From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: davem@redhat.com (David S. Miller)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox),
andrewm@uow.edu.au (Andrew Morton),
andrea@suse.de (Andrea Arcangeli),
ink@jurassic.park.msu.ru (Ivan Kokshaysky),
rth@twiddle.net (Richard Henderson),
linux-kernel@vger.kernel.org
Subject: Re: alpha iommu fixes
Date: Mon, 21 May 2001 09:03:30 +0100 (BST) [thread overview]
Message-ID: <E151kf4-0003TY-00@the-village.bc.nu> (raw)
In-Reply-To: <15112.51569.744590.398000@pizda.ninka.net> from "David S. Miller" at May 21, 2001 12:53:21 AM
> Alan Cox writes:
> > And how do you propose to implemnt cache coherent pci allocations
> > on machines which lack the ability to have pages coherent between
> > I/O and memory space ?
>
> Pages, being in memory space, are never in I/O space.
Ok my fault. Let me try that again with clearer Linux terminology.
Pages allocated in main memory and mapped for access by PCI devices. On some
HP systems there is now way for such a page to stay coherent. It is quite
possible to sync the view but there is no sane way to allow any
pci_alloc_consistent to succeed
Alan
next prev parent reply other threads:[~2001-05-21 8:07 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-18 17:46 Ivan Kokshaysky
2001-05-19 2:34 ` Tom Vier
2001-05-19 10:48 ` Ivan Kokshaysky
2001-05-19 20:58 ` Tom Vier
2001-05-19 13:55 ` Andrea Arcangeli
2001-05-19 19:11 ` Ivan Kokshaysky
2001-05-20 2:40 ` Andrea Arcangeli
2001-05-20 12:12 ` Ivan Kokshaysky
2001-05-20 13:40 ` Andrea Arcangeli
2001-05-20 14:23 ` Gérard Roudier
[not found] ` <3B07AF49.5A85205F@uow.edu.au>
2001-05-20 13:49 ` Andrea Arcangeli
2001-05-20 14:05 ` Andrew Morton
2001-05-20 14:33 ` Andrea Arcangeli
2001-05-21 1:01 ` David S. Miller
2001-05-21 1:47 ` Andrea Arcangeli
2001-05-21 7:05 ` David S. Miller
2001-05-21 8:59 ` Andrea Arcangeli
2001-05-21 9:50 ` Gerd Knorr
2001-05-21 9:02 ` David S. Miller
2001-05-21 9:23 ` Andi Kleen
2001-05-21 9:30 ` David S. Miller
2001-05-21 9:42 ` Andi Kleen
2001-05-21 10:02 ` Andrea Arcangeli
2001-05-21 10:17 ` Alan Cox
2001-05-21 10:00 ` David S. Miller
2001-05-21 10:27 ` Andi Kleen
2001-05-21 22:22 ` Jens Axboe
2001-05-21 10:34 ` David S. Miller
2001-05-21 10:42 ` Andi Kleen
2001-05-21 10:55 ` David S. Miller
2001-05-21 11:08 ` Andi Kleen
2001-05-21 11:36 ` David S. Miller
2001-05-21 11:41 ` Andi Kleen
2001-05-21 9:56 ` Andrea Arcangeli
2001-05-21 10:19 ` David S. Miller
2001-05-21 11:00 ` Andrea Arcangeli
2001-05-21 11:04 ` David S. Miller
2001-05-21 11:27 ` Andrea Arcangeli
2001-05-21 12:16 ` Peter Rival
2001-05-22 11:12 ` Chris Wedgwood
2001-05-22 17:51 ` Jonathan Lundell
2001-05-21 10:11 ` David S. Miller
2001-05-21 10:50 ` Andrea Arcangeli
2001-05-21 10:59 ` David S. Miller
2001-05-21 11:19 ` Andrea Arcangeli
2001-05-21 11:51 ` Ivan Kokshaysky
2001-05-21 17:53 ` Richard Henderson
2001-05-22 0:56 ` Andrea Arcangeli
2001-05-22 14:29 ` Andrea Arcangeli
2001-05-22 14:44 ` Ivan Kokshaysky
2001-05-22 15:00 ` Andrea Arcangeli
2001-05-22 20:28 ` Richard Henderson
2001-05-22 20:40 ` Jeff Garzik
2001-05-22 20:52 ` Andrea Arcangeli
2001-05-22 20:57 ` Richard Henderson
2001-05-22 21:09 ` Alan Cox
2001-05-22 21:08 ` Alan Cox
2001-05-22 20:48 ` Jonathan Lundell
2001-05-22 21:02 ` Richard Henderson
2001-05-22 21:10 ` Alan Cox
2001-05-22 21:17 ` Jonathan Lundell
2001-05-22 21:24 ` Alan Cox
2001-05-22 21:34 ` Jonathan Lundell
2001-05-22 15:18 ` Andrea Arcangeli
2001-05-22 15:55 ` Ivan Kokshaysky
2001-05-22 16:06 ` Andrea Arcangeli
2001-05-22 13:22 ` Andrea Arcangeli
2001-05-21 13:55 ` Jonathan Lundell
2001-05-21 14:17 ` Ivan Kokshaysky
2001-05-21 15:47 ` Jonathan Lundell
2001-05-20 16:18 ` Andrea Arcangeli
2001-05-20 16:21 ` Andrew Morton
2001-05-20 16:44 ` Andrea Arcangeli
2001-05-20 16:54 ` Andrew Morton
2001-05-20 17:12 ` Andrea Arcangeli
2001-05-21 1:07 ` David S. Miller
2001-05-21 1:37 ` Andrea Arcangeli
2001-05-21 6:53 ` David S. Miller
2001-05-21 7:59 ` Alan Cox
2001-05-21 8:06 ` Chris Wedgwood
2001-05-21 8:09 ` David S. Miller
2001-05-21 8:09 ` Alan Cox
2001-05-23 0:05 ` Albert D. Cahalan
2001-05-22 13:11 ` Pavel Machek
2001-05-22 23:02 ` David S. Miller
2001-05-20 17:16 ` Jeff Garzik
2001-05-20 17:37 ` Andrea Arcangeli
2001-05-21 1:00 ` David S. Miller
2001-05-21 7:47 ` Alan Cox
2001-05-21 7:53 ` David S. Miller
2001-05-21 8:03 ` Alan Cox [this message]
2001-05-21 8:11 ` David S. Miller
2001-05-21 1:03 ` David S. Miller
2001-05-21 1:58 ` Richard Henderson
2001-05-20 1:11 ` Richard Henderson
2001-05-20 12:05 ` Ivan Kokshaysky
2001-05-21 0:37 ` Richard Henderson
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