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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS 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 00C3CC6778F for ; Sat, 7 Jul 2018 11:07:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A97E321A61 for ; Sat, 7 Jul 2018 11:07:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="V4EwkXdK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A97E321A61 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753605AbeGGLHM (ORCPT ); Sat, 7 Jul 2018 07:07:12 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:39637 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752707AbeGGLHL (ORCPT ); Sat, 7 Jul 2018 07:07:11 -0400 Received: by mail-lj1-f196.google.com with SMTP id t7-v6so10875269ljj.6; Sat, 07 Jul 2018 04:07:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=rJEFotXbzAquOFKXgw8SCEnLyM10C8A3LaDxyc53bUQ=; b=V4EwkXdKiSWMXW5x1K9k/HzLxtzjPrD+T/GYQZ5jP7NoOFcB0oFtRDfAQtKg697+C4 s6Czj+3QbjohXoj+TFAnrxmYkwzYTrgkvSFyjDR6upJ/+/OiEBn2UBL7Mcx1NsTUgKbg mte/ogqAiYbvOjuHCfmt3LJBZFGwUkttpRKNtHZtNHTcjCwuQRd65Y9g2mEwRbrLKZEp u/bvQntju8xtBQRJx1xpiBJeNXVc3OqYgHlEKsXUCvNE2C3beVmSE8pwtyQPgnp6RT9g M+VbUB5ezIYtI38tLUGl+txvuwpUcWID3Ldbs9+2IcVh6BVNTjRZ9i6DccBWybejI88o ny6w== 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=rJEFotXbzAquOFKXgw8SCEnLyM10C8A3LaDxyc53bUQ=; b=FSlXFDE9JBOpsyygNRPQwSTVpuuWembscSF+/Lac/MuVJ1v+CzrMPwW20OPQ/aQ9Mf H0TPVJQHxY3+bHKqgkNTFe3CmVIay/bvFLTOKKZ0eWl7pigMRRZpiU68EimeeSppCQHD MGXzALAn1wDb1bk4INTgyz5dV9mKiMTd2Xy5sJxo6woetjh8vqOmOT8U3BlKkNdaM7qy rmrRseoj9U2NpGISt9aG3iMUdFVlOyR9Fg6dEWLvI6Mk31WlKDwbEiiZ/mr1XT9NSlY7 4Tsl8Otrzyxtjkbce+VH+lflwlAqxKFl73mBp7gLtelnZ7MJrQZb3nyFEvSHGMaavZCW whaQ== X-Gm-Message-State: APt69E1rnPLvvAyHxAS7WbBP5JYeQ0qGEyY5f2aDkjqhLDQRtooVMzDM 19bQTwQXrWuTbn1DXfqkMP10NVPI X-Google-Smtp-Source: AAOMgpfrr8zunc3/PHuaCYzHDrm2SPufQ7n0UIwAgAekkVUTsE7ty/Wmo99RAuYcNq49zUtlssnAXA== X-Received: by 2002:a2e:944:: with SMTP id 65-v6mr8897441ljj.30.1530961629693; Sat, 07 Jul 2018 04:07:09 -0700 (PDT) Received: from dimapc.localnet (109-252-91-84.nat.spd-mgts.ru. [109.252.91.84]) by smtp.gmail.com with ESMTPSA id p88-v6sm1581210ljp.90.2018.07.07.04.07.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 07 Jul 2018 04:07:09 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding Cc: Mikko Perttunen , linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1] gpu: host1x: Skip IOMMU initialization if firewall is enabled Date: Sat, 07 Jul 2018 14:07:01 +0300 Message-ID: <1530965.U9eOrqsrov@dimapc> In-Reply-To: <20180519010710.11693-1-digetx@gmail.com> References: <20180519010710.11693-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Saturday, 19 May 2018 04:07:10 MSK Dmitry Osipenko wrote: > Host1x's CDMA can't access the command buffers if IOMMU and Host1x > firewall are enabled in the kernels config because firewall doesn't map > the copied buffer into IOVA space. Fix this by skipping IOMMU > initialization if firewall is enabled as firewall merges sparse cmdbufs > into a single contiguous buffer and hence IOMMU isn't needed in this case. > > Signed-off-by: Dmitry Osipenko Thierry, please consider applying this patch.