[PATCH v5 0/5] kexec: put bzImage and ramdisk above 4G for x86 64bit

[Simon Horman]

Hi Everyone,

there was some healthy discussion around the previous versions
of this series, but so far none on this version. Have we reached
consensus?

On Wed, Nov 28, 2012 at 02:09:49PM -0800, Yinghai Lu wrote:
> Now we have limit kdump reserved under 896M, because kexec has the limitation.
> and also bzImage need to stay under 4g.
> 
> kernel parts changes could be found at:
>         git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-x86-boot
> 
> here patches are for kexec tools to load bzImage and ramdisk above 4G
> acccording to new added boot header fields.
> 
> -v3: address review from Eric to use locate_hole at first.
>      use xloadflags instead.
> -v4: remove the restriction about bzImage not crossing GB boundary.
>      add real-mode fix for bzImage.
>      add --entry-32bit and --real-mode for skip bzImage64.
> -v5: use USE_EXT_BOOT_PARAMS bit in xloadflags.
> 
> Yinghai Lu (5):
>   kexec, x86: add boot header member for version 2.12
>   kexec, x86: clean boot_params area for entry-32bit path
>   kexec, x86: Fix bzImage real-mode booting
>   kexec, x86: put ramdisk/cmd_line above 4G for 64bit bzImage
>   kexec, x86_64: Load bzImage64 above 4G
> 
>  include/x86/x86-linux.h                |   32 +++-
>  kexec/arch/i386/include/arch/options.h |    4 +-
>  kexec/arch/i386/kexec-bzImage.c        |   80 +++++++--
>  kexec/arch/i386/x86-linux-setup.c      |   26 ++-
>  kexec/arch/x86_64/Makefile             |    1 +
>  kexec/arch/x86_64/kexec-bzImage64.c    |  335 ++++++++++++++++++++++++++++++++
>  kexec/arch/x86_64/kexec-x86_64.c       |    1 +
>  kexec/arch/x86_64/kexec-x86_64.h       |    5 +
>  8 files changed, 462 insertions(+), 22 deletions(-)
>  create mode 100644 kexec/arch/x86_64/kexec-bzImage64.c
> 
> -- 
> 1.7.7
>