Please backport vmd suspend/resume patches to 16.04 hwe
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Joseph Salisbury | ||
Artful |
Fix Released
|
Medium
|
Joseph Salisbury |
Bug Description
== SRU Justification ==
This bug was opened to request commit e2b1820bd5d0 be backported from 4.14 to
the 4.13 kernel in Artful. Without this patch, servers with VMD enabled
run into issues suspending and resuming.
Commit e2b1820bd5d0962
v4.14-rc1.
[Fixes]
commit e2b1820bd5d0962
Author: Scott Bauer <email address hidden>
Date: Fri Aug 11 14:54:32 2017 -0600
PCI: vmd: Free up IRQs on suspend path
[Impact]
Without this patch, servers with VMD enabled may run into issues suspending and resuming
[Test Case]
Typically this manifests by having many other devices having acquired IRQ resources competing with VMD. Without the patch, the server may fail to suspend when it can't move the IRQs to core 0 because of the lack of IRQs available on core 0.
[Regression Potential]
Low. This only affects one component of one arch and affects the non-typical use-case of suspending a server
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
status: | Incomplete → Triaged |
Changed in linux (Ubuntu Artful): | |
status: | New → Triaged |
importance: | Undecided → Medium |
Changed in linux (Ubuntu): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Artful): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Artful): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-artful removed: verification-needed-artful |
Changed in linux (Ubuntu): | |
status: | Fix Committed → Fix Released |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1745508
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.