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=-9.9 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 B6B0BC606C6 for ; Mon, 8 Jul 2019 17:49:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 909B12189F for ; Mon, 8 Jul 2019 17:49:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="kX90Ll+0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389911AbfGHRtb (ORCPT ); Mon, 8 Jul 2019 13:49:31 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:42283 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387859AbfGHRt2 (ORCPT ); Mon, 8 Jul 2019 13:49:28 -0400 Received: by mail-pf1-f193.google.com with SMTP id q10so7947653pff.9 for ; Mon, 08 Jul 2019 10:49:28 -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=0L49s/tWIr71dLFXxs4rfeHHocb58NImeCdr+Rzo5s4=; b=kX90Ll+0cRk6+cX3z7g100Lvynrw4C5hMo5BnzRzRtlwGM1SCgzPgr8cWLjxOwF/BH B3ujW2/jzYFPNZVRkZ9z+ArIVfQTIDSQ5sOGukWTuGC+K8GbG9wRsTQHtuuUpJTWWNBc l/tmk51wikJRccwc1UT3lvcAgVY397QRbxcpk= 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=0L49s/tWIr71dLFXxs4rfeHHocb58NImeCdr+Rzo5s4=; b=Nd8HNrVLFS0CxmM1NaFUNS5GiJqcEJYXALrQ53/GjuUy+cS1y2NmYYI+XSHDLQCD51 iwsp9MgKq6u7PAvo5PL+OUVgXFqPDdybxqY45Xsu2sVElyKbLmtzFguok9KT9Km4pkHR 7i7tCtYeSRPzqOojFvVX8a1y9FZsNAXXETp6LMzzz8K+TqDQpWfU4uRNg3tloUPkREg1 Z91sf/THkf3eyJZfQVF5m73pqnExS0oV17ym3lTZvKD+FUaqCouBHqJ1CaHL5WxKbOlB j+Cv5cXevzFZT4Ltkls/6lBvd3haxZchh1OsKF5mrkx9vqUNNRcYSWLppx1wVh71Zgrc gyMQ== X-Gm-Message-State: APjAAAW4D9QiyVmr7M9D/YJX0yeLiCla7C0XHH10oam92oMUygCgiVvo pTLC0qJBKXPS+Eh2yDxIeRWBnA== X-Google-Smtp-Source: APXvYqz/KlBgj7sxPbh2laDw0LEqUS36n2xByyCuU9PYhQLrDTew/w1U79e8dcnArD+lta4tuhReaA== X-Received: by 2002:a17:90a:2430:: with SMTP id h45mr28211684pje.14.1562608168271; Mon, 08 Jul 2019 10:49:28 -0700 (PDT) Received: from skynet.sea.corp.google.com ([2620:0:1008:1100:c4b5:ec23:d87b:d6d3]) by smtp.gmail.com with ESMTPSA id j1sm20151686pfe.101.2019.07.08.10.49.27 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 08 Jul 2019 10:49:27 -0700 (PDT) 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 , Jann Horn , Nadav Amit , linux-kernel@vger.kernel.org Subject: [PATCH v8 02/11] x86: Add macro to get symbol address for PIE support Date: Mon, 8 Jul 2019 10:48:55 -0700 Message-Id: <20190708174913.123308-3-thgarnie@chromium.org> X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog In-Reply-To: <20190708174913.123308-1-thgarnie@chromium.org> References: <20190708174913.123308-1-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. 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) -- 2.22.0.410.gd8fdbe21b5-goog