We must keep track of these:
SMP perf / cache issue
http://lists.parisc-linux.org/pipermail/parisc-linux/2005-October/027547.html
<kyle> there's no doubt we flush too much.
<jejb> There was a 50% speed up in the UP case when I removed the excess flushing ... that's in the archives too
http://linux-voyager.bkbits.net:8080/parisc-noflush-2.6/patch@1.1371.687.11?nav=index.html|src/|src/arch|src/arch/parisc|src/arch/parisc/kernel|related/arch/parisc/kernel/cache.c|cset@1.1371.687.11
<ggg> willy: chada thinks we are missing an i-cache flush someplace...aliasing rules might clear the d-cache but not clear the i-cache on pa8800.