Re: [PATCH] fix qemu build with xen-4.18.0

["Richard W.M. Jones" <rjones@redhat.com>]

On Fri, Dec 08, 2023 at 08:47:07AM +0000, Richard W.M. Jones wrote:
> (Adding Xen maintainers)
> 
> On Thu, Dec 07, 2023 at 11:12:48PM +0000, Michael Young wrote:
> > Builds of qemu-8.2.0rc2 with xen-4.18.0 are currently failing
> > with errors like
> > ../hw/arm/xen_arm.c:74:5: error: ‘GUEST_VIRTIO_MMIO_SPI_LAST’ undeclared (first use in this function)
> >    74 |    (GUEST_VIRTIO_MMIO_SPI_LAST - GUEST_VIRTIO_MMIO_SPI_FIRST)
> >       |     ^~~~~~~~~~~~~~~~~~~~~~~~~~
> > 
> > as there is an incorrect comparision in include/hw/xen/xen_native.h
> > which means that settings like GUEST_VIRTIO_MMIO_SPI_LAST
> > aren't being defined for xen-4.18.0
> > 
> > Signed-off-by: Michael Young <m.a.young@durham.ac.uk>
> 
> Reviewed-by: Richard W.M. Jones <rjones@redhat.com>

I added this patch to Fedora, which has Xen 4.18 and where
builds were previously failing, and now it's working:

https://koji.fedoraproject.org/koji/taskinfo?taskID=110043878

So also adding:

Tested-by: Richard W.M. Jones <rjones@redhat.com>

Rich.

> > ---
> >  include/hw/xen/xen_native.h | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/include/hw/xen/xen_native.h b/include/hw/xen/xen_native.h
> > index 6f09c48823..04b1ef4d34 100644
> > --- a/include/hw/xen/xen_native.h
> > +++ b/include/hw/xen/xen_native.h
> > @@ -532,7 +532,7 @@ static inline int xendevicemodel_set_irq_level(xendevicemodel_handle *dmod,
> >  }
> >  #endif
> >  
> > -#if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41700
> > +#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 41700
> >  #define GUEST_VIRTIO_MMIO_BASE   xen_mk_ullong(0x02000000)
> >  #define GUEST_VIRTIO_MMIO_SIZE   xen_mk_ullong(0x00100000)
> >  #define GUEST_VIRTIO_MMIO_SPI_FIRST   33
> > -- 
> > 2.43.0
> > 
> 
> -- 
> Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
> Read my programming and virtualization blog: http://rwmj.wordpress.com
> libguestfs lets you edit virtual machines.  Supports shell scripting,
> bindings from many languages.  http://libguestfs.org
> 

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org