[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [xl restore and migrating problem - hardware compatibility]
On 23/12/16 22:56, Ing. Ricardo Brisighelli wrote: El Vie 23 Dic 2016 17:16:32 Andrew Cooper escribió:On 23/12/16 17:00, Andrew Cooper wrote:On 23/12/16 16:32, Ing. Ricardo Brisighelli wrote:Hi, i'm gentoo user and try with xen 4.6.3 and 4.7.1 in both version have the same problem. My cpu is AMD A10-7860KThis issue has been reported before ("[Xen-devel] "X86_PV_VCPU_MSRS record truncated" during domain restore"). I submitted patches to fix it ("Fix issues with zero-length records in migration v2" in July even), which made no progress. As the author of migration v2, and unfortunately of this bug, I stand by v1 of my fix without any further modification. You can find the patches here: https://xenbits.xen.org/gitweb/?p=people/andrewcoop/xen.git;a=shortlog;h=r efs/heads/tools-fix-zero-length-recordsIf you don't want to take patches, you should be able to work around the issue by booting Xen with cpuid_mask_ext_ecx=fbffffff Specifically, you are looking to hide the DBEXT feature from Xen so it doesn't choose to insert them into the migration stream to start with. This migration bug only manifests when the hardware is capable, but the VM isn't using the feature. ~AndrewHi Andrew, first i try boot xen with cpuid_mask_ext_ecx=fbffffff, restore and migration works well, then try apply the patchs tools/python: Adjust migration v2 library to warn about... tools/libxc: Avoid generating inappropriate zero-length... tools/libxc: Tolerate zero-length records in migration... remove cpuid_mask, recompile and install xen-4.7.1, reboot and the problem persist. I'm missing something? Does Gentoo split the various parts of Xen apart into sub-packages? This needs to be the dom0 tools build, not the hypervisor build. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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