On 12/06/2013 07:25 PM, Christoph Lameter wrote: > On Fri, 6 Dec 2013, Rik van Riel wrote: > >>> When you start migrating a page a special page migration entry is >>> created that will trap all accesses to the page. You can safely flush when >>> the migration entry is there. Only allow a new PTE/PMD to be put there >>> *after* the tlb flush. >> >> A PROT_NONE or NUMA pte is just as effective as a migration pte. >> The only problem is, the TLB flush was not always done... > > Ok then what are you trying to fix? It would help if you had actually read the patch. -- All rights reversed -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>