---
 linux-2.6-xen-sparse/drivers/xen/fbfront/xenfb.c |    8 +++++++-
 xen/include/public/io/fbif.h                     |    5 +++++
 2 files changed, 12 insertions(+), 1 deletion(-)

Index: build-32-unstable-13495/linux-2.6-xen-sparse/drivers/xen/fbfront/xenfb.c
===================================================================
--- build-32-unstable-13495.orig/linux-2.6-xen-sparse/drivers/xen/fbfront/xenfb.c
+++ build-32-unstable-13495/linux-2.6-xen-sparse/drivers/xen/fbfront/xenfb.c
@@ -479,7 +479,7 @@ static int __devinit xenfb_probe(struct 
 		goto error_nomem;
 
 	/* set up shared page */
-	info->page = (void *)__get_free_page(GFP_KERNEL);
+	info->page = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
 	if (!info->page)
 		goto error_nomem;
 
@@ -600,6 +600,12 @@ static void xenfb_init_shared_page(struc
 	for (i = 0; i < info->nr_pages; i++)
 		info->mfns[i] = vmalloc_to_mfn(info->fb + i * PAGE_SIZE);
 
+#if defined(__i386__)
+	info->page->protocol = 1;
+#elif defined(__x86_64__) || defined(__ia64__)
+	info->page->protocol = 2;
+#endif
+
 	info->page->pd[0] = vmalloc_to_mfn(info->mfns);
 	info->page->pd[1] = 0;
 	info->page->width = XENFB_WIDTH;
Index: build-32-unstable-13495/xen/include/public/io/fbif.h
===================================================================
--- build-32-unstable-13495.orig/xen/include/public/io/fbif.h
+++ build-32-unstable-13495/xen/include/public/io/fbif.h
@@ -102,6 +102,11 @@ struct xenfb_page
     uint32_t line_length;   /* the length of a row of pixels (in bytes) */
     uint32_t mem_length;    /* the length of the framebuffer (in bytes) */
     uint8_t depth;          /* the depth of a pixel (in bits) */
+    uint8_t protocol;       /* protocol version
+                             *    1 -- page directory: i386
+                             *    2 -- page directory: x86_64, ia64
+                             *    3 -- grant tables [not yet]
+                             */
 
     /*
      * Framebuffer page directory