APPLIED(B,C)/cmt: [PATCH] [B-C-D/master][SRU] efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted

[Khaled Elmously]

Applied to B,C after adding missing BugLink and URL of upstream repo


On 2019-02-20 15:51:33 , Paolo Pisati wrote:
> BugLink: https://bugs.launchpad.net/bugs/1814982
> 
> [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, off by default.
> 
> Clean cherry-pick, the patch is queued for 5.1 and the reporter has tested it
> (and reported to be working) on one of the above arm64 laptop.
> 
> Ard Biesheuvel (1):
>   efi/arm/arm64: Allow SetVirtualAddressMap() to be omitted
> 
>  drivers/firmware/efi/libstub/arm-stub.c        |  5 +++++
>  drivers/firmware/efi/libstub/efi-stub-helper.c | 10 ++++++++++
>  drivers/firmware/efi/libstub/efistub.h         |  1 +
>  drivers/firmware/efi/libstub/fdt.c             |  3 +++
>  4 files changed, 19 insertions(+)
> 
> -- 
> 2.7.4
> 
> 
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