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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1F78CC4332F for ; Wed, 23 Feb 2022 09:44:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239373AbiBWJou (ORCPT ); Wed, 23 Feb 2022 04:44:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239365AbiBWJot (ORCPT ); Wed, 23 Feb 2022 04:44:49 -0500 Received: from mail.kapsi.fi (mail.kapsi.fi [IPv6:2001:67c:1be8::25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9582A70F4A; Wed, 23 Feb 2022 01:44:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kapsi.fi; s=20161220; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=uD+YdSB7BK2YZwHIlrFrUTb1ozQHZ1Cv2M2UMS1FjFg=; b=ddUFMN63QJ6TBX1ryUpKDsU/sP +7bMajKfZDclWj9HZR+nZqarXuhOYEc6+hQbWxMk1nIPbkJT3HthlJ+E3J7gP+aY9mkI12PxJTwVz j5o4v0FG6u/gMKV4m/QztKGHnt4kpcUZrULZUio4pv6LvX8W9HuQ+EaSsI9UA1MTfYL2wRR0+siSb 8+VsToOmQMrcizomZAYvuvXA1fqbsA30K5w1Xbfa/4JFtCLIOP4S5Sxd+MR15CRsWy1QPPk6NaoIz OXPOpzYJ93NSv7xV6y6zIGnswVRXmhe45W0UBnXxJV4IBbSb9j4ZVAbXKcNb7/9F5yjdZDB2l8pd9 Aid3wUXg==; Received: from 91-158-25-70.elisa-laajakaista.fi ([91.158.25.70] helo=[192.168.1.10]) by mail.kapsi.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1nMoBn-0003QL-UA; Wed, 23 Feb 2022 11:44:03 +0200 Message-ID: Date: Wed, 23 Feb 2022 11:44:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Subject: Re: [PATCH v3 3/9] gpu: host1x: Add context device management code Content-Language: en-US To: Christoph Hellwig , Mikko Perttunen Cc: thierry.reding@gmail.com, jonathanh@nvidia.com, joro@8bytes.org, will@kernel.org, robh+dt@kernel.org, robin.murphy@arm.com, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20220218113952.3077606-1-mperttunen@nvidia.com> <20220218113952.3077606-4-mperttunen@nvidia.com> From: Mikko Perttunen In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 91.158.25.70 X-SA-Exim-Mail-From: cyndis@kapsi.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org On 2/22/22 18:24, Christoph Hellwig wrote: > On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote: >> + >> +/* >> + * Due to an issue with T194 NVENC, only 38 bits can be used. >> + * Anyway, 256GiB of IOVA ought to be enough for anyone. >> + */ >> +static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38); > > You need a mask per device. Please don't share the same variable > for multiple masks. > >> +EXPORT_SYMBOL(host1x_context_alloc); > > All this low-level code really should be EXPORT_SYMBOL_GPL. Thanks, will fix (and same for patch 2). Mikko 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 Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 794D5C433EF for ; Wed, 23 Feb 2022 09:44:33 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 1379F813E2; Wed, 23 Feb 2022 09:44:33 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9bpseQ9_iE3c; Wed, 23 Feb 2022 09:44:32 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTPS id E7F7A813DC; Wed, 23 Feb 2022 09:44:31 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id BC9BDC001A; Wed, 23 Feb 2022 09:44:31 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 925C6C0011 for ; Wed, 23 Feb 2022 09:44:29 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 728D88136B for ; Wed, 23 Feb 2022 09:44:29 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mmy2PPpIi8FZ for ; Wed, 23 Feb 2022 09:44:27 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from mail.kapsi.fi (mail.kapsi.fi [IPv6:2001:67c:1be8::25]) by smtp1.osuosl.org (Postfix) with ESMTPS id 3447381362 for ; Wed, 23 Feb 2022 09:44:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kapsi.fi; s=20161220; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=uD+YdSB7BK2YZwHIlrFrUTb1ozQHZ1Cv2M2UMS1FjFg=; b=ddUFMN63QJ6TBX1ryUpKDsU/sP +7bMajKfZDclWj9HZR+nZqarXuhOYEc6+hQbWxMk1nIPbkJT3HthlJ+E3J7gP+aY9mkI12PxJTwVz j5o4v0FG6u/gMKV4m/QztKGHnt4kpcUZrULZUio4pv6LvX8W9HuQ+EaSsI9UA1MTfYL2wRR0+siSb 8+VsToOmQMrcizomZAYvuvXA1fqbsA30K5w1Xbfa/4JFtCLIOP4S5Sxd+MR15CRsWy1QPPk6NaoIz OXPOpzYJ93NSv7xV6y6zIGnswVRXmhe45W0UBnXxJV4IBbSb9j4ZVAbXKcNb7/9F5yjdZDB2l8pd9 Aid3wUXg==; Received: from 91-158-25-70.elisa-laajakaista.fi ([91.158.25.70] helo=[192.168.1.10]) by mail.kapsi.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1nMoBn-0003QL-UA; Wed, 23 Feb 2022 11:44:03 +0200 Message-ID: Date: Wed, 23 Feb 2022 11:44:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Subject: Re: [PATCH v3 3/9] gpu: host1x: Add context device management code Content-Language: en-US To: Christoph Hellwig , Mikko Perttunen References: <20220218113952.3077606-1-mperttunen@nvidia.com> <20220218113952.3077606-4-mperttunen@nvidia.com> From: Mikko Perttunen In-Reply-To: X-SA-Exim-Connect-IP: 91.158.25.70 X-SA-Exim-Mail-From: cyndis@kapsi.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false Cc: devicetree@vger.kernel.org, will@kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, jonathanh@nvidia.com, iommu@lists.linux-foundation.org, thierry.reding@gmail.com, dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On 2/22/22 18:24, Christoph Hellwig wrote: > On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote: >> + >> +/* >> + * Due to an issue with T194 NVENC, only 38 bits can be used. >> + * Anyway, 256GiB of IOVA ought to be enough for anyone. >> + */ >> +static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38); > > You need a mask per device. Please don't share the same variable > for multiple masks. > >> +EXPORT_SYMBOL(host1x_context_alloc); > > All this low-level code really should be EXPORT_SYMBOL_GPL. Thanks, will fix (and same for patch 2). Mikko _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu 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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 76E5BC43219 for ; Wed, 23 Feb 2022 09:44:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 495F810E9FF; Wed, 23 Feb 2022 09:44:26 +0000 (UTC) Received: from mail.kapsi.fi (mail.kapsi.fi [IPv6:2001:67c:1be8::25]) by gabe.freedesktop.org (Postfix) with ESMTPS id C0E8610E9FB for ; Wed, 23 Feb 2022 09:44:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kapsi.fi; s=20161220; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=uD+YdSB7BK2YZwHIlrFrUTb1ozQHZ1Cv2M2UMS1FjFg=; b=ddUFMN63QJ6TBX1ryUpKDsU/sP +7bMajKfZDclWj9HZR+nZqarXuhOYEc6+hQbWxMk1nIPbkJT3HthlJ+E3J7gP+aY9mkI12PxJTwVz j5o4v0FG6u/gMKV4m/QztKGHnt4kpcUZrULZUio4pv6LvX8W9HuQ+EaSsI9UA1MTfYL2wRR0+siSb 8+VsToOmQMrcizomZAYvuvXA1fqbsA30K5w1Xbfa/4JFtCLIOP4S5Sxd+MR15CRsWy1QPPk6NaoIz OXPOpzYJ93NSv7xV6y6zIGnswVRXmhe45W0UBnXxJV4IBbSb9j4ZVAbXKcNb7/9F5yjdZDB2l8pd9 Aid3wUXg==; Received: from 91-158-25-70.elisa-laajakaista.fi ([91.158.25.70] helo=[192.168.1.10]) by mail.kapsi.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1nMoBn-0003QL-UA; Wed, 23 Feb 2022 11:44:03 +0200 Message-ID: Date: Wed, 23 Feb 2022 11:44:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Subject: Re: [PATCH v3 3/9] gpu: host1x: Add context device management code Content-Language: en-US To: Christoph Hellwig , Mikko Perttunen References: <20220218113952.3077606-1-mperttunen@nvidia.com> <20220218113952.3077606-4-mperttunen@nvidia.com> From: Mikko Perttunen In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 91.158.25.70 X-SA-Exim-Mail-From: cyndis@kapsi.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, will@kernel.org, joro@8bytes.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, jonathanh@nvidia.com, iommu@lists.linux-foundation.org, thierry.reding@gmail.com, dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, robin.murphy@arm.com, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 2/22/22 18:24, Christoph Hellwig wrote: > On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote: >> + >> +/* >> + * Due to an issue with T194 NVENC, only 38 bits can be used. >> + * Anyway, 256GiB of IOVA ought to be enough for anyone. >> + */ >> +static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38); > > You need a mask per device. Please don't share the same variable > for multiple masks. > >> +EXPORT_SYMBOL(host1x_context_alloc); > > All this low-level code really should be EXPORT_SYMBOL_GPL. Thanks, will fix (and same for patch 2). Mikko 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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 94949C433EF for ; Wed, 23 Feb 2022 09:45:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=TXlG+xYsxj6tF+jv0qcPXKktngNujCK7NAZhF5nui8c=; b=il30NANb9aeDgv ZlWygKQnU5P5TqhWNctd5ra9VzHVFWvaIUipyqvILSM7/zSKziogLtshgYHb5gv+JYH03ivF4IgvS iRKVCCFvItNKJZlLUP3q9KliwjWbmg9Gb15T8JrpnbX5btEEqRA1fWJBgqZpBzhIVkmL2m1cMWMdr S/SSSajvq2bvjyOCpMqXMCEJqKS2WFsjDsSuiyolAm/twFFCkPlf3tmpC8hWcKBSACG44w8n4rtlH DL+f1oDhqKD0crwGp8LHC6+ktnBHEXNFeCLXQN0M2Q4Q9IW8cYmjNzFH/OZS6qzMRvENxkf+il3sw B9d3iQwI+XsJCfYX7miw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nMoCE-00DXfv-4W; Wed, 23 Feb 2022 09:44:30 +0000 Received: from mail.kapsi.fi ([2001:67c:1be8::25]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nMoCA-00DXe8-Na for linux-arm-kernel@lists.infradead.org; Wed, 23 Feb 2022 09:44:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kapsi.fi; s=20161220; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From: References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=uD+YdSB7BK2YZwHIlrFrUTb1ozQHZ1Cv2M2UMS1FjFg=; b=ddUFMN63QJ6TBX1ryUpKDsU/sP +7bMajKfZDclWj9HZR+nZqarXuhOYEc6+hQbWxMk1nIPbkJT3HthlJ+E3J7gP+aY9mkI12PxJTwVz j5o4v0FG6u/gMKV4m/QztKGHnt4kpcUZrULZUio4pv6LvX8W9HuQ+EaSsI9UA1MTfYL2wRR0+siSb 8+VsToOmQMrcizomZAYvuvXA1fqbsA30K5w1Xbfa/4JFtCLIOP4S5Sxd+MR15CRsWy1QPPk6NaoIz OXPOpzYJ93NSv7xV6y6zIGnswVRXmhe45W0UBnXxJV4IBbSb9j4ZVAbXKcNb7/9F5yjdZDB2l8pd9 Aid3wUXg==; Received: from 91-158-25-70.elisa-laajakaista.fi ([91.158.25.70] helo=[192.168.1.10]) by mail.kapsi.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1nMoBn-0003QL-UA; Wed, 23 Feb 2022 11:44:03 +0200 Message-ID: Date: Wed, 23 Feb 2022 11:44:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.1 Subject: Re: [PATCH v3 3/9] gpu: host1x: Add context device management code Content-Language: en-US To: Christoph Hellwig , Mikko Perttunen Cc: thierry.reding@gmail.com, jonathanh@nvidia.com, joro@8bytes.org, will@kernel.org, robh+dt@kernel.org, robin.murphy@arm.com, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20220218113952.3077606-1-mperttunen@nvidia.com> <20220218113952.3077606-4-mperttunen@nvidia.com> From: Mikko Perttunen In-Reply-To: X-SA-Exim-Connect-IP: 91.158.25.70 X-SA-Exim-Mail-From: cyndis@kapsi.fi X-SA-Exim-Scanned: No (on mail.kapsi.fi); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220223_014426_942328_48D21BFF X-CRM114-Status: GOOD ( 12.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2/22/22 18:24, Christoph Hellwig wrote: > On Fri, Feb 18, 2022 at 01:39:46PM +0200, Mikko Perttunen wrote: >> + >> +/* >> + * Due to an issue with T194 NVENC, only 38 bits can be used. >> + * Anyway, 256GiB of IOVA ought to be enough for anyone. >> + */ >> +static dma_addr_t context_device_dma_mask = DMA_BIT_MASK(38); > > You need a mask per device. Please don't share the same variable > for multiple masks. > >> +EXPORT_SYMBOL(host1x_context_alloc); > > All this low-level code really should be EXPORT_SYMBOL_GPL. Thanks, will fix (and same for patch 2). Mikko _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel