On Tue May 16, 2023 at 6:44 PM AEST, Cédric Le Goater wrote: > On 5/15/23 18:01, Nicholas Piggin wrote: > > QEMU's PVR value for POWER9 DD2.0 has chip type 1, which is the SMT4 > > "small core" type that OpenPOWER processors use. QEMU's PVR for all > > other POWER9/10 have chip type 0, which "enterprise" systems use. > > > > The difference does not really matter to QEMU (because it does not care > > about SMT mode in the target), but for consistency all PVRs should use > > the same chip type. We'll go with the SMT4 OpenPOWER type. > > > > Signed-off-by: Nicholas Piggin <npig...@gmail.com> > > --- > > This is a replacement for > > > > https://lists.gnu.org/archive/html/qemu-ppc/2022-03/msg00227.html > > > > But the chip type is changed to 1 instead of 0, because that's the > > more familiar SM4 / small core CPU. > > Will small cores POWER10 CPU be available ?
I don't know the answer to that, but even big core POWER10s need non-standard OPAL firmware to use bare metal... Small core is nicer for Linux to use and matches POWER9 so I did that. In practice I don't think it will actually matter anywhere because we don't do SMT. Thanks, Nick
