This bug was fixed in the package linux - 4.15.0-50.54
---
linux (4.15.0-50.54) bionic; urgency=medium
* CVE-2018-12126 // CVE-2018-12127 // CVE-2018-12130
- Documentation/l1tf: Fix small spelling typo
- x86/cpu: Sanitize FAM6_ATOM naming
- kvm: x86: Report STIBP on GET_
This bug was fixed in the package linux - 4.4.0-148.174
---
linux (4.4.0-148.174) xenial; urgency=medium
* CVE-2018-12126 // CVE-2018-12127 // CVE-2018-12130
- Documentation/l1tf: Fix small spelling typo
- perf/x86/intel: Add model number for Skylake Server to perf
- per
Validated on linux 4.4.0-147.173 from xenial-proposed:
ubuntu@xenial-l2:~$ uname -r
4.4.0-147-generic
ubuntu@xenial-l2:~$ cat
/sys/devices/system/clocksource/clocksource0/available_clocksource
kvm-clock tsc hpet acpi_pm
ubuntu@xenial-l2:~$ dmesg | grep -i tsc
[0.00] tsc: Detected 1997.7
Validated on linux 4.15.0-49.53 from bionic-proposed:
ubuntu@bionic-l2:~$ uname -r
4.15.0-49-generic
ubuntu@bionic-l2:~$ cat
/sys/devices/system/clocksource/clocksource0/available_clocksource
kvm-clock tsc hpet acpi_pm
ubuntu@bionic-l2:~$ dmesg | grep -i tsc
[0.04] tsc: Detected 1997.76
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verifica
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verifica
** Changed in: linux (Ubuntu Bionic)
Status: Confirmed => Fix Committed
** Changed in: linux (Ubuntu Xenial)
Status: Confirmed => Fix Committed
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Patches submitted to kernel-team list:
Xenial - https://lists.ubuntu.com/archives/kernel-team/2019-April/099810.html
Bionic - https://lists.ubuntu.com/archives/kernel-team/2019-April/099813.html
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** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Heitor R. Alves de Siqueira (halves)
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => Heitor R. Alves de Siqueira (halves)
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** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
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https://bugs.launchpad.net/bugs/1822821
Title:
TSC clocksource not available in nested guests
Stat
This is easily verifiable on both Xenial and Bionic guests from uvt-kvm.
I've brought up both as nested instances, and TSC fails to show up as an
available clocksource:
== Xenial guest ==
$ uvt-kvm ssh bionic-l1
ubuntu@bionic-l1:~$ uvt-kvm ssh xenial-l2
ubuntu@xenial-l2:~$ uname -r
4.4.0-143-gen
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