For Xenial, reinstalled Xen from proposed. Booted Zesty 4.10 HVM ok. -- 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/1671760
Title: Xen HVM guests running linux 4.10 fail to boot on Intel hosts Status in linux package in Ubuntu: Won't Fix Status in xen package in Ubuntu: Fix Released Status in linux source package in Trusty: Invalid Status in xen source package in Trusty: Fix Committed Status in linux source package in Xenial: Invalid Status in xen source package in Xenial: Fix Committed Status in linux source package in Yakkety: Invalid Status in xen source package in Yakkety: Fix Committed Status in linux source package in Zesty: Won't Fix Status in xen source package in Zesty: Fix Released Bug description: Starting with Linux kernel 4.10, the kernel does some sanity checking on the TSC_ADJUST MSR. Xen has implemented some support for that MSR in the hypervisor (Xen 4.3 and later) for HVM guests. But boot and secondary vCPUs are set up inconsistently. This causes the boot of a 4.10 HVM guest to hang early on boot. This was fixed in the hypervisor by: commit 98297f09bd07bb63407909aae1d309d8adeb572e x86/hvm: do not set msr_tsc_adjust on hvm_set_guest_tsc_fixed That fix would be contained in 4.6.5 and 4.7.2 and would be in 4.8.1 (not released, yet) which mean that Ubuntu 14.04/16.04/16.10 and 17.04 currently are affected. --- SRU Justification: Impact: Without the TSC_ADJUST MSR fix, 4.10 and later kernels will get stuck at boot when running as (PV)HVM guests on Xen 4.3 and later. Fix: Above fix either individually applied or as part of Xen stable stream (for Xen 4.7.x and 4.6.x) resolves the issue. Testcase: - Requires Intel based host which supports the TSC_ADJUST MSR - Configured as Xen host - HVM guest running Zesty/17.04 - Stuck at boot before, normal booting OS after To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1671760/+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
