** Changed in: linux (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1745508
Title:
Please backport vmd suspend/resume patches to 16.04 hwe
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Artful:
Fix Released
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 e2b1820bd5d0962d6f271b0d47c3a0e38647df2f is in mainline as of
v4.14-rc1.
[Fixes]
commit e2b1820bd5d0962d6f271b0d47c3a0e38647df2f
Author: Scott Bauer <[email protected]>
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
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