Keep track of physical address of io pages; submit random fill on shadow update

1 files changed, 12 insertions, 0 deletions

diff --git a/TODO b/TODO
index 6c73efc..d491118 100644
--- a/TODO
+++ b/TODO
@@ -5,3 +5,15 @@
 
 - Get rid of qxl_mem.h header; just use qxl.h
 
+
+Question:
+
+- What is the "vram" PCI range used for? 
+
+  As I read the Windows driver, it can be mapped with the ioctl
+  VIDEO_MAP_VIDEO_MEMORY. In driver.c it is mapped as pdev->fb, but
+  it is then never used for anything as far as I can tell.
+
+  Does Windows itself use that ioctl, and if so, for what. The area
+  is only 32K in size so it can't really be used for any realistic
+  bitmaps.