On Mon, 22 Feb, at 03:25:54PM, Ard Biesheuvel wrote:

Recent UEFI versions expose permission attributes for runtime services
memory regions, either in the UEFI memory map or in the separate memory
attributes table.  This allows the kernel to map these regions with
stricter permissions, rather than the RWX permissions that are used by
default. So wire this up in our mapping routine.

Signed-off-by: Ard Biesheuvel <redacted>
---
 arch/arm/include/asm/efi.h |  1 +
 arch/arm/kernel/efi.c      | 41 ++++++++++++++++++++
 2 files changed, 42 insertions(+)

Looks fine from an EFI perspective, but it would be nice for somebody
else with ARM knowledge to ACK it.