Re: [regression] 2.6.39-rc[1-3] fail to boot on G5 PowerMac

From: Benjamin Herrenschmidt
Date: Wed Apr 13 2011 - 04:58:39 EST


On Wed, 2011-04-13 at 10:16 +0200, Mikael Pettersson wrote:
> > Ok so on a PowerMac7,3 here (dual 2.5Ghz and mostly same HW or at least
> > very similar) I can't reproduce your problem with a g5_defconfig.
> >
> > Your config doesn't work well for me (I don't do modules, I netboot),
> > but after adding a few things to it, it seems to work fine as well. I
> > added radeonfb and the radeon DRM (not KMS) and I added eventfd, timerfd
> > and input events.
> >
> > So I'm afraid I'm going to need you to bisect that one to find out what
> > exact change caused the breakage for you.
>
> Thanks for checking. I'll try a bisect later today.

Actually I do get a crash in X later on... something in the radeon DRM
interrupt code is getting what looks like a NULL dereference. I'll try
to dig that one later on. I don't know if it's related to your problem
at all though.

Cheers,
Ben.


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