From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752099AbdK3Xji (ORCPT <rfc822;w@1wt.eu>);
        Thu, 30 Nov 2017 18:39:38 -0500
Received: from mail-it0-f68.google.com ([209.85.214.68]:40107 "EHLO
        mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1752051AbdK3XjV (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 30 Nov 2017 18:39:21 -0500
X-Google-Smtp-Source: AGs4zMY3ssS3mjK3kWSnR6pn9nVHhMMJ689XHQD4BzCdEt3EFNUzhkzbOFYdc/4Ab3qhRLwbs7OXmw==
From: Sami Tolvanen <samitolvanen@google.com>
To: Alex Matveev <alxmtvv@gmail.com>, Andi Kleen <ak@linux.intel.com>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Greg Hackmann <ghackmann@google.com>,
        Kees Cook <keescook@chromium.org>,
        linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org,
        linux-kernel@vger.kernel.org, Mark Rutland <mark.rutland@arm.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>,
        Michal Marek <michal.lkml@markovi.net>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Yury Norov <ynorov@caviumnetworks.com>,
        Matthias Kaehlcke <mka@chromium.org>,
        Nicholas Piggin <npiggin@gmail.com>
Cc: Sami Tolvanen <samitolvanen@google.com>
Subject: [PATCH v2 7/7] arm64: add a workaround for GNU gold with ARM64_MODULE_PLTS
Date: Thu, 30 Nov 2017 15:39:05 -0800
Message-Id: <20171130233905.130602-8-samitolvanen@google.com>
X-Mailer: git-send-email 2.15.0.531.g2ccb3012c9-goog
In-Reply-To: <20171130233905.130602-1-samitolvanen@google.com>
References: <20171129234442.655-1-samitolvanen@google.com>
 <20171130233905.130602-1-samitolvanen@google.com>
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

All current versions of GNU gold crash when linking kernel modules
with ARM64_MODULE_PLTS due to a known bug:

  https://sourceware.org/bugzilla/show_bug.cgi?id=14592

To work around the problem, this change removes NOLOAD from .plt
and .init.plt.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 arch/arm64/kernel/module.lds | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/module.lds b/arch/arm64/kernel/module.lds
index f7c9781a9d48..eacb5c67f61e 100644
--- a/arch/arm64/kernel/module.lds
+++ b/arch/arm64/kernel/module.lds
@@ -1,4 +1,4 @@
 SECTIONS {
-	.plt (NOLOAD) : { BYTE(0) }
-	.init.plt (NOLOAD) : { BYTE(0) }
+	.plt : { BYTE(0) }
+	.init.plt : { BYTE(0) }
 }
-- 
2.15.0.531.g2ccb3012c9-goog