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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu Trusty)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1311738

Title:
  Disable PAMU on Freescale kernels

Status in “linux” package in Ubuntu:
  In Progress
Status in “linux” source package in Trusty:
  In Progress

Bug description:
  In Saucy/v3.11 kernel, we used the PAMU SAUCE patch from Freescale.
  The current upstreamed PAMU code appears to break fsl-ehci by
  restricting proper access to memory locations associated with it.

  PAMU is an IOMMU extension that protects and prevents access to
  portions of memory that are known to be reserved for hardware use.
  This extension is not needed for normal runtime, so rather than allow
  broken EHCI, let's disbale this until PAMU can be fixed.

  This only affects Freescale PowerPC kernel variations.

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