Re: [PATCH v3] xen: fix build without pci passthrough

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Wed, Jun 03, 2020 at 05:04:42PM +0100, Anthony PERARD wrote:
> From: Roger Pau Monne <roger.pau@xxxxxxxxxx>
> 
> Xen PCI passthrough support may not be available and thus the global
> variable "has_igd_gfx_passthru" might be compiled out. Common code
> should not access it in that case.
> 
> Unfortunately, we can't use CONFIG_XEN_PCI_PASSTHROUGH directly in
> xen-common.c so this patch instead move access to the
> has_igd_gfx_passthru variable via function and those functions are
> also implemented as stubs. The stubs will be used when QEMU is built
> without passthrough support.
> 
> Now, when one will want to enable igd-passthru via the -machine
> property, they will get an error message if QEMU is built without
> passthrough support.
> 
> Fixes: 46472d82322d0 ('xen: convert "-machine igd-passthru" to an accelerator 
> property')
> Reported-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>

Tested-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Fixes the build for me on FreeBSD without pci-passthrough.

Thanks!