Scott Wood <scottw...@freescale.com> writes: > On Tue, 2015-09-22 at 12:18 +0530, Aneesh Kumar K.V wrote: >> Scott Wood <scottw...@freescale.com> writes: >> >> > On Mon, 2015-09-21 at 12:10 +0530, Aneesh Kumar K.V wrote: >> > > Hi All, >> > > >> > > This patch series attempt to update book3s 64 linux page table format to >> > > make it more flexible. Our current pte format is very restrictive and we >> > > overload multiple pte bits. This is due to the non-availability of free >> > > bits >> > > in pte_t. We use pte_t to track the validity of 4K subpages. This patch >> > > series free up pte_t of 11 bits by moving 4K subpage tracking to the >> > > lower half of PTE page. The pte format is updated such that we have a >> > > better method for identifying a pte entry at pmd level. This will also >> > > enable >> > > us to implement hugetlb migration(not yet done in this series). >> > > >> > > Before making the changes to the pte format, I am splitting the >> > > pte header definition such that we now have the below layout for headers >> > > >> > > book3s >> > > 32 >> > > hash.h pgtable.h >> > > 64 >> > > hash.h pgtable.h hash-4k.h hash-64k.h >> > > booke >> > > 32 >> > > pgtable.h pte-40x.h pte-44x.h pte-8xx.h pte-fsl-booke.h >> > > 64 >> > > pgtable-4k.h pgtable-64k.h pgtable.h >> > >> > 40x and 8xx are not booke. Is there a better name that can be used for >> > this >> > directory? Maybe "nohash", similar to arch/powerpc/mm/tlb_nohash.c? >> > >> >> I looked at Documentation/powerpc/cpu_families.txt to name the headers. >> It lists then below booke. > > It lists 40x as booke (there was some question about that when > cpu_families.txt was added... I guess you could call it "proto-booke", > though it doesn't use CONFIG_BOOKE in Linux), but 8xx is in its own category. > > In any case, "nohash" is the term used elsewhere.
How about using swtlb ? (nohash always confused me, It would be nice to be explict and us software tlb ?) -aneesh _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev