X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=ui%2Fconsole.c;h=419b098c11f50f8ed2842fd9d50b7a3cab2f623f;hb=ca0b64e5ed5c60543ff4758c858f65cd090512f0;hp=22c3c7dd2d2e3c3b7f0c3b6059a5a56080bc83ad;hpb=f4c36bdab6a1ec1cfe6508e27c9c60a802b5d084;p=mirror_qemu.git

diff --git a/ui/console.c b/ui/console.c
index 22c3c7dd2d..419b098c11 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1575,34 +1575,36 @@ bool dpy_gfx_check_format(QemuConsole *con,
     return true;
 }
 
-static void dpy_refresh(DisplayState *s)
+/*
+ * Safe DPY refresh for TCG guests. We use the exclusive mechanism to
+ * ensure the TCG vCPUs are quiescent so we can avoid races between
+ * dirty page tracking for direct frame-buffer access by the guest.
+ *
+ * This is a temporary stopgap until we've fixed the dirty tracking
+ * races in display adapters.
+ */
+static void do_safe_dpy_refresh(DisplayChangeListener *dcl)
 {
-    DisplayChangeListener *dcl;
-
-    QLIST_FOREACH(dcl, &s->listeners, next) {
-        if (dcl->ops->dpy_refresh) {
-            dcl->ops->dpy_refresh(dcl);
-        }
-    }
+    qemu_mutex_unlock_iothread();
+    start_exclusive();
+    qemu_mutex_lock_iothread();
+    dcl->ops->dpy_refresh(dcl);
+    qemu_mutex_unlock_iothread();
+    end_exclusive();
+    qemu_mutex_lock_iothread();
 }
 
-void dpy_gfx_copy(QemuConsole *con, int src_x, int src_y,
-                  int dst_x, int dst_y, int w, int h)
+static void dpy_refresh(DisplayState *s)
 {
-    DisplayState *s = con->ds;
     DisplayChangeListener *dcl;
 
-    if (!qemu_console_is_visible(con)) {
-        return;
-    }
     QLIST_FOREACH(dcl, &s->listeners, next) {
-        if (con != (dcl->con ? dcl->con : active_console)) {
-            continue;
-        }
-        if (dcl->ops->dpy_gfx_copy) {
-            dcl->ops->dpy_gfx_copy(dcl, src_x, src_y, dst_x, dst_y, w, h);
-        } else { /* TODO */
-            dcl->ops->dpy_gfx_update(dcl, dst_x, dst_y, w, h);
+        if (dcl->ops->dpy_refresh) {
+            if (tcg_enabled()) {
+                do_safe_dpy_refresh(dcl);
+            } else {
+                dcl->ops->dpy_refresh(dcl);
+            }
         }
     }
 }
@@ -1735,6 +1737,17 @@ QEMUGLContext dpy_gl_ctx_get_current(QemuConsole *con)
     return con->gl->ops->dpy_gl_ctx_get_current(con->gl);
 }
 
+void dpy_gl_scanout_disable(QemuConsole *con)
+{
+    assert(con->gl);
+    if (con->gl->ops->dpy_gl_scanout_disable) {
+        con->gl->ops->dpy_gl_scanout_disable(con->gl);
+    } else {
+        con->gl->ops->dpy_gl_scanout_texture(con->gl, 0, false, 0, 0,
+                                             0, 0, 0, 0);
+    }
+}
+
 void dpy_gl_scanout_texture(QemuConsole *con,
                             uint32_t backing_id,
                             bool backing_y_0_top,
@@ -2127,13 +2140,6 @@ void qemu_console_resize(QemuConsole *s, int width, int height)
     dpy_gfx_replace_surface(s, surface);
 }
 
-void qemu_console_copy(QemuConsole *con, int src_x, int src_y,
-                       int dst_x, int dst_y, int w, int h)
-{
-    assert(con->console_type == GRAPHIC_CONSOLE);
-    dpy_gfx_copy(con, src_x, src_y, dst_x, dst_y, w, h);
-}
-
 DisplaySurface *qemu_console_surface(QemuConsole *console)
 {
     return console->surface;