--- arch/x86/xen/enlighten.c

+++ arch/x86/xen/enlighten.c

@@ -48,6 +48,7 @@

#include <asm/traps.h>

#include <asm/setup.h>

#include <asm/desc.h>

+#include <asm/pgalloc.h>

#include <asm/pgtable.h>

#include <asm/tlbflush.h>

#include <asm/reboot.h>

@@ -1092,6 +1093,12 @@ asmlinkage void __init xen_start_kernel(

__supported_pte_mask |= _PAGE_IOMAP;

+ /*

+ * Prevent page tables from being allocated in highmem, even

+ * if CONFIG_HIGHPTE is enabled.

+ */

+ __userpte_alloc_gfp &= ~__GFP_HIGHMEM;

+

#ifdef CONFIG_X86_64

/* Work out if we support NX */

check_efer();