From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Hering Subject: Re: error in xen/arch/x86/mm.c:get_page during migration Date: Fri, 22 Feb 2013 21:07:47 +0100 Message-ID: <20130222200746.GA26772@aepfle.de> References: <20130221144841.GB23819@aepfle.de> <51265C7B02000078000C0167@nat28.tlf.novell.com> <20130221173115.GA13045@aepfle.de> <5127882D02000078000C068D@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <5127882D02000078000C068D@nat28.tlf.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jan Beulich Cc: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On Fri, Feb 22, Jan Beulich wrote: > >>> On 21.02.13 at 18:31, Olaf Hering wrote: > > It did not happen with xl. > > But the same guest and Dom0 kernel, and the same hypervisor? Yes, same sles11sp2 dom0, and 3.7.9 pvops guest. > > Here is the output while doing xm migrate: > > > > (XEN) HVM2 restore: VMCE_VCPU 0 > > (XEN) HVM2 restore: VMCE_VCPU 1 > > (XEN) HVM2 restore: TSC_ADJUST 0 > > (XEN) HVM2 restore: TSC_ADJUST 1 > > (XEN) mm.c:1983:d0 Error pfn 4112c5: rd=ffff83036ffef000, od=0000000000000000, caf=180000000000000, taf=7400000000000001 > > Didn't even notice yesterday that this is apparently after restore > has already started. Which makes me curious whether the domain > that is being referenced with rd= is the old or the new one (would > require printing the domain ID; honestly I never understood what > use printing of the domain pointer is). > > I'm also confused by the domain pointer always being the same; > I would expect it to at least toggle between two values, but > probably even be different between every instance of the guest. > But you're not having a stubdom configured for the guest either, > according to the config you sent earlier... The rd->domain_id is DOMID_COW in both cases. Olaf