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Mon, 21 Aug 2023 14:40:14 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1%6]) with mapi id 15.20.6699.020; Mon, 21 Aug 2023 14:40:14 +0000 Date: Mon, 21 Aug 2023 11:40:12 -0300 From: Jason Gunthorpe To: Joerg Roedel Cc: Robin Murphy , Andy Gross , David Airlie , alsa-devel@alsa-project.org, Bjorn Andersson , Andrzej Hajda , ath10k@lists.infradead.org, ath11k@lists.infradead.org, Mark Brown , Bryan O'Donoghue , Christian Gmeiner , Daniel Vetter , devicetree@vger.kernel.org, dmaengine@vger.kernel.org, Dmitry Baryshkov , dri-devel@lists.freedesktop.org, Emma Anholt , etnaviv@lists.freedesktop.org, freedreno@lists.freedesktop.org, Frank Rowand , iommu@lists.linux.dev, Jernej Skrabec , Konrad Dybcio , Kalle Valo , Lucas Stach , Liam Girdwood , Russell King , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-wireless@vger.kernel.org, Marijn Suijten , Mauro Carvalho Chehab , Mikko Perttunen , Maxime Ripard , Sinan Kaya , Jaroslav Kysela , Abhinav Kumar , Jeff Johnson , Vikash Garodia , Rob Clark , Rob Herring , Samuel Holland , Sean Paul , Stanimir Varbanov , Thierry Reding , Takashi Iwai , Vinod Koul , Chen-Yu Tsai , Will Deacon , =?utf-8?B?UmFmYcWCIE1pxYJlY2tp?= , Lu Baolu , Joerg Roedel , Kevin Tian , Marek Szyprowski , Chen-Yu Tsai Subject: Re: [PATCH] iommu: Remove the device_lock_assert() from __iommu_probe_device() Message-ID: References: <0-v1-98d20e768c66+7-of_dma_lock_jgg@nvidia.com> <78114fd6-9b83-92ba-418f-6cc7bda9df9b@arm.com> Content-Type: text/plain; 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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-size; news-moderation; no-subject; digests; suspicious-header Message-ID-Hash: NCZ7RFH2HONGJEWRSIOAG3WYZNIA7PEP X-Message-ID-Hash: NCZ7RFH2HONGJEWRSIOAG3WYZNIA7PEP X-Mailman-Approved-At: Thu, 24 Aug 2023 07:30:03 +0000 X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Mon, Aug 21, 2023 at 04:36:49PM +0200, Joerg Roedel wrote: > On Mon, Aug 21, 2023 at 09:51:13AM -0300, Jason Gunthorpe wrote: > > So now that Joerg has dropped it - what is your big idea to make the > > locking actually work right? > > I am not opposed to the general idea. Well, I think Robin is opposed to the device_lock, and I don't know what his view of the alternative is. > When putting it into the tree I wasn't aware how many users still > need to be adapted to properly work with this. It is surprising to me too! > We can do another try once the issues have been sorted out and you have > agreed with Robin on a workable way forward. I will repost just the group part of that series after rc1, as they've been in -next for a while now they should be still good. It is a nice cleanup that doesn't leak out. 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Received: from LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) by LV8PR12MB9081.namprd12.prod.outlook.com (2603:10b6:408:188::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6699.24; Mon, 21 Aug 2023 14:40:14 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1%6]) with mapi id 15.20.6699.020; Mon, 21 Aug 2023 14:40:14 +0000 Date: Mon, 21 Aug 2023 11:40:12 -0300 From: Jason Gunthorpe To: Joerg Roedel Cc: Robin Murphy , Andy Gross , David Airlie , alsa-devel@alsa-project.org, Bjorn Andersson , Andrzej Hajda , ath10k@lists.infradead.org, ath11k@lists.infradead.org, Mark Brown , Bryan O'Donoghue , Christian Gmeiner , Daniel Vetter , devicetree@vger.kernel.org, dmaengine@vger.kernel.org, Dmitry Baryshkov , dri-devel@lists.freedesktop.org, Emma Anholt , etnaviv@lists.freedesktop.org, freedreno@lists.freedesktop.org, Frank Rowand , iommu@lists.linux.dev, Jernej Skrabec , Konrad Dybcio , Kalle Valo , Lucas Stach , Liam Girdwood , Russell King , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, linux-wireless@vger.kernel.org, Marijn Suijten , Mauro Carvalho Chehab , Mikko Perttunen , Maxime Ripard , Sinan Kaya , Jaroslav Kysela , Abhinav Kumar , Jeff Johnson , Vikash Garodia , Rob Clark , Rob Herring , Samuel Holland , Sean Paul , Stanimir Varbanov , Thierry Reding , Takashi Iwai , Vinod Koul , Chen-Yu Tsai , Will Deacon , =?utf-8?B?UmFmYcWCIE1pxYJlY2tp?= , Lu Baolu , Joerg Roedel , Kevin Tian , Marek Szyprowski , Chen-Yu Tsai Subject: Re: [PATCH] iommu: Remove the device_lock_assert() from __iommu_probe_device() Message-ID: References: <0-v1-98d20e768c66+7-of_dma_lock_jgg@nvidia.com> <78114fd6-9b83-92ba-418f-6cc7bda9df9b@arm.com> Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: MN2PR15CA0063.namprd15.prod.outlook.com (2603:10b6:208:237::32) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|LV8PR12MB9081:EE_ X-MS-Office365-Filtering-Correlation-Id: 8b2e8db9-ab10-42f4-6559-08dba2548788 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+ath10k=archiver.kernel.org@lists.infradead.org On Mon, Aug 21, 2023 at 04:36:49PM +0200, Joerg Roedel wrote: > On Mon, Aug 21, 2023 at 09:51:13AM -0300, Jason Gunthorpe wrote: > > So now that Joerg has dropped it - what is your big idea to make the > > locking actually work right? > > I am not opposed to the general idea. Well, I think Robin is opposed to the device_lock, and I don't know what his view of the alternative is. > When putting it into the tree I wasn't aware how many users still > need to be adapted to properly work with this. It is surprising to me too! > We can do another try once the issues have been sorted out and you have > agreed with Robin on a workable way forward. I will repost just the group part of that series after rc1, as they've been in -next for a while now they should be still good. It is a nice cleanup that doesn't leak out. 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath11k" Errors-To: ath11k-bounces+ath11k=archiver.kernel.org@lists.infradead.org On Mon, Aug 21, 2023 at 04:36:49PM +0200, Joerg Roedel wrote: > On Mon, Aug 21, 2023 at 09:51:13AM -0300, Jason Gunthorpe wrote: > > So now that Joerg has dropped it - what is your big idea to make the > > locking actually work right? > > I am not opposed to the general idea. Well, I think Robin is opposed to the device_lock, and I don't know what his view of the alternative is. > When putting it into the tree I wasn't aware how many users still > need to be adapted to properly work with this. It is surprising to me too! > We can do another try once the issues have been sorted out and you have > agreed with Robin on a workable way forward. I will repost just the group part of that series after rc1, as they've been in -next for a while now they should be still good. It is a nice cleanup that doesn't leak out. 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Well, I think Robin is opposed to the device_lock, and I don't know what his view of the alternative is. > When putting it into the tree I wasn't aware how many users still > need to be adapted to properly work with this. It is surprising to me too! > We can do another try once the issues have been sorted out and you have > agreed with Robin on a workable way forward. I will repost just the group part of that series after rc1, as they've been in -next for a while now they should be still good. It is a nice cleanup that doesn't leak out. Thanks, Jason