Changeset 82079 in vbox for trunk/src/VBox/Devices/Graphics/DevVGA-SVGA.h

Timestamp:

Nov 21, 2019 12:46:06 PM (5 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

134885

Message:

DevVGA: Map the first page of the FIFO into ring-0 so we can safely access the SVGA_FIFO_MIN, SVGA_FIFO_PITCHLOCK, and SVGA_FIFO_BUSY registers from there. bugref:9218

File:

• trunk/src/VBox/Devices/Graphics/DevVGA-SVGA.h (modified) (1 diff)

trunk/src/VBox/Devices/Graphics/DevVGA-SVGA.h

@@ -168 +168 @@
     /** The R3 FIFO pointer. */
     R3PTRTYPE(uint32_t *)       pFIFOR3;
-    /** The R0 FIFO pointer. */
+    /** The R0 FIFO pointer.
+     * @note This only points to the _first_ _page_ of the FIFO!  */
     R0PTRTYPE(uint32_t *)       pFIFOR0;
     /** R3 Opaque pointer to svga state. */