[PATCH 0/7] ppc64: little endian zImage support

[Cédric Le Goater]

Hi,

A zImage is ppc64 elf executable file containing an elf section 
".kernel:vmlinux.strip" in which a vmlinux file is compressed. 

The support for such files is simply added by detecting the 
".kernel:vmlinux.strip" section when a ppc64 executable is loaded. 
If found, the embedded vmlinux file is uncompressed and loaded 
in lieu of the original zImage file.

Patch 1 adds a simple helper routine to look for a section. Patch 2
adds a proposal to bypass the check on the interp program header 
which is needed for zImage files on little endian. Patch 3 adds the 
core funtionnality and the final patches are ppc64 compile cleanups 
which poluted output.

Also available here :

     https://github.com/legoater/kexec-tools zimage

Comments are welcome ! 

Thanks
C.

Cédric Le Goater (7):
  kexec: add a elf_rel_find_section service
  kexec: bypass check on interp program header for ppc64le zImage
  ppc64: detect zImage files and load the uncompressed vmlinux
  ppc64, cleanup: cmdline_len variables are unused
  ppc64, cleanup: remove dead code in kexec-zImage-ppc64
  ppc64, cleanup: fix implicit declaration compile warnings
  ppc64, cleanup: fix unused variable compile warning

 kexec/arch/arm/kexec-elf-rel-arm.c       |    5 +
 kexec/arch/cris/kexec-elf-rel-cris.c     |    5 +
 kexec/arch/i386/kexec-elf-rel-x86.c      |    5 +
 kexec/arch/ia64/kexec-elf-rel-ia64.c     |    5 +
 kexec/arch/m68k/kexec-elf-rel-m68k.c     |    5 +
 kexec/arch/mips/kexec-elf-rel-mips.c     |    5 +
 kexec/arch/ppc/kexec-elf-rel-ppc.c       |    5 +
 kexec/arch/ppc64/crashdump-ppc64.c       |    3 +-
 kexec/arch/ppc64/kexec-elf-ppc64.c       |   23 +++-
 kexec/arch/ppc64/kexec-elf-rel-ppc64.c   |   35 +++--
 kexec/arch/ppc64/kexec-ppc64.c           |    1 +
 kexec/arch/ppc64/kexec-ppc64.h           |    2 +
 kexec/arch/ppc64/kexec-zImage-ppc64.c    |  214 ++++++++++++++----------------
 kexec/arch/s390/kexec-elf-rel-s390.c     |    5 +
 kexec/arch/sh/kexec-elf-rel-sh.c         |    5 +
 kexec/arch/x86_64/kexec-elf-rel-x86_64.c |    5 +
 kexec/kexec-elf-exec.c                   |    4 +
 kexec/kexec-elf-rel.c                    |   17 +++
 kexec/kexec-elf.h                        |    3 +
 19 files changed, 208 insertions(+), 144 deletions(-)

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1.7.10.4