linux-kernel - Re: x86: Why have __copy_from_user_ll

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Date:	Fri, 1 Feb 2008 10:50:34 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	Andrew Morton <akpm@...l.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: x86: Why have __copy_from_user_ll_nocache* been exported?


* Ingo Molnar <mingo@...e.hu> wrote:

> > And that from a person who on the other hand wants to introduce (and 
> > tries to force on other people) deprecation periods for unused 
> > EXPORT_SYMBOL's.
> 
> why does this bother you? The API makes total sense. This is a 
> completely sensible API (with a full implementation) to use 
> non-temporal copies. I mean, if this was some legacy API that nobody 
> uses anymore i'd agree, but this is about the ability to access 
> user-space memory via SSE2+ non-temporal stores.

Adrian, you have still not answered the (obvious) question: why do such 
currently-unused exports bother you?

	Ingo
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