From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tim Deegan Subject: Re: [PATCH] x86/mm/paging: Prevent the guest from faulting on the same gfn when dying Date: Thu, 15 Mar 2012 11:32:44 +0000 Message-ID: <20120315113244.GE4798@ocelot.phlegethon.org> References: <88584a17d2da567cd187.1331566963@xdev.gridcentric.ca> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <88584a17d2da567cd187.1331566963@xdev.gridcentric.ca> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Andres Lagar-Cavilla Cc: andres@gridcentric.ca, adin@gridcentric.ca, olaf@aepfle.de, xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org At 11:42 -0400 on 12 Mar (1331552563), Andres Lagar-Cavilla wrote: > A crashing guest due to paging may hit an "endless" loop faulting repeatedly on > the current paged-out gfn, until the toolstack comes around to killing the > domain. > > Unfortunately domain_crash at this point may not pause the vcpu due to the > shutting_down flag, so we pause it explicitly when detecting the condition. Applied, thanks. Tim.