From c0fcd6334ff673b571ac068f28b6b779bdade8a2 Mon Sep 17 00:00:00 2001 From: Dongwon Kim Date: Wed, 8 May 2024 10:54:02 -0700 Subject: ui/console: Use qemu_dmabuf_new() and free() helpers instead MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 ) call G_DEFINE_AUTOPTR_CLEANUP_FUNC for qemu_dmabuf_free() (Daniel P. Berrangé ) 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 ) 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-André Lureau ) --- Use g_autoptr macro to define *dmabuf for auto clean up instead of calling qemu_dmabuf_free (Marc-André 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==-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!=NULL.). (Marc-André Lureau ) Suggested-by: Marc-André Lureau Cc: Philippe Mathieu-Daudé Cc: Daniel P. Berrangé Cc: Vivek Kasireddy Signed-off-by: Dongwon Kim Message-Id: <20240508175403.3399895-6-dongwon.kim@intel.com> --- hw/display/vhost-user-gpu.c | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) (limited to 'hw/display/vhost-user-gpu.c') 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, 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 +262,33 @@ 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]; - qemu_dmabuf_close(dmabuf); - dpy_gl_release_dmabuf(con, dmabuf); + dmabuf = 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 == -1) { dpy_gl_scanout_disable(con); + g->dmabuf[m->scanout_id] = NULL; 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: { -- cgit 1.4.1