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 5EF34C0650F for ; Tue, 30 Jul 2019 19:14:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3513D20693 for ; Tue, 30 Jul 2019 19:14:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="WTaj/tCW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388352AbfG3TN7 (ORCPT ); Tue, 30 Jul 2019 15:13:59 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:41693 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388005AbfG3TNS (ORCPT ); Tue, 30 Jul 2019 15:13:18 -0400 Received: by mail-pg1-f194.google.com with SMTP id x15so20205374pgg.8 for ; Tue, 30 Jul 2019 12:13:17 -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=okwXTawHyuFa4icd55twJCHtmhUjDA75Nfe9+fhiSRI=; b=WTaj/tCWBI6QVlq4nKTsAxYz1lBPqS7a9eK0QDXPMmbAPy3XkclyuEpGhNiM9+Qc+a GfZPY1tJuv8B58Sdyy1D7YxyiHEVqzCtOyRukRfXTl4S9nHMyfrDJWQu9PKz6P5BMI8I gB3+kX3pX//wpXa3Ez7mNRLg83QLHpddaT690= 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=okwXTawHyuFa4icd55twJCHtmhUjDA75Nfe9+fhiSRI=; b=RBflFaP8caW0uXMy6dL13sShTlWWMi3QLNHQWs6Iur2xmHyoJzGUOPlL1jLRIwNZFB Pspef2eS2FEnPF/y1iAp4k4pOdQTU6qR0jUsiOvlo3WTlLHDmeuiRotcI4gQLTmjt3T6 +XNesofyaxZvvdaUS2v55BiGnHhG+Ssl3wYmVYkJXQrSACKqIo4hg6wXemaa9V/AtnJI fMwgUSlUGXb+c8nDcGrm4hxHgb+SxQMZdtEAZldMHrCoJuviHsek/nS/8D9u3KNBRn7a 6KIPkpiJR03oyV+k7SFJPGLur5plO+SfQg6/43zMuQxYiAprqcMO4ET3q0sYPqsLaeRz dU/g== X-Gm-Message-State: APjAAAViDEcNYl+SOUUMkzgF+4CFA3lzKnhbHqELkt2f3ICHDOv6OKqq qq2Ci563HUSjWlZK7p38yN7OOA== X-Google-Smtp-Source: APXvYqyboxn+AlEAdie6u7CC57V8sWfALD8FpbLQHIYoEr0y0DEAHDVqK2YOnXcRGhf2UDGdqqHftQ== X-Received: by 2002:a63:184b:: with SMTP id 11mr49666372pgy.112.1564513997493; Tue, 30 Jul 2019 12:13:17 -0700 (PDT) Received: from skynet.sea.corp.google.com ([2620:0:1008:1100:c4b5:ec23:d87b:d6d3]) by smtp.gmail.com with ESMTPSA id n89sm84649540pjc.0.2019.07.30.12.13.16 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Tue, 30 Jul 2019 12:13:17 -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 v9 05/11] x86: pm-trace - Adapt assembly for PIE support Date: Tue, 30 Jul 2019 12:12:49 -0700 Message-Id: <20190730191303.206365-6-thgarnie@chromium.org> X-Mailer: git-send-email 2.22.0.770.g0f2c4a37fd-goog In-Reply-To: <20190730191303.206365-1-thgarnie@chromium.org> References: <20190730191303.206365-1-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" \ -- 2.22.0.770.g0f2c4a37fd-goog