linux-kernel - Re: [PATCH 05/20] x86/uaccess/xen: Suppress SMAP warnings

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Message-ID: <20190310131929.GM2482@worktop.programming.kicks-ass.net>
Date:   Sun, 10 Mar 2019 14:19:29 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     torvalds@...ux-foundation.org, tglx@...utronix.de, hpa@...or.com,
        julien.thierry@....com, will.deacon@....com, luto@...capital.net,
        mingo@...nel.org, catalin.marinas@....com, james.morse@....com,
        valentin.schneider@....com, brgerst@...il.com, luto@...nel.org,
        bp@...en8.de, dvlasenk@...hat.com, linux-kernel@...r.kernel.org,
        dvyukov@...gle.com, rostedt@...dmis.org, andrew.cooper3@...rix.com
Subject: Re: [PATCH 05/20] x86/uaccess/xen: Suppress SMAP warnings

On Fri, Mar 08, 2019 at 01:03:34PM -0600, Josh Poimboeuf wrote:
> On Fri, Mar 08, 2019 at 01:00:38PM -0600, Josh Poimboeuf wrote:
> > On Thu, Mar 07, 2019 at 12:45:16PM +0100, Peter Zijlstra wrote:

> > > XXX: arguably we should rename ANNOTATE_NOSPEC_ALTERNATIVE to
> > >      ANNOTATE_IGNORE_ALTERNATIVE.

> Also this you could get rid of the comment if there were an
> ANNOTATE_AC_SAFE macro which does a similar thing.

How about we just rename the one annotation we have? I figured it was a
waste of LoC to do yet another annotation that does the very same thing.