Re: [PATCH 4/4] spapr: Allow up to 8 threads SMT on POWER8 and newer

2023-06-20 Thread Nicholas Piggin
On Tue Jun 20, 2023 at 7:27 PM AEST, Harsh Prateek Bora wrote: > > > On 6/5/23 16:53, Nicholas Piggin wrote: > > PPC TCG now supports multi-threaded CPU configuration for non-hypervisor > > state. This requires PIR and TIR be set, because that's how sibling thread > > matching is done. > > > > spa

Re: [PATCH 4/4] spapr: Allow up to 8 threads SMT on POWER8 and newer

2023-06-20 Thread Harsh Prateek Bora
On 6/5/23 16:53, Nicholas Piggin wrote: PPC TCG now supports multi-threaded CPU configuration for non-hypervisor state. This requires PIR and TIR be set, because that's how sibling thread matching is done. spapr's nested-HV capability does not currently coexist with SMT. This is quite analogo