Re: [RFC] [PATCH] x86: Use ELF section to list CPU vendor specificcode (Linux Tiny)

[Thomas Petazzoni]

Le Sat, 23 Feb 2008 10:43:37 +0800,
Matt Mackall <mpm@xxxxxxxxxxx> a Ãcrit :

> 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 ?

Sincerly,

Thomas
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Thomas Petazzoni, Free Electrons
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