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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no 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 23433C4BA21 for ; Wed, 26 Feb 2020 21:45:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EB7A221D7E for ; Wed, 26 Feb 2020 21:45:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="S7Qwoill" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727733AbgBZVpF (ORCPT ); Wed, 26 Feb 2020 16:45:05 -0500 Received: from mail-pg1-f193.google.com ([209.85.215.193]:46048 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727689AbgBZVpD (ORCPT ); Wed, 26 Feb 2020 16:45:03 -0500 Received: by mail-pg1-f193.google.com with SMTP id r77so288897pgr.12 for ; Wed, 26 Feb 2020 13:45:01 -0800 (PST) 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=LEOG45oBzsk4VkXLaube4iedb24/mnkHl/uPB4eNLko=; b=S7QwoillPymvmUXhSvQ9XeY6dt1lsnuG9Gixb/80AnLRzal3BKqeXehLhN8GeIopi7 mHIWOeTf7r00dNMZbOY0wy/VeWQM2D1PWjaWm6VqnRhDTJ5RtWMC6V4WiBuONgAurgwS e6aKokF7WWW6DX6t/rtidzSu6L5+xiuBi/ihA= 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=LEOG45oBzsk4VkXLaube4iedb24/mnkHl/uPB4eNLko=; b=aEZcMezrQMHneJAAvXfY8rrinS/z/YJPICtfWaEhmEV8/NXWa4uO8gtMTmK5ctFTqV aHb7C1aRqH3S2iaa/2MCoCSBy3tucwBHuXmqIu1f387VzdafvkyDyLaHrZRcyp/TNYEK alN2noY0mpyJ6P1RaRxqXwHRPtO6R1WyociuhL2GtEdnHnkUll9nK38Z49BYKWsmPCo6 TYTj/2GHINGGMmZBoaMRwiC5a4Q4Obxohz1qImTX68XKvDRg2ijzUCPpVcMvIZskxps5 jb/AojExNfvfT460+A+knJUTgJCU09rVMRvHxfO+WGoYLVkb1Tr63MZqO97+Bf7oFk2j +1JQ== X-Gm-Message-State: APjAAAUcGd7FU3rrQHTdH+8W6miqH4Mok4Bq6/XER7qk9WH5aGgVsnV7 N7PNvTr2w1mJR4zUYez04j1iow== X-Google-Smtp-Source: APXvYqzAYJxED0DZuNTQH/pPVYk94YN0FwPubJNZYwjzdTSrs2Ri1O5oY0aDkBqS9krAjOJx6fGojA== X-Received: by 2002:a63:3004:: with SMTP id w4mr854365pgw.164.1582753500965; Wed, 26 Feb 2020 13:45:00 -0800 (PST) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id z16sm4066910pff.125.2020.02.26.13.44.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Feb 2020 13:45:00 -0800 (PST) Date: Wed, 26 Feb 2020 13:44:59 -0800 From: Kees Cook To: Mark Brown Cc: Catalin Marinas , Will Deacon , Alexander Viro , Paul Elliott , Peter Zijlstra , Yu-cheng Yu , Amit Kachhap , Vincenzo Frascino , Marc Zyngier , Eugene Syromiatnikov , Szabolcs Nagy , "H . J . Lu " , Andrew Jones , Arnd Bergmann , Jann Horn , Richard Henderson , Kristina =?utf-8?Q?Mart=C5=A1enko?= , Thomas Gleixner , Florian Weimer , Sudakshina Das , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v7 00/11] arm64: Branch Target Identification support Message-ID: <202002261343.3B2ECE90@keescook> References: <20200226155714.43937-1-broonie@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200226155714.43937-1-broonie@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 26, 2020 at 03:57:03PM +0000, Mark Brown wrote: > This patch series implements support for ARMv8.5-A Branch Target > Identification (BTI), which is a control flow integrity protection > feature introduced as part of the ARMv8.5-A extensions. > > Changes: > > v7: > - Rebase onto v5.6-rc3. > - Move comment about keeping NT_GNU_PROPERTY_TYPE_0 internal into first > patch. > - Add an explicit check for system_supports_bti() when parsing BTI ELF > property for improved robustness. Looks good. I sent a few more Reviewed-bys where I could. Who is expected to pick this up? Catalin? Will? I'm excited to have both the ELF parser and BTI landed. :) -Kees -- Kees Cook