| commit | 9bbafce2eec190ef7e44b0eb1095ba17ce6ad3af | [log] [tgz] |
|---|---|---|
| author | Paul Mundt <lethal@linux-sh.org> | Wed Mar 26 19:02:47 2008 +0900 |
| committer | Paul Mundt <lethal@linux-sh.org> | Wed Mar 26 19:02:47 2008 +0900 |
| tree | 8deae79efc43d39763bdba8ca9b670e6a1782859 | |
| parent | 05dda977f2574c3341abef9b74c27d2b362e1e3a [diff] |
sh: Fix occasional FPU register corruption under preempt. Presently with preempt enabled there's the possibility to be preempted after the TIF_USEDFPU test and the register save, leading to bogus state post-__switch_to(). Use an explicit preempt_disable()/enable() pair around unlazy_fpu()/clear_fpu() to avoid this. Follows the x86 change. Reported-by: Takuo Koguchi <takuo.koguchi.sw@hitachi.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>