[PATCH AUTOSEL 4.14 52/67] efi/arm: preserve early mapping of UEFI memory map longer for BGRT

From: Ard Biesheuvel [ Upstream commit 3ea86495aef2f6de26b7cb1599ba350dd6a0c521 ] The BGRT code validates the contents of the table against the UEFI memory map, and so it expects it to be mapped when the code runs. On ARM, this is currently not the case, since we tear down the early mapping

[PATCH AUTOSEL 4.14 52/67] efi/arm: preserve early mapping of UEFI memory map longer for BGRT

From: Ard Biesheuvel [ Upstream commit 3ea86495aef2f6de26b7cb1599ba350dd6a0c521 ] The BGRT code validates the contents of the table against the UEFI memory map, and so it expects it to be mapped when the code runs. On ARM, this is currently not the case, since we tear down the early mapping