linux-kernel - Re: objtool "no non-local symbols" error with tip of tree LLVM

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Message-ID: <20220518180428.6yxf6tcqvzdvtfxb@treble>
Date:   Wed, 18 May 2022 11:04:28 -0700
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        llvm@...ts.linux.dev, linux-kernel@...r.kernel.org,
        kasan-dev@...glegroups.com
Subject: Re: objtool "no non-local symbols" error with tip of tree LLVM

On Wed, May 18, 2022 at 07:25:13PM +0200, Peter Zijlstra wrote:
> So while writing the global symbol can always use the new data section,
> writing the new symbol can need arbitrary iteration of the data blocks.
> 
> Something somewhat similar is when there's no global symbols, then the
> new symbol needs to go in the new data block instead of the old.
> 
> So it all became a tangled mess and I ended up with the one generic
> function that could do it all (which is both simpler and less code than
> trying to deal with all the weird cases).

Makes sense, and matches my post-bike-ride insights.  Thanks :-)

-- 
Josh