[PATCH 0/3] kexec: Add support for UKI format kernel

[Pingfan Liu]

As a UEFI PE format kernel image becomes more popular, there is a need
for kexec to reboot those kinds of images.

After the introduction of the UKI (another PE), at present, there are
three competitive methods to support that goal, but all of them have
pros and cons.[1] It seems that none of them can be accepted in the near
future.  Therefore, we are resorting to the user space kexec-tools to
parse the UKI format for the time being.

By parsing the UKI, systemd-stub is stepped around and PCM will not affect
the boot up of the second system.

[1]: https://github.com/rhkdump/kexec_uefi/blob/main/overview.md#the-competitive-solutions

Cc: Simon Horman <horms at kernel.org>
Cc: Eric Biederman <ebiederm at xmission.com>
Cc: Baoquan He <bhe at redhat.com>
Cc: Dave Young <dyoung at redhat.com>
Cc: Ard Biesheuvel <ardb at kernel.org>
Cc: Jan Hendrik Farr <kernel at jfarr.cc>
Cc: Philipp Rudo <prudo at redhat.com>
Cc: Lennart Poettering <mzxreary at 0pointer.de>

Cc: kexec at lists.infradead.org

Pingfan Liu (3):
  kexec: Introduce default_initrd_fd to pass internal initrd information
  kexec: Introduce UKI image parser
  arm64: Support UKI image format

 include/pe.h                         | 104 +++++++++++++++++++++++
 kexec/Makefile                       |   1 +
 kexec/arch/arm64/kexec-arm64.c       |   1 +
 kexec/arch/arm64/kexec-image-arm64.c |   3 +-
 kexec/arch/x86_64/kexec-bzImage64.c  |   3 +-
 kexec/kexec-uki.c                    | 122 +++++++++++++++++++++++++++
 kexec/kexec.c                        |   2 +
 kexec/kexec.h                        |   5 ++
 8 files changed, 239 insertions(+), 2 deletions(-)
 create mode 100644 include/pe.h
 create mode 100644 kexec/kexec-uki.c

-- 
2.41.0