linux-kernel - Re: Cannot boot xen DomU

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Message-ID: <519a8b110801180856o7757889as47106fd3eabcc0de@mail.gmail.com>
Date:	Fri, 18 Jan 2008 17:56:09 +0100
From:	xming <xmingske@...il.com>
To:	"Jeremy Fitzhardinge" <jeremy@...p.org>
Cc:	linux-kernel@...r.kernel.org,
	Xen-devel <xen-devel@...ts.xensource.com>
Subject: Re: Cannot boot xen DomU > 2.6.23.1

On Jan 18, 2008 5:19 PM, Jeremy Fitzhardinge <jeremy@...p.org> wrote:

> > First of all this patch solves the lock-ups, it works as advertised :)
>
> OK, good.  I guess events are getting lost somewhere with vcpu_info
> placement.


> Would it be possible to map the eip and some top parts of the stack back
> to kernel symbols?  Seems to be the same place in both traces, which is
> interesting.

Can you tell me how, or show me some pointers?


> > Scenario 2 (have_vcpu_info_placement = 0)
> > --------------------------------------------------------------
> >
> > test1: no crash
> > test2: no crash, but occationally I still get funny output like this
> >
> > 00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 0000AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 000AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 000AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> > 00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
> >
>
> Hm, I guess some of the output is getting dropped.  Does this happen
> with 2.6.18-xen?

yes it does

00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
0000AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ
00AAAAAAAAAAAAAAAAAAAAAAAAAAZZ

# uname -a
Linux builder 2.6.18-xen-r8 #3 SMP Thu Dec 20 15:07:20 CET 2007 i686
AMD Athlon(tm) X2 Dual Core Processor BE-2300 AuthenticAMD GNU/Linux

cheers

xming
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