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Date: Thu, 4 Sep 2014 13:59:48 +0100
From: David Vrabel <david.vrabel@citrix.com>
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To: Juergen Gross <jgross@suse.com>, <linux-kernel@vger.kernel.org>,
        <xen-devel@lists.xensource.com>, <konrad.wilk@oracle.com>,
        <boris.ostrovsky@oracle.com>, <jbeulich@suse.com>
Subject: Re: [PATCH 3/3] xen: eliminate scalability issues from initial mapping
 setup
References: <1409834326-29287-1-git-send-email-jgross@suse.com> <1409834326-29287-4-git-send-email-jgross@suse.com>
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On 04/09/14 13:38, Juergen Gross wrote:
> Direct Xen to place the initial P->M table outside of the initial
> mapping, as otherwise the 1G (implementation) / 2G (theoretical)
> restriction on the size of the initial mapping limits the amount
> of memory a domain can be handed initially.

The three level p2m limits memory to 512 GiB on x86-64 but this patch
doesn't seem to address this limit and thus seems a bit useless to me.

David