Subject: Re: [RFC] [PATCH] x86: Use ELF section to list CPU vendor specific
	code (Linux Tiny)
From: Matt Mackall <mpm@selenic.com>
To: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Linux-tiny@selenic.com,
       Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
       Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
       michael@free-electrons.com
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Date: Mon, 25 Feb 2008 09:03:12 -0800
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On Mon, 2008-02-25 at 09:29 +0100, Thomas Petazzoni wrote:
> Le Sat, 23 Feb 2008 10:43:37 +0800,
> Matt Mackall <mpm@selenic.com> a écrit :
> 
> > This is not quite what Peter and I were thinking of, I think. It's not
> > at all generic. How about a section that simply contains a set of
> > function pointers, a macro to add things to that section, and a
> > function that calls all the pointers in that section. Eg:
> > 
> > CALLBACK_SECTION(init_cpu_amd, "cpuvendor.init");
> > invoke_callback_section("cpuvendor.init");
> > 
> > ..which would give us a generic facility we could use in various
> > places.
> 
> I see. Probably doable. How would it work in the LD script file ? Your
> mechanism allows to specify any section name, but AFAIK, the sections
> must be explicitly listed in the kernel LD script in order to be
> included in the final kernel image. Am I missing something ?

I can't see any way to avoid it, but we can leave it to future
generations to come up with something more clever.

-- 
Mathematics is the supreme nostalgia of our time.

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