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Date: Wed, 06 Jun 2007 21:12:14 +0200
From: Peter Zijlstra <a.p.zijlstra@...llo.nl>
To: Ollie Wild <aaw@...gle.com>
Cc: linux-kernel@...r.kernel.org, parisc-linux@...ts.parisc-linux.org,
linux-mm@...ck.org, linux-arch@...r.kernel.org,
Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...e.hu>,
Andi Kleen <ak@...e.de>
Subject: Re: [PATCH 3/4] mm: move_page_tables{,_up}
On Wed, 2007-06-06 at 12:06 -0700, Ollie Wild wrote:
> On 6/5/07, Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> > Provide functions for moving page tables upwards.
>
> Now that we're initializing the temporary stack location to
> STACK_TOP_MAX, do we still need move_page_tables_up() for variable
> length argument support? I originally added it into shift_arg_pages()
> to support 32-bit apps exec'ing 64-bit apps when we were using
> TASK_SIZE as our temporary location.
>
> Maybe we should decouple this patch from the others and submit it as
> an enhancement to support memory defragmentation.
PA-RISC will still need it, right?
On the defrag thingy, I talked with Mel today, and neither of us can see
a usefull application of these functions to his defrag work.
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