Reviewed: https://review.opendev.org/579897 Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=ca543438e183b2bd97a08ef781ddeab8303354ed Submitter: Zuul Branch: master
commit ca543438e183b2bd97a08ef781ddeab8303354ed Author: Konstantinos Samaras-Tsakiris <[email protected]> Date: Tue Jul 3 12:28:55 2018 +0000 Hide hypervisor id on windows guests Blueprints hide-hypervisor-id-flavor-extra-spec [1] and add-kvm-hidden-feature [2] allow hiding KVM's signature for guests, which is necessary for Nvidia drivers to work in VMs with passthrough GPUs. While this works well for linux guests on KVM, it doesn't work for Windows guests. For them, KVM emulates some HyperV features. With the current implementation, KVM's signature is hidden, but HyperV's is not, and Nvidia drivers don't work in Windows VMs. This change generates an extra element in the libvirt xml for Windows guests on KVM which obfuscates HyperV's signature too, controlled by the existing image and flavor parameters (img_hide_hypervisor_id and hide_hypervisor_id correspondingly). The extra xml element is <vendor_id state='on' value='1234567890ab'/> in features/hyperv. [1] https://blueprints.launchpad.net/nova/+spec/hide-hypervisor-id-flavor-extra-spec [2] https://blueprints.launchpad.net/nova/+spec/add-kvm-hidden-feature Change-Id: Iaaeae9281301f14f4ae9b43f4a06de58b699fd68 Closes-Bug: 1779845 ** Changed in: nova Status: In Progress => Fix Released -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1779845 Title: hide_hypervisor_id doesn't hide hyperv signature for Windows VMs Status in OpenStack Compute (nova): Fix Released Bug description: Blueprints hide-hypervisor-id-flavor-extra-spec and add-kvm-hidden-feature allow hiding KVM's signature for guests, which is necessary for Nvidia drivers to work in VMs with passthrough GPUs. While this works well for linux guests on KVM hypervisors, it doesn't work for Windows guests on KVM. For them, KVM emulates some HyperV features. With the current implementation, KVM's signature is hidden, but HyperV's is not, and Nvidia drivers don't work in Windows VMs. I propose generating an extra tag in the libvirt xml for Windows guests on KVM which obfuscates HyperV's signature too, controlled by the existing image and flavor parameters (img_hide_hypervisor_id and hide_hypervisor_id correspondingly). To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1779845/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
