linux.git/arch/sh/kernel/dump_task.c, branch v2.6.25 Linux kernel source tree sh: Fix occasional FPU register corruption under preempt. 2008-03-26T10:02:47+00:00 Paul Mundt lethal@linux-sh.org 2008-03-26T10:02:47+00:00 9bbafce2eec190ef7e44b0eb1095ba17ce6ad3af 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> 
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: Share the ELF dump_task interfaces. 2008-01-28T04:18:49+00:00 Paul Mundt lethal@linux-sh.org 2007-11-20T06:48:39+00:00 e7e0a4b54a7f225f770d313f9e042f83ece57a35 Signed-off-by: Paul Mundt <lethal@linux-sh.org> 
Signed-off-by: Paul Mundt <lethal@linux-sh.org>