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SubjectRe: [PATCH] x86, boot: document intermediates more clearly
On Fri, Oct 31, 2014 at 09:22:04AM -0700, Kees Cook wrote:
> This adds a comment detailing the various intermediate files used to build
> the bootable decompression image for the x86 kernel.
>
> Signed-off-by: Kees Cook <keescook@chromium.org>

Definitely the documentation I wish I had long ago when trying to figure
out the twisty maze of binaries.

Reviewed-by: Josh Triplett <josh@joshtriplett.org>

> arch/x86/boot/compressed/Makefile | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
> index be1e07d4b596..44a866b85c6f 100644
> --- a/arch/x86/boot/compressed/Makefile
> +++ b/arch/x86/boot/compressed/Makefile
> @@ -3,6 +3,18 @@
> #
> # create a compressed vmlinux image from the original vmlinux
> #
> +# vmlinuz is:
> +# decompression code (*.o)
> +# asm globals (piggy.S), including:
> +# vmlinux.bin.(gz|bz2|lzma|...)
> +#
> +# vmlinux.bin is:
> +# vmlinux stripped of debugging and comments
> +# vmlinux.bin.all is:
> +# vmlinux.bin + vmlinux.relocs
> +# vmlinux.bin.(gz|bz2|lzma|...) is:
> +# (see scripts/Makefile.lib size_append)
> +# compressed vmlinux.bin.all + u32 size of vmlinux.bin.all
>
> targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
> vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4
> --
> 1.9.1
>
>
> --
> Kees Cook
> Chrome OS Security


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