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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-04-05 14:34:58 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-04-20 11:03:25 +1000 |
| commit | dd797738643cd3c2dd9cdff7e4c3a04d318ab23a (patch) | |
| tree | f8980e617597c0438da133e529656e0b5489db00 /arch/powerpc/kernel/head_64.S | |
| parent | 948cf67c4726cca2fc57533dccadfb54d890689d (diff) | |
powerpc: Perform an isync to synchronize CPUs coming out of secondary_hold
We need to do that to guarantee they see any code change done by
dynamic patching during boot.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/head_64.S')
| -rw-r--r-- | arch/powerpc/kernel/head_64.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 0700e1135c91..6d17c37f22a1 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -147,6 +147,8 @@ __secondary_hold: mtctr r4 mr r3,r24 li r4,0 + /* Make sure that patched code is visible */ + isync bctr #else BUG_OPCODE |