linux-kernel - Re: [PATCH 00/20] objtool: UACCESS validation v3

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Message-ID: <CAHk-=wgE40LzP7KNdEqjEeUQJN3r5Qa-sSymZRMO7CgnMdM57A@mail.gmail.com>
Date:   Thu, 7 Mar 2019 09:48:13 -0800
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     Peter Anvin <hpa@...or.com>, Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Julien Thierry <julien.thierry@....com>,
        Will Deacon <will.deacon@....com>,
        Andy Lutomirski <luto@...capital.net>,
        Ingo Molnar <mingo@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        James Morse <james.morse@....com>, valentin.schneider@....com,
        Brian Gerst <brgerst@...il.com>,
        Andrew Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH 00/20] objtool: UACCESS validation v3

On Thu, Mar 7, 2019 at 9:46 AM Josh Poimboeuf <jpoimboe@...hat.com> wrote:
>
> Is that possible to do in a C macro?  Doesn't seem to work for me...

The meat of that macro could easily be done as a helper inline function.

But as mentioned, I think a better option would be to remove it
entirely, if at all possible.

The best part about that config option is the comment, and while cute
I don't think that's really worth saving it for...

               Linus