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[Ian Whitfield <2112348@xxxxxxxxxxxxxxxxxx>]

** Also affects: linux-gcp (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux-gcp (Ubuntu Bionic)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2112348

Title:
  Xenial linux-gcp lacks GVE suspend support

Status in linux-gcp package in Ubuntu:
  New
Status in linux-gcp source package in Xenial:
  New
Status in linux-gcp source package in Bionic:
  New

Bug description:
  SRU Justification

  [Impact]
  Google would like suspend support in all kernels. This ticket covers suspend support for the GVE driver going back to Xenial.

  [Fix]
  Backport 974365e51861 ("gve: Implement suspend/resume/shutdown") to -gcp kernels missing it.

  [Test Plan]
  Suspend and resume a Xenial instance with a GVNIC and SCSI disk (NVMe suspend is not yet working). In an unpatched kernel, the GVE driver times out and gets reset by a net device watchdog. In the patched kernel, networking resumes quickly after resuming without a watchdog timer.

  [Regression Potential]
  Since the added suspend/resume functionality should only happen when suspending and resuming, and suspending in previous kernels ended up crashing the driver anyway, a regression is unlikely to be more severe than the previously broken functionality.

  [Other]
  SF #00410858

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