[PULL 30/42] vfio/container: Introduce vfio_address_space_insert()

[Cédric Le Goater]

It prepares ground for a future change initializing the 'space' pointer
of VFIOContainerBase. The goal is to replace vfio_container_init() by
an .instance_init() handler when VFIOContainerBase is QOMified.

Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
 include/hw/vfio/vfio-common.h | 2 ++
 hw/vfio/common.c              | 6 ++++++
 hw/vfio/container.c           | 2 +-
 hw/vfio/iommufd.c             | 2 +-
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 
c19572f90b277193491020af28e8b5587f15bfd1..825d80130bd435fe50830c8ae5b7905d18104dd6
 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -206,6 +206,8 @@ typedef struct VFIODisplay {
 
 VFIOAddressSpace *vfio_get_address_space(AddressSpace *as);
 void vfio_put_address_space(VFIOAddressSpace *space);
+void vfio_address_space_insert(VFIOAddressSpace *space,
+                               VFIOContainerBase *bcontainer);
 
 void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
 void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 
f28641bad5cf4b71fcdc0a6c9d42b24c8d786248..8cdf26c6f5a490cfa02bdf1087a91948709aaa33
 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1508,6 +1508,12 @@ void vfio_put_address_space(VFIOAddressSpace *space)
     }
 }
 
+void vfio_address_space_insert(VFIOAddressSpace *space,
+                               VFIOContainerBase *bcontainer)
+{
+    QLIST_INSERT_HEAD(&space->containers, bcontainer, next);
+}
+
 struct vfio_device_info *vfio_get_device_info(int fd)
 {
     struct vfio_device_info *info;
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index 
c48749c089a67ee4d0e6b8dd975562e2938500cd..0237c216987ff64a6d11bef8688bb000d93a7f09
 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -637,7 +637,7 @@ static bool vfio_connect_container(VFIOGroup *group, 
AddressSpace *as,
     vfio_kvm_device_add_group(group);
 
     QLIST_INIT(&container->group_list);
-    QLIST_INSERT_HEAD(&space->containers, bcontainer, next);
+    vfio_address_space_insert(space, bcontainer);
 
     group->container = container;
     QLIST_INSERT_HEAD(&container->group_list, group, container_next);
diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
index 
e502081c2ad9eda31769176f875fef60a77e2b43..9f8f33e383a38827ceca0f73cb77f5ca6b123198
 100644
--- a/hw/vfio/iommufd.c
+++ b/hw/vfio/iommufd.c
@@ -358,7 +358,7 @@ static bool iommufd_cdev_attach(const char *name, 
VFIODevice *vbasedev,
 
     bcontainer = &container->bcontainer;
     vfio_container_init(bcontainer, space, iommufd_vioc);
-    QLIST_INSERT_HEAD(&space->containers, bcontainer, next);
+    vfio_address_space_insert(space, bcontainer);
 
     if (!iommufd_cdev_attach_container(vbasedev, container, errp)) {
         goto err_attach_container;
-- 
2.45.2