Add support to check for overlaps with e820 entries.
In case the 64bit pci io window has conflicts move it down.
The only known case where this happens is AMD processors
with 1TB address space which has some space just below
1TB reserved for HT.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Rename memmap.c to e820map.c as the code in that file only deals with
maintaining the e820 map. Move all the e820 definitions to new file
e820map.h and use a consistent "e820_" prefix on all exported
functions.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>