[PATCH 12/14] hw/vfio/ap: Check CONFIG_IOMMUFD at runtime using iommufd_builtin()

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

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

Since the file doesn't use any target-specific knowledge anymore,
move it to system_ss[] to build it once.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/s390x/kvm/kvm_s390x.h |  2 +-
 hw/vfio/ap.c                 | 27 +++++++++++++--------------
 hw/vfio/meson.build          |  2 +-
 3 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/target/s390x/kvm/kvm_s390x.h b/target/s390x/kvm/kvm_s390x.h
index 649dae5948a..7b1cce3e60d 100644
--- a/target/s390x/kvm/kvm_s390x.h
+++ b/target/s390x/kvm/kvm_s390x.h
@@ -10,7 +10,7 @@
 #ifndef KVM_S390X_H
 #define KVM_S390X_H
 
-#include "cpu-qom.h"
+#include "target/s390x/cpu-qom.h"
 
 struct kvm_s390_irq;
 
diff --git a/hw/vfio/ap.c b/hw/vfio/ap.c
index c7ab4ff57ad..832b98532ea 100644
--- a/hw/vfio/ap.c
+++ b/hw/vfio/ap.c
@@ -11,7 +11,6 @@
  */
 
 #include "qemu/osdep.h"
-#include CONFIG_DEVICES /* CONFIG_IOMMUFD */
 #include <linux/vfio.h>
 #include <sys/ioctl.h>
 #include "qapi/error.h"
@@ -24,7 +23,7 @@
 #include "qemu/module.h"
 #include "qemu/option.h"
 #include "qemu/config-file.h"
-#include "kvm/kvm_s390x.h"
+#include "target/s390x/kvm/kvm_s390x.h"
 #include "migration/vmstate.h"
 #include "hw/qdev-properties.h"
 #include "hw/s390x/ap-bridge.h"
@@ -193,10 +192,11 @@ static void vfio_ap_unrealize(DeviceState *dev)
 
 static const Property vfio_ap_properties[] = {
     DEFINE_PROP_STRING("sysfsdev", VFIOAPDevice, vdev.sysfsdev),
-#ifdef CONFIG_IOMMUFD
+};
+
+static const Property vfio_ap_iommufd_properties[] = {
     DEFINE_PROP_LINK("iommufd", VFIOAPDevice, vdev.iommufd,
                      TYPE_IOMMUFD_BACKEND, IOMMUFDBackend *),
-#endif
 };
 
 static void vfio_ap_reset(DeviceState *dev)
@@ -234,21 +234,20 @@ static void vfio_ap_instance_init(Object *obj)
     vbasedev->mdev = true;
 }
 
-#ifdef CONFIG_IOMMUFD
 static void vfio_ap_set_fd(Object *obj, const char *str, Error **errp)
 {
     vfio_device_set_fd(&VFIO_AP_DEVICE(obj)->vdev, str, errp);
 }
-#endif
 
 static void vfio_ap_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
     device_class_set_props(dc, vfio_ap_properties);
-#ifdef CONFIG_IOMMUFD
-    object_class_property_add_str(klass, "fd", NULL, vfio_ap_set_fd);
-#endif
+    if (iommufd_builtin()) {
+        device_class_set_props(dc, vfio_ap_iommufd_properties);
+        object_class_property_add_str(klass, "fd", NULL, vfio_ap_set_fd);
+    }
     dc->vmsd = &vfio_ap_vmstate;
     dc->desc = "VFIO-based AP device assignment";
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
@@ -261,11 +260,11 @@ static void vfio_ap_class_init(ObjectClass *klass, void *data)
     object_class_property_set_description(klass, /* 3.1 */
                                           "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_ap_info = {
diff --git a/hw/vfio/meson.build b/hw/vfio/meson.build
index 9a004992c11..510ebe6d720 100644
--- a/hw/vfio/meson.build
+++ b/hw/vfio/meson.build
@@ -9,7 +9,6 @@ vfio_ss.add(when: 'CONFIG_VFIO_PCI', if_true: files(
 ))
 vfio_ss.add(when: 'CONFIG_VFIO_CCW', if_true: files('ccw.c'))
 vfio_ss.add(when: 'CONFIG_VFIO_PLATFORM', if_true: files('platform.c'))
-vfio_ss.add(when: 'CONFIG_VFIO_AP', if_true: files('ap.c'))
 
 specific_ss.add_all(when: 'CONFIG_VFIO', if_true: vfio_ss)
 
@@ -26,6 +25,7 @@ system_ss.add(when: 'CONFIG_VFIO', if_true: files(
 system_ss.add(when: ['CONFIG_VFIO', 'CONFIG_IOMMUFD'], if_true: files(
   'iommufd.c',
 ))
+system_ss.add(when: 'CONFIG_VFIO_AP', if_true: files('ap.c'))
 system_ss.add(when: 'CONFIG_VFIO_PCI', if_true: files(
   'display.c',
   'pci.c',
-- 
2.47.1