The following landed in 4.16-rc1 and would need to be considered for
backporting.  Adding a linux task for Bionic.

10f21df4a23540b5da8e88d1030ff8c37818e04f mmc: block: blk-mq: Add support for 
direct completion
88a516461ee07a994c0e7016faf85f3466de1d09 mmc: block: blk-mq: Separate card 
polling from recovery
c89b4851c67fb7354862850ae181de883269487d mmc: block: Make card_busy_detect() 
accumulate all response error bits
f47a1fe346b1568df0e9b158574b2939432313df mmc: block: blk-mq: Check error bits 
and save the exception bit when polling card busy
7701885e56cee3de4447c0653f9059b62844983b mmc: block: Check the timeout 
correctly in card_busy_detect()
0987c6b046e199b9b922a585c62e9503486fe0bc mmc: block: Check for transfer state 
in card_busy_detect()
92c0a0cc9483c6b9cc1b61273d30a0a601cb5e15 mmc: block: Add timeout_clks when 
calculating timeout
6b7a363d2ce83e3940dc0c3628e478fe95f23985 mmc: block: Reduce polling timeout 
from 10 minutes to 10 seconds
7eb43d537166c7d767af450901acd0ecbf94625c mmc: block: blk-mq: Stop using legacy 
42f532da3a44843668dbacc1838a028b0a9b7373 mmc: mmc_test: Do not use 
mmc_start_areq() anymore
d2383318c5a626312d166217e3788e54b1650c56 mmc: core: Ensure cmd_completion is 
23a185254ace8e63dc4ca36e0315aed9440ae749 mmc: mmc_test: Ensure command queue is 
disabled for testing
1bec43a3b181baebdf8a4cd739b480a9132601d7 mmc: core: Remove option not to use 
0fbfd12518303e9b32ac9fd231439459eac848f9 mmc: block: Remove code no longer 
needed after the switch to blk-mq
126b62700386da782f83579e9b0431ea76c2da3d mmc: core: Remove code no longer 
needed after the switch to blk-mq
0562315b86372d2cdd9cc8924b92cfab37049fbc mmc: cqhci: Ensure macro parameters 
are wrapped in parentheses

** Information type changed from Proprietary to Public

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

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

** Tags added: kernel

** Changed in: linux (Ubuntu Bionic)
       Status: New => Triaged

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

** Changed in: linux (Ubuntu Bionic)
     Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)

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  [Feature] GLK/CNL:eMMC 5.1 support

Status in intel:
Status in linux package in Ubuntu:
Status in linux source package in Bionic:

Bug description:
  CNL will have eMMC5.1 capable host controller that includes new features:
  1) Command queue support – making the data transfers highly efficient by 
offloading the software overhead into the controller.
  2) eMMC 5.1 further improves the reliability of operation by utilizing an 
“enhanced strobe” at the PHY layer.
  The eMMC5.1 is backward compatible with the existing eMMC 4.51 and eMMC 5.0 

  Target Kernel:4.16

  Target Release: 18.04

  Target Platform: GLK/CNL

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