Wii U Linux does not support QEMU KVM:

The Wii does not support virtualisation, so I cant use KVM hardware acceleration for QEMU PowerPC software.
Other PowerPC devices like the PS3 or xbox 360 could though.
You can check for KVM support by:

Option 1. egrep -c '(vmx|svm)' /proc/cpuinfo

Option 2:
sudo apt install cpu-checker
sudo kvm-ok


Sources: Linux KVM wiki, Phoenixnap
Date: February 23rd, 2022

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