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authorDavid S. Miller <davem@sunset.davemloft.net>2007-07-16 03:49:40 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-16 04:05:32 -0700
commite0204409df29fe1b7d18f81dfc3ae6f9d90e7a63 (patch)
tree66f670c0f182d02185f2f3ea6bb7bb97c165ff3b /include/asm-sparc64/mmu_context.h
parentf3c681c028846bd5d39f563909409832a295ca69 (diff)
[SPARC64]: dr-cpu unconfigure support.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64/mmu_context.h')
-rw-r--r--include/asm-sparc64/mmu_context.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-sparc64/mmu_context.h b/include/asm-sparc64/mmu_context.h
index 8d129032013..9fc225ed550 100644
--- a/include/asm-sparc64/mmu_context.h
+++ b/include/asm-sparc64/mmu_context.h
@@ -76,6 +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)