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* sh: Fix occasional FPU register corruption under preempt.Paul Mundt2008-03-26
| | | | | | | | | | | 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>
* sh: comment tidying for sh64->sh migration.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Bring the SH-5 FPU in line with the SH-4 FPU API.Paul Mundt2008-01-27
| | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Move over and enable FPU support for SH-5.Paul Mundt2008-01-27
Signed-off-by: Paul Mundt <lethal@linux-sh.org>