Re: [Qemu-devel] [PATCH] Xen PCI passthrough: convert to realize()

[Cao jin]

On 12/23/2015 10:03 PM, Stefano Stabellini wrote:
> On Wed, 23 Dec 2015, Cao jin wrote:
[...]
> > > The patch as is fails to build:
> > >
> > > qemu/hw/xen/xen_pt_config_init.c: In function ‘xen_pt_config_init’:
> > > qemu/hw/xen/xen_pt_config_init.c:2061:42: error: ‘rc’ may be used
> > > uninitialized in this func
> >
> > really weird...last patch you remind me that it cannot compile, make me find
> > that my computer didn`t install xen-devel package, then I installed it right
> > away. But this time, it really can compile on my computer....anyway, I will
> > check it out later.
"it really can compile on my computer" means when I press make, the lines:

  CC    x86_64-softmmu/hw/xen/xen_pt_config_init.o
  LINK  x86_64-softmmu/qemu-system-x86_64

flash into the screen.

> I bet you don't have Xen PCI passthrough enabled. Do you have
> CONFIG_XEN_PCI_PASSTHROUGH=y in i386-softmmu/config-target.mak?

I am not sure before, I am not aware of this before:-[ this time, I did 
with:

  $ ./configure --enable-debug --enable-xen-pci-passthrough 
--target-list=x86_64-softmmu
  $ make clean; make

It can compile. Then I checked x86_64-softmmu/config-target.mak: the 
CONFIG_XEN_PCI_PASSTHROUGH=y does exist.

[...]
>

--
Yours Sincerely,

Cao Jin