Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754224AbbKXJzj (ORCPT ); Tue, 24 Nov 2015 04:55:39 -0500 Received: from smtp.citrix.com ([66.165.176.89]:35910 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753674AbbKXJzd (ORCPT ); Tue, 24 Nov 2015 04:55:33 -0500 X-IronPort-AV: E=Sophos;i="5.20,338,1444694400"; d="scan'208";a="314361896" Subject: Re: [Xen-devel] crash tool - problem with new Xen linear virtual mapped sparse p2m list To: Jan Beulich , Daniel Kiper , Juergen Gross References: <20151123201830.GN4768@olila.local.net-space.pl> <565409DA.90908@suse.com> <565434F102000078000B8424@prv-mh.provo.novell.com> CC: , , , , , , , , David Mair , , , From: Malcolm Crossley Message-ID: <56543412.7090104@citrix.com> Date: Tue, 24 Nov 2015 09:55:30 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <565434F102000078000B8424@prv-mh.provo.novell.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-DLP: MIA1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1160 Lines: 31 On 24/11/15 08:59, Jan Beulich wrote: >>>> On 24.11.15 at 07:55, wrote: >> What about: >> >> 4) Instead of relying on the kernel maintained p2m list for m2p >> conversion use the hypervisor maintained m2p list which should be >> available in the dump as well. This is the way the alive kernel is >> working, so mimic it during crash dump analysis. > > I fully agree; I have to admit that looking at the p2m when doing page > table walks for a PV Dom0 (having all machine addresses in page table > entries) seems kind of backwards. (But I say this knowing nothing > about the tool.) > I don't think we can reliably use the m2p for PV domains because PV domains don't always issue a m2p update hypercall when they change their p2m mapping. Malcolm > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/