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-rw-r--r--arch/x86_64/kernel/e820.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c
index a75c829c2b0..6fe191c5808 100644
--- a/arch/x86_64/kernel/e820.c
+++ b/arch/x86_64/kernel/e820.c
@@ -278,7 +278,7 @@ e820_register_active_regions(int nid, unsigned long start_pfn,
>> PAGE_SHIFT;
/* Skip map entries smaller than a page */
- if (ei_startpfn > ei_endpfn)
+ if (ei_startpfn >= ei_endpfn)
continue;
/* Check if end_pfn_map should be updated */
@@ -594,7 +594,9 @@ static int __init parse_memmap_opt(char *p)
* size before original memory map is
* reset.
*/
+ e820_register_active_regions(0, 0, -1UL);
saved_max_pfn = e820_end_of_ram();
+ remove_all_active_ranges();
#endif
end_pfn_map = 0;
e820.nr_map = 0;