On Mon, 2012-07-23 at 09:56 +1000, Paul Mackerras wrote: > > That indicate we should not mask the top 16 bits. So remove the > same. > > Older versions of the architecture (2.02 and earler) require the > masking, so we can't just unconditionally remove it, since that would > potentially break POWER5 and PPC970. People are definitely still > running Linux bare-metal on PPC970s (though arguably not on POWER5).
Are you sure ? I couldn't convince myself ... the old architectures say that it only uses some of the bits but it doesn't mark the other ones as "reserved" (as in must be 0). (At least 1.x, I haven't looked at 2.x with x < 03) Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
