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

[H. Peter Anvin]

On 01/11/2013 11:59 AM, Yinghai Lu wrote:
> 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.
> 

Who is using it then, since you seem to know?

	-hpa