbage address by clearing the high bits, which can
> lead to an MCA (if the address points somewhere bad) or to
> stomping on some random place (if the address happens to be a
> legal physical address).
I checked the INIT log and it showed r13 and xip had actually 0xa..
address, the "stomping on some random place" scenario is probable.
I tried reducing memory from 2GB and it reproduced the MCA.
Best Regards,
--
Kazuto Miyoshi, NEC
miyoshi@hpc.bs1.fc.nec.co.jp
next prev parent reply other threads:[~2004-09-16 13:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-14 14:50 INIT dumps broken? David Mosberger
2004-09-14 18:42 ` Luck, Tony
2004-09-15 7:16 ` Keith Owens
2004-09-15 7:56 ` David Mosberger
2004-09-15 14:14 ` Keith Owens
2004-09-15 15:35 ` Luck, Tony
2004-09-15 16:00 ` Kazuto Miyoshi
2004-09-15 17:35 ` Luck, Tony
2004-09-15 21:38 ` Russ Anderson
2004-09-15 22:23 ` Luck, Tony
2004-09-16 6:49 ` Christian Hildner
2004-09-16 13:51 ` Kazuto Miyoshi [this message]
2004-09-27 13:34 ` Takao Indoh
2004-09-27 23:03 ` Keith Owens
2004-09-28 0:03 ` Takao Indoh
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