[PATCH 0/2][SRU][OEM-5.6] Restart the machine successfully after suspend

Koba Ko koba.ko at canonical.com
Wed Jul 22 06:44:43 UTC 2020


BugLink: https://bugs.launchpad.net/bugs/1888375 

[Impact]
After suspend then restart, the System would hang during shutdown.

[Fix]
The commit has pushed to upstream but still wait for the maintainer of IOMMU to apply.
https://lore.kernel.org/linux-iommu/20200721001713.24282-1-baolu.lu@linux.intel.com/

Skip the TE disabling for the quirky gfx dedicated iommu and
the system would not hang during shutdown.

[test]
With the patch, the machine restart successfully.

[Regression Potential]
low, the patch just skip the TE disabling and wouldn't affect the normal usage.

Lu Baolu (1):
  UBUNTU: SAUCE: iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu

Rajat Jain (1):
  iommu/vt-d: Don't apply gfx quirks to untrusted devices

 drivers/iommu/dmar.c        |  1 +
 drivers/iommu/intel-iommu.c | 63 +++++++++++++++++++++++++++++++++++++
 include/linux/dmar.h        |  1 +
 include/linux/intel-iommu.h |  2 ++
 4 files changed, 67 insertions(+)

-- 
2.25.1




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