Add an option to EXA for the DDX to request that EXA hide the pixmap's

    devPrivate.ptr when pointing at offscreen memory, outside of
    exaPrepare/FinishAccess(). This was used with fakexa to find (by NULL
    dereference) many instances of un-Prepared CPU access to the
    framebuffer:
- GC tiles used in several ops when fillStyle == FillTiled were never
    Prepared.
- Migration could lead to un-Prepared access to mask data in render's
    Trapezoids and Triangles
- PutImage's UploadToScreen failure fallback failed to Prepare.

1 files changed, 2 insertions, 1 deletions

diff --git a/hw/kdrive/ephyr/ephyr.h b/hw/kdrive/ephyr/ephyr.h
index 3d468afd9..707cb0168 100644
--- a/hw/kdrive/ephyr/ephyr.h
+++ b/hw/kdrive/ephyr/ephyr.h
@@ -55,7 +55,8 @@ typedef struct _ephyrFakexaPriv {
      */
     int op;
     PicturePtr pSrcPicture, pMaskPicture, pDstPicture;
-    PixmapPtr pSrc, pDst;
+    void *saved_ptrs[3];
+    PixmapPtr pDst, pSrc, pMask;
     GCPtr pGC;
 } EphyrFakexaPriv;