From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755371Ab1GJDXy (ORCPT ); Sat, 9 Jul 2011 23:23:54 -0400 Received: from DMZ-MAILSEC-SCANNER-7.MIT.EDU ([18.7.68.36]:50353 "EHLO dmz-mailsec-scanner-7.mit.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755330Ab1GJDW0 (ORCPT ); Sat, 9 Jul 2011 23:22:26 -0400 X-AuditID: 12074424-b7bc6ae000005a77-b9-4e191af21a83 From: Andy Lutomirski To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Ingo Molnar , John Stultz , Borislav Petkov , Andy Lutomirski Subject: [PATCH v2 4/8] x86-64: Add --no-undefined to vDSO build Date: Sat, 9 Jul 2011 23:22:11 -0400 Message-Id: <53c5eba0bbfa12935d2381e77ea1b495b709e0e2.1310267866.git.luto@mit.edu> X-Mailer: git-send-email 1.7.6 In-Reply-To: References: In-Reply-To: References: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrFIsWRmVeSWpSXmKPExsUixCmqrftJStLP4MReXou+K0fZLS42bmOx aF07n93i8q45bBZbLjWzWvzY8JjVgc2j+9EnRo9bbX+YPXbOusvusWlVJ5vHuWt9zB6fN8kF sEVx2aSk5mSWpRbp2yVwZcx40sBe8JC14s4iqwbGhyxdjJwcEgImEhv+T2KCsMUkLtxbz9bF yMUhJLCPUeJPzwtGCGc9o8T39d+hMk+ZJHa96mMFaWETUJHoWPoAqJ2DQ0RASGLp3TqQGmaB TYwSvzZNZASpERZwkFg1+RMbiM0ioCqx99pZNpB6XoEgiUuntSE2y0kcufwc7ApOAQOJ5Xdn g5ULCehLdH7az45LfAKjwAJGhlWMsim5Vbq5iZk5xanJusXJiXl5qUW65nq5mSV6qSmlmxhB wcruorKDsfmQ0iFGAQ5GJR7en8USfkKsiWXFlbmHGCU5mJREeXmBoS7El5SfUpmRWJwRX1Sa k1p8iFGCg1lJhLdmE1A5b0piZVVqUT5MSpqDRUmct9T7v6+QQHpiSWp2ampBahFMVoaDQ0mC NxBkqGBRanpqRVpmTglCmomDE2Q4D9BwTpAa3uKCxNzizHSI/CtGcaAzhXm5QFI8wASCJCMB dK0I7/TnIBcVlyQipKQaGBmXzpo/6ZPngg9rPvmn1x69k7h5fuxixyMZG5bs0w/bsPRhtPHq 3WevKkjqn47eL174qDn/gNj1Bf5FeuXfw79t7Tm287ywVi2/iKa5yL6j/LN92ln+qKh+n3Lr 6U37YGOP5In3/1y92r9jcZRb/xKFW8r3vzqZqudfsVjWOl+m+evkgh8PFngpsRRnJBpqMRcV JwIAAWDped0CAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This gives much nicer diagnostics when something goes wrong. It's supported at least as far back as binutils 2.15. Signed-off-by: Andy Lutomirski --- arch/x86/vdso/Makefile | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile index bef0bc9..5d17950 100644 --- a/arch/x86/vdso/Makefile +++ b/arch/x86/vdso/Makefile @@ -26,6 +26,7 @@ targets += vdso.so vdso.so.dbg vdso.lds $(vobjs-y) export CPPFLAGS_vdso.lds += -P -C VDSO_LDFLAGS_vdso.lds = -m64 -Wl,-soname=linux-vdso.so.1 \ + -Wl,--no-undefined \ -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096 $(obj)/vdso.o: $(src)/vdso.S $(obj)/vdso.so -- 1.7.6