On Sat, Feb 1, 2014 at 5:35 PM, Suresh Siddha <[email protected]> wrote:
> On Sat, Feb 1, 2014 at 5:26 PM, H. Peter Anvin <[email protected]> wrote:
>> Even "b" does that, no?
>
> oh right. It needs an else. only for non-eager fpu case we should do stts()
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?
Linus
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