kexec-tools and multiboot breakage

Simon Horman horms at
Tue Jan 14 22:48:33 EST 2014

On Wed, Jan 15, 2014 at 01:25:49PM +1000, Peter Chubb wrote:
> Hi Simon,
>    When you get a moment, please check out
> Quick summary:
>   If your kernel is configured to protect the first few pages of
>   physical memory, then low memory doesn't start at location 0 --- so
>   when scanning the memory ranges from /proc/iomem, the code in
>   kexec/arch/i386/kexec-multiboot-x86.c never fills in mem_lower.
>   I think it's safe to assume that if a memory segment starts at 64k or
>   lower, it can be extended to location 0 because of the kernel
>   protection on a PC99-style architecture.

Hi Peter,

that approach seems reasonable to me. Could you formally post
the patch to the kexec list with me CCed? I would like a Signed-off-by
line. Thanks.

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