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Date: Thu, 31 Mar 2011 10:06:34 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Nicolas Pitre <nico@fluxnic.net>
Cc: david@lang.hm, Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: [GIT PULL] omap changes for v2.6.39 merge window
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* Nicolas Pitre <nico@fluxnic.net> wrote:

> On Wed, 30 Mar 2011, david@lang.hm wrote:
> 
> > back in the early days of the PCs, different systems from different vendors
> > had different bus types, peripherals at different addresses, etc. that didn't
> > make all of those vendors systems different architectures, instead those
> > things were varients of the x86 architecture.
> 
> Most of them didn't survive.  That really helps.

That's not the point, 99% of the current ARM boards will not 'survive' either, 
10-20 years down the road.

I think you missed David's main point: life inevitably went on and few of the 
old x86 hardware 'survived' physically, but past hardware versions have not 
littered the kernel source with half a million lines of source code in the 
process ...

Having strong, effective platform abstractions inside the kernel really helps 
even if the hardware space itself is inevitably fragmented: both powerpc and 
x86 has shown that. Until you realize and appreciate that you really have not 
understood the problem i think.

Thanks,

	Ingo