From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BCEEC43603 for ; Thu, 5 Dec 2019 00:10:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E98B21823 for ; Thu, 5 Dec 2019 00:10:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="GC95mQV5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728556AbfLEAKN (ORCPT ); Wed, 4 Dec 2019 19:10:13 -0500 Received: from mail-pg1-f195.google.com ([209.85.215.195]:41074 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728522AbfLEAKM (ORCPT ); Wed, 4 Dec 2019 19:10:12 -0500 Received: by mail-pg1-f195.google.com with SMTP id x8so663347pgk.8 for ; Wed, 04 Dec 2019 16:10:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=D3o0S53BeNnZfZd99UaFa744uBy1bdSUJelyk4yNxHs=; b=GC95mQV5lCJoxcnVgn7296LK/LZBl3LEgiS0w9Qsv+v/6fbsEouw6kOnJdXsFNqaIi ffnEamkViwozMeBKfXxdLm0oEVeqCoZhAOCOuTTXnq8ARzgED4nTN2Lg02dSegV3KT2s 0M9m5OFAtgEpGoe6zM5fLdwUOKXdYd2RGeaW0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=D3o0S53BeNnZfZd99UaFa744uBy1bdSUJelyk4yNxHs=; b=WFeuCLVPlx6gd+bell7Q4MYnNwM5gN9J0w1mf72FCPP+XZYpK4zl34h8AJ3UlWXBXE Vm9a7w1uUaYV1PoRjYXNzeMl+bTsyyxPIyHDXUTAcBDXVkZfNxRTsgGi/Azzanb1EkDh ianqDIfnTNa2laHdD6Z/wTliCTuS56EWcaX9kpfjRoAS/5+maaDwuiVOkdgdtV1Qjojq M01uKeuXhw6OTQNsMKFe1r6nu+PMAhsuOvy0WmbBt3B7Y7M/is77WlqLqfu1tnN4HCVl sKOEuLjUl4z5XbU048xdJPq/Fi9YFRO07iTO4x/zu8L+5+YZT0Q8GjIOZYmmB60b4JKi DfvQ== X-Gm-Message-State: APjAAAXvUXOhtRjXr+ReR2WwgIYB+J3RGsV8qcttaKxoX2mNo8NvUrSE /oF2GLAwKg9yKh/pma2OoCjm9w== X-Google-Smtp-Source: APXvYqxZa14mrTVNWUdtWyPFCBpCEtH1XqTiMCdfNPGTL0gp3E35ktiDS7ypx6yJ/1yVmjm1S0Bzdw== X-Received: by 2002:a62:6381:: with SMTP id x123mr6145520pfb.75.1575504612382; Wed, 04 Dec 2019 16:10:12 -0800 (PST) Received: from thgarnie.kir.corp.google.com ([2620:0:1008:1100:d6ba:ac27:4f7b:28d7]) by smtp.gmail.com with ESMTPSA id 73sm8422303pgc.13.2019.12.04.16.10.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Dec 2019 16:10:12 -0800 (PST) From: Thomas Garnier To: kernel-hardening@lists.openwall.com Cc: kristen@linux.intel.com, keescook@chromium.org, Thomas Garnier , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , x86@kernel.org, Peter Zijlstra , Masami Hiramatsu , Will Deacon , linux-kernel@vger.kernel.org Subject: [PATCH v10 02/11] x86: Add macro to get symbol address for PIE support Date: Wed, 4 Dec 2019 16:09:39 -0800 Message-Id: <20191205000957.112719-3-thgarnie@chromium.org> X-Mailer: git-send-email 2.24.0.393.g34dc348eaf-goog In-Reply-To: <20191205000957.112719-1-thgarnie@chromium.org> References: <20191205000957.112719-1-thgarnie@chromium.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a new _ASM_MOVABS macro to fetch a symbol address. Replace "_ASM_MOV $, %dst" code construct that are not compatible with PIE. Signed-off-by: Thomas Garnier --- arch/x86/include/asm/asm.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h index cd339b88d5d4..644bdbf149ee 100644 --- a/arch/x86/include/asm/asm.h +++ b/arch/x86/include/asm/asm.h @@ -32,6 +32,7 @@ #define _ASM_ALIGN __ASM_SEL(.balign 4, .balign 8) #define _ASM_MOV __ASM_SIZE(mov) +#define _ASM_MOVABS __ASM_SEL(movl, movabsq) #define _ASM_INC __ASM_SIZE(inc) #define _ASM_DEC __ASM_SIZE(dec) #define _ASM_ADD __ASM_SIZE(add) -- 2.24.0.393.g34dc348eaf-goog