Allow hugepage backing for "p8compat" mode kvm guests
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
The Ubuntu-power-systems project |
Fix Released
|
High
|
Canonical Kernel Team | ||
linux (Ubuntu) |
Fix Released
|
High
|
Canonical Kernel Team | ||
Bionic |
Fix Released
|
High
|
Canonical Kernel Team |
Bug Description
== Comment: #0 - JENIFER HOPPER <email address hidden> - 2018-03-06 15:23:56 ==
+++ This bug was initially created as a clone of Bug #165320 +++
---Problem Description---
Paul Mackerras posted a patch to allow for hugepage backing of Hash guest(s) on a Radix host:
http://
" KVM: PPC: Book3S HV: Fix VRMA initialization with 2MB or 1GB memory backing "
With a 1GB backing in the Radix host, this patch allows the Hash guest to boot and allocate and use 16MB hugepages if needed (since backing page size must be larger than guest hugepage size).
Once this is accepted upstream we should get it included in Ubuntu so that p8compat guests can use hugepages.
Contact Information = <email address hidden>
---uname output---
Ubuntu 18.04
Machine Type = 5104-22C
---Debugger---
A debugger is not configured
---Steps to Reproduce---
Back p8compat guest w/ 1GB hugepages, see that 16MB hugepages are available to reserve and use inside the guest.
== Comment: #2 - JENIFER HOPPER <email address hidden> - 2018-03-07 10:43:36 ==
The patch is now in Paul's upstream tree:
https:/
tags: | added: architecture-ppc64le bugnameltc-165400 severity-high targetmilestone-inin--- |
Changed in ubuntu: | |
assignee: | nobody → Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) |
affects: | ubuntu → kernel-package (Ubuntu) |
Changed in ubuntu-power-systems: | |
importance: | Undecided → High |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
tags: | added: triage-g |
affects: | kernel-package (Ubuntu) → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
status: | New → Triaged |
importance: | Medium → High |
tags: | added: bionic kernel-da-key |
Changed in linux (Ubuntu Bionic): | |
assignee: | Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) → Canonical Kernel Team (canonical-kernel-team) |
Changed in ubuntu-power-systems: | |
status: | New → Triaged |
Changed in linux (Ubuntu Bionic): | |
status: | Triaged → Fix Committed |
tags: |
added: targetmilestone-inin1804 removed: targetmilestone-inin--- |
Changed in ubuntu-power-systems: | |
status: | Triaged → Fix Committed |
Changed in ubuntu-power-systems: | |
status: | Fix Committed → Fix Released |
------- Comment From <email address hidden> 2018-04-08 19:49 EDT-------
Can some one tell me this fix is made available in "-proposed" build at least for test to validate?