Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp3741305pxb; Tue, 26 Jan 2021 03:38:05 -0800 (PST) X-Google-Smtp-Source: ABdhPJx+WJ+fvgzaTli8O033q9xtsyoOcTg6HuIWBWqnJCaEoUofX7dLzXTXFKgu4IFfnDLqu0Kr X-Received: by 2002:a17:907:d04:: with SMTP id gn4mr3314638ejc.126.1611661085670; Tue, 26 Jan 2021 03:38:05 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1611661085; cv=none; d=google.com; s=arc-20160816; b=CC1Xm4/ieaknGgXTbQ72pesXlUrvyP4JKaATnYjzx8EWIq4qbhVNvgpr/hVgW0VTR3 w2/TImvvV3bQ4l4X0mDmfJfUOPWxUQOh5mWEl1cnoyHwz8BhYRT1eQUIDChF7gnCCFFF lTv8YclHPv6LTMH9owf5p3aJUIW+xS6B+PHecRtcjaa0GhYsgUhm11qVr/teZPEldiI8 htmW4MPDvEC+tD0S3c0rRLWIFq5u0oZnhEfD8OAlkfheaAeYbPKq0GKwdKSbS6L4C2s/ u4K5JEibAp6yZocpUtN7P63DYxSMO3WwF8j7Go2Mf+JjYd2xIn4yXTcCBo5TKPyouZ9Y aaZw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=BROfFJpIRH8LJFhVQkvm8o4ilhu1UZ/b8i19pQZDBU8=; b=yyz3erSfvc7KtLdIUULausQnK5lTLnOY8oqI3B6IP1muAYhkn8cViTBN5ZOwcfDV1n L0LfNBF6do2DyQW5EvUNVFygWATfl3WLF3x0Xn0W2PApi5ySRcuX1qJOsBiL2MfAwwDk Jyx2zq63tDzzJISTaOjtIDzr6Qn9iNc83QEiUL2yqSTJJjqmj8g39NWZ0bIUAVeO/ZZE WVg/E8f9x70lj9c2UmUTXUTO+CiX+GuOn7Hv8fuxpHGgHsIwmgrl/0GUYnJ4IEYWMEHq z38AmRriLpM2Yp1n1Y/6I6PieDUGoIxGlHwCm8+mkBJczVReQ9Yq7M6UbiVp1ZhhePD9 3FkQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=qs6j8xg8; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id gx11si6958525ejb.357.2021.01.26.03.37.41; Tue, 26 Jan 2021 03:38:05 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=qs6j8xg8; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405250AbhAZLeg (ORCPT + 99 others); Tue, 26 Jan 2021 06:34:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:54994 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2403780AbhAZKNR (ORCPT ); Tue, 26 Jan 2021 05:13:17 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8220621744; Tue, 26 Jan 2021 10:12:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611655956; bh=BROfFJpIRH8LJFhVQkvm8o4ilhu1UZ/b8i19pQZDBU8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qs6j8xg8KD+LFQ4ba99/rlxMYwy852TGndWKrQeutD+cmQ7e4e9nbgDexbo7KcmjK XOSlgAZyPQFLDmNfCQ6gDrZSSI0t1CNkLbvQAhKq6fgxtdT5FRcK2ein2dDYSo/Ihy 1VRxAlxScThrtP8c2ii+mQVi8FONx2QuevopN46+AuPiNtg3V/yzO6u6UKV+TO5KpK r8yRcmyrP3i/Wo68zk9EStdkPV3HI0kEGSwRcMAVr6dPu0vMGkmXeKFeDAj258uhQQ kftvksihNAzk+y1sufWPmA0cm/B0fjh3d21mrUsK+UGzaEfWl9hKxjxr61W+rVEwQJ kRsytr8zP5RIg== Date: Tue, 26 Jan 2021 10:12:31 +0000 From: Will Deacon To: Robin Murphy Cc: "Leizhen (ThunderTown)" , Joerg Roedel , Jean-Philippe Brucker , Jonathan Cameron , linux-arm-kernel , iommu , linux-kernel , Yang Yingliang Subject: Re: [PATCH 1/1] iommu/arm-smmu-v3: add support for BBML Message-ID: <20210126101230.GA29204@willie-the-truck> References: <20201126034230.777-1-thunder.leizhen@huawei.com> <20210122125132.GB24102@willie-the-truck> <1bfd1ca0-953e-e943-f87e-144d5537bd0c@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1bfd1ca0-953e-e943-f87e-144d5537bd0c@arm.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 25, 2021 at 08:23:40PM +0000, Robin Murphy wrote: > Now we probably will need some degreee of BBML feature awareness for the > sake of SVA if and when we start using it for CPU pagetables, but I still > cannot see any need to consider it in io-pgtable. Agreed; I don't think this is something that io-pgtable should have to care about. Will