From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F0CE12F4A16; Fri, 1 May 2026 04:08:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777608532; cv=none; b=jLlH4fqKxZpoJQWJ9ojoDlgJvogVhMpV4oJkLMlXIfXPYQvvHV7QEXVQNty3o7qRNEigOQduhF8aZGITV11plhKK5rnWKKxCS9i8PHJVxuC4WG3Tdo9lGqhstbF0W4JZ7LvAGY1a8/w8sn0JDaNO/k9Texfps6M1/JfUfu7251o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777608532; c=relaxed/simple; bh=+NM3TboCjx9zMokNZj1lQYyUCDXizYcds2lJrXgjfgQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mwPeaH0YCiW02dCWEtHo6H2/IYuM6byH/+8cGTu2jMFteBy2bX+hKhlnBiqyi6NnoiReogHFkVhu6PaD1NuNKtk/htR5TMy/LG+qqny3RtctKC9T1/veWuGs6P+6Jv7wZTAm8xrTiKMUtdV9YBkyT6Rwrb8ljAkH8o+TPjt0IFg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FgnM87Yl; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FgnM87Yl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 65E8EC2BCB7; Fri, 1 May 2026 04:08:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777608531; bh=+NM3TboCjx9zMokNZj1lQYyUCDXizYcds2lJrXgjfgQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FgnM87YlXl6u+uSiby63QlCT85KpQZPEkzYWC/p0Fi7GP8mSB2kkoGY5SHfXbAV6T lZCwjYmNG8zHqVP8p+RfiN7sAMiITbRFFGp8b6j35LTW33T+S82ZgRMO6c/PhY0oK2 jLxZbLNgebcNe44h1bp2LcdN0048DB7JM3lN4r4TUIfFkpwjz+t83/Fg3rfhbUofmy 8n49ss2pWAxUW0Zekt0U8F4xSG5I78hYD9vvIUu0YM/GcunyHlz0v44WEbifppCOaH sQQZhcHYQa09IjtPXtZlTdL3w1WMuqRfMfqO5KSt7jjVu+zlTSHklLmNkc1shvMclO Jn/6HTPRKYRuQ== From: Josh Poimboeuf To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, live-patching@vger.kernel.org, Peter Zijlstra , Joe Lawrence , Song Liu , Miroslav Benes , Petr Mladek Subject: [PATCH v2 03/53] objtool/klp: Don't correlate __ADDRESSABLE() symbols Date: Thu, 30 Apr 2026 21:07:51 -0700 Message-ID: <8e69c287bd6c33cec1535228e2239b33f4602bc6.1777575752.git.jpoimboe@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: live-patching@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Symbols created by __ADDRESSABLE() are only used to convince the toolchain not to optimize out the referenced symbol. Reviewed-by: Miroslav Benes Signed-off-by: Josh Poimboeuf --- tools/objtool/klp-diff.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/tools/objtool/klp-diff.c b/tools/objtool/klp-diff.c index cb26c1c92a74..36753eeba58c 100644 --- a/tools/objtool/klp-diff.c +++ b/tools/objtool/klp-diff.c @@ -352,6 +352,15 @@ static bool is_special_section_aux(struct section *sec) return false; } +/* + * Symbols created by ___ADDRESSABLE() are only used to convince the toolchain + * not to optimize out the referenced symbol. + */ +static bool is_addressable_sym(struct symbol *sym) +{ + return !strcmp(sym->sec->name, ".discard.addressable"); +} + /* * These symbols should never be correlated, so their local patched versions * are used instead of linking to the originals. @@ -365,6 +374,7 @@ static bool dont_correlate(struct symbol *sym) is_uncorrelated_static_local(sym) || is_clang_tmp_label(sym) || is_string_sec(sym->sec) || + is_addressable_sym(sym) || is_special_section(sym->sec) || is_special_section_aux(sym->sec) || strstarts(sym->name, "__initcall__"); -- 2.53.0