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,URIBL_BLOCKED, 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 8D6C2C606BD for ; Mon, 8 Jul 2019 17:49:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 66322218A4 for ; Mon, 8 Jul 2019 17:49:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="Eh1Z2cY2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390555AbfGHRti (ORCPT ); Mon, 8 Jul 2019 13:49:38 -0400 Received: from mail-pg1-f196.google.com ([209.85.215.196]:37151 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390218AbfGHRtd (ORCPT ); Mon, 8 Jul 2019 13:49:33 -0400 Received: by mail-pg1-f196.google.com with SMTP id g15so8061639pgi.4 for ; Mon, 08 Jul 2019 10:49:33 -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=3Eb3Hb6sMPNCVrucYh3+8MTfpr8uJqt0a1oSlG2FmzA=; b=Eh1Z2cY2TLITAWx2bANgQlukRumh7aQ8qMvjId2GjyNdQSlE4Akz5EQfSMUNs2dLbi rkR2NqSY4lMvwQf9S2DSQpCn+V6sCrXSfutHEtHfoKNwXdYMkVs+tvmlPiGyIMYHLTac U4GrH9ccvKqYgl5u99ugvBNsZsnU7+UIhA3VA= 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=3Eb3Hb6sMPNCVrucYh3+8MTfpr8uJqt0a1oSlG2FmzA=; b=qUHe4yrNJvVhbTxMeuUw3xonf4v86DzsuYlvSQvRRTkRxy/bFAIBrTCSOV0/X0EcGi Gsx97/3vQzxa8+ZN9oiNMAeiN6/CfEqrlXObyWs+tLbWIVA19LXFiOOSri3ktchOKRPq 2Fpk8ty4QHmRr81CWDB3kQ9KrHaKuQok4SeNzZW+53zMzqHPn6Le7hWpyskBMnuk/DeY xlURhfMQlFZGQBWybZ+OSyG69nUZvCwuharBACMYvD+2i0F1xG88+kIHiSY8yIW1EPHG 6BuP5IXIvKS+BM6Q4Rm1yC659FEPncbUGD719Vil9wesC5kn62eqGWaidH0tFDDpXTv7 h5Wg== X-Gm-Message-State: APjAAAVxI39Wtljo7iaheH0+V/yejXWbVzRjS2990HawpDB3CP2PEgnI UcbpWL216Zt4rXREKy6llt1Y5w== X-Google-Smtp-Source: APXvYqxUXc4eLmCK5ydeVvkEVQiap2JrFMI/RSqJ2b7/EDWXwmMFOd4atDt+r3lAjdEJ37qlAwbKDw== X-Received: by 2002:a17:90a:3463:: with SMTP id o90mr27861911pjb.15.1562608173232; Mon, 08 Jul 2019 10:49:33 -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.101.2019.07.08.10.49.32 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 08 Jul 2019 10:49:32 -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, linux-kernel@vger.kernel.org Subject: [PATCH v8 05/11] x86: pm-trace - Adapt assembly for PIE support Date: Mon, 8 Jul 2019 10:48:58 -0700 Message-Id: <20190708174913.123308-6-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 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 Reviewed-by: Kees Cook --- 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" \ -- 2.22.0.410.gd8fdbe21b5-goog