linux-kernel - [PATCH 0/2] objtool: Add option to fail build on vmlinux warnings

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Message-ID: <20241213-objtool-strict-v1-0-fd388f9d971f@google.com>
Date: Fri, 13 Dec 2024 11:31:29 +0000
From: Brendan Jackman <jackmanb@...gle.com>
To: Josh Poimboeuf <jpoimboe@...nel.org>, Peter Zijlstra <peterz@...radead.org>, 
	Andrew Morton <akpm@...ux-foundation.org>, Masahiro Yamada <masahiroy@...nel.org>, 
	Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas@...sle.eu>
Cc: linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org, 
	Brendan Jackman <jackmanb@...gle.com>
Subject: [PATCH 0/2] objtool: Add option to fail build on vmlinux warnings

This adds an option to objtool to exit with an error when it enounters
warnings.

Then, it adds a config to enable that flag on vmlinux. This enables you
to fail the build e.g. when noinstr is violated.

Signed-off-by: Brendan Jackman <jackmanb@...gle.com>
---
Brendan Jackman (2):
      objtool: Add --fail-on-warn
      kbuild: Add option to fail build on vmlinux objtool issues

 lib/Kconfig.debug                       | 11 +++++++++++
 scripts/Makefile.vmlinux_o              |  1 +
 tools/objtool/builtin-check.c           |  6 ++++++
 tools/objtool/check.c                   |  7 ++-----
 tools/objtool/include/objtool/builtin.h |  1 +
 5 files changed, 21 insertions(+), 5 deletions(-)
---
base-commit: f932fb9b40749d1c9a539d89bb3e288c077aafe5
change-id: 20241213-objtool-strict-cb9a0a75139e

Best regards,
-- 
Brendan Jackman <jackmanb@...gle.com>