Re: [Qemu-devel] [PATCH v8 3/8] i386: Add new property to control cache info

[Eduardo Habkost <ehabkost@redhat.com>]

On Fri, May 11, 2018 at 08:21:50PM +0000, Moger, Babu wrote:
> 
> > -----Original Message-----
> > From: Eduardo Habkost [mailto:ehabkost@redhat.com]
> > Sent: Friday, May 11, 2018 2:22 PM
> > To: Moger, Babu <Babu.Moger@amd.com>
> > Cc: mst@redhat.com; marcel.apfelbaum@gmail.com; pbonzini@redhat.com;
> > rth@twiddle.net; mtosatti@redhat.com; qemu-devel@nongnu.org;
> > kvm@vger.kernel.org; geoff@hostfission.com; kash@tripleback.net
> > Subject: Re: [PATCH v8 3/8] i386: Add new property to control cache info
> > 
> > On Thu, May 10, 2018 at 03:41:43PM -0500, Babu Moger wrote:
> > > The property legacy-cache will be used to control the cache information.
> > > If user passes "-cpu legacy-cache" then older information will
> > > be displayed even if the hardware supports new information. Otherwise
> > > use the statically loaded cache definitions if available.
> > >
> > > Signed-off-by: Babu Moger <babu.moger@amd.com>
> > > Tested-by: Geoffrey McRae <geoff@hostfission.com>
> > > ---
> > >  include/hw/i386/pc.h |  8 ++++
> > >  target/i386/cpu.c    | 97 ++++++++++++++++++++++++++++++++-----------
> > -
> > >  target/i386/cpu.h    |  5 +++
> > >  3 files changed, 84 insertions(+), 26 deletions(-)
> > >
> > > diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> > > index 2e834e6ded..df15deefca 100644
> > > --- a/include/hw/i386/pc.h
> > > +++ b/include/hw/i386/pc.h
> > > @@ -304,6 +304,14 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t);
> > >  int e820_get_num_entries(void);
> > >  bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
> > >
> > > +#define PC_COMPAT_2_12 \
> > > +    HW_COMPAT_2_12 \
> > > +    {\
> > > +        .driver   = TYPE_X86_CPU,\
> > > +        .property = "legacy-cache",\
> > > +        .value    = "on",\
> > > +    },
> > 
> > This isn't enough if the pc-*-2.12 machine-type isn't using the
> > macro.
> > 
> > Before we do this, we need a commit similar to commit
> > df47ce8af4a5, but adding pc-*-2.13 machine-types.
> 
> Ok. Sure. I think I got it. Will add pc-*-2.13 machine-types in v9 series. 

Thanks.  If you submit v9, please use the x86-next tree as base
so you don't need to resubmit the patches that I have already
queued.  See MAINTAINERS for the git URL.

-- 
Eduardo