Re: 2.6.12-rc2-mm1

[Christoph Hellwig]

On Tue, Apr 05, 2005 at 07:44:38PM +1000, Paul Mackerras wrote:
> Christoph Hellwig writes:
> 
> >  - the magic CONFIG_COMPAT changes for SHM handles should only be done when
> >    a module is set.  CONFIG_COMPAT is set for mostly 64bit systems that can
> >    run 32bit code and drm shouldn't behave differently just because we can
> >    run 32bit code.
> 
> Yes it should - we can have a 64-bit X server and a 32-bit DRI
> client.  In this case the server will allocate a _DRM_SHM area and
> pass the handle to the client, which will then try to mmap the area.
> If we give a 64-bit handle to the server the client won't be able to
> access the area.

Please make it a module option so it doesn't regress everyone for your
specific needs.

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