It actually did work too!

#0  report_unimplemented (
    file_name=0xfb3d624 "aztec/hotspot/src/cpu/ppc/vm/icache_ppc.cpp",
    line_no=65)
    at aztec/hotspot/src/share/vm/utilities/debug.cpp:241
#1  0xf5b8405c in ?? ()
#2  0x0f760d84 in AbstractICache::invalidate_range (start=0xf5b86400 "",
    nbytes=15)
    at aztec/hotspot/src/share/vm/runtime/icache.cpp:102

Obviously this is like “so what?” for all you JIT guys but I’m kind of stunned here.