OpenCloudOS-Kernel

Commit Graph

Author	SHA1	Message	Date
Paul Mundt	9bbafce2ee	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>	2008-03-26 19:02:47 +09:00
Paul Mundt	e7e0a4b54a	sh: Share the ELF dump_task interfaces. Signed-off-by: Paul Mundt <lethal@linux-sh.org>	2008-01-28 13:18:49 +09:00

Author

SHA1

Message

Date

Paul Mundt

9bbafce2ee

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>

2008-03-26 19:02:47 +09:00

Paul Mundt

e7e0a4b54a

sh: Share the ELF dump_task interfaces.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

2008-01-28 13:18:49 +09:00

2 Commits