Re: [Qemu-devel] [PATCH V2] hw/pci: disable pci-bridge's shpc by default

["Michael S. Tsirkin" <mst@redhat.com>]

On Tue, Jan 24, 2017 at 06:23:49PM +0200, Marcel Apfelbaum wrote:
> On 01/11/2017 01:46 PM, Marcel Apfelbaum wrote:
> > The shpc component is optional while  ACPI hotplug is used
> > for hot-plugging PCI devices into a PCI-PCI bridge.
> > Disabling the shpc by default will make slot 0 usable at boot time
> > and not only for hot-plug, without loosing any functionality.
> > Older machines will have shpc enabled for compatibility reasons.
> > 
> > Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
> > ---
> > v1 -> v2:
> >  - Moved the compat property to HW_COMPAT_2_8
> > 
> 
> Hi Michael,
> Can you please merge this?
> 
> Thanks,
> Marcel

Yes but pls rebase to master.

> >  hw/pci-bridge/pci_bridge_dev.c | 2 +-
> >  include/hw/compat.h            | 6 +++++-
> >  2 files changed, 6 insertions(+), 2 deletions(-)
> > 
> > diff --git a/hw/pci-bridge/pci_bridge_dev.c b/hw/pci-bridge/pci_bridge_dev.c
> > index 5dbd933..647ad80 100644
> > --- a/hw/pci-bridge/pci_bridge_dev.c
> > +++ b/hw/pci-bridge/pci_bridge_dev.c
> > @@ -163,7 +163,7 @@ static Property pci_bridge_dev_properties[] = {
> >      DEFINE_PROP_ON_OFF_AUTO(PCI_BRIDGE_DEV_PROP_MSI, PCIBridgeDev, msi,
> >                              ON_OFF_AUTO_AUTO),
> >      DEFINE_PROP_BIT(PCI_BRIDGE_DEV_PROP_SHPC, PCIBridgeDev, flags,
> > -                    PCI_BRIDGE_DEV_F_SHPC_REQ, true),
> > +                    PCI_BRIDGE_DEV_F_SHPC_REQ, false),
> >      DEFINE_PROP_END_OF_LIST(),
> >  };
> > 
> > diff --git a/include/hw/compat.h b/include/hw/compat.h
> > index 4fe44d1..428c127 100644
> > --- a/include/hw/compat.h
> > +++ b/include/hw/compat.h
> > @@ -2,7 +2,11 @@
> >  #define HW_COMPAT_H
> > 
> >  #define HW_COMPAT_2_8 \
> > -    /* empty */
> > +    {\
> > +        .driver   = "pci-bridge",\
> > +        .property = "shpc",\
> > +        .value    = "on",\
> > +    },
> > 
> >  #define HW_COMPAT_2_7 \
> >      {\
> >