This is a follow-up to Chester's series [0] to enable IMA to the secure
boot state of arm64 platforms, which is EFI based.

This v4 implements the changes I suggested to Chester, in particular:
- disregard MokSbState when factoring out secure boot mode discovery
- turn the x86 IMA arch code into shared code for all architectures.

This reduces the final patch to a one liner enabling a Kconfig option
for arm64 when EFI is enabled.

Build tested only.

[0] https://lore.kernel.org/linux-arm-kernel/20201030060840.1810-1-clin@suse.com/ (local)

Cc: zohar@linux.ibm.com
Cc: jmorris@namei.org
Cc: serge@hallyn.com
Cc: dmitry.kasatkin@gmail.com
Cc: catalin.marinas@arm.com
Cc: will@kernel.org
Cc: clin@suse.com
Cc: x86@kernel.org
Cc: jlee@suse.com
Cc: linux-integrity@vger.kernel.org,
Cc: linux-arm-kernel@lists.infradead.org
  
Chester Lin (3):
  efi: generalize efi_get_secureboot
  ima: generalize x86/EFI arch glue for other EFI architectures
  arm64/ima: add ima_arch support

 arch/arm64/Kconfig                            |  1 +
 arch/x86/boot/compressed/Makefile             |  2 +-
 arch/x86/include/asm/efi.h                    |  3 ++
 arch/x86/kernel/Makefile                      |  2 -
 drivers/firmware/efi/libstub/efistub.h        |  2 +
 drivers/firmware/efi/libstub/secureboot.c     | 41 +++++++----------
 include/linux/efi.h                           | 23 +++++++++-
 security/integrity/ima/Makefile               |  4 ++
 .../integrity/ima/ima_efi.c                   | 45 +++++--------------
 9 files changed, 60 insertions(+), 63 deletions(-)
 rename arch/x86/kernel/ima_arch.c => security/integrity/ima/ima_efi.c (60%)

-- 
2.17.1