Re: Required backwards support level?

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On Sun, Apr 6, 2014 at 8:26 AM, Lauri Kasanen <cand@xxxxxxx> wrote:
> Hi,
>
> Obviously old userspace + new kernel combo needs to be supported. But
> I'm not so sure about a mixed case, does old userspace + new userspace
> need to be supported to run at the same time?
>
> For example, a new 64-bit mesa+libdrm and a 32-bit old set, both
> running apps at the same time.
>
> Or is it acceptable to assume that once a new userspace has been run,
> an old one won't be run for this boot?

old 32b userspace in a chroot, for example?

Maybe you can give a better description of what you are wanting to do?
 Could you decide on 32b vs 64b userspace on a per 'struct drm_file'
basis (ie. each time /dev/dri/cardN is opened)?

BR,
-R

> - Lauri
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