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Message-ID: <alpine.DEB.2.00.1103081913560.2968@kaball-desktop>
Date:	Tue, 8 Mar 2011 20:09:48 +0000
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Stefano Stabellini <Stefano.Stabellini@...citrix.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Jeremy Fitzhardinge <Jeremy.Fitzhardinge@...rix.com>
Subject: Re: "x86-64, mm: Put early page table high" causes crash on Xen

On Tue, 8 Mar 2011, Yinghai Lu wrote:
> [    0.000000] kernel direct mapping tables up to 7f750000 @
> [0x7f74c000-0x7f74ffff] pre-allocated
> [    0.000000] DEBUG map_low_page phys    243a000
> [    0.000000] DEBUG map_low_page phys    243e000
> [    0.000000] DEBUG alloc_low_page phys   7f74c000
> [    0.000000] DEBUG map_low_page phys    243a000
> [    0.000000] DEBUG map_low_page phys   7f74c000
> [    0.000000] DEBUG alloc_low_page phys   7f74d000
> 

I couldn't see this on my machine but I was afraid it could happen on
some hardware :(
Thank you very much for spending your time on this and for your kind
replies.
I'll follow up with an update of the xen specific patch I posted before
and I won't bother you again with this :)
Cheers,

Stefano
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