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=-9.1 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,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 078ECC04E87 for ; Mon, 20 May 2019 23:20:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CDB2B2173C for ; Mon, 20 May 2019 23:20:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="UjHBMQNV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727336AbfETXUK (ORCPT ); Mon, 20 May 2019 19:20:10 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:33325 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727307AbfETXUH (ORCPT ); Mon, 20 May 2019 19:20:07 -0400 Received: by mail-pg1-f194.google.com with SMTP id h17so7526016pgv.0 for ; Mon, 20 May 2019 16:20:07 -0700 (PDT) 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=u/wnY+KqFixg56gyP1D7CB7HYKg32m+bqFWSsKBa+/I=; b=UjHBMQNV86pahygu8pDM7RodmVPNoOF5hJ3fT3xbyH0dL1de2+tRNhk/hUmxNtJl1q +WhScnJIT/kY02tSuiJfwqhs0EkygcgfQQ2Hl2HZpixKp6zgVRzVT74gxZBzXqobqJWx rLMNTGXxUbQq9oPM7H/xYWCXBM//FHTX0NQ7g= 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=u/wnY+KqFixg56gyP1D7CB7HYKg32m+bqFWSsKBa+/I=; b=Jzac/yHbI+ePn6Svgv/L/bIUgGit0+AEVWJmVDU+U/qWE41T0PizKx6iu1JdOTN1qi lJXOs2JzSApTc3bKwvW7UhLo20GSsMjvIIoWV3Q0+KCux7BiLjvH96nK3AnpcDCM+AIJ T84S+T9rIQ03+UjukIIC3fCC3IVJdJwIIkBlOTdwxALdSm+erjIQo7rgFXbhBeNKla+7 zqkx6RUAjvYlWAMs8O5LurMeoIzpTaX8WtINZR7EqYQfhEUM7b8Eeno9unF+/tAZqQOP gz4H/ZfYmMkZB07knKgVvNSfRFYOvHisKLW7hI/zn5Vgvx5Fxi9thF/1ErXcjMQ+iL2F EnEQ== X-Gm-Message-State: APjAAAXryFyNXBzbdm9/nhTQ4ERWtlIenGcTNUZv/TmT9zB6gXQdk0lL FHCA5XpMDTDNqa6LkQeYYXat9A== X-Google-Smtp-Source: APXvYqzV7SBvojMe///9CX7UEbIEQn/fen5oCvVGd76rfHpQHJwNd6ySlPIAhPdQ4X7SwFRT1BafWw== X-Received: by 2002:a62:2f87:: with SMTP id v129mr9812794pfv.9.1558394407163; Mon, 20 May 2019 16:20:07 -0700 (PDT) Received: from skynet.sea.corp.google.com ([2620:0:1008:1100:c4b5:ec23:d87b:d6d3]) by smtp.gmail.com with ESMTPSA id h13sm19350861pgk.55.2019.05.20.16.20.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 May 2019 16:20:06 -0700 (PDT) From: Thomas Garnier To: kernel-hardening@lists.openwall.com Cc: kristen@linux.intel.com, Thomas Garnier , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , x86@kernel.org, Peter Zijlstra , Nadav Amit , Jann Horn , linux-kernel@vger.kernel.org Subject: [PATCH v7 03/12] x86: Add macro to get symbol address for PIE support Date: Mon, 20 May 2019 16:19:28 -0700 Message-Id: <20190520231948.49693-4-thgarnie@chromium.org> X-Mailer: git-send-email 2.21.0.1020.gf2820cf01a-goog In-Reply-To: <20190520231948.49693-1-thgarnie@chromium.org> References: <20190520231948.49693-1-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 From: Thomas Garnier Add a new _ASM_MOVABS macro to fetch a symbol address. It will be used to 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 3ff577c0b102..3a686057e882 100644 --- a/arch/x86/include/asm/asm.h +++ b/arch/x86/include/asm/asm.h @@ -30,6 +30,7 @@ #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) -- 2.21.0.1020.gf2820cf01a-goog