For security it is preferable that memory pages for executable code are not writable. So there should be only RX and RW pages. To enable this sections of EFI binaries must be page aligned. Furthermore .text and .data sections must be separated.
We already made the necessary changes for arm64 and riscv64. This series addresses the arm32 architecture.
v2: New patch to page align EFI binary section. Consider that 32-bit arm uses .rel and not .rela relocations and discard them as they are cannot be used in EFI binaries.
Heinrich Schuchardt (2): arm: page align EFI binary section arm: separate .data and .text sections of EFI binaries
arch/arm/lib/crt0_arm_efi.S | 44 +++++++++++++++++++++++++++--------- arch/arm/lib/elf_arm_efi.lds | 28 +++++++++++++++++------ 2 files changed, 54 insertions(+), 18 deletions(-)