linux-kernel - Re: [RFC] [PATCH] x86: Use ELF section to list CPU vendor specific code (Linux Tiny)

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Message-ID: <20080217181434.GX6006@elte.hu>
Date:	Sun, 17 Feb 2008 19:14:34 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, Matt Mackall <mpm@...enic.com>,
	Linux-tiny@...enic.com, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC] [PATCH] x86: Use ELF section to list CPU vendor specific
	code (Linux Tiny)


* Thomas Petazzoni <thomas.petazzoni@...e-electrons.com> wrote:

> Le Mon, 11 Feb 2008 16:54:30 -0800,
> "H. Peter Anvin" <hpa@...or.com> a écrit :
> 
> > b) would be my first choice, and yes, it would be a good thing to
> > have a generalized mechanism for this.  For the registrant, it's
> > pretty easy: just add a macro that adds a pointer to a named
> > section.  We then need a way to get the base address and length of
> > each such section in order to be able to execute each function in
> > sequence.
> 
> You'll find below a tentative patch that implements this. Tuple 
> (vendor, pointer to cpu_dev structure) are stored in a 
> x86cpuvendor.init section of the kernel, which is then read by the 
> generic CPU code in arch/x86/kernel/cpu/common.c to fill the 
> cpu_devs[] function.

thanks, i've picked this up into x86.git. It all looks much cleaner and 
much more maintainable now. Peter, any objections?

	Ingo
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