Date: Tue, 15 Feb 2005 11:32:07 +0100
From: Ingo Molnar <mingo@elte.hu>
To: Dave Airlie <airlied@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>, Andrew Morton <akpm@osdl.org>,
       torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: SiS drm broken during 2.6.9-rc1-bk1
Message-ID: <20050215103207.GA19866@elte.hu>
References: <Pine.LNX.4.58.0502131124090.16528@skynet> <21d7e99705021400266bcbc0f2@mail.gmail.com>
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* Dave Airlie <airlied@gmail.com> wrote:

> > layout is the most likely patch to have broken things... I haven't
> > confirmed it is this particular patch yet, tomorrow I'll get some time to
> > do it ..
> > 
> 
> okay running client applications using 
> 
> setarch -L i386 glxgears
> 
> makes them work.. I'll start looking for a bug in the the SIS client
> side library..

yeah. Look for 2GB assumptions - e.g. assumptions that pointers cast to
integer will be positive values, such as:

	int i;

	i = malloc(somesize);
	if (i <= 0)
		handle_alloc_failure();

here with the topdown layout you'd get a malloc 'failure'.

	Ingo
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