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a="14887690" X-IronPort-AV: E=Sophos;i="6.08,145,1712646000"; d="scan'208";a="14887690" X-CSE-ConnectionGUID: k79UkQLiTvaeUai3VC7OFw== X-CSE-MsgGUID: uWkUZbZNR/ilv9+RKq6fwA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.08,145,1712646000"; d="scan'208";a="29541314" From: dongwon.kim@intel.com To: qemu-devel@nongnu.org Cc: marcandre.lureau@redhat.com, philmd@linaro.org, berrange@redhat.com Subject: [PATCH v14 5/6] ui/console: Use qemu_dmabuf_new() and free() helpers instead Date: Wed, 8 May 2024 10:54:02 -0700 Message-Id: <20240508175403.3399895-6-dongwon.kim@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240508175403.3399895-1-dongwon.kim@intel.com> References: <20240508175403.3399895-1-dongwon.kim@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=198.175.65.14; envelope-from=dongwon.kim@intel.com; helo=mgamail.intel.com X-Spam_score_int: -49 X-Spam_score: -5.0 X-Spam_bar: ----- X-Spam_report: (-5.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.582, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1715191178766100003 From: Dongwon Kim 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. Berrang=C3=A9 ) call G_DEFINE_AUTOPTR_CLEANUP_FUNC for qemu_dmabuf_free() (Daniel P. Berrang=C3=A9 ) 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. Berrang=C3=A9 ) 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 v13: --- Immediately free dmabuf after it is released to prevent possible leaking of the ptr (Marc-Andr=C3=A9 Lureau ) --- Use g_autoptr macro to define *dmabuf for auto clean up instead of calling qemu_dmabuf_free (Marc-Andr=C3=A9 Lureau ) v14: --- (vhost-user-gpu) Change qemu_dmabuf_free back to g_clear_pointer as it was done because of some misunderstanding (v13). --- (vhost-user-gpu) g->dmabuf[m->scanout_id] needs to be set to NULL to prevent freed dmabuf to be accessed again in case if(fd=3D=3D-1= )break; happens (before new dmabuf is allocated). Otherwise, it would cause invalid memory access when the same function is executed. Also NULL check should be done before qemu_dmabuf_close (it asserts dmabuf!= =3DNULL.). (Marc-Andr=C3=A9 Lureau ) Suggested-by: Marc-Andr=C3=A9 Lureau Cc: Philippe Mathieu-Daud=C3=A9 Cc: Daniel P. Berrang=C3=A9 Cc: Vivek Kasireddy Signed-off-by: Dongwon Kim --- include/hw/vfio/vfio-common.h | 2 +- include/hw/virtio/virtio-gpu.h | 4 ++-- hw/display/vhost-user-gpu.c | 31 +++++++++++++++++++------------ hw/display/virtio-gpu-udmabuf.c | 24 +++++++++--------------- hw/vfio/display.c | 26 ++++++++++++-------------- ui/dbus-listener.c | 28 ++++++++++++---------------- 6 files changed, 55 insertions(+), 60 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; =20 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) =20 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; }; =20 diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c index 454e5afcff..e4b398d26c 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, VhostUse= rGpuMsg *msg) case VHOST_USER_GPU_DMABUF_SCANOUT: { VhostUserGpuDMABUFScanout *m =3D &msg->payload.dmabuf_scanout; int fd =3D qemu_chr_fe_get_msgfd(&g->vhost_chr); + uint64_t modifier =3D 0; QemuDmaBuf *dmabuf; =20 if (m->scanout_id >=3D g->parent_obj.conf.max_outputs) { @@ -261,27 +262,33 @@ vhost_user_gpu_handle_display(VhostUserGPU *g, VhostU= serGpuMsg *msg) =20 g->parent_obj.enable =3D 1; con =3D g->parent_obj.scanout[m->scanout_id].con; - dmabuf =3D &g->dmabuf[m->scanout_id]; - qemu_dmabuf_close(dmabuf); - dpy_gl_release_dmabuf(con, dmabuf); + dmabuf =3D g->dmabuf[m->scanout_id]; + + if (dmabuf) { + qemu_dmabuf_close(dmabuf); + dpy_gl_release_dmabuf(con, dmabuf); + g_clear_pointer(&dmabuf, qemu_dmabuf_free); + } + if (fd =3D=3D -1) { dpy_gl_scanout_disable(con); + g->dmabuf[m->scanout_id] =3D NULL; break; } - *dmabuf =3D (QemuDmaBuf) { - .fd =3D fd, - .width =3D m->fd_width, - .height =3D m->fd_height, - .stride =3D m->fd_stride, - .fourcc =3D m->fd_drm_fourcc, - .y0_top =3D m->fd_flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP, - }; + if (msg->request =3D=3D VHOST_USER_GPU_DMABUF_SCANOUT2) { VhostUserGpuDMABUFScanout2 *m2 =3D &msg->payload.dmabuf_scanou= t2; - dmabuf->modifier =3D m2->modifier; + modifier =3D m2->modifier; } =20 + dmabuf =3D 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] =3D dmabuf; break; } case VHOST_USER_GPU_DMABUF_UPDATE: { diff --git a/hw/display/virtio-gpu-udmabuf.c b/hw/display/virtio-gpu-udmabu= f.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, VGPUDM= ABuf *dmabuf) struct virtio_gpu_scanout *scanout; =20 scanout =3D &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 } =20 dmabuf =3D g_new0(VGPUDMABuf, 1); - dmabuf->buf.width =3D r->width; - dmabuf->buf.height =3D r->height; - dmabuf->buf.stride =3D fb->stride; - dmabuf->buf.x =3D r->x; - dmabuf->buf.y =3D r->y; - dmabuf->buf.backing_width =3D fb->width; - dmabuf->buf.backing_height =3D fb->height; - dmabuf->buf.fourcc =3D qemu_pixman_to_drm_format(fb->format); - dmabuf->buf.fd =3D res->dmabuf_fd; - dmabuf->buf.allow_fences =3D true; - dmabuf->buf.draw_submitted =3D false; + dmabuf->buf =3D 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 =3D scanout_id; QTAILQ_INSERT_HEAD(&g->dmabuf.bufs, dmabuf, next); =20 @@ -217,11 +211,11 @@ int virtio_gpu_update_dmabuf(VirtIOGPU *g, old_primary =3D g->dmabuf.primary[scanout_id]; } =20 - width =3D qemu_dmabuf_get_width(&new_primary->buf); - height =3D qemu_dmabuf_get_height(&new_primary->buf); + width =3D qemu_dmabuf_get_width(new_primary->buf); + height =3D qemu_dmabuf_get_height(new_primary->buf); g->dmabuf.primary[scanout_id] =3D 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); =20 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(VFIOPCIDev= ice *vdev, =20 dmabuf =3D g_new0(VFIODMABuf, 1); dmabuf->dmabuf_id =3D plane.dmabuf_id; - dmabuf->buf.width =3D plane.width; - dmabuf->buf.height =3D plane.height; - dmabuf->buf.backing_width =3D plane.width; - dmabuf->buf.backing_height =3D plane.height; - dmabuf->buf.stride =3D plane.stride; - dmabuf->buf.fourcc =3D plane.drm_format; - dmabuf->buf.modifier =3D plane.drm_format_mod; - dmabuf->buf.fd =3D fd; + dmabuf->buf =3D 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 =3D=3D DRM_PLANE_TYPE_CURSOR) { vfio_display_update_cursor(dmabuf, &plane); } @@ -261,8 +258,9 @@ static void vfio_display_free_one_dmabuf(VFIODisplay *d= py, VFIODMABuf *dmabuf) { QTAILQ_REMOVE(&dpy->dmabuf.bufs, dmabuf, next); =20 - 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); } =20 @@ -298,13 +296,13 @@ static void vfio_display_dmabuf_update(void *opaque) return; } =20 - width =3D qemu_dmabuf_get_width(&primary->buf); - height =3D qemu_dmabuf_get_height(&primary->buf); + width =3D qemu_dmabuf_get_width(primary->buf); + height =3D qemu_dmabuf_get_height(primary->buf); =20 if (dpy->dmabuf.primary !=3D primary) { dpy->dmabuf.primary =3D 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 =3D true; } =20 @@ -318,7 +316,7 @@ static void vfio_display_dmabuf_update(void *opaque) if (cursor && (new_cursor || cursor->hot_updates)) { bool have_hot =3D (cursor->hot_x !=3D 0xffffffff && cursor->hot_y !=3D 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 =3D 0; } else if (!cursor && new_cursor) { diff --git a/ui/dbus-listener.c b/ui/dbus-listener.c index 62d1e2d3f9..5490088043 100644 --- a/ui/dbus-listener.c +++ b/ui/dbus-listener.c @@ -442,28 +442,24 @@ static void dbus_scanout_texture(DisplayChangeListene= r *dcl, trace_dbus_scanout_texture(tex_id, backing_y_0_top, backing_width, backing_height, x, y, w, h); #ifdef CONFIG_GBM - QemuDmaBuf dmabuf =3D { - .width =3D w, - .height =3D h, - .y0_top =3D backing_y_0_top, - .x =3D x, - .y =3D y, - .backing_width =3D backing_width, - .backing_height =3D backing_height, - }; + g_autoptr(QemuDmaBuf) dmabuf =3D NULL; + int fd; + uint32_t stride, fourcc; + uint64_t modifier; =20 assert(tex_id); - dmabuf.fd =3D egl_get_fd_for_texture( - tex_id, (EGLint *)&dmabuf.stride, - (EGLint *)&dmabuf.fourcc, - &dmabuf.modifier); - if (dmabuf.fd < 0) { + fd =3D egl_get_fd_for_texture(tex_id, (EGLint *)&stride, (EGLint *)&fo= urcc, + &modifier); + if (fd < 0) { error_report("%s: failed to get fd for texture", __func__); return; } + dmabuf =3D qemu_dmabuf_new(w, h, stride, x, y, backing_width, + backing_height, fourcc, modifier, fd, + false, backing_y_0_top); =20 - dbus_scanout_dmabuf(dcl, &dmabuf); - close(dmabuf.fd); + dbus_scanout_dmabuf(dcl, dmabuf); + qemu_dmabuf_close(dmabuf); #endif =20 #ifdef WIN32 --=20 2.34.1