linux-kernel - Re: [RFC 1/6] x86, NMI, Add symbol definition for NMI magic constants

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Message-ID: <20100913013041.GH13563@erda.amd.com>
Date:	Mon, 13 Sep 2010 03:30:41 +0200
From:	Robert Richter <robert.richter@....com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Huang Ying <ying.huang@...el.com>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC 1/6] x86, NMI, Add symbol definition for NMI magic
 constants

On 11.09.10 04:50:01, Andi Kleen wrote:
> On Fri, 10 Sep 2010 22:37:07 +0200
> Peter Zijlstra <peterz@...radead.org> wrote:
> 
> > On Fri, 2010-09-10 at 10:51 +0800, Huang Ying wrote:
> > > +       return inb(NMI_REASON_PORT);
> > 
> > I've always wondered, where is this magic stuff documented?
> 
> In the datasheet of the chipset. But sometimes you need
> to dig deeper to get a global picture including all chipsets.

It is also here:

 http://support.amd.com/us/Embedded_TechDocs/43009_sb7xx_rrg_pub_1.00.pdf
 2.3.3.1.1 IO-Mapped Control Registers

-Robert

-- 
Advanced Micro Devices, Inc.
Operating System Research Center

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