linux-kernel - Re: [PATCH] minmax: clamp more efficiently by avoiding extra comparison

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Message-ID: <CAHmME9rH47UFp6sXbDU0UZrTosFrDAa+m_FtqMqRFFNzmOzTdA@mail.gmail.com>
Date:   Fri, 23 Sep 2022 17:13:34 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH] minmax: clamp more efficiently by avoiding extra comparison

On Fri, Sep 23, 2022 at 5:12 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> On Fri, Sep 23, 2022 at 12:48:48PM +0200, Jason A. Donenfeld wrote:
> > On Fri, Sep 23, 2022 at 12:40 PM Jason A. Donenfeld <Jason@...c4.com> wrote:
>
> ...
>
> > both for the old code and for the new code, the result of lo>hi is
> > total nonsense:
>
> Exactly and my point is to add at least compile-time check for constants.

Cool okay. Rolling v2 now.

Jason