Re: [PATCH] Make math_state_restore() save and restore the interrupt flag

[Suresh Siddha]

On Sat, Feb 1, 2014 at 5:38 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> It definitely does not want an else, I think.
>
> If tsk_used_math() is false, or if the FPU restore failed, we
> *definitely* need that stts(). Otherwise we'd return to user mode with
> random contents in the FP state, and let user mode muck around with
> it.
>
> No?

So if the restore failed, we should do something like drop_init_fpu(),
which will restore init-state to the registers.

for eager-fpu()  paths we don't use clts() stts() etc.

thanks,
suresh
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