Hi, Keir, 
 This issue is caused by the 2MB superpage patch in Xen C/S 17645. It seems 
that any linux guest (hap=0, using shadow) with more than 4G memory will fail 
to boot (4095M memory can boot successful). I haven't tried EPT guest.
-- Dongxiao
-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Keir Fraser
Sent: 2008年5月23日 15:54
To: Li, Haicheng; xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] VMX status report. Xen: #17702 & Xen0: #559 -- nonew 
issue
On 23/5/08 07:12, "Li, Haicheng" <haicheng.li@xxxxxxxxx> wrote:
> Old issues:
> ==============================================
> 1. linux guest kernel panic when booting up with 4G memory.
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1255 
Can you provide more info on this one? Linux version, configuration, etc?
And/or send me the vmlinux/bzImage files privately to try to repro.
 -- Keir
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