I have not reproduced this bug as I don't have and environment to do so. Maybe Jan Henke, the original bug reporter, can confirm your question in comment #42?
The Wily and Vivid test kernels I built only have the following commit cherry-picked per comment #34: commit 4e4bd36f97b1492f19b3329ac74ed313da13de34 Author: Vitaly Kuznetsov <vkuzn...@redhat.com> Date: Fri May 29 11:18:02 2015 -0700 Looking at the patches you mentioned in comment #42, are the following two commits in mainline also needed to fix this bug? commit 7ace99170789bc53cbb7e9e352d7a3851208fbcf Author: Mel Gorman <mgor...@suse.de> Date: Thu Aug 6 15:46:13 2015 -0700 mm, meminit: allow early_pfn_to_nid to be used during runtime commit e298ff75f133f2524bb6a9a305b17c5f6ff1a6b2 Author: Mel Gorman <mgor...@techsingularity.net> Date: Thu Aug 6 15:46:51 2015 -0700 mm: initialize hotplugged pages as reserved These last two commits were in mainline as of v4.2-rc6. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1294283 Title: Memory balloning in Hyper-V generation 2 does not work Status in linux package in Ubuntu: In Progress Status in linux source package in Trusty: In Progress Status in linux source package in Utopic: In Progress Status in linux source package in Vivid: In Progress Status in linux source package in Wily: In Progress Bug description: The generation 2 VM has been assinged a memory range of 512 MiB- 4096MiB with a starting memory of 512 MiB. It should get additional memory when needed, but the total available memory in the VM stays at the intial 512 MiB and the kernel starts swapping instead of allocating more memory from the host. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-18-generic 3.13.0-18.38 ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6 Uname: Linux 3.13.0-18-generic x86_64 ApportVersion: 2.13.3-0ubuntu1 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: XFCE Date: Tue Mar 18 19:28:54 2014 HibernationDevice: RESUME=UUID=0d223c65-8c7e-41b4-95b3-05b22ff4679b InstallationDate: Installed on 2014-03-12 (6 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140312) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: Microsoft Corporation Virtual Machine ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-18-generic.efi.signed root=UUID=61b52c1b-300d-4c30-8966-db1745f4a4bc ro video=hyperv_fb:1920x1080 quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-18-generic N/A linux-backports-modules-3.13.0-18-generic N/A linux-firmware 1.126 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/26/2012 dmi.bios.vendor: Microsoft Corporation dmi.bios.version: Hyper-V UEFI Release v1.0 dmi.board.asset.tag: None dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: Hyper-V UEFI Release v1.0 dmi.chassis.asset.tag: 6485-6574-9248-6162-4701-6267-50 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: Hyper-V UEFI Release v1.0 dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0: dmi.product.name: Virtual Machine dmi.product.version: Hyper-V UEFI Release v1.0 dmi.sys.vendor: Microsoft Corporation --- ApportVersion: 2.14-0ubuntu1 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: XFCE DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=2673d21f-4b48-43f1-9b06-8c141a492700 InstallationDate: Installed on 2014-03-29 (9 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: Microsoft Corporation Virtual Machine Package: linux (not installed) ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-22-generic.efi.signed root=UUID=cccf5e59-012e-4ab5-a6ba-08850e60aba1 ro video=hyperv_fb:1920x1080 quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-22.44-generic 3.13.8 RelatedPackageVersions: linux-restricted-modules-3.13.0-22-generic N/A linux-backports-modules-3.13.0-22-generic N/A linux-firmware 1.127 RfKill: Tags: trusty Uname: Linux 3.13.0-22-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 11/26/2012 dmi.bios.vendor: Microsoft Corporation dmi.bios.version: Hyper-V UEFI Release v1.0 dmi.board.asset.tag: None dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: Hyper-V UEFI Release v1.0 dmi.chassis.asset.tag: 6485-6574-9248-6162-4701-6267-50 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: Hyper-V UEFI Release v1.0 dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0: dmi.product.name: Virtual Machine dmi.product.version: Hyper-V UEFI Release v1.0 dmi.sys.vendor: Microsoft Corporation --- ApportVersion: 2.14.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: XFCE DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=2673d21f-4b48-43f1-9b06-8c141a492700 InstallationDate: Installed on 2014-03-29 (12 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) IwConfig: eth0 no wireless extensions. lo no wireless extensions. Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: Microsoft Corporation Virtual Machine Package: linux (not installed) ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic.efi.signed root=UUID=cccf5e59-012e-4ab5-a6ba-08850e60aba1 ro video=hyperv_fb:1920x1080 quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8 RelatedPackageVersions: linux-restricted-modules-3.13.0-23-generic N/A linux-backports-modules-3.13.0-23-generic N/A linux-firmware 1.127 RfKill: Tags: trusty Uname: Linux 3.13.0-23-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 11/26/2012 dmi.bios.vendor: Microsoft Corporation dmi.bios.version: Hyper-V UEFI Release v1.0 dmi.board.asset.tag: None dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: Hyper-V UEFI Release v1.0 dmi.chassis.asset.tag: 6485-6574-9248-6162-4701-6267-50 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: Hyper-V UEFI Release v1.0 dmi.modalias: dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0: dmi.product.name: Virtual Machine dmi.product.version: Hyper-V UEFI Release v1.0 dmi.sys.vendor: Microsoft Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1294283/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp