From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Gerhard Pircher <gerhard_pircher@gmx.net>
Cc: airlied@linux.ie, linuxppc-dev@ozlabs.org,
dri-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [BUG/RFC/PATCH] drm: Fix for non-coherent DMA PowerPC
Date: Tue, 04 Mar 2008 07:44:11 +1100 [thread overview]
Message-ID: <1204577051.21545.12.camel@pasglop> (raw)
In-Reply-To: <20080303195117.7040@gmx.net>
On Mon, 2008-03-03 at 20:51 +0100, Gerhard Pircher wrote:
> > Remove the GFP_HIGHMEM from the above. It looks like our cache
> > flushing isn't going to work for highmem, it would need some
> > kmap's for that.
> Yes, it looks like this was the problem. No kernel oops anymore.
> The machine locks up anyway (which is a well known hardware problem).
> It doesn't lock up with CPPIOMode=true, but probably only because the
> initialization of DRI fails with "BAD cp_mode (f0000000)!".
Damn, I wonder why you insist trying to make that machine work :-) The
hardware is just totally busted.
Ben.
next prev parent reply other threads:[~2008-03-03 20:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-25 23:41 [RFC/PATCH] drm: Fix for non-coherent DMA PowerPC Benjamin Herrenschmidt
2008-03-02 11:05 ` [BUG/RFC/PATCH] " Gerhard Pircher
2008-03-02 20:47 ` Benjamin Herrenschmidt
2008-03-02 22:30 ` Gerhard Pircher
2008-03-02 22:54 ` Benjamin Herrenschmidt
2008-03-02 22:56 ` Benjamin Herrenschmidt
2008-03-03 19:51 ` Gerhard Pircher
2008-03-03 20:44 ` Benjamin Herrenschmidt [this message]
2008-03-03 21:37 ` Gerhard Pircher
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