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Subject: Re: 3.0-rc1: powerpc hangs at Kernel virtual memory layout
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Christian Kujau <lists@nerdbynature.de>
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Date: Wed, 01 Jun 2011 13:49:03 +1000
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Cc: Linus Torvalds <torvalds@linux-foundation.org>,
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On Tue, 2011-05-31 at 20:02 -0700, Christian Kujau wrote:
> (Cc'in Linus)
> 
> On Tue, 31 May 2011 at 17:48, Christian Kujau wrote:
> > In the meantime, "git bisect" behaves kinda weird, I don't know what went 
> > wrong here:
> > 
> >  $ git bisect start
> >  $ git bisect good         # Linux 2.6.39
> >  $ git bisect bad v3.0-rc1 # Linux 3.0-rc1
> >  $ git bisect bad          # c44dead70a...
> >  $ git bisect bad          # d93515611b..
> > 
> > ...yet the ./Makefile shows[0] that I'm already way behind: 2.6.39-rc2. 
> > Maybe "git bisect" got confused with that whole 2.6.x -> 3.0 renaming?
> 
> Hm, I tried again, from a clean v3.0-rc1 (git reset --hard), but after the 
> 2nd "git bad" I'm at 2.6.39-rc2 again - while I /should/ be somwhere 
> inbetween v2.6.39..v3.0-rc1, right?

Kernel version is totally irrelevant when bisecting. You are not walking
through a linear series of patches but a complex tree of merges which
might have forked off different versions in the first place.

Cheers,
Ben.