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Date: Mon, 11 Jul 2011 17:25:17 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Hugh Dickins <hughd@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, greg@kroah.com,
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Subject: Re: [PATCH 34/49] gma500: the GEM and GTT code is device
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> Your <4GB pages won't get swapped out while they're pinned.  But can
> it happen that they'd be unpinned, swapped out, swapped back in >4GB
> pages, then cause trouble for you when needed again?

It does look that way, in which case that will eventually need fixing. At
the moment you can't put enough memory into a device using these chips
but that won't always be true I imagine.

Alan