This bug was fixed in the package linux - 5.0.0-7.8

---------------
linux (5.0.0-7.8) disco; urgency=medium

  * linux: 5.0.0-7.8 -proposed tracker (LP: #1818519)

  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts

  * unnecessary request_queue freeze (LP: #1815733)
    - block: avoid setting nr_requests to current value
    - block: avoid setting none scheduler if it's already none

  * Miscellaneous Ubuntu changes
    - SAUCE: selftests: net: Don't fail test_vxlan_under_vrf on xfail
    - update dkms package versions

  [ Upstream Kernel Changes ]

  * Rebase to v5.0

 -- Seth Forshee <seth.fors...@canonical.com>  Mon, 04 Mar 2019 08:46:10
-0600

** Changed in: linux (Ubuntu Disco)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1814982

Title:
  efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Committed
Status in linux source package in Cosmic:
  Fix Committed
Status in linux source package in Disco:
  Fix Released

Bug description:
  [Impact]
  The Ubuntu kernel is not currently bootable on various arm64 laptops (HP Envy 
x2, Asus NovaGo, Lenovo Miix 630, Lenovo Yoga C630, Samsung ...) because of EFI 
memory permissions/restrictions. The reason is explained in the commit supplied 
below. 

  [Test Case]
  Install and boot Ubuntu on one of the above arm64 laptops.

  [Fix]
  Committed upstream: 
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=4e46c2a956215482418d7b315749fb1b6c6bc224

  [Regression Risk]
  This commit adds support for an optional kernel command line parameter so 
there is minimal to no risk.

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