linux-kernel - [PATCH 0/2] objtool: Avoid pointless modifications

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Message-ID: <20211007212211.366874577@infradead.org>
Date:   Thu, 07 Oct 2021 23:22:11 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     jpoimboe@...hat.com
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org, mbenes@...e.cz
Subject: [PATCH 0/2] objtool: Avoid pointless modifications

While chasing that libelf warning, I started wondering why we're re-writing the
elf file to begin with, the second/noinstr pass shouldn't modify the image, so
we shouldn't end up in elf_write() in the first place.

These here two patches seem to cure this and should thereby also improve
performance somewhat.