From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russ Anderson Date: Wed, 06 Apr 2005 19:28:09 +0000 Subject: Re: [patch] add MCA recovery on/off switch Message-Id: <200504061928.j36JS95l9140537@clink.americas.sgi.com> List-Id: References: <200504060327.j363REMp8976934@clink.americas.sgi.com> In-Reply-To: <200504060327.j363REMp8976934@clink.americas.sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Jesse Barnes wrote: > On Tuesday, April 5, 2005 8:32 pm, Randy.Dunlap wrote: > > Russ Anderson wrote: > > > Create /proc/sys/kernel/mca_recovery to turn on/off the MCA recovery > > > code. This allows the recovery code to be enabled or disabled without > > > having to reboot. > > > > Is there also a way to disable MCA recovery on the command line > > as a boot option? Using sysctl for it could be too late. > > Yeah, we added the 'nomca' option a while back to disable machine check > recovery altogether, but it prevents it from being enabled later on iirc. I've been convinced that the better way to turn the MCA recovery code on/off is to build it as a module and insmod/rmmod. That infrastructure already exists so there is no need for this patch. Sorry about the noise... -- Russ Anderson, OS RAS/Partitioning Project Lead SGI - Silicon Graphics Inc rja@sgi.com