| commit | d9ada91ae2969ae6b6dc3574fd08a6ebda5df766 | [log] [tgz] |
|---|---|---|
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | Fri Mar 02 11:33:52 2012 +1100 |
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | Fri Mar 09 10:55:20 2012 +1100 |
| tree | a4509657892acb0b853760d6d26729a913a5fc2b | |
| parent | 9424fabf8617c15e18a5ffd29bc3bcfa36620473 [diff] |
powerpc: Replace mfmsr instructions with load from PACA kernel_msr field On 64-bit, the mfmsr instruction can be quite slow, slower than loading a field from the cache-hot PACA, which happens to already contain the value we want in most cases. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>