linux-kernel - Re: [PATCH 2/5 -v2] acpi, apei, APEI supporting infrastructure

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Message-ID: <20091218181123.GA1470@ucw.cz>
Date:	Fri, 18 Dec 2009 19:11:23 +0100
From:	Pavel Machek <pavel@....cz>
To:	Huang Ying <ying.huang@...el.com>
Cc:	lenb@...nel.org,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Andi Kleen <ak@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/5 -v2] acpi, apei, APEI supporting infrastructure

On Thu 2009-12-10 15:16:57, Huang Ying wrote:
> APEI stands for ACPI Platform Error Interface, which allows to report
> errors (for example from the chipset) to the operating system. This
> improves NMI handling especially. In addition it supports error
> serialization and error injection.
> 
> For more information about APEI, please refer to ACPI Specification
> version 4.0, chapter 17.
> 
> This patch provides some common functions used by more than one APEI
> tables, mainly framework of interpreter for EINJ and ERST.
> 
> A machine readable language is defined for EINJ and ERST for OS to
> execute, and so to drive the firmware to fulfill the corresponding
> functions. The machine language for EINJ and ERST is compatible, so a
> common framework is defined for them.

Does this mean we'll now try to run acpi interrpretter from NMI
context?

I don't see how that can work; NMI is really special... 

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