From mboxrd@z Thu Jan 1 00:00:00 1970 From: sven Subject: Re: Xen dom0 crash: "d0:v0: unhandled page fault (ec=0000)" Date: Tue, 19 Oct 2010 21:05:41 +0200 Message-ID: <4CBDEC05.10104@infinitumb.de> References: <19629.39326.337589.71778@wylie.me.uk> <1287498599.12843.2111.camel@qabil.uk.xensource.com> <4CBDB229.3030501@infinitumb.de> <1287503143.12843.2191.camel@qabil.uk.xensource.com> <4CBDDD02.3000807@infinitumb.de> <1287512451.12843.2445.camel@qabil.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1287512451.12843.2445.camel@qabil.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Gianni Tedesco Cc: "Alan J. Wylie" , Jeremy Fitzhardinge , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On 10/19/2010 08:20 PM, Gianni Tedesco wrote: >> Like disabling "Optimize for size" in the config? >> Just tried, didn't make any difference. > > Well, I mean I still have"Optimize for size" disabled and it's still > broken. Ok. I meant - regardless how it is set, it fails :) > I am doing a little more digging, what I have found is that > xen_build_dynamic_phys_to_machine() is building a valid looking p2m > table, but later on we get some calls to get_phys_to_machine() which are > outside the range of max_pfn (which Jeremy tells me is acceptable) but > at that point max_pfn is zero. I have to admit that I do not understand (due to lack of any knowledge about the internals) what these functions are for.. > In other words, it looks like some important data structures are getting > over-written with nonsense. .. but this (even) I do understand. > I will have a think and get back to debugging this when I have a bit > more time. > > In the mean time, can you provide me with some info about the machines > you're reproing this on? Mines a brand new dell power-edge xeon thing. Sure, I'll do all I can to help pest-controlling it. I'm already at home, off mind it is: #1 Athlon X2 5600+ on Asus AM2-VM [NForce 430 Chipset] (I'm not 100% sure about the Mainboard right now) - no addon-cards 4x1G RAM, also tried with 1x1G #2 Core i7 920 on Asus P6T-Deluxe [Intel X58 Chipset] - a (prehistoric) PCI VGA-Card 3x2G RAM So you think the problem only affects specific platforms? Regards, Sven >> p.s.: someone let me know if i should keep everybody on cc! > > Please, that's the convention! Oh. This isn't nntp, isn't it? So, Alan & Jeremy, blame Gianni :-)