Qemu SMP G4 CPUs

nvflash

New Tinkerer
May 15, 2025
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Just want to let people know we have done some patching to Qemu-system-PPC so it can now run with multiprocessors.

There are still some bugs, OS 9 freezes when 2nd CPU is accessed, seems Jaguar too, but OS X Tiger can run with up to 4 CPUs and even Classic Mode is able to utilize 4 CPUs in multiprocessor aware apps.


The FPU and Altivec emulation is lacking speed, but CPU integer performance scale very nice with a fast host CPU.

In Geekbench 2 4 G4 CPUs outpace a real Sawtooth with a single 2GHz 7448.
 
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