From: Robin Holt <holt-sJ/iWh9BUns@public.gmane.org>
To: Christoph Lameter <clameter-sJ/iWh9BUns@public.gmane.org>
Cc: Andrea Arcangeli <andrea-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
Peter Zijlstra
<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
steiner-sJ/iWh9BUns@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
daniel.blueman-xqY44rlHlBpWk0Htik3J/w@public.gmane.org,
Robin Holt <holt-sJ/iWh9BUns@public.gmane.org>
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-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
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
[not found] ` <20080131045812.553249048-sJ/iWh9BUns@public.gmane.org>
2008-02-01 1:56 ` Jack Steiner
[not found] ` <20080201015611.GA15893-sJ/iWh9BUns@public.gmane.org>
2008-02-01 2:24 ` Robin Holt
[not found] ` <20080201022444.GA26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 2:37 ` Jack Steiner
[not found] ` <20080201023659.GA30057-sJ/iWh9BUns@public.gmane.org>
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:31 ` Robin Holt
[not found] ` <20080201023113.GB26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 2:39 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801311838070.26594-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-01 2:47 ` Robin Holt
[not found] ` <20080201024742.GD26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 3:01 ` Christoph Lameter
2008-02-01 3:01 ` Jack Steiner
[not found] ` <20080201030104.GA29417-sJ/iWh9BUns@public.gmane.org>
2008-02-01 3:03 ` Christoph Lameter
2008-02-01 3:52 ` Robin Holt
[not found] ` <20080201035249.GE26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 3:58 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801311957250.17649-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-01 4:15 ` Robin Holt
2008-02-03 1:33 ` Andrea Arcangeli
[not found] ` <20080203013323.GA7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-04 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
[not found] ` <20080131045812.785269387-sJ/iWh9BUns@public.gmane.org>
2008-01-31 12:31 ` Andrea Arcangeli
[not found] ` <20080131123118.GK7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-31 20:07 ` Christoph Lameter
2008-01-31 22:01 ` mmu_notifier: close hole in fork Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801311355260.27804-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
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
[not found] ` <Pine.LNX.4.64.0801311421110.22290-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-01 0:13 ` Andrea Arcangeli
[not found] ` <20080201001355.GU7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-01 1:52 ` Christoph Lameter
2008-02-01 1:57 ` mmu_notifier: invalidate_range for move_page_tables Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801311752200.24427-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-01 2:38 ` Robin Holt [this message]
[not found] ` <20080201023815.GC26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 2:41 ` Christoph Lameter
2008-02-01 0:01 ` mmu_notifier: close hole in fork Andrea Arcangeli
[not found] ` <20080201000158.GT7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-01 1:48 ` Christoph Lameter
2008-02-01 4:24 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Robin Holt
[not found] ` <20080201042408.GG26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 4:43 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801312042500.20675-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-01 10:32 ` Robin Holt
2008-02-01 10:37 ` Robin Holt
[not found] ` <20080201103221.GH26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 3/3] mmu_notifier: invalidate_page callbacks Christoph Lameter
[not found] ` <20080131045750.855008281-sJ/iWh9BUns@public.gmane.org>
2008-01-31 17:18 ` [PATCH] mmu notifiers #v5 Andrea Arcangeli
[not found] ` <20080131171806.GN7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-31 20:18 ` Christoph Lameter
2008-01-31 23:09 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801311508080.23624-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-31 23:41 ` Andrea Arcangeli
[not found] ` <20080131234101.GS7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-01 1:44 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801311738570.24297-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-01 12:09 ` Andrea Arcangeli
[not found] ` <20080201120955.GX7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-01 19:23 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0802011118060.18163-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-03 2:17 ` Andrea Arcangeli
[not found] ` <20080203021704.GC7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-03 3:14 ` Jack Steiner
[not found] ` <20080203031457.GA16127-sJ/iWh9BUns@public.gmane.org>
2008-02-03 3:33 ` Andrea Arcangeli
2008-02-04 19:09 ` Christoph Lameter
2008-02-05 5:25 ` Andrea Arcangeli
[not found] ` <20080205052525.GD7441-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-05 6:11 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0802042206200.6739-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-05 18:08 ` Andrea Arcangeli
[not found] ` <20080205180802.GE7441-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-05 18:17 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0802051013440.11705-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-05 20:55 ` Andrea Arcangeli
[not found] ` <20080205205519.GF7441-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-05 22:06 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0802051400200.14665-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-05 22:12 ` Robin Holt
2008-02-05 22:26 ` Andrea Arcangeli
[not found] ` <20080205222657.GG7441-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-05 23:10 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0802051504450.16261-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-05 23:47 ` Andrea Arcangeli
[not found] ` <20080205234742.GI7441-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-06 0:04 ` Christoph Lameter
2008-01-31 23:28 ` Andrea Arcangeli
[not found] ` <20080131232842.GQ7185-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-02-01 1:37 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801311733140.24297-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-02-01 2:23 ` Robin Holt
[not found] ` <20080201022321.GZ26420-sJ/iWh9BUns@public.gmane.org>
2008-02-01 2:26 ` Christoph Lameter
2008-02-01 12:00 ` Andrea Arcangeli
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