Kernel 5.4.0-71 is on proposed-channel and solves this problem! Big thanks to you all!
-- 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/1920660 Title: Missing Commit for 5.4-Kernel breaks xen Dom0 Status in linux package in Ubuntu: Confirmed Status in linux-hwe-5.4 package in Ubuntu: Confirmed Bug description: You commited "xen: Fix event channel callback via INTX/GSI" for kernel 5.4.0-67 for HWE 18.04 and 20.04. This commit is incomplete and breaks Ubuntu as Dom0 for xen. You need also Commit "xen: Fix XenStore initialisation for XS_LOCAL" See https://lkml.org/lkml/2021/1/28/1235 See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915195 Upstream: Commit: 3499ba8198cad47b731792e5e56b9ec2a78a83a2 Fixing Commit: 5f46400f7a6a4fad635d5a79e2aa5a04a30ffea1 5.10: Commit: fa5f2e04daa44961a1026e93f0cc88caa3c27d3d (5.10.11) Fixing Commit: 5f3d54c00f1f2682cee9c590c22655b0330ffd18 (5.10.13) 5.4: Commit: a09d4e7acdbf276b2096661ee82454ae3dd24d2b (5.4.93) Fixing commit 2c7b4b25293aebd2563188f7196f6e0ff0cb0f9f (5.4.95) Without this patch you cannot start guests (DomU) on this machine! Error message while creating DomU: libxl: error: libxl_device.c:1105:device_backend_callback: Domain X:unable to add device with path /XXXX libxl: error: libxl_create.c:1452:domcreate_launch_dm: Domain X:unable to add disk devices See: - https://lkml.org/lkml/2021/1/28/1231 and https://lkml.org/lkml/2021/1/29/14 - https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.4.107&id=2c7b4b25293aebd2563188f7196f6e0ff0cb0f9f - https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.95 - http://changelogs.ubuntu.com/changelogs/pool/main/l/linux-hwe-5.4/linux-hwe-5.4_5.4.0-67.75~18.04.1/changelog - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1915195 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1920660/+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