Avoid migration issues with aligned 2MB THB
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
The Ubuntu-power-systems project |
Invalid
|
Medium
|
Canonical Kernel Team | ||
linux (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Bionic |
Won't Fix
|
Medium
|
Unassigned | ||
Cosmic |
Invalid
|
Medium
|
Unassigned | ||
Disco |
Fix Released
|
Medium
|
Unassigned | ||
Eoan |
Fix Released
|
Medium
|
Unassigned | ||
qemu (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Eoan |
Invalid
|
Undecided
|
Unassigned |
Bug Description
FYI: This blocks bug 1781526 - once this one here is resolved we can go on with SRU considerations for 1781526
------- Comment From <email address hidden> 2018-08-20 17:12 EDT-------
Hi, in some environments it was observed that this qemu patch to enable THP made it more likely to hit guest migration issues, however the following kernel patch resolves those migration issues:
https:/
KVM: PPC: Book3S HV: Use correct pagesize in kvm_unmap_radix()
Once merged upstream, it would be good to include that change as well to avoid potential migration problems. Should I open a new bug for that or is it better to track here?
Note Paelzer: I have not seen related migration issues myself, but it seems reasonable and confirmed by IBM.
no longer affects: | qemu |
Changed in ubuntu-power-systems: | |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
importance: | Undecided → Critical |
tags: | added: triage-g |
description: | updated |
Changed in ubuntu-power-systems: | |
assignee: | Canonical Kernel Team (canonical-kernel-team) → bugproxy (bugproxy) |
Changed in linux (Ubuntu Bionic): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Cosmic): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Bionic): | |
importance: | Medium → Critical |
status: | Confirmed → In Progress |
Changed in linux (Ubuntu Cosmic): | |
status: | Confirmed → In Progress |
tags: |
added: targetmilestone-inin1804 removed: targetmilestone-inin--- |
Changed in ubuntu-power-systems: | |
status: | New → In Progress |
tags: |
added: triage-a removed: triage-g |
Changed in ubuntu-power-systems: | |
status: | In Progress → Incomplete |
tags: |
added: triage-r removed: triage-a |
Changed in linux (Ubuntu): | |
importance: | Critical → Medium |
Changed in linux (Ubuntu Bionic): | |
importance: | Critical → Medium |
Changed in linux (Ubuntu Cosmic): | |
importance: | Critical → Medium |
Changed in ubuntu-power-systems: | |
status: | Incomplete → Invalid |
Changed in linux (Ubuntu): | |
assignee: | Joseph Salisbury (jsalisbury) → nobody |
Changed in linux (Ubuntu Bionic): | |
assignee: | Joseph Salisbury (jsalisbury) → nobody |
Changed in linux (Ubuntu Cosmic): | |
assignee: | Joseph Salisbury (jsalisbury) → nobody |
Changed in linux (Ubuntu Bionic): | |
status: | Invalid → New |
Changed in linux (Ubuntu): | |
status: | Invalid → New |
Changed in ubuntu-power-systems: | |
status: | Invalid → Confirmed |
Changed in ubuntu-power-systems: | |
status: | Confirmed → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | Confirmed → In Progress |
Changed in linux (Ubuntu): | |
status: | Confirmed → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Incomplete |
Changed in linux (Ubuntu): | |
status: | In Progress → Incomplete |
Changed in ubuntu-power-systems: | |
status: | In Progress → Incomplete |
Changed in ubuntu-power-systems: | |
status: | Incomplete → Invalid |
Changed in linux (Ubuntu): | |
status: | Expired → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Won't Fix |
no longer affects: | qemu (Ubuntu Disco) |
Changed in linux (Ubuntu Disco): | |
importance: | Undecided → Medium |
Oh, I just realized while initially reported against qemu in bug 1781526 that this is a kernel, and not a qemu patch.
That spreads the timeline a bit:
- this should be in Cosmic before Release to avoid issues due to the fix of 1781526.
- since that is kind of short I'll bump priority there.
- This has to be in Bionic before a fix for bug 1781526 (I'll wait with a qemu change until this one is complete)
I'm marking the qemu task invalid (no action there other than to track the Bionic release of this which will finally unblock the SRU of bug 1781526 to Bionic).
I'm adding a kernel task to reflect that this is a kernel change that is needed.
Finally I'm adding a Cosmic and Bionic Task.