[PATCH] x86 e820: only void usable memory areas in memmap=exactmap case

[Yinghai Lu]

On Fri, Jan 11, 2013 at 10:24 AM, Thomas Renninger <trenn at suse.de> wrote:
>> We may need to keep exactmap intact.
> Why?
> Kexec/kdump should have been the only user?
> If older/current kexec calls still add ACPI maps via memmap=X#Y,
> they should already exist in the original e820 map and fall off or
> get glued to one region if (wrongly) overlapping via sanitize_map.

No, kexec/kdump is not the only user for memmap=exactmap.

Thanks

Yinghai