[Bug 1814982] Re: efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted

** Changed in: linux (Ubuntu Bionic)
Status: Confirmed => Fix Committed

** Changed in: linux (Ubuntu Cosmic)
Status: Confirmed => Fix Committed

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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 Committed
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 Committed

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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