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Re: [Xen-devel] [PATCH] let XEN depend on PAE

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] let XEN depend on PAE
From: Arnd Hannemann <hannemann@xxxxxxxxxxxxxxxxxxx>
Date: Sat, 23 Feb 2008 13:37:08 +0100
Cc: Chris Wright <chrisw@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
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Arnd Hannemann wrote:
> Jeremy Fitzhardinge wrote:
>> Arnd Hannemann wrote:
>>> This is with, but latest-git looks the same:
>>> I also tried with 2.6.23 which crashes instantly, without any output
>>> of the guest.
>> I'm not too surprised.  Non-PAE Xen is a bit of a rarity, and it only
>> gets tested rarely.  Chris Wright did spend some time on it a while ago,
>> but I don't know that its had any real attention since.  I've been
>> making sure non-PAE compiles, but I've been lax about testing it.
>> This is the first usermode exec, I guess?  The backtrace is a bit odd;
>> I've never seen a problem in move_page_tables before.
> Yes its trying to execute the first script in initramfs, I also tried with 
> initramdisk
> and got a similar error. (move_page_tables also involved)
>> Does "xm dmesg" tell you what Xen is complaining about?  You may need to
>> compile with debug=y in Config.mk.
> (XEN) mm.c:645:d44 Non-privileged (44) attempt to map I/O space 00000000
> I will recompile with debug=y and post the output.

I recompiled with debug=y but no more information than above message...



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