Re: Use SMP kernel for Alpha (udeb) builds

On Sat, Dec 08, 2018 at 12:01:23PM +1300, Michael Cree wrote:
> On Fri, Dec 07, 2018 at 10:39:58PM +0100, Frank Scheiner wrote:
> > On 12/7/18 22:06, Michael Cree wrote:
> > > On Tue, Dec 04, 2018 at 05:38:51PM +0100, Frank Scheiner wrote:
> > > > As per [1] and our recent discussions the generic 4.x kernels seem to no
> > > > longer work on Alpha machines which also renders any installer images using
> > > > the generic 4.x kernels non-working.
> > > 
> > > Yes, that was noted some time ago.  A generic kernel does not boot
> > > since about 3.13.
> > 
> > Must be after 3.16 because a Debian 3.16 generic kernel still worked on my
> > PWS 500au back in 2017 or even earlier.
> 
> Confirmed.  3.16 generic boots but 3.18 generic does not on XP1000.
> 
> The reason I did not bisect at the time is that there were build errors
> in the kernel about 3.17 and 3.18 but I think I now know how to work
> around those so shall proceed to bisect.

Bisection leads to:

dca496451bddea9aa87b7510dc2eb413d1a19dfd is the first bad commit
commit dca496451bddea9aa87b7510dc2eb413d1a19dfd
Author: Tejun Heo <[email protected]>
Date:   Tue Sep 2 14:46:01 2014 -0400

    percpu: move common parts out of pcpu_[de]populate_chunk()
       

I have no idea why that commit is a problem...

Cheers,
Michael.