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Date: Tue, 8 Mar 2011 20:09:48 +0000
From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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To: Yinghai Lu <yinghai@kernel.org>
CC: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>
Subject: Re: "x86-64, mm: Put early page table high" causes crash on Xen
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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