From: R S <srssum1ne@hotmail.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: andrea@qumranet.com, a.p.zijlstra@chello.nl, izike@qumranet.com,
steiner@sgi.com, linux-kernel@vger.kernel.org, avi@qumranet.com,
linux-mm@kvack.org, daniel.blueman@quadrics.com, holt@sgi.com,
general@lists.openfabrics.org, akpm@linux-foundation.org,
kvm-devel@lists.sourceforge.net
Subject: [ofa-general] trying to get of all lists
Date: Fri, 8 Feb 2008 16:21:37 -0800 [thread overview]
Message-ID: <BAY104-W10A5647720759A7DFC8EBFEC280@phx.gbl> (raw)
In-Reply-To: <Pine.LNX.4.64.0802081614030.5115@schroedinger.engr.sgi.com>
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> Date: Fri, 8 Feb 2008 16:16:34 -0800> From: clameter@sgi.com> To: rdreier@cisco.com> CC: akpm@linux-foundation.org; andrea@qumranet.com; a.p.zijlstra@chello.nl; linux-mm@kvack.org; izike@qumranet.com; steiner@sgi.com; linux-kernel@vger.kernel.org; avi@qumranet.com; kvm-devel@lists.sourceforge.net; daniel.blueman@quadrics.com; holt@sgi.com; general@lists.openfabrics.org> Subject: Re: [ofa-general] Re: [patch 0/6] MMU Notifiers V6> > On Fri, 8 Feb 2008, Roland Dreier wrote:> > > In general, this MMU notifier stuff will only be useful to a subset of> > InfiniBand/RDMA hardware. Some adapters are smart enough to handle> > changing the IO virtual -> bus/physical mapping on the fly, but some> > aren't. For the dumb adapters, I think the current ib_umem_get() is> > pretty close to as good as we can get: we have to keep the physical> > pages pinned for as long as the adapter is allowed to DMA into the> > memory region.> > I thought the adaptor can always remove the mapping by renegotiating > with the remote side? Even if its dumb then a callback could notify the > driver that it may be required to tear down the mapping. We then hold the > pages until we get okay by the driver that the mapping has been removed.> > We could also let the unmapping fail if the driver indicates that the > mapping must stay.> --> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in> the body of a message to majordomo@vger.kernel.org> More majordomo info at http://vger.kernel.org/majordomo-info.html> Please read the FAQ at http://www.tux.org/lkml/
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next prev parent reply other threads:[~2008-02-09 0:21 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-08 22:06 [patch 0/6] MMU Notifiers V6 Christoph Lameter
2008-02-08 22:06 ` [patch 1/6] mmu_notifier: Core code Christoph Lameter
2008-02-08 22:06 ` [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-02-08 22:06 ` [patch 3/6] mmu_notifier: invalidate_page callbacks Christoph Lameter
2008-02-08 22:06 ` [patch 4/6] mmu_notifier: Skeleton driver for a simple mmu_notifier Christoph Lameter
2008-02-08 22:06 ` [patch 5/6] mmu_notifier: Support for drivers with revers maps (f.e. for XPmem) Christoph Lameter
2008-02-08 22:06 ` [patch 6/6] mmu_rmap_notifier: Skeleton for complex driver that uses its own rmaps Christoph Lameter
2008-02-08 22:23 ` [patch 0/6] MMU Notifiers V6 Andrew Morton
2008-02-08 23:32 ` Christoph Lameter
2008-02-08 23:36 ` Robin Holt
2008-02-08 23:41 ` Christoph Lameter
2008-02-08 23:43 ` Robin Holt
2008-02-08 23:56 ` Andrew Morton
2008-02-09 0:05 ` Christoph Lameter
2008-02-09 0:12 ` [ofa-general] " Roland Dreier
2008-02-09 0:16 ` Christoph Lameter
2008-02-09 0:21 ` R S [this message]
2008-02-09 0:22 ` Roland Dreier
2008-02-09 0:36 ` Christoph Lameter
2008-02-09 1:24 ` Andrea Arcangeli
2008-02-09 1:27 ` Christoph Lameter
2008-02-09 1:56 ` Andrea Arcangeli
2008-02-09 2:16 ` Christoph Lameter
2008-02-09 12:55 ` Rik van Riel
2008-02-09 21:46 ` Christoph Lameter
2008-02-11 22:40 ` Demand paging for memory regions (was Re: MMU Notifiers V6) Roland Dreier
2008-02-12 22:01 ` Steve Wise
2008-02-12 22:10 ` Christoph Lameter
2008-02-12 22:41 ` [ofa-general] Re: Demand paging for memory regions Roland Dreier
2008-02-12 23:14 ` Felix Marti
2008-02-13 0:57 ` Christoph Lameter
2008-02-14 15:09 ` Steve Wise
2008-02-14 15:53 ` Robin Holt
2008-02-14 16:23 ` Steve Wise
2008-02-14 17:48 ` Caitlin Bestler
2008-02-14 20:47 ` David Singleton
2008-02-15 9:55 ` Robin Holt
2008-02-14 19:39 ` Christoph Lameter
2008-02-14 20:17 ` Caitlin Bestler
2008-02-14 20:20 ` Christoph Lameter
2008-02-14 22:43 ` Caitlin Bestler
2008-02-14 22:48 ` Christoph Lameter
2008-02-15 1:26 ` Caitlin Bestler
2008-02-15 2:37 ` Christoph Lameter
2008-02-15 18:09 ` Caitlin Bestler
2008-02-15 18:45 ` Christoph Lameter
2008-02-15 18:53 ` Caitlin Bestler
2008-02-15 20:02 ` Christoph Lameter
2008-02-15 20:14 ` Caitlin Bestler
2008-02-15 22:50 ` Christoph Lameter
2008-02-15 23:50 ` Caitlin Bestler
2008-02-12 23:23 ` Jason Gunthorpe
2008-02-13 1:01 ` Christoph Lameter
2008-02-13 1:26 ` Jason Gunthorpe
2008-02-13 1:45 ` Steve Wise
2008-02-13 2:35 ` Christoph Lameter
2008-02-13 3:25 ` Jason Gunthorpe
2008-02-13 3:56 ` Patrick Geoffray
2008-02-13 4:26 ` Jason Gunthorpe
2008-02-13 4:47 ` Patrick Geoffray
2008-02-13 18:51 ` Christoph Lameter
2008-02-13 19:51 ` Jason Gunthorpe
2008-02-13 20:36 ` Christoph Lameter
2008-02-13 4:09 ` Christian Bell
2008-02-13 19:00 ` Christoph Lameter
2008-02-13 19:46 ` Christian Bell
2008-02-13 20:32 ` Christoph Lameter
2008-02-13 22:44 ` Kanoj Sarcar
2008-02-13 23:02 ` Christoph Lameter
2008-02-13 23:43 ` Kanoj Sarcar
2008-02-13 23:48 ` Jesse Barnes
2008-02-14 0:56 ` [ofa-general] " Andrea Arcangeli
2008-02-14 19:35 ` Christoph Lameter
2008-02-13 23:23 ` Pete Wyckoff
2008-02-14 0:01 ` Jason Gunthorpe
2008-02-27 22:11 ` Christoph Lameter
2008-02-13 1:55 ` Christian Bell
2008-02-13 2:19 ` Christoph Lameter
2008-02-13 0:56 ` Christoph Lameter
2008-02-13 12:11 ` Christoph Raisch
2008-02-13 19:02 ` Christoph Lameter
2008-02-09 0:12 ` [patch 0/6] MMU Notifiers V6 Andrew Morton
2008-02-09 0:18 ` Christoph Lameter
2008-02-13 14:31 ` Jack Steiner
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