Re: [PATCH] futex: Set USER_DS for the futex_detect_cmpxchg() test

[Max Filippov]

On Fri, Sep 28, 2018 at 11:02 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
> There may be a much nicer solution.  Unless I missed something, only
> mips and xtensa even have the possibility of cmpxchg being missing.
> We could just make those arches supply a futex-detecting helper.

In case of xtensa availability of cmpxchg is known at build time.

-- 
Thanks.
-- Max