xen: make sure xen_extra_mem_start is beyond all non-RAM e820

If Xen gives us non-RAM E820 entries (dom0 only, typically), then
make sure the extra RAM region is beyond them.  It's OK for
the extra space to grow into E820 regions, however.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge 2010-09-02 17:07:03 -07:00
parent 42ee1471e9
commit 36bc251b87

View file

@ -167,7 +167,8 @@ char * __init xen_memory_setup(void)
extra_pages += PFN_DOWN(end - mem_end);
}
}
} else if (map[i].type != E820_RAM)
xen_extra_mem_start = end;
if (map[i].size > 0)
e820_add_region(map[i].addr, map[i].size, map[i].type);
}