Re: [PATCH v21 01/20] s390x/cpu topology: add s390 specifics to CPU topology

[Nina Schoetterl-Glausch <nsg@linux.ibm.com>]

On Fri, 2023-07-21 at 13:24 +0200, Pierre Morel wrote:
> 
> On 7/18/23 18:31, Nina Schoetterl-Glausch wrote:
> > Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
> > 
> > Some notes below.
> > 
> > The s390x/ prefix in the title might suggest that this patch
> > is s390 specific, but it touches common files.
> 
> 
> Right.
> 
> What do you suggest?
> 
> I can cut it in two or squash it with patch number 2.
> 
> The first idea was to separate the patch to ease the review but the
> functionality introduced in patch 1 do only make sense with patch 2.
> 
> So I would be for squashing the first two patches.
> 
> ?

Oh, I'd just change the title.

CPU topology: extend with s390 specifics

or similar, it was just a nit not to create the impression that the
patch only touches s390 stuff.
> 
> 
> > 
> > On Fri, 2023-06-30 at 11:17 +0200, Pierre Morel wrote:
> > > S390 adds two new SMP levels, drawers and books to the CPU
> > > topology.
> > > The S390 CPU have specific topology features like dedication
> > S390 CPUs have specific topology features like dedication and
> > entitlement. These indicate to the guest information on host
> > vCPU scheduling and help the guest make better scheduling
> > decisions.
> > 
> > > and entitlement to give to the guest indications on the host
> > > vCPUs scheduling and help the guest take the best decisions
> > > on the scheduling of threads on the vCPUs.
> > > 
> > > Let us provide the SMP properties with books and drawers levels
> > > and S390 CPU with dedication and entitlement,
> > > 
> > > Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
> > > ---
> > >   qapi/machine-common.json            | 22 +++++++++++++
> > >   qapi/machine.json                   | 21 ++++++++++---
> > >   include/hw/boards.h                 | 10 +++++-
> > >   include/hw/qdev-properties-system.h |  4 +++
> > >   target/s390x/cpu.h                  |  6 ++++
> > >   hw/core/machine-smp.c               | 48
> > > ++++++++++++++++++++++++---
> > > --
> > >   hw/core/machine.c                   |  4 +++
> > >   hw/core/qdev-properties-system.c    | 13 ++++++++
> > >   hw/s390x/s390-virtio-ccw.c          |  2 ++
> > >   softmmu/vl.c                        |  6 ++++
> > >   target/s390x/cpu.c                  |  7 +++++
> > >   qapi/meson.build                    |  1 +
> > >   qemu-options.hx                     |  7 +++--
> > >   13 files changed, 137 insertions(+), 14 deletions(-)
> > >   create mode 100644 qapi/machine-common.json
> > > 
> > > diff --git a/qapi/machine-common.json b/qapi/machine-common.json
> > > new file mode 100644
> > > index 0000000000..bc0d76829c
> > > --- /dev/null
> > > +++ b/qapi/machine-common.json
> > > @@ -0,0 +1,22 @@
> > > +# -*- Mode: Python -*-
> > > +# vim: filetype=python
> > > +#
> > > +# This work is licensed under the terms of the GNU GPL, version
> > > 2 or
> > > later.
> > > +# See the COPYING file in the top-level directory.
> > > +
> > > +##
> > > +# = Machines S390 data types
> > Common definitions for machine.json and machine-target.json
> > 
> > 
> > [...]