On Tue, Feb 19, 2002 at 05:12:38PM -0800, Jun Sun wrote: > > It's gotta be done. I mean, the last I heard (which was a long > > time ago) mips64 Linux was keeping the CPU node number in > > a watchpoint register (or something equally unwholesome) > > It seems that people are getting smarter by putting cpu id to > context register. In fact isn't this part of new MIPS > standard? The context register is actually intended to be used for indexing a flat 4mb array of pagetables on a 32-bit processor. It's a bit ill-defined on R4000-class processors as it assumes a size of 8 bytes per pte, so cannot be used in the Linux/MIPS kernel without shifting bits around. Also in case of Linux it means entering the world of cache aliases ... Ralf
