diff --git a/exa/exa.h b/exa/exa.h
index 1ff0518..2a3f514 100644
--- a/exa/exa.h
+++ b/exa/exa.h
@@ -767,6 +767,9 @@ ExaOffscreenArea *
 exaOffscreenFree(ScreenPtr pScreen, ExaOffscreenArea *area);
 
 void
+exaOffscreenUpdateBase(ScreenPtr pScreen, int new_base);
+
+void
 ExaOffscreenMarkUsed (PixmapPtr pPixmap);
 
 unsigned long
diff --git a/exa/exa_offscreen.c b/exa/exa_offscreen.c
index c666b00..1eabd7a 100644
--- a/exa/exa_offscreen.c
+++ b/exa/exa_offscreen.c
@@ -256,6 +256,27 @@ exaOffscreenAlloc (ScreenPtr pScreen, int size, int align,
 }
 
 /**
+ * If the offscreen area moves (e.g. during a VT switch), relocate it
+ * to a new location specified by new_base.
+ */
+void
+exaOffscreenUpdateBase (ScreenPtr pScreen, int new_base)
+{
+    ExaOffscreenArea *area;
+    ExaScreenPriv (pScreen);
+
+    DBG_OFFSCREEN (("Validating offscreen memory prior to relocation.\n"));
+    ExaOffscreenValidate (pScreen);
+
+    /* Update the base address of the offscreen area */
+    for (area = pExaScr->info->offScreenAreas; area; area = area->next)
+	area->base_offset = new_base;
+
+    DBG_OFFSCREEN (("Relocation complete, re-validating\n"));
+    ExaOffscreenValidate (pScreen);
+}
+
+/**
  * Ejects all offscreen areas, and uninitializes the offscreen memory manager.
  */
 void