From: Thomas Goirand <thomas@goirand.fr>
To: xen-devel@lists.xensource.com
Subject: Re: Debian linux-image-2.6.32-4-xen-amd64 2.6.32-11 doesn't boot with > 4 GiB; resets immediatelly, no log messages
Date: Sun, 11 Apr 2010 17:49:30 +0800 [thread overview]
Message-ID: <4BC19B2A.3040501@goirand.fr> (raw)
In-Reply-To: <4BC1013D.2020003@goop.org>
Jeremy Fitzhardinge wrote:
> On 04/10/2010 03:13 PM, Thomas Schwinge wrote:
>>> Normally that would be OK, because it uses:
>>>
>>> __get_user(pfn, &machine_to_phys_mapping[mfn]);
>>>
>>> to dereference the array. But at this early stage, none of the kernel's
>>> exception handlers have been set up, so this will just fault into Xen.
>>>
>>> It would be interesting to confirm this by building your kernel with
>>> CONFIG_DEBUG_INFO=y in the .config, and verify that the faulting
>>> instruction is actually this line.
>>>
>> Bingo!
>>
>
> Excellent.
Could this be also the reason why I had very funky memory management
(eg: some RAM missing between "xm list" and "xm info")?
Thomas
next prev parent reply other threads:[~2010-04-11 9:49 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-08 11:34 Debian linux-image-2.6.32-4-xen-amd64 2.6.32-11 doesn't boot with > 4 GiB; resets immediatelly, no log messages Thomas Schwinge
2010-04-08 13:38 ` Konrad Rzeszutek Wilk
2010-04-08 13:42 ` Ian Campbell
2010-04-08 22:19 ` Thomas Schwinge
2010-04-08 22:51 ` Jeremy Fitzhardinge
2010-04-09 18:00 ` Thomas Schwinge
2010-04-09 18:20 ` Jeremy Fitzhardinge
2010-04-10 22:13 ` Thomas Schwinge
2010-04-10 22:52 ` Jeremy Fitzhardinge
2010-04-11 9:49 ` Thomas Goirand [this message]
2010-04-12 19:34 ` Jeremy Fitzhardinge
2010-04-13 1:20 ` Thomas Goirand
2010-04-13 6:02 ` Pasi Kärkkäinen
2010-04-13 9:48 ` Thomas Goirand
2010-04-13 9:52 ` Pasi Kärkkäinen
2010-04-13 10:08 ` Thomas Goirand
2010-04-13 19:50 ` Jeremy Fitzhardinge
2010-04-13 22:27 ` Thomas Goirand
2010-04-13 23:16 ` Mike Viau
2010-04-13 23:59 ` Jeremy Fitzhardinge
2010-04-14 5:48 ` Thomas Goirand
2010-04-20 11:18 ` Thomas Schwinge
2010-04-20 18:19 ` Jeremy Fitzhardinge
2010-04-28 21:21 ` Jeremy Fitzhardinge
2010-05-08 15:46 ` Thomas Schwinge
2010-05-08 23:01 ` Jeremy Fitzhardinge
2010-05-10 9:48 ` Thomas Schwinge
2010-04-09 18:52 ` Konrad Rzeszutek Wilk
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