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 1CE32C04AAC for ; Mon, 20 May 2019 23:20:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E3261217F5 for ; Mon, 20 May 2019 23:20:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="JrVW7C+L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727416AbfETXUT (ORCPT ); Mon, 20 May 2019 19:20:19 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:38067 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727368AbfETXUM (ORCPT ); Mon, 20 May 2019 19:20:12 -0400 Received: by mail-pg1-f193.google.com with SMTP id j26so7517564pgl.5 for ; Mon, 20 May 2019 16:20:12 -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=W7734R4i6yiyrpZ2h/0MZYkaSGjqvy874mw6G7v61To=; b=JrVW7C+LuAQDFNUSIHyGFsz0qBRTL2ZXfCcQco+/ovqwakUWfE/dZjhQKvz317S01W wQCGYHVGlpLmUrYgoTdSKOC2hUfqswQYjSLwQhd86heBQlNgOK5fzGaizR8ag3rfBwUw lcSrm1YKnCFi+86LywiA0MP5pGK/4PWx3RWMI= 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=W7734R4i6yiyrpZ2h/0MZYkaSGjqvy874mw6G7v61To=; b=DwKNl7Mh0DRv7Sgxx1n7r9TmC+sbEobC8y5lT+CRqcbAbb99mXbSF9D8sO9d7IfAQO oYptLGfVgPo6gCWnZ9waMd2MBJ8atx4X0E3ggHX4NRAfV9bQKEslwRmN2ONUBG7decyq 6TmX0/R7q2WpQlkod71vPvH6RPWN5tVm4FOM0l5OOekjYbO/7sciw5KCTuJc7w4bBOt6 yCZkE9atKPUJH0tiED6SGfLoxnlzlK/XOZBqPjG443Phh9t3U6K9vv591qgKUlW5xwSB FGrT2kRkgE3RX3195RcppRPXblALnCEFbRLzAKi5+2LfO+zmfq/iLnbqZJSU/qag8xIC lNqw== X-Gm-Message-State: APjAAAX9jvBOZ/fkadKNvdbavE5qZPAM4gHbe9o9ZcI5tdFK8KKpeNfp rGvqhCLsGnF3XUFt2UME1jhiHA== X-Google-Smtp-Source: APXvYqx11/wdMqn8zECWhWwJqm22F59FOLIqoVe2U28n9IpVe7w901Gx6+y2O7doblMLNbHs30IaWA== X-Received: by 2002:aa7:87d7:: with SMTP id i23mr82812885pfo.211.1558394412346; Mon, 20 May 2019 16:20:12 -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.55.2019.05.20.16.20.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 May 2019 16:20:11 -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, linux-kernel@vger.kernel.org Subject: [PATCH v7 06/12] x86: pm-trace - Adapt assembly for PIE support Date: Mon, 20 May 2019 16:19:31 -0700 Message-Id: <20190520231948.49693-7-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 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 below 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" \ -- 2.21.0.1020.gf2820cf01a-goog