On Thu, 7 Aug 2014, Rob Herring wrote: > On Thu, Aug 7, 2014 at 10:15 AM, Max Filippov <jcmvb...@gmail.com> wrote: > > Hi, > > > > On Wed, Aug 6, 2014 at 11:32 PM, Kees Cook <keesc...@chromium.org> wrote: > >> ARM is different from other architectures in that fixmap pages are indexed > >> with a positive offset from FIXADDR_START. Other architectures index with > >> a negative offset from FIXADDR_TOP. In order to use the generic fixmap.h > > > > Does anybody know if there's any reason why generic fixmap.h uses negative > > offsets? It complicates things with no obvious benefit if you e.g. try to > > align > > virtual address in the fixmap region with physical page color (that's why > > I've > > switched xtensa to positive fixmap addressing in v3.17). > > No, but each arch doing it differently is even more annoying.
Why not switching everybody to positive offsets then? Nicolas -- 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/
