[PATCH] x86-64: Fix partial page check to ensure unusable memory is not being marked usable.

Fix partial page check in e820_register_active_regions to ensure
partial pages are
not being marked as active in the memory pool.

Signed-off-by: Aaron Durbin <[e-mail]>
Signed-off-by: Andi Kleen <[e-mail]>

arch/x86_64/kernel/e820.c

···
 								>> 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 */