linux-kernel - Re: [PATCH v2 00/19] objtool: vmlinux.o and noinstr validation

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Date:   Tue, 17 Mar 2020 16:05:03 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org, x86@...nel.org,
        mhiramat@...nel.org, mbenes@...e.cz, brgerst@...il.com
Subject: Re: [PATCH v2 00/19] objtool: vmlinux.o and noinstr validation

On Tue, Mar 17, 2020 at 06:02:34PM +0100, Peter Zijlstra wrote:
> Hi all,
> 
> Moar patches. This implements the proposed objtool validation for the
> 
>   noinstr -- function attribute
>   instr_{begin,end}() -- annotation
> 
> Who's purpose is to annotate such code that has constraints on instrumentation
> -- such as early exception code. Specifically it makes it very hard to
> accidentally add code to such regions.
> 
> I've left the whole noinstr naming in place, we'll bike-shed on that later.
> 
> This should address all feedback from RFC/v1.

Looks good to me, other than a few minor comments on patch 16.

Acked-by: Josh Poimboeuf <jpoimboe@...hat.com>

-- 
Josh