linux-kernel - [PATCH 0/3 v4] mmu_notifier: Allow to manage CPU external TLBs

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Date:	Tue, 28 Oct 2014 18:13:57 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Rik van Riel <riel@...hat.com>,
	Hugh Dickins <hughd@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Johannes Weiner <jweiner@...hat.com>
Cc:	Jerome Glisse <jglisse@...hat.com>, Jay.Cornwall@....com,
	Oded.Gabbay@....com, John.Bridgman@....com,
	Suravee.Suthikulpanit@....com, ben.sander@....com,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	iommu@...ts.linux-foundation.org, jroedel@...e.de, joro@...tes.org
Subject: [PATCH 0/3 v4] mmu_notifier: Allow to manage CPU external TLBs

From: Joerg Roedel <jroedel@...e.de>

Changes V3->V4:

* Rebased to v3.18-rc2
* Updated patch description and some comments

Changes V2->V3:

* Rebased to v3.17-rc4
* Fixed compile error because pmdp_get_and_clear_notify was
  missing

Changes V1->V2:

* Rebase to v3.16-rc7
* Added call of ->invalidate_range to
  __mmu_notifier_invalidate_end() so that the subsystem
  doesn't need to register an ->invalidate_end() call-back,
  subsystems will likely either register
  invalidate_range_start/end or invalidate_range, so that
  should be fine.
* Re-orded declarations a bit to reflect that
  invalidate_range is not only called between
  invalidate_range_start/end
* Updated documentation to cover the case where
  invalidate_range is called outside of
  invalidate_range_start/end to flush page-table pages out
  of the TLB

Hi,

here is v4 of my patch-set which extends the mmu-notifiers
to allow managing CPU external TLBs. A more in-depth
description on the How and Why of this patch-set can be
found in the description of patch 1/3.

Any comments and review appreciated!

Thanks,

	Joerg

Joerg Roedel (3):
  mmu_notifier: Add mmu_notifier_invalidate_range()
  mmu_notifier: Call mmu_notifier_invalidate_range() from VMM
  mmu_notifier: Add the call-back for mmu_notifier_invalidate_range()

 include/linux/mmu_notifier.h | 88 +++++++++++++++++++++++++++++++++++++++++---
 kernel/events/uprobes.c      |  2 +-
 mm/fremap.c                  |  2 +-
 mm/huge_memory.c             |  9 +++--
 mm/hugetlb.c                 |  7 +++-
 mm/ksm.c                     |  4 +-
 mm/memory.c                  |  3 +-
 mm/migrate.c                 |  3 +-
 mm/mmu_notifier.c            | 25 +++++++++++++
 mm/rmap.c                    |  2 +-
 10 files changed, 128 insertions(+), 17 deletions(-)

-- 
1.8.4.5

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