I built a test kernel with commit e2b1820bd5d0962d6f271b0d47c3a0e38647df2f.
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1745508
Can you test this kernel and see if it resolves this bug?
Note, to test this kernel, you need to install both the linux-image and
linux-image-extra .deb packages.
Thanks in advance!
** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu Artful)
Status: Triaged => In Progress
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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:
In Progress
Status in linux source package in Artful:
In Progress
Bug description:
Can you please backport VMD suspend/resume fixes from 4.14 to current
4.13 HWE?
[Fixes]
commit e2b1820bd5d0962d6f271b0d47c3a0e38647df2f
Author: Scott Bauer <scott.ba...@intel.com>
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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