From mboxrd@z Thu Jan 1 00:00:00 1970 From: Scott Garron Subject: Re: BUG: unable to handle kernel paging request - balloon_init - xen-4.1.0 - 2.6.32.39 Date: Fri, 29 Apr 2011 19:08:29 -0400 Message-ID: <4DBB44ED.2020701@sce.pridelands.org> References: <4DB60C04.6050802@sce.pridelands.org> <20110426031545.GB20779@dumpdata.com> <4DB6522A.9000304@sce.pridelands.org> <20110427200937.GA19853@dumpdata.com> <4DB8AAA6.4050808@sce.pridelands.org> <20110428183019.GA9852@dumpdata.com 4DBA1EA4.5010004@sce.pridelands.org> <4ebbb8ac-77a5-4525-b69e-273c177c05e2@default> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4ebbb8ac-77a5-4525-b69e-273c177c05e2@default> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Dan Magenheimer Cc: Jeremy Fitzhardinge , xen-devel@lists.xensource.com, Konrad Wilk List-Id: xen-devel@lists.xenproject.org On 04/29/2011 03:38 PM, Dan Magenheimer wrote: > Since you are using dom0_mem, there really should be no reason why > the balloon driver needs to get initialized. For the balloon driver > to work properly, it needs a correct E820 map and there have been > recent upstream changes in the balloon driver involving E820. If we > assume that your E820 map is indeed broken, the easiest fix for your > machine might be just to modify balloon_init in dom0 to immediately > fail (and return -ENODEV). Returning -ENODEV at the beginning of balloon_init() did allow the machine to boot, but something is definitely still amiss: Trying to start any domUs yields: simba@hailstorm:~$ sudo xm create test.cfg Using config file "/etc/xen/test.cfg". Error: Failed to query current memory allocation of dom0. Oddly enough, xencommons and xend started and xm list and xm info show everything correctly. And this is just bizarre... simba@hailstorm:~$ free total used free shared buffers cached Mem: 552 18014398509158460 324076 0 11428 34656 -/+ buffers/cache: 18014398509112376 370160 Swap: 0 0 0 I just tried grabbing the most recent BIOS revision from Tyan for this motherboard (was running 2882_306, flashed it to 2882_309). Same results. -- Scott Garron