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Bug#721191: linux: patch for parisc/hppa architecture



On Sun, 2013-09-08 at 16:19 +0200, Bastian Blank wrote:
> On Wed, Aug 28, 2013 at 11:53:58PM +0200, Helge Deller wrote:
> > On 08/28/2013 11:35 PM, Bastian Blank wrote:
> > > Looks reasonable. But please send further changes to remove the
> > > non-smp kernels.
> > I can do that. Do you have some background on this request for me?
> > Is it policy that you only want to gave SMP-kernels?
> 
> We like to lower the image count.  As long as there are no pressing
> needs, we like to only have one kernel variant.
> 
> > (Actually I had a similiar idea to use kernel alternatives on parisc too
> > to avoid different UP/SMP kernels).
> 
> Are there any UP machines since PA-8800?
> 
> > >> PPPS: CONFIG_MLONGCALLS=y is necessary since the built kernel
> > >> otherwise gets too big so that jumps can't be reached.
> > > Are there drawbacks?
> > Yes, it might be a little bit slower since the jumps now have one
> > CPU instruction more. But there is no other way to solve it unless
> > we drop some unneccessary kernel options for parisc. 
> 
> How much space would be needed?  Some Arm configs disable SELinux for
> example to save space.

Right, debian/config/armel/config-reduced may be a useful list of things
that could potentially be disabled.

It's also worth checking modules.builtin for things that could possibly
be modularised.  (Not everything listed there will actually work
properly as a module though.)

Ben.

-- 
Ben Hutchings
I haven't lost my mind; it's backed up on tape somewhere.

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