Bisect result is git bisect start # good: [a9e8aeb3755bccb7b51174adcf4a3fc427e0d147] Update version for v2.0.0 release git bisect good a9e8aeb3755bccb7b51174adcf4a3fc427e0d147 # bad: [a8c40fa2d667e585382080db36ac44e216b37a1c] Update version for v2.5.0 release git bisect bad a8c40fa2d667e585382080db36ac44e216b37a1c # bad: [73706bd1275bef2e7b3962d1be18a20cb8df7f66] virtio-balloon: use standard headers git bisect bad 73706bd1275bef2e7b3962d1be18a20cb8df7f66 # bad: [fe08275db9b88ecf3a30c7540b894c25aec150c2] vfio: Enable NVIDIA 88000 region quirk regardless of VGA git bisect bad fe08275db9b88ecf3a30c7540b894c25aec150c2 # good: [3016dca06cba0ef9511f1c81c7e73bfc805fb254] PPC: e500: implement PCI INTx routing git bisect good 3016dca06cba0ef9511f1c81c7e73bfc805fb254 # bad: [1399c60d70a261acbeb65f614a00eab2dbf4237b] virtio-net: use virtio wrappers to access headers git bisect bad 1399c60d70a261acbeb65f614a00eab2dbf4237b # good: [0a99aae5fab5ed260aab96049c274b0334eb4085] Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging git bisect good 0a99aae5fab5ed260aab96049c274b0334eb4085 # good: [857aee337c22dc6c56304146e938efacaf587e1c] target-i386: Simplify reporting of unavailable features git bisect good 857aee337c22dc6c56304146e938efacaf587e1c # bad: [ac8076ac8638428e2a96d5f6c7e80f2014f9e379] Merge remote-tracking branch 'remotes/qmp-unstable/queue/qmp' into staging git bisect bad ac8076ac8638428e2a96d5f6c7e80f2014f9e379 # bad: [6026db4501f773caaa2895cde7f93022960c7169] spapr: Define a 2.1 pseries machine git bisect bad 6026db4501f773caaa2895cde7f93022960c7169 # bad: [8589744aaf07b62e7be4233727c45b8866d27d43] Merge remote-tracking branch 'remotes/afaerber/tags/qom-cpu-for-2.1' into staging git bisect bad 8589744aaf07b62e7be4233727c45b8866d27d43 # good: [fefb41bf3485a1c9a44c15e382d28035c6fb5f4b] target-i386: Support check/enforce flags in TCG mode, too git bisect good fefb41bf3485a1c9a44c15e382d28035c6fb5f4b # bad: [303752a9068bfe84b9b05f1cd5ad5ff65b7f3ea6] target-i386: Support "invariant tsc" flag git bisect bad 303752a9068bfe84b9b05f1cd5ad5ff65b7f3ea6 # bad: [120eee7d1fdb2eba15766cfff7b9bcdc902690b4] target-i386: Set migratable=yes by default on "host" CPU mooel git bisect bad 120eee7d1fdb2eba15766cfff7b9bcdc902690b4 # good: [84f1b92f974fbb19967c5f10ac6c3f4a04fb86dd] target-i386: Add "migratable" property to "host" CPU model git bisect good 84f1b92f974fbb19967c5f10ac6c3f4a04fb86dd # first bad commit: [120eee7d1fdb2eba15766cfff7b9bcdc902690b4] target-i386: Set migratable=yes by default on "host" CPU mooel
-- 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/1829555 Title: nested virtualization w/first level trusty guests has odd MDS behavior Status in linux package in Ubuntu: Confirmed Status in qemu package in Ubuntu: Confirmed Bug description: When nested kvm virtualization is used (with host-passthrough), if the first level guest is a trusty vm, odd behavior is seen in the second level guest: host os: disco/5.0.0-15.16-generic/qemu 1:3.1+dfsg-2ubuntu3.1 contents of /sys/devices/system/cpu/vulnerabilities/mds: Mitigation: Clear CPU buffers; SMT vulnerable 1st level vm: trusty/4.4.0-148.174~14.04.1-generic/qemu 2.0.0+dfsg-2ubuntu1.46 contents of /sys/devices/system/cpu/vulnerabilities/mds: Mitigation: Clear CPU buffers; SMT Host state unknown 2nd level vm: bionic/4.15.0-50.54-generic contents of /sys/devices/system/cpu/vulnerabilities/mds: Not affected This behavior is not seen when the first level guest is a xenial or bionic vm (same bare metal hardware): 1st level vm: bionic/4.15.0-50.54-generic/qemu 1:2.11+dfsg-1ubuntu7.13 contents of /sys/devices/system/cpu/vulnerabilities/mds: Mitigation: Clear CPU buffers; SMT Host state unknown 2nd level vm: bionic/4.15.0-50.54-generic contents of /sys/devices/system/cpu/vulnerabilities/mds: Mitigation: Clear CPU buffers; SMT Host state unknown and: 1st level vm: xenial/4.4.0-148.174-generic/qemu 1:2.5+dfsg-5ubuntu10.39 contents of /sys/devices/system/cpu/vulnerabilities/mds: Mitigation: Clear CPU buffers; SMT Host state unknown 2nd level vm: bionic/4.15.0-50.54-generic contents of /sys/devices/system/cpu/vulnerabilities/mds: Mitigation: Clear CPU buffers; SMT Host state unknown It's not clear whether this is an issue with linux/kvm or qemu in trusty. --- ApportVersion: 2.14.1-0ubuntu3.29 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2239 F.... pulseaudio DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=4fa9460d-7ed4-49db-8e22-86a5107d0062 InstallationDate: Installed on 2019-02-14 (92 days ago) InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803) Lsusb: Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: QEMU Standard PC (i440FX + PIIX, 1996) Package: qemu 2.0.0+dfsg-2ubuntu1.46 PackageArchitecture: amd64 ProcEnviron: TERM=screen PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 qxldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-148-generic root=UUID=9a35107e-83fa-4010-81e1-235a4ea14fe6 ro quiet splash vt.handoff=7 ProcVersionSignature: User Name 4.4.0-148.174~14.04.1-generic 4.4.177 RelatedPackageVersions: linux-restricted-modules-4.4.0-148-generic N/A linux-backports-modules-4.4.0-148-generic N/A linux-firmware 1.127.24 RfKill: Tags: trusty trusty Uname: Linux 4.4.0-148-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: 1.12.0-1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-bionic dmi.modalias: dmi:bvnSeaBIOS:bvr1.12.0-1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-bionic dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1829555/+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
