On Fri, Feb 26, 2016 at 08:50:49AM +0530, Aneesh Kumar K.V wrote: > Now that we have _PAGE_READ use that to implement prot none. With this > prot_none is _PAGE_PRESENT with none of the access bits set. While > hashing we map that to PP bit 00. > > With this implementation, we will now take a prot fault for prot none > ptes, whereas before, we never inserted such a pte to hash. Hence we > always got nohpte fault before. > > This is in preparation to remove _PAGE_USER from book3s 64
Mostly looks good, but I have a comment: > @@ -176,10 +177,12 @@ > #define PAGE_SHARED __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW) > #define PAGE_SHARED_X __pgprot(_PAGE_BASE | _PAGE_USER | _PAGE_RW | \ > _PAGE_EXEC) Don't we need _PAGE_READ in PAGE_SHARED[_X] now? Paul. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
