On Tue, 4 Apr 2023, Cédric Le Goater wrote:
Unrelated to KVM: Do you happen to know whether there are any problems when running 32-bit guests with TCG with the mac99 or g3beige machine while using qemu-system-ppc64 ?We removed rfi support for 64bit machine in QEMU 2.7. Commit a2e71b28e8 ("ppc: Fix rfi/rfid/hrfi/... emulation"). So a mac99 machine using a 970 CPU needs a 64 bit kernel. The rfi insn was deleted from the ISA ...
I don't know about that issue but maybe this does not really answer the question. AFAIK you could still run 32 bit guests with qemu-system-ppc64 and they seem to work. One could still get the qemu-system-ppc -M mac99 machine as qemu-system-ppc64 -M mac99 -cpu G4 but this is very confusing and nobody could guess it. Other machines should work the same in qemu-system-ppc64, the only concern is that some defines such as TARGET_ULONG are different between qemu-system-ppc and qemu-system-ppc64 and it's not known if this could cause any problems. It's more frequently happens that people try qemu-system-ppc64 -M mac99 when they want a G4 Mac and get confused that it emulates a G5 Mac instead which does not even work for anything than a Linux guest.
Regards, BALATON Zoltan
