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    SubjectRe: [PATCH] Make math_state_restore() save and restore the interrupt flag
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    On Sat, Feb 1, 2014 at 5:26 PM, H. Peter Anvin <hpa@zytor.com> wrote:
    > Even "b" does that, no?

    oh right. It needs an else. only for non-eager fpu case we should do stts()

    void __kernel_fpu_end(void)
    {
    if (use_eager_fpu()) {
    struct task_struct *me = current;

    if (tsk_used_math(me) && likely(!restore_fpu_checking(
    me)))
    return;
    } else
    stts();
    }

    thanks,
    suresh

    > "a" should be fine as long as we don't ever use
    > those features in the kernel, even under kernel_fpu_begin/end().


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