On 06/19/2016 11:12 PM, Benjamin Herrenschmidt wrote: > On Sun, 2016-06-19 at 19:23 +0200, Cédric Le Goater wrote: >>> You can run a 32-bit OS or firmware on ppc64, but it needs to know that >>> it's running on a 64-bit chip and do a few things differently. >> >> yes sure but qemu would still allow rfi under 64bit CPUs, that is what >> I was concerned about. Is that ok ? > > Why ? A real CPU won't allow it, why should we ?
That is how I feel also. So, why don't we just remove the op code in the instruction sets from the 32bit CPUs instead of leaving it and testing for PPC_SEGMENT_64B ? or is there some reasons we want to keep it around ? Cheers, C.
