[PATCH v6 0/3] luo: convert serialized ptr to KHOSER_PTR

[Tarun Sahu <tarunsahu@google.com>]

Convert raw serialized_data to KHO serializeable pointer (KHOSER_PTR).
This series also takes care of resolving the bug with memfd of using
phys_to_virt before checking the args->serialized_data value.

Tested ./luo_kexec_simple --stage 1 && 2

v6 <- v5
	-Compilation error fix
	-Nit comment fixes
v5 <- v4
	-separate the memfd_luo fix in a new commit to allow backport if
	needed.

v4 <- RESEND V3
	-use only KHOSER_COPY_PTR and have compiler time check for type
	excluding void * types. Remove TYPE(UN)SAFE variants.
RESEND V3:
	-Sent incorrect thread format earlier, this one is with correct
	one.
v3 <- v2
	-Rebased on top of liveupdate/next
v2 <- v1
	-Use KHOSER_PTR across liveupdate files instead of only memfd_luo

Tarun Sahu (3):
  mm/memfd_luo: validate serialized_data before conversion
  kho: add KHOSER_COPY_PTR to allow phys copy of serialized ptr
  luo: Update serialized data to use KHOSER_PTR

 include/linux/kho/abi/kexec_handover.h | 11 +++++++++++
 include/linux/kho/abi/luo.h            |  5 +++--
 include/linux/liveupdate.h             |  4 ++--
 kernel/liveupdate/luo_file.c           | 24 ++++++++++++------------
 mm/memfd_luo.c                         | 16 +++++++---------
 5 files changed, 35 insertions(+), 25 deletions(-)


base-commit: e98a9c61721c14bcd29f11f4802e52e908701f7a
-- 
2.55.0.rc0.799.gd6f94ed593-goog