Linux 6.6 To Make It Easier To Enable Partial SMT For POWER

While Simultaneous Multi-Threading (SMT) on Intel/AMD x86_64 processors is limited to providing one additional thread per core, SMT on IBM POWER hardware can provide 4-way and even 8-way SMT for some processor models. With Linux 6.6 the /sys/devices/system/cpu/smt/control interface is being extended to allow greater control over managing partial SMT states in cases of the CPUs supporting more than 2-way SMT at Linux run-time...