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

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Message-ID: <19877.23529.745123.819112@pilspetsen.it.uu.se>
Date:	Wed, 13 Apr 2011 10:16:41 +0200
From:	Mikael Pettersson <mikpe@...uu.se>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Mikael Pettersson <mikpe@...uu.se>, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [regression] 2.6.39-rc[1-3] fail to boot on G5 PowerMac

Benjamin Herrenschmidt writes:
 > 
 > > > Finally I tried using g5_defconfig with 2.6.39-rc3.  First boot
 > > > it did get to /sbin/init, but udev init took much longer than
 > > > normal and threw errors.  After a warm reboot the same kernel
 > > > hung as usual, this time before framebuffer init.
 > > > 
 > > > 2.6.38 works just fine.
 > > 
 > > Hrm, that must be new, I remember testing something around -rc1 on a
 > > similar machine and it worked fine. I'll see if I can find something
 > > out.
 > 
 > 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.

/Mikael
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