Messages in this thread | | | Date | Sat, 1 Feb 2014 17:35:13 -0800 | Subject | Re: [PATCH] Make math_state_restore() save and restore the interrupt flag | From | Suresh Siddha <> |
| |
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().
| |