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Message-ID: <20110331080634.GA18022@elte.hu>
Date: Thu, 31 Mar 2011 10:06:34 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Nicolas Pitre <nico@...xnic.net>
Cc: david@...g.hm, Linus Torvalds <torvalds@...ux-foundation.org>,
Arnd Bergmann <arnd@...db.de>,
Russell King - ARM Linux <linux@....linux.org.uk>,
Tony Lindgren <tony@...mide.com>,
David Brown <davidb@...eaurora.org>,
lkml <linux-kernel@...r.kernel.org>,
linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
Catalin Marinas <catalin.marinas@....com>,
"H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [GIT PULL] omap changes for v2.6.39 merge window
* Nicolas Pitre <nico@...xnic.net> wrote:
> On Wed, 30 Mar 2011, david@...g.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
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