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Re: [Xen-devel] [PATCH] xen: release all pages within 1-1 p2m mappings

from [David Vrabel] [Permanent Link][Original]
To: David Vrabel <david.vrabel@xxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] xen: release all pages within 1-1 p2m mappings
From: David Vrabel <david.vrabel@xxxxxxxxxx>
Date: Thu, 29 Sep 2011 12:29:09 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.16) Gecko/20110818 Icedove/3.0.11 
Er. This was the wrong patch.  I meant to repost "xen: allow extra
memory to be in multiple regions" to remove unnecessary test of
E820_UNUSABLE in xen_align_and_add_e820_region().

Sorry.

David

On 29/09/11 12:08, David Vrabel wrote:
> From: David Vrabel <david.vrabel@xxxxxxxxxx>
> 
> In xen_memory_setup() all reserved regions and gaps are set to an
> identity (1-1) p2m mapping.  If an available page has a PFN within one
> of these 1-1 mappings it will become inaccessible (as it MFN is lost)
> so release them before setting up the mapping.
>
> [...]

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