[v2,18/21] hw/vfio/ccw: Check CONFIG_IOMMUFD at runtime using iommufd_builtin()

Commit Message

Philippe Mathieu-Daudé March 8, 2025, 11:09 p.m. UTC

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

Reviewed-by: Pierrick Bouvier <[e-mail]>
Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
---
 hw/vfio/ccw.c | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

Patch

diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c
index e5e0d9e3e7e..84d1437a568 100644
--- a/hw/vfio/ccw.c
+++ b/hw/vfio/ccw.c
@@ -15,7 +15,6 @@ 
  */
 
 #include "qemu/osdep.h"
-#include CONFIG_DEVICES /* CONFIG_IOMMUFD */
 #include <linux/vfio.h>
 #include <linux/vfio_ccw.h>
 #include <sys/ioctl.h>
@@ -650,11 +649,12 @@  static void vfio_ccw_unrealize(DeviceState *dev)
 static const Property vfio_ccw_properties[] = {
     DEFINE_PROP_STRING("sysfsdev", VFIOCCWDevice, vdev.sysfsdev),
     DEFINE_PROP_BOOL("force-orb-pfch", VFIOCCWDevice, force_orb_pfch, false),
-#ifdef CONFIG_IOMMUFD
+    DEFINE_PROP_CCW_LOADPARM("loadparm", CcwDevice, loadparm),
+};
+
+static const Property vfio_ccw_iommufd_properties[] = {
     DEFINE_PROP_LINK("iommufd", VFIOCCWDevice, vdev.iommufd,
                      TYPE_IOMMUFD_BACKEND, IOMMUFDBackend *),
-#endif
-    DEFINE_PROP_CCW_LOADPARM("loadparm", CcwDevice, loadparm),
 };
 
 static const VMStateDescription vfio_ccw_vmstate = {
@@ -682,12 +682,10 @@  static void vfio_ccw_instance_init(Object *obj)
                      DEVICE(vcdev), true);
 }
 
-#ifdef CONFIG_IOMMUFD
 static void vfio_ccw_set_fd(Object *obj, const char *str, Error **errp)
 {
     vfio_device_set_fd(&VFIO_CCW(obj)->vdev, str, errp);
 }
-#endif
 
 static void vfio_ccw_class_init(ObjectClass *klass, void *data)
 {
@@ -695,9 +693,10 @@  static void vfio_ccw_class_init(ObjectClass *klass, void *data)
     S390CCWDeviceClass *cdc = S390_CCW_DEVICE_CLASS(klass);
 
     device_class_set_props(dc, vfio_ccw_properties);
-#ifdef CONFIG_IOMMUFD
-    object_class_property_add_str(klass, "fd", NULL, vfio_ccw_set_fd);
-#endif
+    if (iommufd_builtin()) {
+        device_class_set_props(dc, vfio_ccw_iommufd_properties);
+        object_class_property_add_str(klass, "fd", NULL, vfio_ccw_set_fd);
+    }
     dc->vmsd = &vfio_ccw_vmstate;
     dc->desc = "VFIO-based subchannel assignment";
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
@@ -716,11 +715,11 @@  static void vfio_ccw_class_init(ObjectClass *klass, void *data)
     object_class_property_set_description(klass, /* 3.0 */
                                           "force-orb-pfch",
                                           "Force unlimited prefetch");
-#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");
+    }
     object_class_property_set_description(klass, /* 9.2 */
                                           "loadparm",
                                           "Define which devices that can be used for booting");