2.6.15-mm4 failure on power5

[Dave C Boutcher]

On Mon, Jan 16, 2006 at 09:37:48AM -0600, Serge E. Hallyn wrote:
> Quoting Michael Ellerman (michael at ellerman.id.au):
> > On Mon, 16 Jan 2006 18:05, Andrew Morton wrote:
> > > "Serge E. Hallyn" <serue at us.ibm.com> wrote:
> > > > On my power5 partition, 2.6.15-mm4 hangs on boot
> 
> boot: quicktest
> Please wait, loading kernel...

...

> Page orders: linear mapping = 24, others = 12
>  -> smp_release_cpus()
>  <- smp_release_cpus()
>  <- setup_system()
> 
> So setup_system() at least finishes, though I don't see the
> printk's at the bottom of that function.

2.6.15-mm4 won't boot on my power5 either.  I tracked it down to the
following mutex patch from Ingo: kernel-kernel-cpuc-to-mutexes.patch

If I revert just that patch, mm4 boots fine.  Its really not obvious to
me at all why that patch is breaking things though...

-- 
Dave Boutcher