diff mbox series

[v12,5/6] ui/console: Use qemu_dmabuf_new() and free() helpers instead

Message ID 20240425015342.1033815-6-dongwon.kim@intel.com (mailing list archive)
State New, archived
Headers show
Series ui/console: Private QemuDmaBuf struct | expand

Commit Message

Kim, Dongwon April 25, 2024, 1:53 a.m. UTC 
From: Dongwon Kim <dongwon.kim@intel.com>

This commit introduces utility functions for the creation and deallocation
of QemuDmaBuf instances. Additionally, it updates all relevant sections
of the codebase to utilize these new utility functions.

v7: remove prefix, "dpy_gl_" from all helpers
    qemu_dmabuf_free() returns without doing anything if input is null
    (Daniel P. Berrangé <berrange@redhat.com>)
    call G_DEFINE_AUTOPTR_CLEANUP_FUNC for qemu_dmabuf_free()
    (Daniel P. Berrangé <berrange@redhat.com>)

v8: Introduction of helpers was removed as those were already added
    by the previous commit

v9: set dmabuf->allow_fences to 'true' when dmabuf is created in
    virtio_gpu_create_dmabuf()/virtio-gpu-udmabuf.c

    removed unnecessary spaces were accidently added in the patch,
    'ui/console: Use qemu_dmabuf_new() a...'

v11: Calling qemu_dmabuf_close was removed as closing dmabuf->fd will be
     done in qemu_dmabuf_free anyway.
     (Daniel P. Berrangé <berrange@redhat.com>)

v12: --- Calling qemu_dmabuf_close separately as qemu_dmabuf_free doesn't
         do it.

     --- 'dmabuf' is now allocated space so it should be freed at the end of
         dbus_scanout_texture

Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Philippe Mathieu-Daudé <philmd@linaro.org>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
---
 include/hw/vfio/vfio-common.h   |  2 +-
 include/hw/virtio/virtio-gpu.h  |  4 ++--
 hw/display/vhost-user-gpu.c     | 21 +++++++++++----------
 hw/display/virtio-gpu-udmabuf.c | 24 +++++++++---------------
 hw/vfio/display.c               | 26 ++++++++++++--------------
 ui/dbus-listener.c              | 29 +++++++++++++----------------
 6 files changed, 48 insertions(+), 58 deletions(-)

Comments

Marc-André Lureau May 7, 2024, 1:36 p.m. UTC | #1 
Hi

On Thu, Apr 25, 2024 at 5:58 AM <dongwon.kim@intel.com> wrote:
>
> From: Dongwon Kim <dongwon.kim@intel.com>
>
> This commit introduces utility functions for the creation and deallocation
> of QemuDmaBuf instances. Additionally, it updates all relevant sections
> of the codebase to utilize these new utility functions.
>
> v7: remove prefix, "dpy_gl_" from all helpers
>     qemu_dmabuf_free() returns without doing anything if input is null
>     (Daniel P. Berrangé <berrange@redhat.com>)
>     call G_DEFINE_AUTOPTR_CLEANUP_FUNC for qemu_dmabuf_free()
>     (Daniel P. Berrangé <berrange@redhat.com>)
>
> v8: Introduction of helpers was removed as those were already added
>     by the previous commit
>
> v9: set dmabuf->allow_fences to 'true' when dmabuf is created in
>     virtio_gpu_create_dmabuf()/virtio-gpu-udmabuf.c
>
>     removed unnecessary spaces were accidently added in the patch,
>     'ui/console: Use qemu_dmabuf_new() a...'
>
> v11: Calling qemu_dmabuf_close was removed as closing dmabuf->fd will be
>      done in qemu_dmabuf_free anyway.
>      (Daniel P. Berrangé <berrange@redhat.com>)
>
> v12: --- Calling qemu_dmabuf_close separately as qemu_dmabuf_free doesn't
>          do it.
>
>      --- 'dmabuf' is now allocated space so it should be freed at the end of
>          dbus_scanout_texture
>
> Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Cc: Philippe Mathieu-Daudé <philmd@linaro.org>
> Cc: Daniel P. Berrangé <berrange@redhat.com>
> Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
> Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
> ---
>  include/hw/vfio/vfio-common.h   |  2 +-
>  include/hw/virtio/virtio-gpu.h  |  4 ++--
>  hw/display/vhost-user-gpu.c     | 21 +++++++++++----------
>  hw/display/virtio-gpu-udmabuf.c | 24 +++++++++---------------
>  hw/vfio/display.c               | 26 ++++++++++++--------------
>  ui/dbus-listener.c              | 29 +++++++++++++----------------
>  6 files changed, 48 insertions(+), 58 deletions(-)
>
> diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
> index b9da6c08ef..d66e27db02 100644
> --- a/include/hw/vfio/vfio-common.h
> +++ b/include/hw/vfio/vfio-common.h
> @@ -148,7 +148,7 @@ typedef struct VFIOGroup {
>  } VFIOGroup;
>
>  typedef struct VFIODMABuf {
> -    QemuDmaBuf buf;
> +    QemuDmaBuf *buf;
>      uint32_t pos_x, pos_y, pos_updates;
>      uint32_t hot_x, hot_y, hot_updates;
>      int dmabuf_id;
> diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
> index ed44cdad6b..56d6e821bf 100644
> --- a/include/hw/virtio/virtio-gpu.h
> +++ b/include/hw/virtio/virtio-gpu.h
> @@ -169,7 +169,7 @@ struct VirtIOGPUBaseClass {
>      DEFINE_PROP_UINT32("yres", _state, _conf.yres, 800)
>
>  typedef struct VGPUDMABuf {
> -    QemuDmaBuf buf;
> +    QemuDmaBuf *buf;
>      uint32_t scanout_id;
>      QTAILQ_ENTRY(VGPUDMABuf) next;
>  } VGPUDMABuf;
> @@ -238,7 +238,7 @@ struct VhostUserGPU {
>      VhostUserBackend *vhost;
>      int vhost_gpu_fd; /* closed by the chardev */
>      CharBackend vhost_chr;
> -    QemuDmaBuf dmabuf[VIRTIO_GPU_MAX_SCANOUTS];
> +    QemuDmaBuf *dmabuf[VIRTIO_GPU_MAX_SCANOUTS];
>      bool backend_blocked;
>  };
>
> diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c
> index 454e5afcff..62e7b4376b 100644
> --- a/hw/display/vhost-user-gpu.c
> +++ b/hw/display/vhost-user-gpu.c
> @@ -249,6 +249,7 @@ vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg)
>      case VHOST_USER_GPU_DMABUF_SCANOUT: {
>          VhostUserGpuDMABUFScanout *m = &msg->payload.dmabuf_scanout;
>          int fd = qemu_chr_fe_get_msgfd(&g->vhost_chr);
> +        uint64_t modifier = 0;
>          QemuDmaBuf *dmabuf;
>
>          if (m->scanout_id >= g->parent_obj.conf.max_outputs) {
> @@ -261,27 +262,27 @@ vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg)
>
>          g->parent_obj.enable = 1;
>          con = g->parent_obj.scanout[m->scanout_id].con;
> -        dmabuf = &g->dmabuf[m->scanout_id];
> +        dmabuf = g->dmabuf[m->scanout_id];
>          qemu_dmabuf_close(dmabuf);
>          dpy_gl_release_dmabuf(con, dmabuf);
> +        g_clear_pointer(&dmabuf, qemu_dmabuf_free);

This will create a dangling pointer in g->dmabuf[m->scanout_id]...

>          if (fd == -1) {
>              dpy_gl_scanout_disable(con);
>              break;

.. which may persist here

>          }
> -        *dmabuf = (QemuDmaBuf) {
> -            .fd = fd,
> -            .width = m->fd_width,
> -            .height = m->fd_height,
> -            .stride = m->fd_stride,
> -            .fourcc = m->fd_drm_fourcc,
> -            .y0_top = m->fd_flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP,
> -        };
>          if (msg->request == VHOST_USER_GPU_DMABUF_SCANOUT2) {
>              VhostUserGpuDMABUFScanout2 *m2 = &msg->payload.dmabuf_scanout2;
> -            dmabuf->modifier = m2->modifier;
> +            modifier = m2->modifier;
>          }
>
> +        dmabuf = qemu_dmabuf_new(m->fd_width, m->fd_height,
> +                                 m->fd_stride, 0, 0, 0, 0,
> +                                 m->fd_drm_fourcc, modifier,
> +                                 fd, false, m->fd_flags &
> +                                 VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP);
> +
>          dpy_gl_scanout_dmabuf(con, dmabuf);
> +        g->dmabuf[m->scanout_id] = dmabuf;
>          break;
>      }
>      case VHOST_USER_GPU_DMABUF_UPDATE: {
> diff --git a/hw/display/virtio-gpu-udmabuf.c b/hw/display/virtio-gpu-udmabuf.c
> index c90eba281e..c02ec6d37d 100644
> --- a/hw/display/virtio-gpu-udmabuf.c
> +++ b/hw/display/virtio-gpu-udmabuf.c
> @@ -162,7 +162,8 @@ static void virtio_gpu_free_dmabuf(VirtIOGPU *g, VGPUDMABuf *dmabuf)
>      struct virtio_gpu_scanout *scanout;
>
>      scanout = &g->parent_obj.scanout[dmabuf->scanout_id];
> -    dpy_gl_release_dmabuf(scanout->con, &dmabuf->buf);
> +    dpy_gl_release_dmabuf(scanout->con, dmabuf->buf);
> +    g_clear_pointer(&dmabuf->buf, qemu_dmabuf_free);
>      QTAILQ_REMOVE(&g->dmabuf.bufs, dmabuf, next);
>      g_free(dmabuf);
>  }
> @@ -181,17 +182,10 @@ static VGPUDMABuf
>      }
>
>      dmabuf = g_new0(VGPUDMABuf, 1);
> -    dmabuf->buf.width = r->width;
> -    dmabuf->buf.height = r->height;
> -    dmabuf->buf.stride = fb->stride;
> -    dmabuf->buf.x = r->x;
> -    dmabuf->buf.y = r->y;
> -    dmabuf->buf.backing_width = fb->width;
> -    dmabuf->buf.backing_height = fb->height;
> -    dmabuf->buf.fourcc = qemu_pixman_to_drm_format(fb->format);
> -    dmabuf->buf.fd = res->dmabuf_fd;
> -    dmabuf->buf.allow_fences = true;
> -    dmabuf->buf.draw_submitted = false;
> +    dmabuf->buf = qemu_dmabuf_new(r->width, r->height, fb->stride,
> +                                  r->x, r->y, fb->width, fb->height,
> +                                  qemu_pixman_to_drm_format(fb->format),
> +                                  0, res->dmabuf_fd, true, false);
>      dmabuf->scanout_id = scanout_id;
>      QTAILQ_INSERT_HEAD(&g->dmabuf.bufs, dmabuf, next);
>
> @@ -217,11 +211,11 @@ int virtio_gpu_update_dmabuf(VirtIOGPU *g,
>          old_primary = g->dmabuf.primary[scanout_id];
>      }
>
> -    width = qemu_dmabuf_get_width(&new_primary->buf);
> -    height = qemu_dmabuf_get_height(&new_primary->buf);
> +    width = qemu_dmabuf_get_width(new_primary->buf);
> +    height = qemu_dmabuf_get_height(new_primary->buf);
>      g->dmabuf.primary[scanout_id] = new_primary;
>      qemu_console_resize(scanout->con, width, height);
> -    dpy_gl_scanout_dmabuf(scanout->con, &new_primary->buf);
> +    dpy_gl_scanout_dmabuf(scanout->con, new_primary->buf);
>
>      if (old_primary) {
>          virtio_gpu_free_dmabuf(g, old_primary);
> diff --git a/hw/vfio/display.c b/hw/vfio/display.c
> index 7784502b53..fe624a6c9b 100644
> --- a/hw/vfio/display.c
> +++ b/hw/vfio/display.c
> @@ -241,14 +241,11 @@ static VFIODMABuf *vfio_display_get_dmabuf(VFIOPCIDevice *vdev,
>
>      dmabuf = g_new0(VFIODMABuf, 1);
>      dmabuf->dmabuf_id  = plane.dmabuf_id;
> -    dmabuf->buf.width  = plane.width;
> -    dmabuf->buf.height = plane.height;
> -    dmabuf->buf.backing_width = plane.width;
> -    dmabuf->buf.backing_height = plane.height;
> -    dmabuf->buf.stride = plane.stride;
> -    dmabuf->buf.fourcc = plane.drm_format;
> -    dmabuf->buf.modifier = plane.drm_format_mod;
> -    dmabuf->buf.fd     = fd;
> +    dmabuf->buf = qemu_dmabuf_new(plane.width, plane.height,
> +                                  plane.stride, 0, 0, plane.width,
> +                                  plane.height, plane.drm_format,
> +                                  plane.drm_format_mod, fd, false, false);
> +
>      if (plane_type == DRM_PLANE_TYPE_CURSOR) {
>          vfio_display_update_cursor(dmabuf, &plane);
>      }
> @@ -261,8 +258,9 @@ static void vfio_display_free_one_dmabuf(VFIODisplay *dpy, VFIODMABuf *dmabuf)
>  {
>      QTAILQ_REMOVE(&dpy->dmabuf.bufs, dmabuf, next);
>
> -    qemu_dmabuf_close(&dmabuf->buf);
> -    dpy_gl_release_dmabuf(dpy->con, &dmabuf->buf);
> +    qemu_dmabuf_close(dmabuf->buf);
> +    dpy_gl_release_dmabuf(dpy->con, dmabuf->buf);
> +    g_clear_pointer(&dmabuf->buf, qemu_dmabuf_free);
>      g_free(dmabuf);
>  }
>
> @@ -298,13 +296,13 @@ static void vfio_display_dmabuf_update(void *opaque)
>          return;
>      }
>
> -    width = qemu_dmabuf_get_width(&primary->buf);
> -    height = qemu_dmabuf_get_height(&primary->buf);
> +    width = qemu_dmabuf_get_width(primary->buf);
> +    height = qemu_dmabuf_get_height(primary->buf);
>
>      if (dpy->dmabuf.primary != primary) {
>          dpy->dmabuf.primary = primary;
>          qemu_console_resize(dpy->con, width, height);
> -        dpy_gl_scanout_dmabuf(dpy->con, &primary->buf);
> +        dpy_gl_scanout_dmabuf(dpy->con, primary->buf);
>          free_bufs = true;
>      }
>
> @@ -318,7 +316,7 @@ static void vfio_display_dmabuf_update(void *opaque)
>      if (cursor && (new_cursor || cursor->hot_updates)) {
>          bool have_hot = (cursor->hot_x != 0xffffffff &&
>                           cursor->hot_y != 0xffffffff);
> -        dpy_gl_cursor_dmabuf(dpy->con, &cursor->buf, have_hot,
> +        dpy_gl_cursor_dmabuf(dpy->con, cursor->buf, have_hot,
>                               cursor->hot_x, cursor->hot_y);
>          cursor->hot_updates = 0;
>      } else if (!cursor && new_cursor) {
> diff --git a/ui/dbus-listener.c b/ui/dbus-listener.c
> index 62d1e2d3f9..d72dbe832c 100644
> --- a/ui/dbus-listener.c
> +++ b/ui/dbus-listener.c
> @@ -442,28 +442,25 @@ static void dbus_scanout_texture(DisplayChangeListener *dcl,
>      trace_dbus_scanout_texture(tex_id, backing_y_0_top,
>                                 backing_width, backing_height, x, y, w, h);
>  #ifdef CONFIG_GBM
> -    QemuDmaBuf dmabuf = {
> -        .width = w,
> -        .height = h,
> -        .y0_top = backing_y_0_top,
> -        .x = x,
> -        .y = y,
> -        .backing_width = backing_width,
> -        .backing_height = backing_height,
> -    };
> +    int fd;
> +    uint32_t stride, fourcc;
> +    uint64_t modifier;
> +    QemuDmaBuf *dmabuf;
>
>      assert(tex_id);
> -    dmabuf.fd = egl_get_fd_for_texture(
> -        tex_id, (EGLint *)&dmabuf.stride,
> -        (EGLint *)&dmabuf.fourcc,
> -        &dmabuf.modifier);
> -    if (dmabuf.fd < 0) {
> +    fd = egl_get_fd_for_texture(tex_id, (EGLint *)&stride, (EGLint *)&fourcc,
> +                                &modifier);
> +    if (fd < 0) {
>          error_report("%s: failed to get fd for texture", __func__);
>          return;
>      }
> +    dmabuf = qemu_dmabuf_new(w, h, stride, x, y, backing_width,
> +                             backing_height, fourcc, modifier, fd,
> +                             false, backing_y_0_top);
>
> -    dbus_scanout_dmabuf(dcl, &dmabuf);
> -    close(dmabuf.fd);
> +    dbus_scanout_dmabuf(dcl, dmabuf);
> +    qemu_dmabuf_close(dmabuf);
> +    qemu_dmabuf_free(dmabuf);

it could use g_autoptr() instead, but that's ok too.

>  #endif
>
>  #ifdef WIN32
> --
> 2.34.1
>

looks ok otherwise
diff mbox series

Patch

diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index b9da6c08ef..d66e27db02 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -148,7 +148,7 @@  typedef struct VFIOGroup {
 } VFIOGroup;
 
 typedef struct VFIODMABuf {
-    QemuDmaBuf buf;
+    QemuDmaBuf *buf;
     uint32_t pos_x, pos_y, pos_updates;
     uint32_t hot_x, hot_y, hot_updates;
     int dmabuf_id;
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index ed44cdad6b..56d6e821bf 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -169,7 +169,7 @@  struct VirtIOGPUBaseClass {
     DEFINE_PROP_UINT32("yres", _state, _conf.yres, 800)
 
 typedef struct VGPUDMABuf {
-    QemuDmaBuf buf;
+    QemuDmaBuf *buf;
     uint32_t scanout_id;
     QTAILQ_ENTRY(VGPUDMABuf) next;
 } VGPUDMABuf;
@@ -238,7 +238,7 @@  struct VhostUserGPU {
     VhostUserBackend *vhost;
     int vhost_gpu_fd; /* closed by the chardev */
     CharBackend vhost_chr;
-    QemuDmaBuf dmabuf[VIRTIO_GPU_MAX_SCANOUTS];
+    QemuDmaBuf *dmabuf[VIRTIO_GPU_MAX_SCANOUTS];
     bool backend_blocked;
 };
 
diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c
index 454e5afcff..62e7b4376b 100644
--- a/hw/display/vhost-user-gpu.c
+++ b/hw/display/vhost-user-gpu.c
@@ -249,6 +249,7 @@  vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg)
     case VHOST_USER_GPU_DMABUF_SCANOUT: {
         VhostUserGpuDMABUFScanout *m = &msg->payload.dmabuf_scanout;
         int fd = qemu_chr_fe_get_msgfd(&g->vhost_chr);
+        uint64_t modifier = 0;
         QemuDmaBuf *dmabuf;
 
         if (m->scanout_id >= g->parent_obj.conf.max_outputs) {
@@ -261,27 +262,27 @@  vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg)
 
         g->parent_obj.enable = 1;
         con = g->parent_obj.scanout[m->scanout_id].con;
-        dmabuf = &g->dmabuf[m->scanout_id];
+        dmabuf = g->dmabuf[m->scanout_id];
         qemu_dmabuf_close(dmabuf);
         dpy_gl_release_dmabuf(con, dmabuf);
+        g_clear_pointer(&dmabuf, qemu_dmabuf_free);
         if (fd == -1) {
             dpy_gl_scanout_disable(con);
             break;
         }
-        *dmabuf = (QemuDmaBuf) {
-            .fd = fd,
-            .width = m->fd_width,
-            .height = m->fd_height,
-            .stride = m->fd_stride,
-            .fourcc = m->fd_drm_fourcc,
-            .y0_top = m->fd_flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP,
-        };
         if (msg->request == VHOST_USER_GPU_DMABUF_SCANOUT2) {
             VhostUserGpuDMABUFScanout2 *m2 = &msg->payload.dmabuf_scanout2;
-            dmabuf->modifier = m2->modifier;
+            modifier = m2->modifier;
         }
 
+        dmabuf = qemu_dmabuf_new(m->fd_width, m->fd_height,
+                                 m->fd_stride, 0, 0, 0, 0,
+                                 m->fd_drm_fourcc, modifier,
+                                 fd, false, m->fd_flags &
+                                 VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP);
+
         dpy_gl_scanout_dmabuf(con, dmabuf);
+        g->dmabuf[m->scanout_id] = dmabuf;
         break;
     }
     case VHOST_USER_GPU_DMABUF_UPDATE: {
diff --git a/hw/display/virtio-gpu-udmabuf.c b/hw/display/virtio-gpu-udmabuf.c
index c90eba281e..c02ec6d37d 100644
--- a/hw/display/virtio-gpu-udmabuf.c
+++ b/hw/display/virtio-gpu-udmabuf.c
@@ -162,7 +162,8 @@  static void virtio_gpu_free_dmabuf(VirtIOGPU *g, VGPUDMABuf *dmabuf)
     struct virtio_gpu_scanout *scanout;
 
     scanout = &g->parent_obj.scanout[dmabuf->scanout_id];
-    dpy_gl_release_dmabuf(scanout->con, &dmabuf->buf);
+    dpy_gl_release_dmabuf(scanout->con, dmabuf->buf);
+    g_clear_pointer(&dmabuf->buf, qemu_dmabuf_free);
     QTAILQ_REMOVE(&g->dmabuf.bufs, dmabuf, next);
     g_free(dmabuf);
 }
@@ -181,17 +182,10 @@  static VGPUDMABuf
     }
 
     dmabuf = g_new0(VGPUDMABuf, 1);
-    dmabuf->buf.width = r->width;
-    dmabuf->buf.height = r->height;
-    dmabuf->buf.stride = fb->stride;
-    dmabuf->buf.x = r->x;
-    dmabuf->buf.y = r->y;
-    dmabuf->buf.backing_width = fb->width;
-    dmabuf->buf.backing_height = fb->height;
-    dmabuf->buf.fourcc = qemu_pixman_to_drm_format(fb->format);
-    dmabuf->buf.fd = res->dmabuf_fd;
-    dmabuf->buf.allow_fences = true;
-    dmabuf->buf.draw_submitted = false;
+    dmabuf->buf = qemu_dmabuf_new(r->width, r->height, fb->stride,
+                                  r->x, r->y, fb->width, fb->height,
+                                  qemu_pixman_to_drm_format(fb->format),
+                                  0, res->dmabuf_fd, true, false);
     dmabuf->scanout_id = scanout_id;
     QTAILQ_INSERT_HEAD(&g->dmabuf.bufs, dmabuf, next);
 
@@ -217,11 +211,11 @@  int virtio_gpu_update_dmabuf(VirtIOGPU *g,
         old_primary = g->dmabuf.primary[scanout_id];
     }
 
-    width = qemu_dmabuf_get_width(&new_primary->buf);
-    height = qemu_dmabuf_get_height(&new_primary->buf);
+    width = qemu_dmabuf_get_width(new_primary->buf);
+    height = qemu_dmabuf_get_height(new_primary->buf);
     g->dmabuf.primary[scanout_id] = new_primary;
     qemu_console_resize(scanout->con, width, height);
-    dpy_gl_scanout_dmabuf(scanout->con, &new_primary->buf);
+    dpy_gl_scanout_dmabuf(scanout->con, new_primary->buf);
 
     if (old_primary) {
         virtio_gpu_free_dmabuf(g, old_primary);
diff --git a/hw/vfio/display.c b/hw/vfio/display.c
index 7784502b53..fe624a6c9b 100644
--- a/hw/vfio/display.c
+++ b/hw/vfio/display.c
@@ -241,14 +241,11 @@  static VFIODMABuf *vfio_display_get_dmabuf(VFIOPCIDevice *vdev,
 
     dmabuf = g_new0(VFIODMABuf, 1);
     dmabuf->dmabuf_id  = plane.dmabuf_id;
-    dmabuf->buf.width  = plane.width;
-    dmabuf->buf.height = plane.height;
-    dmabuf->buf.backing_width = plane.width;
-    dmabuf->buf.backing_height = plane.height;
-    dmabuf->buf.stride = plane.stride;
-    dmabuf->buf.fourcc = plane.drm_format;
-    dmabuf->buf.modifier = plane.drm_format_mod;
-    dmabuf->buf.fd     = fd;
+    dmabuf->buf = qemu_dmabuf_new(plane.width, plane.height,
+                                  plane.stride, 0, 0, plane.width,
+                                  plane.height, plane.drm_format,
+                                  plane.drm_format_mod, fd, false, false);
+
     if (plane_type == DRM_PLANE_TYPE_CURSOR) {
         vfio_display_update_cursor(dmabuf, &plane);
     }
@@ -261,8 +258,9 @@  static void vfio_display_free_one_dmabuf(VFIODisplay *dpy, VFIODMABuf *dmabuf)
 {
     QTAILQ_REMOVE(&dpy->dmabuf.bufs, dmabuf, next);
 
-    qemu_dmabuf_close(&dmabuf->buf);
-    dpy_gl_release_dmabuf(dpy->con, &dmabuf->buf);
+    qemu_dmabuf_close(dmabuf->buf);
+    dpy_gl_release_dmabuf(dpy->con, dmabuf->buf);
+    g_clear_pointer(&dmabuf->buf, qemu_dmabuf_free);
     g_free(dmabuf);
 }
 
@@ -298,13 +296,13 @@  static void vfio_display_dmabuf_update(void *opaque)
         return;
     }
 
-    width = qemu_dmabuf_get_width(&primary->buf);
-    height = qemu_dmabuf_get_height(&primary->buf);
+    width = qemu_dmabuf_get_width(primary->buf);
+    height = qemu_dmabuf_get_height(primary->buf);
 
     if (dpy->dmabuf.primary != primary) {
         dpy->dmabuf.primary = primary;
         qemu_console_resize(dpy->con, width, height);
-        dpy_gl_scanout_dmabuf(dpy->con, &primary->buf);
+        dpy_gl_scanout_dmabuf(dpy->con, primary->buf);
         free_bufs = true;
     }
 
@@ -318,7 +316,7 @@  static void vfio_display_dmabuf_update(void *opaque)
     if (cursor && (new_cursor || cursor->hot_updates)) {
         bool have_hot = (cursor->hot_x != 0xffffffff &&
                          cursor->hot_y != 0xffffffff);
-        dpy_gl_cursor_dmabuf(dpy->con, &cursor->buf, have_hot,
+        dpy_gl_cursor_dmabuf(dpy->con, cursor->buf, have_hot,
                              cursor->hot_x, cursor->hot_y);
         cursor->hot_updates = 0;
     } else if (!cursor && new_cursor) {
diff --git a/ui/dbus-listener.c b/ui/dbus-listener.c
index 62d1e2d3f9..d72dbe832c 100644
--- a/ui/dbus-listener.c
+++ b/ui/dbus-listener.c
@@ -442,28 +442,25 @@  static void dbus_scanout_texture(DisplayChangeListener *dcl,
     trace_dbus_scanout_texture(tex_id, backing_y_0_top,
                                backing_width, backing_height, x, y, w, h);
 #ifdef CONFIG_GBM
-    QemuDmaBuf dmabuf = {
-        .width = w,
-        .height = h,
-        .y0_top = backing_y_0_top,
-        .x = x,
-        .y = y,
-        .backing_width = backing_width,
-        .backing_height = backing_height,
-    };
+    int fd;
+    uint32_t stride, fourcc;
+    uint64_t modifier;
+    QemuDmaBuf *dmabuf;
 
     assert(tex_id);
-    dmabuf.fd = egl_get_fd_for_texture(
-        tex_id, (EGLint *)&dmabuf.stride,
-        (EGLint *)&dmabuf.fourcc,
-        &dmabuf.modifier);
-    if (dmabuf.fd < 0) {
+    fd = egl_get_fd_for_texture(tex_id, (EGLint *)&stride, (EGLint *)&fourcc,
+                                &modifier);
+    if (fd < 0) {
         error_report("%s: failed to get fd for texture", __func__);
         return;
     }
+    dmabuf = qemu_dmabuf_new(w, h, stride, x, y, backing_width,
+                             backing_height, fourcc, modifier, fd,
+                             false, backing_y_0_top);
 
-    dbus_scanout_dmabuf(dcl, &dmabuf);
-    close(dmabuf.fd);
+    dbus_scanout_dmabuf(dcl, dmabuf);
+    qemu_dmabuf_close(dmabuf);
+    qemu_dmabuf_free(dmabuf);
 #endif
 
 #ifdef WIN32