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=-4.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 CE775C43460 for ; Thu, 1 Apr 2021 08:58:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 95C54610D0 for ; Thu, 1 Apr 2021 08:58:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233504AbhDAI6D (ORCPT ); Thu, 1 Apr 2021 04:58:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233637AbhDAI5v (ORCPT ); Thu, 1 Apr 2021 04:57:51 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D475CC0613E6; Thu, 1 Apr 2021 01:57:50 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id gb6so829809pjb.0; Thu, 01 Apr 2021 01:57:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=oXtJ821yB9S8peS7jwk7jXIhvNxqy4kwSPnw73VGxuY=; b=aA5+PCF5ZjUkVztXBPOOYY2ElzvNGYpU+nmwQbZeikkytPRSBL3KM0UIJYvlGV43eZ jMCLFVWtv0tNz/qNiQPUDKTbOuAKOXQT4Go8yTJZx6BLJP5iiPI7E2pbfp6ObQK7cNGo NGpuNX7kaEnW/v3sJsAQnq1p21TchRmAm8ofsDXDzn786S0o+0sTpP7zb49tQ5mZ0BE6 WwyMNvXZVwqy6nMZ0SfONJmIxRNDW885ZzzFzjySanxNQrl3E1un6u8Zl9S8DZjXTpCm eCqk0n3W/gKZkEH/ySIRus1BQ6SeM9T/sv16mkNcKIok3heNI6DMJdfbjqaElZfyHiZs CyJA== 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:user-agent; bh=oXtJ821yB9S8peS7jwk7jXIhvNxqy4kwSPnw73VGxuY=; b=dlqkRZQK2cN5/c9kaCtn0lqBBZ0OApRDh7Aw4G22t7f5UgNyXADcjp00kYuUEBUK8T YOHOeuAz17J1YFCZpCPpsPP03UBWLAXa4/kzrYmdkxCP4thDhvP0KcEe/75YLH3wRXOp 2GZ5zvKzUPNqTD9Niova5AGd1lvN9pH/a0ZR3ukSC4NrR+JWjpJhAkziXKtuITl+ACbT 8uolstOWbkN6kNguIO3VuLRKKAmkga+gUgoPPKvQrT9A/sOklYj9VqpKWq/p8Iy2ZOaP WGUDBokk84Ppbn1aeERyeHxIExDYUp9FgRXKGxW1KLpNoGlleFFrV49guwxcNbfmrT5q WFJw== X-Gm-Message-State: AOAM530859A+OtlQFu8/IqX/tu4WVqh8viAN66WTqyojTVny47BHcTsa vSZ/Rmk8L/0ia5d2EkNHLRE= X-Google-Smtp-Source: ABdhPJzvGu1N/wS8TdEjPhRmZPGQtvMqhoK8l4yaacUdBjiNF8CVAyTyrCf93DCUjT3hj2p3hpmsTg== X-Received: by 2002:a17:902:a502:b029:e8:3a40:bc6d with SMTP id s2-20020a170902a502b02900e83a40bc6dmr4974818plq.14.1617267470411; Thu, 01 Apr 2021 01:57:50 -0700 (PDT) Received: from Asurada-Nvidia (thunderhill.nvidia.com. [216.228.112.22]) by smtp.gmail.com with ESMTPSA id y7sm4824167pja.25.2021.04.01.01.57.49 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Thu, 01 Apr 2021 01:57:50 -0700 (PDT) Date: Thu, 1 Apr 2021 01:55:49 -0700 From: Nicolin Chen To: Dmitry Osipenko Cc: Thierry Reding , Joerg Roedel , Jonathan Hunter , Krishna Reddy , Will Deacon , iommu@lists.linux-foundation.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, guillaume.tucker@collabora.com Subject: Re: [PATCH v1 2/2] iommu/tegra-smmu: Revert workaround that was needed for Nyan Big Chromebook Message-ID: <20210401085549.GA31146@Asurada-Nvidia> References: <20210328233256.20494-1-digetx@gmail.com> <20210328233256.20494-2-digetx@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210328233256.20494-2-digetx@gmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org On Mon, Mar 29, 2021 at 02:32:56AM +0300, Dmitry Osipenko wrote: > The previous commit fixes problem where display client was attaching too > early to IOMMU during kernel boot in a multi-platform kernel configuration > which enables CONFIG_ARM_DMA_USE_IOMMU=y. The workaround that helped to > defer the IOMMU attachment for Nyan Big Chromebook isn't needed anymore, > revert it. Sorry for the late reply. I have been busy with downstream tasks. I will give them a try by the end of the week. Yet, probably it'd be better to include Guillaume also as he has the Nyan platform.