From: Robin Holt <holt@sgi.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrea Arcangeli <andrea@qumranet.com>, Robin Holt <holt@sgi.com>,
Avi Kivity <avi@qumranet.com>, Izik Eidus <izike@qumranet.com>,
kvm-devel@lists.sourceforge.net,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
steiner@sgi.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, daniel.blueman@quadrics.com
Subject: Re: mmu_notifier: invalidate_range for move_page_tables
Date: Thu, 31 Jan 2008 20:38:15 -0600 [thread overview]
Message-ID: <20080201023815.GC26420@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801311752200.24427@schroedinger.engr.sgi.com>
On Thu, Jan 31, 2008 at 05:57:25PM -0800, Christoph Lameter wrote:
> Move page tables also needs to invalidate the external references
> and hold new references off while moving page table entries.
I must admit to not having spent any time thinking about this, but aren't
we moving the entries from one set of page tables to the other, leaving
the pte_t entries unchanged. I guess I should go look, but could you
provide a quick pointer in the proper direction as to why we need to
recall externals when the before and after look of these page tables
will have the same information for the TLBs.
Thanks,
Robin
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next prev parent reply other threads:[~2008-02-01 2:38 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-31 4:57 [patch 0/3] [RFC] MMU Notifiers V4 Christoph Lameter
2008-01-31 4:57 ` [patch 1/3] mmu_notifier: Core code Christoph Lameter
2008-02-01 1:56 ` Jack Steiner
2008-02-01 2:24 ` Robin Holt
2008-02-01 2:37 ` Jack Steiner
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:31 ` Robin Holt
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:47 ` Robin Holt
2008-02-01 3:01 ` Christoph Lameter
2008-02-01 3:01 ` Jack Steiner
2008-02-01 3:03 ` Christoph Lameter
2008-02-01 3:52 ` Robin Holt
2008-02-01 3:58 ` Christoph Lameter
2008-02-01 4:15 ` Robin Holt
2008-02-03 1:33 ` Andrea Arcangeli
2008-02-04 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-01-31 12:31 ` Andrea Arcangeli
2008-01-31 20:07 ` Christoph Lameter
2008-01-31 22:01 ` mmu_notifier: close hole in fork Christoph Lameter
2008-01-31 22:16 ` mmu_notifier: reduce size of mm_struct if !CONFIG_MMU_NOTIFIER Christoph Lameter
2008-01-31 22:21 ` mmu_notifier: Move mmu_notifier_release up to get rid of the invalidat_all() callback Christoph Lameter
2008-02-01 0:13 ` Andrea Arcangeli
2008-02-01 1:52 ` Christoph Lameter
2008-02-01 1:57 ` mmu_notifier: invalidate_range for move_page_tables Christoph Lameter
2008-02-01 2:38 ` Robin Holt [this message]
2008-02-01 2:41 ` Christoph Lameter
2008-02-01 0:01 ` mmu_notifier: close hole in fork Andrea Arcangeli
2008-02-01 1:48 ` Christoph Lameter
2008-02-01 4:24 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Robin Holt
2008-02-01 4:43 ` Christoph Lameter
2008-02-01 10:32 ` Robin Holt
2008-02-01 10:37 ` Robin Holt
2008-02-01 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 3/3] mmu_notifier: invalidate_page callbacks Christoph Lameter
2008-01-31 17:18 ` [PATCH] mmu notifiers #v5 Andrea Arcangeli
2008-01-31 20:18 ` Christoph Lameter
2008-01-31 23:09 ` Christoph Lameter
2008-01-31 23:41 ` Andrea Arcangeli
2008-02-01 1:44 ` Christoph Lameter
2008-02-01 12:09 ` Andrea Arcangeli
2008-02-01 19:23 ` Christoph Lameter
2008-02-03 2:17 ` Andrea Arcangeli
2008-02-03 3:14 ` Jack Steiner
2008-02-03 3:33 ` Andrea Arcangeli
2008-02-04 19:09 ` Christoph Lameter
2008-02-05 5:25 ` Andrea Arcangeli
2008-02-05 6:11 ` Christoph Lameter
2008-02-05 18:08 ` Andrea Arcangeli
2008-02-05 18:17 ` Christoph Lameter
2008-02-05 20:55 ` Andrea Arcangeli
2008-02-05 22:06 ` Christoph Lameter
2008-02-05 22:12 ` Robin Holt
2008-02-05 22:26 ` Andrea Arcangeli
2008-02-05 23:10 ` Christoph Lameter
2008-02-05 23:47 ` Andrea Arcangeli
2008-02-06 0:04 ` Christoph Lameter
2008-01-31 23:28 ` Andrea Arcangeli
2008-02-01 1:37 ` Christoph Lameter
2008-02-01 2:23 ` Robin Holt
2008-02-01 2:26 ` Christoph Lameter
2008-02-01 12:00 ` Andrea Arcangeli
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