From: Andrea Arcangeli <andrea@suse.de>
To: "David S. Miller" <davem@redhat.com>
Cc: Andrew Morton <andrewm@uow.edu.au>,
Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
Richard Henderson <rth@twiddle.net>,
linux-kernel@vger.kernel.org
Subject: Re: alpha iommu fixes
Date: Mon, 21 May 2001 13:00:34 +0200 [thread overview]
Message-ID: <20010521130034.L30738@athlon.random> (raw)
In-Reply-To: <3B07CF20.2ABB5468@uow.edu.au> <20010520163323.G18119@athlon.random> <15112.26868.5999.368209@pizda.ninka.net> <20010521034726.G30738@athlon.random> <15112.48708.639090.348990@pizda.ninka.net> <20010521105944.H30738@athlon.random> <15112.55709.565823.676709@pizda.ninka.net> <20010521115631.I30738@athlon.random> <15112.59880.127047.315855@pizda.ninka.net> <15112.60362.447922.780857@pizda.ninka.net>
In-Reply-To: <15112.60362.447922.780857@pizda.ninka.net>; from davem@redhat.com on Mon, May 21, 2001 at 03:19:54AM -0700
On Mon, May 21, 2001 at 03:19:54AM -0700, David S. Miller wrote:
> max bytes per bttv: max_gbuffers * max_gbufsize
> 64 * 0x208000 == 133.12MB
>
> 133.12MB * 8 PCI slots == ~1.06 GB
>
> Which is still only half of the total IOMMU space available per
> controller.
and it is the double of the iommu space that I am going to reserve for
pci dynamic mappings on the tsunami (right now it is 128Mbyte... and I'll
change to 512mbyte) also bttv is not doing that a large dma and by
default it only uses 2 buffers in the ring. bttv is not a good example
of what can really overflow the pci virtual address space in real life
(when I mentioned it it was only to point out it still uses
virt_to_bus), filling a pci bus with bttv cards sounds quite silly
anyways ;)
Andrea
next prev parent reply other threads:[~2001-05-21 11:03 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-18 17:46 alpha iommu fixes 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 9:02 ` 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 10:00 ` David S. Miller
2001-05-21 10:27 ` Andi Kleen
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 22:22 ` Jens Axboe
2001-05-21 10:02 ` Andrea Arcangeli
2001-05-21 10:17 ` Alan Cox
2001-05-21 9:56 ` Andrea Arcangeli
2001-05-21 10:11 ` David S. Miller
2001-05-21 10:19 ` David S. Miller
2001-05-21 11:00 ` Andrea Arcangeli [this message]
2001-05-21 11:04 ` David S. Miller
2001-05-21 11:27 ` Andrea Arcangeli
2001-05-21 12:16 ` Peter Rival
2001-05-21 13:55 ` Jonathan Lundell
2001-05-21 14:17 ` Ivan Kokshaysky
2001-05-21 15:47 ` Jonathan Lundell
2001-05-22 11:12 ` Chris Wedgwood
2001-05-22 17:51 ` Jonathan Lundell
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 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 21:08 ` Alan Cox
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 9:50 ` Gerd Knorr
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
2001-05-21 8:11 ` David S. Miller
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 8:09 ` David S. Miller
2001-05-21 8:09 ` Alan Cox
2001-05-21 8:06 ` Chris Wedgwood
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 1:03 ` 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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