From patchwork Fri Nov 4 18:39:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 9413119 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B5FAB60585 for ; Fri, 4 Nov 2016 18:40:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AB44A2ADB8 for ; Fri, 4 Nov 2016 18:40:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A00FE2B1C6; Fri, 4 Nov 2016 18:40:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 48FA92ADB8 for ; Fri, 4 Nov 2016 18:40:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965405AbcKDSjv convert rfc822-to-8bit (ORCPT ); Fri, 4 Nov 2016 14:39:51 -0400 Received: from Galois.linutronix.de ([146.0.238.70]:42137 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964815AbcKDSju (ORCPT ); Fri, 4 Nov 2016 14:39:50 -0400 Received: from localhost ([127.0.0.1] helo=bazinga.breakpoint.cc) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1c2jNH-0007L9-DR; Fri, 04 Nov 2016 19:37:59 +0100 From: Sebastian Andrzej Siewior To: linux-kernel@vger.kernel.org Cc: Michal Marek , linux-kbuild@vger.kernel.org, x86@kernel.org, Al Viro , Ben Hutchings , Sven Joachim , "Austin S. Hemmelgarn" , Borislav Petkov Subject: [PATCH 1/3] kbuild: add -fno-PIE Date: Fri, 4 Nov 2016 19:39:38 +0100 Message-Id: <20161104183940.30692-2-bigeasy@linutronix.de> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20161104183940.30692-1-bigeasy@linutronix.de> References: <20161104183940.30692-1-bigeasy@linutronix.de> MIME-Version: 1.0 Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Debian started to build the gcc with -fPIE by default so the kernel build ends before it starts properly with: |kernel/bounds.c:1:0: error: code model kernel does not support PIC mode Also add to KBUILD_AFLAGS due to: |gcc -Wp,-MD,arch/x86/entry/vdso/vdso32/.note.o.d … -mfentry -DCC_USING_FENTRY … vdso/vdso32/note.S |arch/x86/entry/vdso/vdso32/note.S:1:0: sorry, unimplemented: -mfentry isn’t supported for 32-bit in combination with -fpic Tagging it stable so it is possible to compile recent stable kernels as well. Cc: stable@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior --- Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Makefile b/Makefile index a2650f9c6a25..d61145ebf498 100644 --- a/Makefile +++ b/Makefile @@ -622,6 +622,8 @@ include arch/$(SRCARCH)/Makefile KBUILD_CFLAGS += $(call cc-option,-fno-delete-null-pointer-checks,) KBUILD_CFLAGS += $(call cc-disable-warning,maybe-uninitialized,) KBUILD_CFLAGS += $(call cc-disable-warning,frame-address,) +KBUILD_CFLAGS += $(call cc-option,-fno-PIE) +KBUILD_AFLAGS += $(call cc-option,-fno-PIE) ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,)