[PATCH 5/5] kexec: X86: Pass memory ranges via e820 table instead of memmap= boot parameter

[Yinghai Lu]

On Thu, Apr 11, 2013 at 5:26 AM, Thomas Renninger <trenn at suse.de> wrote:
> Currently ranges are passed via kernel boot parameters:
> memmap=exactmap memmap=X#Y memmap=
>
> Pass them via e820 table directly instead.

how to address "saved_max_pfn" referring in kernel?

kernel need to use saved_max_pfn from old e820 in
drivers/char/mem.c::read_oldmem()

mips and powerpc they are passing that from command line "savemaxmem="

x86 should use that too?

Thanks

Yinghai