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[Bug 1589704] Re: workaround cavium thunderx silicon erratum 23144


This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!

** Tags added: verification-needed-xenial

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  workaround cavium thunderx silicon erratum 23144

Status in linux package in Ubuntu:
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  This impacts 2 socket Cavium ThunderX systems using pass-1.1 silicon, and can result in IO hangs.

  [Test Case]
  $ dmesg | grep "ITS command queue timeout"

  [Regression Risk]
  The workaround is in gicv3 specific code, and only activated when the hw revision in the IIDR matches ThunderX pass 1.x silicon, so risk to other platforms is minimal.

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