On Thu, 4 Mar 2010, Linus Torvalds wrote:
>
> I see the commit that does this was very aware of it:
>
> commit a1606a9596e54da90ad6209071b357a4c1b0fa82
> Author: Ben Skeggs <[email protected]>
> Date: Fri Feb 12 10:27:35 2010 +1000
>
> drm/nouveau: new gem pushbuf interface, bump to 0.0.16
>
> This commit breaks the userspace interface, and requires a new
> libdrm for
> nouveau to operate again.
Quite frankly, the more I look at that commit, the worse it looks.
That commit seems to _on_purpose_ try to avoid at all cost being
compatible. It not only removes some old entry-points, it literally
re-numbers all the ioctl numbers as it does so, apparently entirely in
order to just make it difficult to have some libdrm that can handle both
versions.
This all means that I literally cannot test the current -git tree.
I suspect I have to revert it.
Or is there a version of X that can handle _both_ the 0.0.15 and the
0.0.16 interfaces?
That's absolutely required - so that it's not a flag-day any more to
upgrade the kernel, and so that people (including very much me) can test
and bisect other things without having to worry about basic functionality
coming and going as you bisect things,
Linus
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