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=-11.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 A45BFC433B4 for ; Wed, 28 Apr 2021 20:31:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 758B8613F1 for ; Wed, 28 Apr 2021 20:31:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241965AbhD1UcS (ORCPT ); Wed, 28 Apr 2021 16:32:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240387AbhD1UcQ (ORCPT ); Wed, 28 Apr 2021 16:32:16 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56A59C06138A for ; Wed, 28 Apr 2021 13:31:30 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id o16so19912020plg.5 for ; Wed, 28 Apr 2021 13:31:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=X8hdJrj+BWcDqZ4bW4h2pNAqs92BmI2AsU4ld/EBkiw=; b=iI0jec9SDqWTC7iVkmmleZKmFxnoAhgXjmhD3GBMXI6hAcgWgxdE8rk8pw1d8gwKEe jiiEowLOMDPAOnn341yCsTffY8AeQm4SMl8U1OQbFW8sXyyX3ojyqLLXxDHGhi6FZYZi kwPvnwSRg8ZIzYwNIHaDMsdRmYUm/aznEAU5Y= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=X8hdJrj+BWcDqZ4bW4h2pNAqs92BmI2AsU4ld/EBkiw=; b=kp9cI6x5mWbJo3Vnw269ljzXWFfuMlwFMLYtsQ+ObnHkDq6XAaYECl+xu/52ZpsSRB sSFXcueZpFnhhMRWpIKaV9kx62tCeBYkF5qIlFPxonfABWyB1PvoKHM4xdSGXVU2Rq55 VBEIMEkHFTvd+sd5rfFexEKF6h2KFrpQUYUU/xEVS4EDwlDKE7R55CrODyDyDJkjzDU3 RcbRu6qBKn+au9LEpTnktfV7Hl0410Th1uSYXDjIDzokHdhtOTCLzOYvEkom7R/oHAaj etwwrzcyUY0r840D5QPl7GR/JPBHWcr43izFAF56p7b/cxXCLmb/cRYu3fwTKJF+kCLB xSyw== X-Gm-Message-State: AOAM532UJrGNpNw+vbeohjjmkUTOtvlpeOmzxk1ngl02Xz3k3vqG2KEJ BDTFHWckfpnwsoE7kWx1JcoX6Q== X-Google-Smtp-Source: ABdhPJzu07p9Ep6FFlV4ekxK1JTBTpTjmwV6obAgpk10d2D/VzX4t6Ftslv5gywEH3Rs23w7Ak1szA== X-Received: by 2002:a17:903:185:b029:ec:b44d:7c3e with SMTP id z5-20020a1709030185b02900ecb44d7c3emr31893977plg.44.1619641889956; Wed, 28 Apr 2021 13:31:29 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id b4sm448450pfv.188.2021.04.28.13.31.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Apr 2021 13:31:29 -0700 (PDT) Date: Wed, 28 Apr 2021 13:31:28 -0700 From: Kees Cook To: Yu-cheng Yu Cc: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , Weijiang Yang , Pengfei Xu , Haitao Huang Subject: Re: [PATCH v26 4/9] x86/cet/ibt: Update ELF header parsing for Indirect Branch Tracking Message-ID: <202104281331.1CCFEFCF1A@keescook> References: <20210427204720.25007-1-yu-cheng.yu@intel.com> <20210427204720.25007-5-yu-cheng.yu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210427204720.25007-5-yu-cheng.yu@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 27, 2021 at 01:47:15PM -0700, Yu-cheng Yu wrote: > An ELF file's .note.gnu.property indicates features the file supports. > The property is parsed at loading time and passed to arch_setup_elf_ > property(). Update it for Indirect Branch Tracking. > > Signed-off-by: Yu-cheng Yu Reviewed-by: Kees Cook -- Kees Cook