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From: Peter Zijlstra <peterz@infradead.org>
To: jpoimboe@redhat.com
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org, mbenes@suse.cz
Subject: [PATCH 0/2] objtool: Avoid pointless modifications
Date: Thu, 07 Oct 2021 23:22:11 +0200	[thread overview]
Message-ID: <20211007212211.366874577@infradead.org> (raw)

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.


             reply	other threads:[~2021-10-07 21:27 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-07 21:22 Peter Zijlstra [this message]
2021-10-07 21:22 ` [PATCH 1/2] objtool: Optimize re-writing jump_label Peter Zijlstra
2021-10-08  6:55   ` Josh Poimboeuf
2021-10-08 10:03     ` Peter Zijlstra
2021-10-08 16:28       ` Josh Poimboeuf
2021-10-07 21:22 ` [PATCH 2/2] objtool: Optimize/fix retpoline alternative generation Peter Zijlstra
2021-10-08  7:23   ` Josh Poimboeuf
2021-10-08 10:35     ` Peter Zijlstra
2021-10-08 16:39       ` Josh Poimboeuf
2021-10-09 10:42         ` Peter Zijlstra

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