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hw/display: fix virgl reset regression
Before commit 49afbca3b0
("virtio-gpu: drop
use_virgl_renderer"), use_virgl_renderer was preventing calling GL
functions from non-GL context threads. The innocuously looking
g->parent_obj.use_virgl_renderer = false;
was set the first time virtio_gpu_gl_reset() was called, during
pc_machine_reset() in the main thread. Further virtio_gpu_gl_reset()
calls in IO threads, without associated GL context, were thus skipping
GL calls and avoided warnings or crashes (see also
https://gitlab.freedesktop.org/virgl/virglrenderer/-/issues/226).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210702123221.942432-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
parent
f29d52611c
commit
8a13b9bc0f
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@ -51,12 +51,7 @@ static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *g,
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static void virtio_gpu_gl_flushed(VirtIOGPUBase *b)
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{
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VirtIOGPU *g = VIRTIO_GPU(b);
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VirtIOGPUGL *gl = VIRTIO_GPU_GL(b);
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if (gl->renderer_reset) {
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gl->renderer_reset = false;
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virtio_gpu_virgl_reset(g);
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}
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virtio_gpu_process_cmdq(g);
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}
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@ -74,6 +69,10 @@ static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
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virtio_gpu_virgl_init(g);
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gl->renderer_inited = true;
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}
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if (gl->renderer_reset) {
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gl->renderer_reset = false;
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virtio_gpu_virgl_reset(g);
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}
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cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
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while (cmd) {
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@ -95,12 +94,13 @@ static void virtio_gpu_gl_reset(VirtIODevice *vdev)
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virtio_gpu_reset(vdev);
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if (gl->renderer_inited) {
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if (g->parent_obj.renderer_blocked) {
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/*
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* GL functions must be called with the associated GL context in main
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* thread, and when the renderer is unblocked.
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*/
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if (gl->renderer_inited && !gl->renderer_reset) {
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virtio_gpu_virgl_reset_scanout(g);
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gl->renderer_reset = true;
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} else {
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virtio_gpu_virgl_reset(g);
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}
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}
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}
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@ -588,17 +588,21 @@ void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
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virtio_gpu_fence_poll(g);
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}
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void virtio_gpu_virgl_reset(VirtIOGPU *g)
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void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g)
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{
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int i;
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virgl_renderer_reset();
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for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
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dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL);
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dpy_gl_scanout_disable(g->parent_obj.scanout[i].con);
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}
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}
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void virtio_gpu_virgl_reset(VirtIOGPU *g)
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{
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virgl_renderer_reset();
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}
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int virtio_gpu_virgl_init(VirtIOGPU *g)
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{
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int ret;
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@ -279,6 +279,7 @@ int virtio_gpu_update_dmabuf(VirtIOGPU *g,
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void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
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struct virtio_gpu_ctrl_command *cmd);
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void virtio_gpu_virgl_fence_poll(VirtIOGPU *g);
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void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g);
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void virtio_gpu_virgl_reset(VirtIOGPU *g);
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int virtio_gpu_virgl_init(VirtIOGPU *g);
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int virtio_gpu_virgl_get_num_capsets(VirtIOGPU *g);
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