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

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Message-ID: <47B88F05.10409@zytor.com>
Date:	Sun, 17 Feb 2008 11:46:13 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.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)

Ingo Molnar wrote:
> * 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?
> 

Looks great to me.

	-hpa
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