From patchwork Wed Jun 24 20:31:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 11624225 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6619214E3 for ; Wed, 24 Jun 2020 20:34:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4CC4E2080C for ; Wed, 24 Jun 2020 20:34:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="BZIaPVfK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406568AbgFXUeE (ORCPT ); Wed, 24 Jun 2020 16:34:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50638 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406566AbgFXUda (ORCPT ); Wed, 24 Jun 2020 16:33:30 -0400 Received: from mail-qk1-x74a.google.com (mail-qk1-x74a.google.com [IPv6:2607:f8b0:4864:20::74a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B91ABC061797 for ; Wed, 24 Jun 2020 13:33:29 -0700 (PDT) Received: by mail-qk1-x74a.google.com with SMTP id j79so2500466qke.5 for ; Wed, 24 Jun 2020 13:33:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=0gnBAHJLx9lqO/s+HwJkcFCIJr1VhaUKeKhoSxpNVYo=; b=BZIaPVfK4mM5FaEgiOXOWzMHkzLTbGkEfiJOtrAEFVfi2gebzUCHiY5apTLMtfHkTM l75+dKXwrfuQQVQD2stOWlndadQB1Zc6NUYn/q6QeMRTQnSqWTMGKUHewmR4G35OHvGp b5/SiArvL0S+A3ZHxVqs+VYlHjtrFUCuNx8i9CZCiQNeqcMm9dSVbAn39gIUe0DUghnD /f5TKe7Xx1FfkMjgZr3OsJkbEjKTvqcrDihZLf9/s8waWGOostMsdN7liEE23xBIKS3z 6Rz9E3efblWhUua9EUcgFt56u58fIXV0W2fm5zALG7kNoivW4ApgaZxGRBArCosaw+co NR1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=0gnBAHJLx9lqO/s+HwJkcFCIJr1VhaUKeKhoSxpNVYo=; b=YTJ4EF4nLRQvAATf44hbz+u0qlFPBlYDmcoNThadhxlb9+hSI6XdKR4rKX6NxxhguC 6jbttOs/41mg7v/0wnjYuEnzN10ZVRYerp8IYgr8zQbo75gOr9qLY92/VaIannG/jyzL vDVaa7l1Iii6TT2XU7ofemTwTEAloqWEkiTnODnHHiZJiwZDfX8RMpFvlnXY0WTyyi7x 7f+qFgtnLsAXxW1DqzAcIqiIlJx4ruzHmHhKuJZ4/o7PV+y2LqOBAmzoYcQQ6dPnVHir +EAg1HS6fT58zlhKC+NxiZ2MuXAOV3OlP7Llb5/PQPs++01MkomLDrdL4XsIRZrCVfWo 9uiw== X-Gm-Message-State: AOAM533NELftRrkonMorkrlfH25dORaeqIlK2+4bwpO6GJNgkzo/0d0u 9o6hZnfG5rBre5eGH015nVVMOTEYfYkqiWNyO6E= X-Google-Smtp-Source: ABdhPJxTPJmHGzX5Q2m0yR96w4zaIPYDqCpLQon4kItXV3AD16e4+1m+5QFH8jaic4yItHA3V16FC+0hhVHCKPD3doc= X-Received: by 2002:a0c:ec4b:: with SMTP id n11mr33232031qvq.103.1593030808901; Wed, 24 Jun 2020 13:33:28 -0700 (PDT) Date: Wed, 24 Jun 2020 13:31:55 -0700 In-Reply-To: <20200624203200.78870-1-samitolvanen@google.com> Message-Id: <20200624203200.78870-18-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> X-Mailer: git-send-email 2.27.0.212.ge8ba1cc988-goog Subject: [PATCH 17/22] arm64: vdso: disable LTO From: Sami Tolvanen To: Masahiro Yamada , Will Deacon Cc: Greg Kroah-Hartman , "Paul E. McKenney" , Kees Cook , Nick Desaulniers , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, Sami Tolvanen Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Filter out CC_FLAGS_LTO for the vDSO. Signed-off-by: Sami Tolvanen --- arch/arm64/kernel/vdso/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile index 556d424c6f52..cfad4c296ca1 100644 --- a/arch/arm64/kernel/vdso/Makefile +++ b/arch/arm64/kernel/vdso/Makefile @@ -29,8 +29,8 @@ ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \ ccflags-y := -fno-common -fno-builtin -fno-stack-protector -ffixed-x18 ccflags-y += -DDISABLE_BRANCH_PROFILING -CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) -KBUILD_CFLAGS += $(DISABLE_LTO) +CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) \ + $(CC_FLAGS_LTO) KASAN_SANITIZE := n UBSAN_SANITIZE := n OBJECT_FILES_NON_STANDARD := y