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Date: Wed, 25 Jun 2014 19:32:45 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Kees Cook <keescook@chromium.org>, LKML <linux-kernel@vger.kernel.org>,
        "Michael Kerrisk (man-pages)" <mtk.manpages@gmail.com>,
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Subject: Re: [PATCH v8 5/9] seccomp: split mode set routines
Message-ID: <20140625173245.GA17695@redhat.com>
References: <1403642893-23107-1-git-send-email-keescook@chromium.org> <1403642893-23107-6-git-send-email-keescook@chromium.org> <20140625135121.GB7892@redhat.com> <CAGXu5jJkFxh4K=40xuh6tu3kUf4oJM8Dry+4upBdRieW3FNLgw@mail.gmail.com> <CALCETrUBNmLnpa+LM91om2RSpR6SjupP-EdefzhU1Me4nv3Dfw@mail.gmail.com> <CAGXu5j+J11zJnuFR8bYKAXizAHhCx4R+uJE_QH6zC3q2udkpaQ@mail.gmail.com> <CALCETrVrs8sb19+UUqyFEpAFzTih5dkAwn-WpQjfgPcPJMpP5g@mail.gmail.com>
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On 06/25, Andy Lutomirski wrote:
>
> Write the filter, then smp_mb (or maybe a weaker barrier is okay),
> then set the bit.

Yes, exactly, this is what I meant. Plas rmb() in __secure_computing().

But I still can't understand the rest of your discussion about the
ordering we need ;)

Oleg.