From: Jon Smirl <jonsmirl@gmail.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linux Fbdev development list
<linux-fbdev-devel@lists.sourceforge.net>,
Jon Smirl <jonsmirl@yahoo.com>,
dri-devel@lists.sourceforge.net, xorg@lists.freedesktop.org
Subject: Re: [Linux-fbdev-devel] Re: radeon, apertures & memory mapping
Date: Sun, 13 Mar 2005 17:17:04 -0500 [thread overview]
Message-ID: <9e47339105031314175fdd4e9e@mail.gmail.com> (raw)
In-Reply-To: <1110750766.14684.160.camel@gaston>
On Mon, 14 Mar 2005 08:52:46 +1100, Benjamin Herrenschmidt
<benh@kernel.crashing.org> wrote:
>
> > The best model would be to chuck the AGP/PCI Express interface on the
> > board and have a hyperchannel instead. Hyperchannel provides full
> > cache consistency without all of these flushing problems. The GPU
> > really is another specialized CPU, give it a CPU class memory
> > interface.
>
> You mean HyperTransport ? Well, PCI Express isn't far from that
> neither...
Yes, HyperTransport. That's what I get for writing email while the
babies are crying.
Does PCI Express support a full cache coherency protocol like
HyperTransport? So if the GPU touches a page of system memory, the
system memory will get flushed out of the CPU cache? In that case we
don't need to mark shared GPU/CPU memory as non-cachable.
>
> Ben.
>
>
--
Jon Smirl
jonsmirl@gmail.com
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next prev parent reply other threads:[~2005-03-13 22:17 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-13 1:35 radeon, apertures & memory mapping Benjamin Herrenschmidt
2005-03-13 3:22 ` Jon Smirl
2005-03-13 6:43 ` Benjamin Herrenschmidt
2005-03-13 16:22 ` Jon Smirl
2005-03-14 4:28 ` [Linux-fbdev-devel] " Michel Dänzer
2005-03-14 7:12 ` Benjamin Herrenschmidt
2005-03-14 16:20 ` Michel Dänzer
2005-03-14 21:52 ` Benjamin Herrenschmidt
2005-03-14 22:12 ` Michel Dänzer
2005-03-14 22:37 ` FB model basic issues (WAS: radeon, apertures & memory mapping) Benjamin Herrenschmidt
2005-03-15 4:59 ` Michel Dänzer
2005-03-15 5:14 ` Jon Smirl
2005-03-15 6:01 ` Ville Syrjälä
2005-03-15 6:59 ` Benjamin Herrenschmidt
2005-03-15 14:00 ` Ville Syrjälä
2005-03-15 14:29 ` Jon Smirl
2005-03-15 17:25 ` Jan Gukelberger
2005-03-15 23:34 ` Benjamin Herrenschmidt
2005-03-15 8:51 ` Geert Uytterhoeven
2005-03-15 13:36 ` [Linux-fbdev-devel] " Ville Syrjälä
2005-03-15 23:33 ` Benjamin Herrenschmidt
2005-03-15 23:37 ` Antonino A. Daplas
2005-03-15 23:50 ` [Linux-fbdev-devel] " Benjamin Herrenschmidt
2005-03-16 1:47 ` Ville Syrjälä
2005-03-16 1:51 ` Benjamin Herrenschmidt
2005-03-16 19:51 ` Ville Syrjälä
2005-03-16 21:00 ` Michel Dänzer
2005-03-16 21:07 ` Ville Syrjälä
2005-03-16 23:28 ` Benjamin Herrenschmidt
2005-03-16 23:53 ` Michel Dänzer
2005-03-16 23:25 ` [Linux-fbdev-devel] " Benjamin Herrenschmidt
[not found] ` <1110929582.25201.34.camel@gaston>
2005-03-16 5:21 ` Michel Dänzer
2005-03-16 6:31 ` Benjamin Herrenschmidt
2005-03-16 14:09 ` Ville Syrjälä
2005-03-16 16:48 ` Adam Jackson
2005-03-16 23:20 ` Benjamin Herrenschmidt
2005-03-15 11:30 ` Roland Scheidegger
2005-03-15 13:27 ` Ville Syrjälä
2005-03-15 17:17 ` Michel Dänzer
2005-03-16 3:09 ` Benjamin Herrenschmidt
2005-03-16 20:08 ` Ville Syrjälä
2005-03-16 20:42 ` [Linux-fbdev-devel] " Michel Dänzer
2005-03-16 23:26 ` Benjamin Herrenschmidt
2005-03-16 23:35 ` Jon Smirl
2005-03-17 0:06 ` [Linux-fbdev-devel] " Benjamin Herrenschmidt
2005-03-16 20:58 ` Alex Deucher
2005-03-16 21:08 ` Ville Syrjälä
2005-03-16 21:17 ` Alex Deucher
2005-03-16 23:30 ` Benjamin Herrenschmidt
2005-03-17 0:47 ` Ville Syrjälä
2005-03-17 1:12 ` Benjamin Herrenschmidt
2005-03-17 1:25 ` Ville Syrjälä
2005-03-17 2:00 ` Benjamin Herrenschmidt
2005-03-17 9:08 ` Geert Uytterhoeven
2005-03-17 19:54 ` [Linux-fbdev-devel] " Ville Syrjälä
2005-03-15 22:44 ` Benjamin Herrenschmidt
2005-03-15 23:05 ` Ville Syrjälä
2005-03-15 23:49 ` Benjamin Herrenschmidt
2005-03-16 20:55 ` Ville Syrjälä
2005-03-16 23:27 ` Benjamin Herrenschmidt
2005-03-17 0:14 ` Ville Syrjälä
2005-03-17 0:28 ` Benjamin Herrenschmidt
2005-03-15 6:45 ` Benjamin Herrenschmidt
2005-03-15 5:30 ` Jon Smirl
2005-03-15 6:58 ` Benjamin Herrenschmidt
2005-03-15 21:58 ` Ian Romanick
2005-03-13 3:55 ` radeon, apertures & memory mapping Vladimir Dergachev
2005-03-13 6:44 ` Benjamin Herrenschmidt
2005-03-13 8:22 ` Ville Syrjälä
2005-03-13 9:20 ` Benjamin Herrenschmidt
2005-03-13 10:39 ` Ville Syrjälä
2005-03-13 12:04 ` Benjamin Herrenschmidt
2005-03-13 16:19 ` Jon Smirl
2005-03-13 17:47 ` Ville Syrjälä
2005-03-13 17:56 ` [Linux-fbdev-devel] " Jon Smirl
2005-03-13 21:52 ` Benjamin Herrenschmidt
2005-03-13 22:17 ` Jon Smirl [this message]
2005-03-13 22:41 ` Benjamin Herrenschmidt
2005-03-13 21:51 ` Benjamin Herrenschmidt
2005-03-13 21:49 ` Benjamin Herrenschmidt
2005-03-13 22:10 ` Jon Smirl
2005-03-13 22:20 ` Benjamin Herrenschmidt
2005-03-13 23:00 ` Jon Smirl
2005-03-13 23:11 ` Benjamin Herrenschmidt
2005-03-13 23:27 ` Ville Syrjälä
2005-03-13 23:48 ` Benjamin Herrenschmidt
2005-03-14 0:08 ` Ville Syrjälä
2005-03-14 0:10 ` Benjamin Herrenschmidt
2005-03-14 0:25 ` Jon Smirl
2005-03-14 0:39 ` Ville Syrjälä
2005-03-14 1:02 ` Benjamin Herrenschmidt
2005-03-14 0:54 ` Benjamin Herrenschmidt
2005-03-14 0:41 ` Paul Mackerras
2005-03-14 0:56 ` Ville Syrjälä
2005-03-14 1:05 ` [Linux-fbdev-devel] " Benjamin Herrenschmidt
2005-03-14 1:47 ` Jon Smirl
2005-03-14 3:59 ` Benjamin Herrenschmidt
2005-03-14 4:07 ` Paul Mackerras
2005-03-14 4:40 ` Jon Smirl
2005-03-14 5:09 ` [Linux-fbdev-devel] " Benjamin Herrenschmidt
2005-03-14 16:30 ` Soeren Sandmann
2005-03-14 16:40 ` Ville Syrjälä
2005-03-14 21:54 ` Benjamin Herrenschmidt
2005-03-14 16:16 ` Ville Syrjälä
2005-03-14 21:27 ` Donnie Berkholz
2005-03-14 21:51 ` Benjamin Herrenschmidt
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