linux-kernel - Re: [PATCH 2/2] mm: add 'foreign' alias for the 'pinned' page flag

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Message-Id: <20150122160633.350f22805e20c0c432755e02@linux-foundation.org>
Date:	Thu, 22 Jan 2015 16:06:33 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Vrabel <david.vrabel@...rix.com>
Cc:	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	"Jenny Herbert" <jennifer.herbert@...rix.com>
Subject: Re: [PATCH 2/2] mm: add 'foreign' alias for the 'pinned' page flag

On Mon, 19 Jan 2015 15:47:23 +0000 David Vrabel <david.vrabel@...rix.com> wrote:

> From: Jenny Herbert <jennifer.herbert@...rix.com>
> 
> The foreign page flag will be used by Xen guests to mark pages that
> have grant mappings of frames from other (foreign) guests.
> 
> The foreign flag is an alias for the existing (Xen-specific) pinned
> flag.  This is safe because pinned is only used on pages used for page
> tables and these cannot also be foreign.
> 

Acked-by: Andrew Morton <akpm@...ux-foundation.org>
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