------- Comment From [email protected] 2017-07-10 04:44 EDT------- $ git log 3d3efb68c19e539f -1 commit 3d3efb68c19e539f0535c93a5258c1299270215f Author: Paul Mackerras <[email protected]> Date: Tue Jun 6 14:35:30 2017 +1000
KVM: PPC: Book3S HV: Ignore timebase offset on POWER9 DD1 POWER9 DD1 has an erratum where writing to the TBU40 register, which is used to apply an offset to the timebase, can cause the timebase to lose counts. This results in the timebase on some CPUs getting out of sync with other CPUs, which then results in misbehaviour of the timekeeping code. To work around the problem, we make KVM ignore the timebase offset for all guests on POWER9 DD1 machines. This means that live migration cannot be supported on POWER9 DD1 machines. Cc: [email protected] # v4.10+ Signed-off-by: Paul Mackerras <[email protected]> $ $ git tag --contains 3d3efb68c19e539f v4.12 v4.12-rc7 $ Hello Canonical, Commit 3d3efb68c19e539f fixes this issue. Its available in 4.12-rc7 and higher kernels. Please include it with ubuntu 16.04.03 kernel. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693566 Title: Ubuntu 16.04.03: "NMI watchdog: BUG: soft lockup" occurs while running stress-ng on PowerNV machine. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1693566/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
