We've already picked up and applied commit 84eb186b to our Vivid kernel,
ie.

  commit 84eb186bc37c0900b53077ca21cf6dd15823a232
  Author: Hon Ching (Vicky) Lo <[email protected]>
  Date:   Sun Nov 30 15:01:28 2014 +0100

    tpm: Fix NULL return in tpm_ibmvtpm_get_desired_dma

We still need to cherry-pick eb71f8a5:

  commit eb71f8a5e33fa1066fb92f0111ab366a341e1f6c
  Author: honclo <[email protected]>
  Date:   Thu Feb 12 21:02:24 2015 -0500

    Added Little Endian support to vtpm module

And we still need to pick the last patch which is currently in the TPM
Device Driver Maintainer's tree -> git://github.com/PeterHuewe/linux-
tpmdd.git

  commit 2aee7fb855f221639bc3ed5a15c6d758fe0cf0fa
  Author: [email protected] <[email protected]>
  Date:   Fri Feb 20 18:11:24 2015 -0600

    tpm/ibmvtpm: Additional LE support for tpm_ibmvtpm_send


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

** Changed in: linux (Ubuntu)
       Status: Confirmed => In Progress

** Changed in: linux (Ubuntu)
     Assignee: Chris J Arges (arges) => Leann Ogasawara (leannogasawara)

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https://bugs.launchpad.net/bugs/1420575

Title:
  Ubuntu-LE lpar won't boot with vTPM enabled

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