Re: [PATCH RT v2] arm64: fpsimd: use a local_lock() in addition to local_bh_disable()

[Sebastian Andrzej Siewior]

On 2018-07-24 09:46:23 [-0400], Steven Rostedt wrote:
> > Unfortunately yes.
> 
> Then we need to find another solution, because this is way too ugly and
> as Dave said, fragile to keep.

Yes. I have something new where Mike said it works (while this causes
Mike's gcc to segfault). Need to test this myself…

> How does local_lock_bh() do a +3 (not seeing it in the code). And

get_local_var() +1
spin_lock_bh() +2 because
        local_bh_disable() +1
        spin_lock() +1

Sebastian