** Tags removed: verification-needed-bionic-linux-gcp-5.4
** Tags added: verification-done-bionic-linux-gcp-5.4

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https://bugs.launchpad.net/bugs/2049922

Title:
  PCI ATS quirk patch needed for IDPF

Status in linux-gcp package in Ubuntu:
  New
Status in linux-gcp-4.15 package in Ubuntu:
  New
Status in linux-gcp source package in Bionic:
  In Progress
Status in linux-gcp-4.15 source package in Bionic:
  Fix Committed
Status in linux-gcp source package in Focal:
  Fix Released

Bug description:
  [Impact]

  * Request from Google to include Intel patches for IDPF support if used from
  out-of-tree module to prevent system instability.

  [Fixes]
  f18b1137d38c ("PCI: Extract ATS disabling to a helper function")
  a18615b1cfc0 ("PCI: Disable ATS for specific Intel IPU E2000 devices")

  
  [Test Case]

  * Compile test
  * Boot test
  * Test on non-IDPF instance
  * Tested by Google

  [Where things could go wrong]

  * Low chance of regression, changes very isolated

  [Other Info]

  * SF #00376470

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