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=-10.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 CB979C433E2 for ; Sun, 30 Aug 2020 19:46:10 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 92CEA20757 for ; Sun, 30 Aug 2020 19:46:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="w1LnTHdN"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fhzf3GQj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 92CEA20757 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-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=W4iVF4qel28LeTlSUzeNywQF4Az7cY6wxeMR865m9sk=; b=w1LnTHdNvYveKSW0G5TOAmeZg ouIQebopdOYCQosd/vQjwFLUdUe5YOHTpx7LZcGmrItcw90k+LkQmYbNIoO8Jb0dX3jHj1XAPxakI /HZLdZQYFNAobv2LuysA9+84kH+2YpEMJ3cUjSBF1FwCQ6oxF7n49YESSjEPziNwHgwcYoNZdSDdo ck/RKgKeNTpkaGn+cCGNhjc3oS4IOD0SZzOYQMvAd/6AtDOYMOHdZ/D3QRmjYLdcNAtT7+vBGfuAs vN+VihF0LS7UEhTUfyGW/YFiwUjTRO6R1ovpjYrBGkK5QdbWBMadP4J/TUO2NTbrJ/ZFnDW58FfbS Z/yeMsYKw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kCTFt-0007CZ-U0; Sun, 30 Aug 2020 19:44:46 +0000 Received: from mail-lj1-x243.google.com ([2a00:1450:4864:20::243]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kCTFr-0007B9-0N; Sun, 30 Aug 2020 19:44:43 +0000 Received: by mail-lj1-x243.google.com with SMTP id y4so3263955ljk.8; Sun, 30 Aug 2020 12:44:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=w2b3uQ3grQuHzLpPQOfEHno6ki6zY9r+UONQurulOvI=; b=fhzf3GQjA1EtS/4zAwotNBVfEP5BgQC/vHh7NlqVuoqdj7ROn0tVvewLZVBzxTj4Pv 4uAEsVCRdvMO7MN38yRhvjx55DRhviVUp+DeySquLtSENxd8LUNUq5mIKtUDp7268hWj EiAUYpoHBSpKqaW7iOB+cqshvXFhudBmVbsI7vuQfku+8lEdvR++g+KmaUBIrqUudFxn W8bUy8KkEXDCgYhxAAGz+7w9KmUMEitnB8JF5nbRsi/deNwUInd6AYGqmk3s0Ib8ljbl l0EyB1+767rr0k5EB5hEav1tXcXzg8p3RaCj4yuxNRG9oCWCo1/o1xG6lEcvfnnZFy/d 3pcQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=w2b3uQ3grQuHzLpPQOfEHno6ki6zY9r+UONQurulOvI=; b=QReRvG/zv27rgVJ0HAQyFSTeYZZt4BRFRJNO0iwRbBkHYibpWIKvoZobLUS9HBc7vU lMg7e2kW093Ycp+B0NS6pOMZ/5MIdym9rWaaEfUjsvsr4C8gmQLse6Pec53WWnbzgNbh 5CuJiSKWvvyOBi9xu251HNiHTzo19zV9b04hweBfMwwI36TbPCRNBlHHqyx0GGvc9Nb2 tUhh/Q34n16QYrYe10Sxh4RqAFKZ4JmlCwDeP+b8v4AOlmkeHTLZUZycbWHIg9BvalaK N6dzTw+kDEoDdRST7y9n5yBSk/Qzz16RMnQa6D2KshaHetOjPvpBfHbMf83L8bXKznpX SfcA== X-Gm-Message-State: AOAM530TPkgoo4MJAXoc4scjLvEA9rWwqMAZhqW+lcjAMnvjlJopJKIY rYbDm4eMy0Bl7tj3+MLMeSI= X-Google-Smtp-Source: ABdhPJz59TfkPi8wlRB5m8RE5yjEcxQe68Z6X9P8P2LdznriMOncqOezMDUqioFbPNx1FbZLjJi8TA== X-Received: by 2002:a05:651c:11c5:: with SMTP id z5mr3132694ljo.74.1598816680601; Sun, 30 Aug 2020 12:44:40 -0700 (PDT) Received: from [192.168.2.145] (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.googlemail.com with ESMTPSA id e8sm1114886lja.93.2020.08.30.12.44.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 30 Aug 2020 12:44:39 -0700 (PDT) Subject: Re: [PATCH 16/18] staging/media/tegra-vde: Clean up IOMMU workaround To: Thierry Reding References: <3535c205b9bce52556abbf2f63384fb38e009df9.1597931876.git.robin.murphy@arm.com> <07135a55-cbc9-83e5-60dc-731282192554@gmail.com> <62a72187-442b-2103-46c3-39d3cd999f54@gmail.com> <20200827155446.GB1660457@ulmo> From: Dmitry Osipenko Message-ID: Date: Sun, 30 Aug 2020 22:44:38 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200827155446.GB1660457@ulmo> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200830_154443_106636_77EADF46 X-CRM114-Status: GOOD ( 17.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: geert+renesas@glider.be, dri-devel@lists.freedesktop.org, bjorn.andersson@linaro.org, linux-tegra@vger.kernel.org, laurent.pinchart@ideasonboard.com, will@kernel.org, hch@lst.de, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, joro@8bytes.org, magnus.damm@gmail.com, linux@armlinux.org.uk, jonathanh@nvidia.com, agross@kernel.org, yong.wu@mediatek.com, kyungmin.park@samsung.com, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, inki.dae@samsung.com, linux-mediatek@lists.infradead.org, matthias.bgg@gmail.com, linux-arm-kernel@lists.infradead.org, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, iommu@lists.linux-foundation.org, Robin Murphy Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org MjcuMDguMjAyMCAxODo1NCwgVGhpZXJyeSBSZWRpbmcg0L/QuNGI0LXRgjoKLi4uCj4+IFRoZSBU ZWdyYSBEUk0gaGFzIGEgdmVyeSBzcGVjaWFsIHF1aXJrIGZvciBBUk0zMiB0aGF0IHdhcyBhZGRl ZCBpbiB0aGlzCj4+IGNvbW1pdCBbMl0gYW5kIGRyaXZlciByZWxpZXMgb24gY2hlY2tpbmcgb2Yg d2hldGhlciBleHBsaWNpdCBvciBpbXBsaWNpdAo+PiBJT01NVSBpcyB1c2VkIGluIG9yZGVyIHRv IGFjdGl2YXRlIHRoZSBxdWlyay4KPj4KPj4gWzJdCj4+IGh0dHBzOi8vZ2l0Lmtlcm5lbC5vcmcv cHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L25leHQvbGludXgtbmV4dC5naXQvY29tbWl0Lz9pZD0y NzNkYTVhMDQ2OTY1Y2NmMGVjNzllYjYzZjJkNTE3MzQ2N2UyMGZhCj4+Cj4+IE9uY2UgdGhlIGlt cGxpY2l0IElPTU1VIGlzIHVzZWQgZm9yIHRoZSBEUk0gZHJpdmVyLCB0aGUgcXVpcmsgbm8gbG9u Z2VyCj4+IHdvcmtzIChpZiBJJ20gbm90IG1pc3Npbmcgc29tZXRoaW5nKS4gVGhpcyBwcm9ibGVt IG5lZWRzIHRvIGJlIHJlc29sdmVkCj4+IGJlZm9yZSBpbXBsaWNpdCBJT01NVSBjb3VsZCBiZSB1 c2VkIGJ5IHRoZSBUZWdyYSBEUk0gb24gQVJNMzIuCi4uLgo+IEkgZG8gaGF2ZSBhIHBhdGNoIGx5 aW5nIGFyb3VuZCBzb21ld2hlcmUgdGhhdCBpbXBsZW1lbnRzIHRoZSBtYXBwaW5nCj4gY2FjaGUg dGhhdCB3YXMgcmVmZXJlbmNlZCBpbiB0aGUgYWJvdmUgY29tbWl0LiBMZXQgbWUga25vdyBpZiBJ IHNob3VsZAo+IGRpZyB0aGF0IHVwIGFuZCBzZW5kIGl0IG91dC4KCkhlbGxvLCBUaGllcnJ5ISBJ dCBjZXJ0YWlubHkgd2lsbCBiZSBpbnRlcmVzdGluZyB0byB0YWtlIGEgbG9vayBhdCB5b3Vycwpw YXRjaCEKCkkgdGhpbmsgdGhhdCB0aGUgY2FjaGluZyBzaG91bGRuJ3QgYmUgc3RyaWN0bHkgbmVj ZXNzYXJ5IGZvciBrZWVwaW5nIHRoZQpjdXJyZW50IHdvcmthcm91bmQgd29ya2luZyBhbmQgaXQg c2hvdWxkIGJlIHBvc3NpYmxlIHRvIGtlZXAgdGhlIGNvZGUKYXMtaXMgYnkgcmVwbGFjaW5nIHRo ZSBkb21haW4tdHlwZSBjaGVja2luZyB3aXRoIHRoZSBTb0MtZ2VuZXJhdGlvbgpjaGVjayBpbiB0 aGUgVGVncmEgRFJNIGRyaXZlci4KCkluIGdlbmVyYWwsIElNTyBpdCBzaG91bGQgYmUgYmV0dGVy IHRvIHN0YXNoIHRoZSBjb21wbGV4IGNoYW5nZXMgdW50aWwKd2UnbGwgZ2V0IGNsb3NlciB0byBh ZG9wdGluZyB0aGUgbmV3IFVBUEkgYXMgaXQgd2lsbCBjZXJ0YWlubHkgdG91Y2ggdGhlCmFzcGVj dCBvZiB0aGUgcGVyLWRldmljZSBtYXBwaW5ncy4gQnV0IGlmIHlvdXJzIHBhdGNoIGlzIGxlc3Mg dGhhbiAxMDAKTE9DLCB0aGVuIG1heWJlIHdlIGNvdWxkIGNvbnNpZGVyIGFwcGx5aW5nIGl0IHJp Z2h0IG5vdyEKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5m cmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xp bnV4LWFybS1rZXJuZWwK