Re: CMA broken in next-20120926

From: Mel Gorman
Date: Fri Sep 28 2012 - 06:52:53 EST


On Fri, Sep 28, 2012 at 12:38:15PM +0200, Thierry Reding wrote:
> >
> >
> > I've been running a few tests and indeed this solves the obvious problem
> > that the coherent pool cannot be created at boot (which in turn caused
> > the ethernet adapter to fail on Tegra).
> >
> > However I've been working on the Tegra DRM driver, which uses CMA to
> > allocate large chunks of framebuffer memory and these are now failing.
> > I'll need to check if Minchan's patch solves that problem as well.
>
> Indeed, with Minchan's patch the DRM can allocate the framebuffer
> without a problem. Something else must be wrong then.
>

Can you check if Minchan's version 100% succeeds and my version 100%
fails or is it a case that sometimes CMA works and sometimes fails with
both versions?

I'll examine the patch of course and see what flaw is there this time.

--
Mel Gorman
SUSE Labs
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