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Date: Tue, 17 Jul 2012 10:50:16 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Jon Masters <jonathan@jonmasters.org>, Pavel Machek <pavel@ucw.cz>,
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        Linus Torvalds <torvalds@linux-foundation.org>,
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        Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 00/36] AArch64 Linux kernel port
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> Right, I would say that with any CPU core more powerful than this one
> or with more than a few of these, you will also have trouble coming
> up with workloads that really require the CPU performance but don't
> also require a 64 bit virtual address space in either user space
> or kernel.

There are lots of them - soft radio for example can burn near infinite
CPU resource depending upon the amount you are fishing out, but its pure
throughput.

Alan