X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-sparc64%2Fmmu_context.h;h=9fc225ed5500d20c5372653389d8783ffc49ef4b;hb=1212663fba7c5e003e05d24f043d5ed57eb18b24;hp=2337eb48771908ca86f94a1a5d4cba3d42c0e43d;hpb=d62e54abca1146981fc9f98f85ff398a113a22c2;p=linux-2.6

diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h
index 2337eb4877..9fc225ed55 100644
--- a/include/asm-sparc64/mmu_context.h
+++ b/include/asm-sparc64/mmu_context.h
@@ -9,6 +9,7 @@
 #include <linux/spinlock.h>
 #include <asm/system.h>
 #include <asm/spitfire.h>
+#include <asm-generic/mm_hooks.h>
 
 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
@@ -75,6 +76,9 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str
 	unsigned long ctx_valid, flags;
 	int cpu;
 
+	if (unlikely(mm == &init_mm))
+		return;
+
 	spin_lock_irqsave(&mm->context.lock, flags);
 	ctx_valid = CTX_VALID(mm->context);
 	if (!ctx_valid)