Hi,
I have a quick question.
The math_state_restore() restores the FPU/MMX/XMM states.
However where do we save the previous task's states if it is necessary?
asmlinkage void math_state_restore(struct pt_regs regs)
{
struct thread_info *thread = current_thread_info();
struct task_struct *tsk = thread->task;
clts(); /* Allow maths ops (or we recurse) */
if (!tsk_used_math(tsk))
init_fpu(tsk);
restore_fpu(tsk);
thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */
}
Thanks in advance,
Hiro
--
Hiro Yoshioka
mailto:hyoshiok at miraclelinux.com
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