From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>
Subject: Re: [Bug #10872] x86_64 boot hang when CONFIG_NUMA=n
Date: Mon, 7 Jul 2008 08:32:18 +0200
Message-ID: <20080707063218.GC23583@elte.hu>
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To: Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Cc: Randy Dunlap <randy.dunlap-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>, "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>, Linux Kernel Mailing List <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Kernel Testers List <kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Yinghai Lu <yhlu.kernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>


* Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org> wrote:

> > This still happens with 2.6.26-rc9.  Using CONFIG_NUMA=y boots OK.
> 
> Ok, then it wasn't the nr_zones thing.
> 
> Since it seems to be repeatable for you, can you bisect it?

one guess would be:

| commit e8ee6f0ae5cd860e8e6c02807edfa3c1fa01bcb5
| Author: Yinghai Lu <yhlu.kernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
| Date:   Sun Apr 13 01:41:58 2008 -0700
|
|     x86: work around io allocation overlap of HT links

but ... since CONFIG_NUMA makes it work, i'm not sure about that.

Randy, could you post the full CONFIG_NUMA bootlog as well, does it show 
any difference in resource allocations?

	Ingo