Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754633AbYJGLWL (ORCPT ); Tue, 7 Oct 2008 07:22:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752884AbYJGLV7 (ORCPT ); Tue, 7 Oct 2008 07:21:59 -0400 Received: from ns1.suse.de ([195.135.220.2]:44098 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752832AbYJGLV6 (ORCPT ); Tue, 7 Oct 2008 07:21:58 -0400 From: Bernhard Walle To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, Bernhard Walle Subject: [PATCH] Document panic_on_unrecovered_nmi sysctl Date: Tue, 7 Oct 2008 13:21:56 +0200 Message-Id: <1223378516-24304-1-git-send-email-bwalle@suse.de> X-Mailer: git-send-email 1.6.0.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1555 Lines: 41 This adds "panic_on_unrecovered_nmi" sysctl to Documentation/filesystems/proc.txt. The text is mainly taken from http://readlist.com/lists/vger.kernel.org/linux-kernel/43/217998.html. Signed-off-by: Bernhard Walle --- Documentation/filesystems/proc.txt | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index f566ad9..d2f77d9 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -1322,6 +1322,18 @@ debugging information is displayed on console. NMI switch that most IA32 servers have fires unknown NMI up, for example. If a system hangs up, try pressing the NMI switch. +panic_on_unrecovered_nmi +------------------------ + +The default Linux behaviour on an NMI of either memory or unknown is to continue +operation. For many environments such as scientific computing it is preferable +that the box is taken out and the error dealt with than an uncorrected +parity/ECC error get propogated. + +A small number of systems do generate NMI's for bizarre random reasons such as +power management so the default is off. That sysctl works like the existing +panic controls already in that directory. + nmi_watchdog ------------ -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/