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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [RFC PATCH v3 5/7] virtio-gpu: Destroy virgl resources on virtio-gpu reset Date: Thu, 20 Nov 2025 07:06:30 +0300 Message-ID: <20251120040632.4036204-6-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251120040632.4036204-1-dmitry.osipenko@collabora.com> References: <20251120040632.4036204-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-ZohoMailClient: External Received-SPF: pass client-ip=136.143.184.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender3-pp-f112.zoho.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Properly destroy virgl resources on virtio-gpu reset to not leak resources on a hot reboot of a VM. Suggested-by: Akihiko Odaki Signed-off-by: Dmitry Osipenko --- hw/display/virtio-gpu-gl.c | 6 ++- hw/display/virtio-gpu-virgl.c | 79 +++++++++++++++++++++++++--------- include/hw/virtio/virtio-gpu.h | 5 ++- 3 files changed, 67 insertions(+), 23 deletions(-) diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c index b640900fc6f1..bca7d489c1e3 100644 --- a/hw/display/virtio-gpu-gl.c +++ b/hw/display/virtio-gpu-gl.c @@ -72,7 +72,10 @@ static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) switch (gl->renderer_state) { case RS_RESET: - virtio_gpu_virgl_reset(g); + if (virtio_gpu_virgl_reset(g) < 0) { + gl->renderer_state = RS_INIT_FAILED; + return; + } /* fallthrough */ case RS_START: if (virtio_gpu_virgl_init(g)) { @@ -201,6 +204,7 @@ static void virtio_gpu_gl_class_init(ObjectClass *klass, const void *data) vgc->process_cmd = virtio_gpu_virgl_process_cmd; vgc->update_cursor_data = virtio_gpu_gl_update_cursor_data; + vgc->resource_destroy = virtio_gpu_virgl_resource_destroy; vdc->realize = virtio_gpu_gl_device_realize; vdc->unrealize = virtio_gpu_gl_device_unrealize; vdc->reset = virtio_gpu_gl_reset; diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c index ae8de8ee47da..24d329022da9 100644 --- a/hw/display/virtio-gpu-virgl.c +++ b/hw/display/virtio-gpu-virgl.c @@ -311,14 +311,44 @@ static void virgl_cmd_create_resource_3d(VirtIOGPU *g, virgl_renderer_resource_create(&args, NULL, 0); } +static int +virtio_gpu_virgl_resource_unref(VirtIOGPU *g, + struct virtio_gpu_virgl_resource *res, + bool *cmd_suspended) +{ + struct iovec *res_iovs = NULL; + int num_iovs = 0; + +#if VIRGL_VERSION_MAJOR >= 1 + if (virtio_gpu_virgl_unmap_resource_blob(g, res, cmd_suspended) < 0) { + return -1; + } + if (*cmd_suspended) { + return 0; + } +#endif + + virgl_renderer_resource_detach_iov(res->base.resource_id, + &res_iovs, + &num_iovs); + if (res_iovs != NULL && num_iovs != 0) { + virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs); + } + virgl_renderer_resource_unref(res->base.resource_id); + + QTAILQ_REMOVE(&g->reslist, &res->base, next); + + g_free(res); + + return 0; +} + static void virgl_cmd_resource_unref(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd, bool *cmd_suspended) { struct virtio_gpu_resource_unref unref; struct virtio_gpu_virgl_resource *res; - struct iovec *res_iovs = NULL; - int num_iovs = 0; VIRTIO_GPU_FILL_CMD(unref); trace_virtio_gpu_cmd_res_unref(unref.resource_id); @@ -331,27 +361,21 @@ static void virgl_cmd_resource_unref(VirtIOGPU *g, return; } -#if VIRGL_VERSION_MAJOR >= 1 - if (virtio_gpu_virgl_unmap_resource_blob(g, res, cmd_suspended) < 0) { - cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; - return; - } - if (*cmd_suspended) { - return; - } -#endif + virtio_gpu_virgl_resource_unref(g, res, cmd_suspended); +} - virgl_renderer_resource_detach_iov(unref.resource_id, - &res_iovs, - &num_iovs); - if (res_iovs != NULL && num_iovs != 0) { - virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs); - } - virgl_renderer_resource_unref(unref.resource_id); +void virtio_gpu_virgl_resource_destroy(VirtIOGPU *g, + struct virtio_gpu_simple_resource *base, + Error **errp) +{ + struct virtio_gpu_virgl_resource *res; + bool suspended = false; - QTAILQ_REMOVE(&g->reslist, &res->base, next); + res = container_of(base, struct virtio_gpu_virgl_resource, base); - g_free(res); + if (virtio_gpu_virgl_resource_unref(g, res, &suspended) < 0) { + error_setg(errp, "failed to destroy virgl resource"); + } } static void virgl_cmd_context_create(VirtIOGPU *g, @@ -1270,11 +1294,24 @@ void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g) } } -void virtio_gpu_virgl_reset(VirtIOGPU *g) +int virtio_gpu_virgl_reset(VirtIOGPU *g) { + struct virtio_gpu_simple_resource *res, *tmp; + + QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { + virtio_gpu_virgl_resource_destroy(g, res, NULL); + } + + if (!QTAILQ_EMPTY(&g->reslist)) { + error_report("failed to reset virgl resources"); + return -1; + } + virgl_renderer_reset(); virtio_gpu_virgl_reset_async_fences(g); + + return 0; } int virtio_gpu_virgl_init(VirtIOGPU *g) diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 718332284305..9e1473d1bb66 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -389,9 +389,12 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd); void virtio_gpu_virgl_fence_poll(VirtIOGPU *g); void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g); -void virtio_gpu_virgl_reset(VirtIOGPU *g); +int virtio_gpu_virgl_reset(VirtIOGPU *g); int virtio_gpu_virgl_init(VirtIOGPU *g); GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g); void virtio_gpu_virgl_reset_async_fences(VirtIOGPU *g); +void virtio_gpu_virgl_resource_destroy(VirtIOGPU *g, + struct virtio_gpu_simple_resource *res, + Error **errp); #endif -- 2.51.1