On 07/04/14 16:10, Mel Gorman wrote: > _PAGE_NUMA is currently an alias of _PROT_PROTNONE to trap NUMA hinting > faults. As the bit is shared care is taken that _PAGE_NUMA is only used in > places where _PAGE_PROTNONE could not reach but this still causes problems > on Xen and conceptually difficult.
The problem with Xen guests occurred because mprotect() /was/ confusing PROTNONE mappings with _PAGE_NUMA and clearing the non-existant NUMA hints. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
