Merge branch 'omap-boards' into omap-for-linus

[pandora-kernel.git] / arch / mips / include / asm / pgtable-64.h

diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h
index 26dc69d..1be4b0f 100644 (file)
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -120,9 +120,14 @@
 #endif
 #define FIRST_USER_ADDRESS     0UL
 
-#define VMALLOC_START          MAP_BASE
+/*
+ * TLB refill handlers also map the vmalloc area into xuseg.  Avoid
+ * the first couple of pages so NULL pointer dereferences will still
+ * reliably trap.
+ */
+#define VMALLOC_START          (MAP_BASE + (2 * PAGE_SIZE))
 #define VMALLOC_END    \
-       (VMALLOC_START + \
+       (MAP_BASE + \
         min(PTRS_PER_PGD * PTRS_PER_PMD * PTRS_PER_PTE * PAGE_SIZE, \
             (1UL << cpu_vmbits)) - (1UL << 32))