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Date: Tue, 12 May 2009 10:21:05 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Ingo Molnar <mingo@elte.hu>
Cc: Arnd Bergmann <arnd@arndb.de>, x86@kernel.org,
       linux-kernel@vger.kernel.org,
       Remis Lima Baima <remis.developer@googlemail.com>
Subject: Re: [PATCH v2] x86: fix ktermios-termio conversion
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> hm, on x86 you could use get_user_try / get_user_ex() / 
> get_user_catch() approach to linearize the dependencies and reduce 
> register pressure.

It used *once*, in a path that is never executed except by some ancient
binaries. It isn't worth the effort.