From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 817186B005C for ; Fri, 12 Jun 2009 13:54:21 -0400 (EDT) Date: Fri, 12 Jun 2009 13:55:18 -0400 From: Theodore Tso Subject: Re: [PATCH 1/5] HWPOISON: define VM_FAULT_HWPOISON to 0 when feature is disabled Message-ID: <20090612175518.GE6417@mit.edu> References: <20090611142239.192891591@intel.com> <20090611144430.414445947@intel.com> <20090612112258.GA14123@elte.hu> <20090612125741.GA6140@localhost> <20090612131754.GA32105@elte.hu> <20090612133352.GC6751@localhost> <20090612153620.GB23483@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090612153620.GB23483@elte.hu> Sender: owner-linux-mm@kvack.org To: Ingo Molnar Cc: Wu Fengguang , Thomas Gleixner , "H. Peter Anvin" , Peter Zijlstra , Andrew Morton , LKML , Nick Piggin , Hugh Dickins , Andi Kleen , "riel@redhat.com" , "chris.mason@oracle.com" , "linux-mm@kvack.org" , Linus Torvalds List-ID: On Fri, Jun 12, 2009 at 05:36:20PM +0200, Ingo Molnar wrote: > > The data corruption has not caused real hurt yet, and can be > > isolated to prevent future accesses. So it makes sense to just > > kill the impacted process(es). > > Dunno, this just looks like a license to allow more crappy hardware, > hm? I'm all for _logging_ errors, but hwpoison is not about that: it > is about allowing the hardware to limp along in 'enterprise' setups, > with a (false looking) 'guarantee' that everything is fine. This should be tunable; in some cases, logging it is the right thing to do; I imagine that in the case of the desktop OS, the user would appreciate being given *some* chance to save the document he or she has spent the past hour working on before the system goes down "hard and fast". In other cases, the sysadmin is using a high-availability setup in an enterprise deployment, and there he or she would want the system to immediately shutdown so the hot standby can take over. - Ted -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org