[PATCH-for-5.0 v3 6/6] hw/pci-host: Add Kconfig entry to select the IGD Passthrough Host Bridge

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Add the XEN_IGD_PASSTHROUGH Kconfig option.

Xen build has that option selected by default. Non-Xen builds now
have to select this feature manually.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
v3: Only default with Xen (Alex Williamson)

I did not used 'depends on XEN' as suggested by Alex but
'default y if XEN', so one can build XEN without this feature
(for example, on other ARCH than X86).
---
 hw/pci-host/Kconfig       | 5 +++++
 hw/pci-host/Makefile.objs | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/pci-host/Kconfig b/hw/pci-host/Kconfig
index b0aa8351c4..24ba8ea046 100644
--- a/hw/pci-host/Kconfig
+++ b/hw/pci-host/Kconfig
@@ -1,6 +1,11 @@
 config PAM
     bool
 
+config XEN_IGD_PASSTHROUGH
+    bool
+    default y if XEN
+    select PCI_I440FX
+
 config PREP_PCI
     bool
     select PCI
diff --git a/hw/pci-host/Makefile.objs b/hw/pci-host/Makefile.objs
index fa6d1556c0..9c466fab01 100644
--- a/hw/pci-host/Makefile.objs
+++ b/hw/pci-host/Makefile.objs
@@ -14,7 +14,7 @@ common-obj-$(CONFIG_VERSATILE_PCI) += versatile.o
 common-obj-$(CONFIG_PCI_SABRE) += sabre.o
 common-obj-$(CONFIG_FULONG) += bonito.o
 common-obj-$(CONFIG_PCI_I440FX) += i440fx.o
-common-obj-$(CONFIG_PCI_I440FX) += xen_igd_pt.o
+common-obj-$(CONFIG_XEN_IGD_PASSTHROUGH) += xen_igd_pt.o
 common-obj-$(CONFIG_PCI_EXPRESS_Q35) += q35.o
 common-obj-$(CONFIG_PCI_EXPRESS_GENERIC_BRIDGE) += gpex.o
 common-obj-$(CONFIG_PCI_EXPRESS_XILINX) += xilinx-pcie.o
-- 
2.21.0