--- zzzz-none-000/linux-2.6.19.2/include/asm-ppc/mmu_context.h	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/include/asm-ppc/mmu_context.h	2007-01-19 14:42:56.000000000 +0000
@@ -144,7 +144,8 @@
 static inline int init_new_context(struct task_struct *t, struct mm_struct *mm)
 {
 	mm->context.id = NO_CONTEXT;
-	mm->context.vdso_base = 0;
+	if (t == current)
+		mm->context.vdso_base = ~0UL;
 	return 0;
 }