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=-10.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_MED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 8A496C43144 for ; Mon, 25 Jun 2018 22:41:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 41EBB2620A for ; Mon, 25 Jun 2018 22:41:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="mwlBoU3L" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 41EBB2620A Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933962AbeFYWlV (ORCPT ); Mon, 25 Jun 2018 18:41:21 -0400 Received: from mail-qt0-f201.google.com ([209.85.216.201]:49609 "EHLO mail-qt0-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932200AbeFYWlR (ORCPT ); Mon, 25 Jun 2018 18:41:17 -0400 Received: by mail-qt0-f201.google.com with SMTP id c4-v6so14400754qtp.16 for ; Mon, 25 Jun 2018 15:41:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:date:in-reply-to:message-id:references:subject:from:to :cc; bh=v6b72n2f2EAxkRCYn4/780M6Y/KmmSRu7vq7OG4VW7I=; b=mwlBoU3LYQoY9/73Pz7zpswHUyS5t6Sh1bRUMlcepYrC3v/THRagCEucKD78arZqYq uFJJjFTNOM0GBVmAEx30oLeb8sV//xZA9agdkh0/dk6wnTp+Xj7o1oeCGA2HWuDP/DH7 tG+gQb2G/71sWz2i9Ta3m3HMPdlt+8asrhF9wyM1kr9rWvabcMaBtG8KAJbK2yGEe+3F 2qKL5nimS9eUnk3tnGQGwwxf6PqDVLQ9f4oP6wTxDb3wCkbgYE3N/s+6Vl/4lQPG7fFw fjqBHNrl2akOn9VKwkk4QiwhvW0ugoE9YNm7tT37Y7g2sQ5OykCa11KZe3tZW5dSp20h +yIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id :references:subject:from:to:cc; bh=v6b72n2f2EAxkRCYn4/780M6Y/KmmSRu7vq7OG4VW7I=; b=Zd2eMfWdMRrV4LdUUcK9pkGhBVYHktRJdNs50Awdwtohz9GOw5Sg/YMLniARJwoold E8vtvKTB4i3MqlythY+2Kl8iSScOOiNvBe1MPSemG3TjIJkkLstN3069cuEsxAh0TusL /kcJkRfuEaSs53LhUQQygaW/iGV9OqoWEwrzRozuQK/mbgm66jds87GuJtSJI6G59SMC BspwEK3xClM2+PtKRKl/7GHAlmeg7QuyTP+GAIqjimjsU0ld0uS6F+XC66P822z+Hn1Y +4a3AvL8L3Kkln9Ca1hzPWYZyVO9zViwkFPyCWrG6XoXKobFL6Cjv/MGuw5jNcO2iT6v gNuA== X-Gm-Message-State: APt69E16CstF7pAg1kVTj3xZa2dWITxyWz268m6CkTc4BHqP9MdR+ka5 3XmZGlcPhqc1mKmz573EXjhjPferS7vItQ== X-Google-Smtp-Source: AAOMgpfYYA5EAez9c/nNR8r7eO8Ap6JP/Uqeen0/fnjzKbo5jCkC6qLY9BrS1uKv0tnnQQiD6+OUQPzZI69hzQ== MIME-Version: 1.0 X-Received: by 2002:a0c:f94a:: with SMTP id i10-v6mr8204013qvo.4.1529966476283; Mon, 25 Jun 2018 15:41:16 -0700 (PDT) Date: Mon, 25 Jun 2018 15:38:55 -0700 In-Reply-To: <20180625224014.134829-1-thgarnie@google.com> Message-Id: <20180625224014.134829-8-thgarnie@google.com> References: <20180625224014.134829-1-thgarnie@google.com> X-Mailer: git-send-email 2.18.0.rc2.346.g013aa6912e-goog Subject: [PATCH v5 07/27] x86: pm-trace - Adapt assembly for PIE support From: Thomas Garnier To: kernel-hardening@lists.openwall.com Cc: Thomas Garnier , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, Kate Stewart , Philippe Ombredanne , Greg Kroah-Hartman , linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Change assembly to use the new _ASM_MOVABS macro instead of _ASM_MOV for the assembly to be PIE compatible. Position Independent Executable (PIE) support will allow to extend the KASLR randomization range 0xffffffff80000000. Signed-off-by: Thomas Garnier --- arch/x86/include/asm/pm-trace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/asm/pm-trace.h b/arch/x86/include/asm/pm-trace.h index bfa32aa428e5..972070806ce9 100644 --- a/arch/x86/include/asm/pm-trace.h +++ b/arch/x86/include/asm/pm-trace.h @@ -8,7 +8,7 @@ do { \ if (pm_trace_enabled) { \ const void *tracedata; \ - asm volatile(_ASM_MOV " $1f,%0\n" \ + asm volatile(_ASM_MOVABS " $1f,%0\n" \ ".section .tracedata,\"a\"\n" \ "1:\t.word %c1\n\t" \ _ASM_PTR " %c2\n" \ -- 2.18.0.rc2.346.g013aa6912e-goog