linux-kernel - Re: [PATCH 1/8] xen: Mark all initial reserved pages for the balloon as INVALID_P2M

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Message-ID: <1294158888.3831.509.camel@zakaz.uk.xensource.com>
Date:	Tue, 4 Jan 2011 16:34:48 +0000
From:	Ian Campbell <Ian.Campbell@...citrix.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"Jan Beulich" <JBeulich@...ell.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Konrad Rzeszutek Wilk <konrad@...nel.org>,
	Stefano Stabellini <Stefano.Stabellini@...citrix.com>
Subject: Re: [PATCH 1/8] xen: Mark all initial reserved pages for the
 balloon as INVALID_P2M_ENTRY.

On Thu, 2010-12-30 at 19:48 +0000, Konrad Rzeszutek Wilk wrote:
> With this patch, we diligently set regions that will be used by the
> balloon driver to be INVALID_P2M_ENTRY and under the ownership
> of the balloon driver. We are OK using the __set_phys_to_machine
> as we do not expect to be allocating any P2M middle or entries pages.

... because xen_build_mfn_list_list will have already allocated all such
pages up to xen_max_p2m_pfn.

(right?)

Ian.


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