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Date:	Thu, 24 Jul 2014 16:44:49 +0200
From:	Andrea Arcangeli <>
To:	Joerg Roedel <>
Cc:	Andrew Morton <>,
	Peter Zijlstra <>,
	Rik van Riel <>,
	Hugh Dickins <>, Mel Gorman <>,
	Johannes Weiner <>,
	Jerome Glisse <>,,,,,,,
	Jesse Barnes <>,
	David Woodhouse <>,,,
Subject: Re: [PATCH 0/3] mmu_notifier: Allow to manage CPU external TLBs

On Thu, Jul 24, 2014 at 04:35:38PM +0200, Joerg Roedel wrote:
> To solve this situation I wrote a patch-set to introduce a
> new notifier call-back: mmu_notifer_invalidate_range(). This
> notifier lifts the strict requirements that no new
> references are taken in the range between _start() and
> _end(). When the subsystem can't guarantee that any new
> references are taken is has to provide the
> invalidate_range() call-back to clear any new references in
> there.
> It is called between invalidate_range_start() and _end()
> every time the VMM has to wipe out any references to a
> couple of pages. This are usually the places where the CPU
> TLBs are flushed too and where its important that this
> happens before invalidate_range_end() is called.
> Any comments and review appreciated!

Reviewed-by: Andrea Arcangeli <>
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