Re: [Qemu-devel] [PATCH] xen: make xen-platform a default device

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

On Thu, May 22, 2014 at 10:57:54AM +0000, Chen, Tiejun wrote:
> > -----Original Message-----
> > From: qemu-devel-bounces+tiejun.chen=intel.com@nongnu.org
> > [mailto:qemu-devel-bounces+tiejun.chen=intel.com@nongnu.org] On Behalf Of
> > Michael S. Tsirkin
> > Sent: Thursday, May 22, 2014 3:22 PM
> > To: Gerd Hoffmann
> > Cc: qemu-devel@nongnu.org; Anthony Liguori
> > Subject: Re: [Qemu-devel] [PATCH] xen: make xen-platform a default device
> > 
> > On Thu, May 22, 2014 at 09:20:50AM +0200, Gerd Hoffmann wrote:
> > > Patch hooks up the xen platform device to the default device code we
> > > have in qemu.  Two effects:
> > >
> > >   (1) The device will not be created in case -nodefaults is specified
> > >       on the command line.
> > >   (2) Autocreating the device is also turned off in case xen-platform
> > >       is added manually via -device.
> > >
> > > With the patch applied you can move the xen-platform device to some
> > > other place with a simple 'qemu -device xen-platform,addr=$slot'.
> > >
> > > Tested-by: Tiejun Chen <tiejun.chen@intel.com>
> 
> Sorry, I'm not sure if this works well as Gerd expect.
> 
> I already reply something online, please take a look at that before apply. 
> 
> Thanks
> Tiejun

No worries, I'll wait.

> > > Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> > 
> > Applied, thanks!
> > 
> > > ---
> > >  hw/i386/pc_piix.c    | 2 +-
> > >  include/hw/xen/xen.h | 1 +
> > >  vl.c                 | 3 +++
> > >  3 files changed, 5 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index
> > > eaf3e61..f987d03 100644
> > > --- a/hw/i386/pc_piix.c
> > > +++ b/hw/i386/pc_piix.c
> > > @@ -385,7 +385,7 @@ static void pc_xen_hvm_init(QEMUMachineInitArgs
> > *args)
> > >      pc_init_pci(args);
> > >
> > >      bus = pci_find_primary_bus();
> > > -    if (bus != NULL) {
> > > +    if (bus != NULL && default_xenplatform) {
> > >          pci_create_simple(bus, -1, "xen-platform");
> > >      }
> > >  }
> > > diff --git a/include/hw/xen/xen.h b/include/hw/xen/xen.h index
> > > 85fda3d..b350413 100644
> > > --- a/include/hw/xen/xen.h
> > > +++ b/include/hw/xen/xen.h
> > > @@ -20,6 +20,7 @@ enum xen_mode {
> > >
> > >  extern uint32_t xen_domid;
> > >  extern enum xen_mode xen_mode;
> > > +extern int default_xenplatform;
> > >
> > >  extern bool xen_allowed;
> > >
> > > diff --git a/vl.c b/vl.c
> > > index 709d8cd..673148e 100644
> > > --- a/vl.c
> > > +++ b/vl.c
> > > @@ -226,6 +226,7 @@ static int default_floppy = 1;  static int
> > > default_cdrom = 1;  static int default_sdcard = 1;  static int
> > > default_vga = 1;
> > > +int default_xenplatform = 1;
> > >
> > >  static struct {
> > >      const char *driver;
> > > @@ -247,6 +248,7 @@ static struct {
> > >      { .driver = "isa-cirrus-vga",       .flag = &default_vga       },
> > >      { .driver = "vmware-svga",          .flag = &default_vga       },
> > >      { .driver = "qxl-vga",              .flag = &default_vga       },
> > > +    { .driver = "xen-platform",         .flag = &default_xenplatform },
> > >  };
> > >
> > >  static QemuOptsList qemu_rtc_opts = { @@ -4101,6 +4103,7 @@ int
> > > main(int argc, char **argv, char **envp)
> > >          default_monitor = 0;
> > >          default_net = 0;
> > >          default_vga = 0;
> > > +        default_xenplatform = 0;
> > >      }
> > >
> > >      if (is_daemonized()) {
> > > --
> > > 1.8.3.1