qxl: store memory region and offset instead of pointer for guest slots

Store MemoryRegion and offset instead of a pointer for each qxl memory
slot, so we can easily figure in which memory region an qxl object
stored.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1466597244-5938-2-git-send-email-kraxel@redhat.com

1 files changed, 2 insertions, 1 deletions

diff --git a/hw/display/qxl.h b/hw/display/qxl.h
index 39ff00407d..fdb619d4a7 100644
--- a/hw/display/qxl.h
+++ b/hw/display/qxl.h
@@ -53,7 +53,8 @@ typedef struct PCIQXLDevice {
 
     struct guest_slots {
         QXLMemSlot     slot;
-        void           *ptr;
+        MemoryRegion   *mr;
+        uint64_t       offset;
         uint64_t       size;
         uint64_t       delta;
         uint32_t       active;