On Thu, Aug 7, 2014 at 7:32 PM, Nicolas Pitre <nicolas.pi...@linaro.org> wrote: > 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?
I can cook a patch if people agree that that'd be good. -- Thanks. -- Max -- 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/
