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=-6.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 1659FC433DB for ; Sun, 3 Jan 2021 01:31:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BBFEA2078E for ; Sun, 3 Jan 2021 01:31:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726867AbhACBbU (ORCPT ); Sat, 2 Jan 2021 20:31:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726822AbhACBbT (ORCPT ); Sat, 2 Jan 2021 20:31:19 -0500 Received: from relay02.th.seeweb.it (relay02.th.seeweb.it [IPv6:2001:4b7a:2000:18::163]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 600F9C061573 for ; Sat, 2 Jan 2021 17:30:24 -0800 (PST) Received: from [192.168.1.101] (abac131.neoplus.adsl.tpnet.pl [83.6.166.131]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by m-r1.th.seeweb.it (Postfix) with ESMTPSA id 934011F4AC; Sun, 3 Jan 2021 02:30:19 +0100 (CET) Subject: Re: [PATCH] drm/msm: Fix MSM_INFO_GET_IOVA with carveout To: Iskren Chernev , Rob Clark Cc: ~postmarketos/upstreaming@lists.sr.ht, Sean Paul , David Airlie , Daniel Vetter , Bjorn Andersson , Jordan Crouse , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20210102202437.1630365-1-iskren.chernev@gmail.com> From: Konrad Dybcio Message-ID: <63647a5d-e621-b2ce-fb2c-587b5a49f697@somainline.org> Date: Sun, 3 Jan 2021 02:30:18 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <20210102202437.1630365-1-iskren.chernev@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Kind reminder that MSM8974, 8994, 8992 and friends are held back by the lack of IOMMU support upstream. There has been an attempt back in 2014(!) [1], but it was either overlooked or forgotten about ever since. I'd be more than happy to see someone look into this, as I have some other bits (almost) ready for both 8974 and 94, but MMUs aren't something I understand well enough yet. Konrad [1] https://lists.linuxfoundation.org/pipermail/iommu/2014-June/008993.html