On Tue, Feb 11, 2014 at 04:04:55PM +0530, Aneesh Kumar K.V wrote: > From: "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com> > > Archs like ppc64 doesn't do tlb flush in set_pte/pmd functions. ppc64 also > doesn't implement > flush_tlb_range. ppc64 require the tlb flushing to be batched within ptl > locks. The reason > to do that is to ensure that the hash page table is in sync with linux page > table. > We track the hpte index in linux pte and if we clear them without flushing > hash and drop the > ptl lock, we can have another cpu update the pte and can end up with double > hash. We also want > to keep set_pte_at simpler by not requiring them to do hash flush for > performance reason. > Hence cannot use them while updating _PAGE_NUMA bit. Add new functions for > marking pte/pmd numa > > Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgor...@suse.de> -- Mel Gorman SUSE Labs _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
