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SubjectRe: [PATCH] DRM / i915: Fix resume regression on MSI Wind U100 w/o KMS


On Sat, 9 Jan 2010, Jerome Glisse wrote:

> On Fri, Jan 08, 2010 at 06:50:41PM -0800, Jesse Barnes wrote:
> >
> > Linus, can we ever drop those old paths? Maybe after the new bits have
> > been around for awhile? Users of really old userspace stacks would
> > lose 3D support, but they'd still have 2D, so it wouldn't be a complete
> > break. The non-KMS paths sometimes break like this anyway without us
> > noticing (especially some of the weirder 3D paths)...
> >
> > Just thinking out loud, we could really kill a lot of really bad code...
>
> I among those who would love such things to happen :)

I don't want to drop it _yet_, but "ever"? Sure. When people are sure that
KMS actually handles all the cases that old X does (maybe that's true
now), and we've had more than just a couple of kernel releases of _stable_
Intel KMS, I suspect we can start thinking about "ok, nobody seriously
uses 3D on Intel integrated graphics _and_ updates the kernel".

The fact that they'd still have a working X setup would make it generally
much more palatable, I think.

But we definitely need more than just a couple of kernel releases. So
we're talking timescales of "more than a year of stable code". Whether
that is "six months from now" or "two years from now", I can't judge.

And people can try to convince me to be more or less aggressive about it,
so take the above as a more of a personal opinion that is open to
change than anything definite and final.

Linus


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