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From 6bf01418f12a88167ec2a3244ca7b245a53c60ae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Wed, 16 Oct 2019 13:53:27 +0100
Subject: [PATCH 1/2] virtio-gpu: block both 2d and 3d rendering
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RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20191016135327.23601-1-marcandre.lureau@redhat.com>
Patchwork-id: 91814
O-Subject: [RHEL-8.2.0 qemu-kvm PATCH] virtio-gpu: block both 2d and 3d rendering
Bugzilla: 1674324
RH-Acked-by: John Snow <jsnow@redhat.com>
RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>

BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1674324
BRANCH: rhel-8.2.0
UPSTREAM: ad341aacbf4b119a88e0f9d5a1f753d6ed0fdd86
BREW: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=24095898

Now that 2d commands are translated to 3d rendering, qemu must stop
sending 3d updates (from 2d) to Spice as well.

Fixes:
https://bugzilla.redhat.com/show_bug.cgi?id=1674324

Cc: cfergeau@redhat.com
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Christophe Fergeau <cfergeau@redhat.com>
Tested-by: Christophe Fergeau <cfergeau@redhat.com>
Message-id: 20190221114330.17968-4-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

(cherry picked from commit ad341aacbf4b119a88e0f9d5a1f753d6ed0fdd86)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
 hw/display/virtio-gpu-3d.c     | 21 ---------------------
 hw/display/virtio-gpu.c        | 27 ++++++++++++++++++++++-----
 include/hw/virtio/virtio-gpu.h |  1 -
 3 files changed, 22 insertions(+), 27 deletions(-)

diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
index 55d7640..9654c04 100644
--- a/hw/display/virtio-gpu-3d.c
+++ b/hw/display/virtio-gpu-3d.c
@@ -404,11 +404,6 @@ void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 {
     VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
 
-    cmd->waiting = g->renderer_blocked;
-    if (cmd->waiting) {
-        return;
-    }
-
     virgl_renderer_force_ctx_0();
     switch (cmd->cmd_hdr.type) {
     case VIRTIO_GPU_CMD_CTX_CREATE:
@@ -604,22 +599,6 @@ void virtio_gpu_virgl_reset(VirtIOGPU *g)
     }
 }
 
-void virtio_gpu_gl_block(void *opaque, bool block)
-{
-    VirtIOGPU *g = opaque;
-
-    if (block) {
-        g->renderer_blocked++;
-    } else {
-        g->renderer_blocked--;
-    }
-    assert(g->renderer_blocked >= 0);
-
-    if (g->renderer_blocked == 0) {
-        virtio_gpu_process_cmdq(g);
-    }
-}
-
 int virtio_gpu_virgl_init(VirtIOGPU *g)
 {
     int ret;
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 07712d0..416ef80 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -888,12 +888,15 @@ void virtio_gpu_process_cmdq(VirtIOGPU *g)
     while (!QTAILQ_EMPTY(&g->cmdq)) {
         cmd = QTAILQ_FIRST(&g->cmdq);
 
-        /* process command */
-        VIRGL(g, virtio_gpu_virgl_process_cmd, virtio_gpu_simple_process_cmd,
-              g, cmd);
+        cmd->waiting = g->renderer_blocked;
         if (cmd->waiting) {
             break;
         }
+
+        /* process command */
+        VIRGL(g, virtio_gpu_virgl_process_cmd, virtio_gpu_simple_process_cmd,
+              g, cmd);
+
         QTAILQ_REMOVE(&g->cmdq, cmd, next);
         if (virtio_gpu_stats_enabled(g->conf)) {
             g->stats.requests++;
@@ -1029,14 +1032,28 @@ static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
     return 0;
 }
 
+static void virtio_gpu_gl_block(void *opaque, bool block)
+{
+    VirtIOGPU *g = opaque;
+
+    if (block) {
+        g->renderer_blocked++;
+    } else {
+        g->renderer_blocked--;
+    }
+    assert(g->renderer_blocked >= 0);
+
+    if (g->renderer_blocked == 0) {
+        virtio_gpu_process_cmdq(g);
+    }
+}
+
 const GraphicHwOps virtio_gpu_ops = {
     .invalidate = virtio_gpu_invalidate_display,
     .gfx_update = virtio_gpu_update_display,
     .text_update = virtio_gpu_text_update,
     .ui_info = virtio_gpu_ui_info,
-#ifdef CONFIG_VIRGL
     .gl_block = virtio_gpu_gl_block,
-#endif
 };
 
 static const VMStateDescription vmstate_virtio_gpu_scanout = {
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index f95f8ce..bbeddd7 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -171,7 +171,6 @@ 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(VirtIOGPU *g);
-void virtio_gpu_gl_block(void *opaque, bool block);
 int virtio_gpu_virgl_init(VirtIOGPU *g);
 int virtio_gpu_virgl_get_num_capsets(VirtIOGPU *g);
 #endif
-- 
1.8.3.1