[PATCH v2 20/21] hw/vfio/platform: Check CONFIG_IOMMUFD at runtime using iommufd_builtin

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

Convert the compile time check on the CONFIG_IOMMUFD definition
by a runtime one by calling iommufd_builtin().

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@xxxxxxxxxx>
Reviewed-by: Richard Henderson <richard.henderson@xxxxxxxxxx>
Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
 hw/vfio/platform.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index 67bc57409c1..265c550b747 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -15,7 +15,6 @@
  */
 
 #include "qemu/osdep.h"
-#include CONFIG_DEVICES /* CONFIG_IOMMUFD */
 #include "qapi/error.h"
 #include <sys/ioctl.h>
 #include <linux/vfio.h>
@@ -637,10 +636,11 @@ static const Property vfio_platform_dev_properties[] = {
     DEFINE_PROP_UINT32("mmap-timeout-ms", VFIOPlatformDevice,
                        mmap_timeout, 1100),
     DEFINE_PROP_BOOL("x-irqfd", VFIOPlatformDevice, irqfd_allowed, true),
-#ifdef CONFIG_IOMMUFD
+};
+
+static const Property vfio_platform_dev_iommufd_properties[] = {
     DEFINE_PROP_LINK("iommufd", VFIOPlatformDevice, vbasedev.iommufd,
                      TYPE_IOMMUFD_BACKEND, IOMMUFDBackend *),
-#endif
 };
 
 static void vfio_platform_instance_init(Object *obj)
@@ -652,12 +652,10 @@ static void vfio_platform_instance_init(Object *obj)
                      DEVICE(vdev), false);
 }
 
-#ifdef CONFIG_IOMMUFD
 static void vfio_platform_set_fd(Object *obj, const char *str, Error **errp)
 {
     vfio_device_set_fd(&VFIO_PLATFORM_DEVICE(obj)->vbasedev, str, errp);
 }
-#endif
 
 static void vfio_platform_class_init(ObjectClass *klass, void *data)
 {
@@ -666,9 +664,10 @@ static void vfio_platform_class_init(ObjectClass *klass, void *data)
 
     dc->realize = vfio_platform_realize;
     device_class_set_props(dc, vfio_platform_dev_properties);
-#ifdef CONFIG_IOMMUFD
-    object_class_property_add_str(klass, "fd", NULL, vfio_platform_set_fd);
-#endif
+    if (iommufd_builtin()) {
+        device_class_set_props(dc, vfio_platform_dev_iommufd_properties);
+        object_class_property_add_str(klass, "fd", NULL, vfio_platform_set_fd);
+    }
     dc->vmsd = &vfio_platform_vmstate;
     dc->desc = "VFIO-based platform device assignment";
     sbc->connect_irq_notifier = vfio_start_irqfd_injection;
@@ -692,11 +691,11 @@ static void vfio_platform_class_init(ObjectClass *klass, void *data)
     object_class_property_set_description(klass, /* 2.6 */
                                           "sysfsdev",
                                           "Host sysfs path of assigned device");
-#ifdef CONFIG_IOMMUFD
-    object_class_property_set_description(klass, /* 9.0 */
-                                          "iommufd",
-                                          "Set host IOMMUFD backend device");
-#endif
+    if (iommufd_builtin()) {
+        object_class_property_set_description(klass, /* 9.0 */
+                                              "iommufd",
+                                              "Set host IOMMUFD backend device");
+    }
 }
 
 static const TypeInfo vfio_platform_dev_info = {
-- 
2.47.1