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Mon, 17 Oct 2022 16:00:36 -0700 From: Nicolin Chen <nicolinc@nvidia.com> To: <joro@8bytes.org>, <will@kernel.org>, <robin.murphy@arm.com> CC: <jgg@nvidia.com>, <kevin.tian@intel.com>, <quic_jjohnson@quicinc.com>, <suravee.suthikulpanit@amd.com>, <robdclark@gmail.com>, <dwmw2@infradead.org>, <baolu.lu@linux.intel.com>, <yong.wu@mediatek.com>, <matthias.bgg@gmail.com>, <orsonzhai@gmail.com>, <baolin.wang@linux.alibaba.com>, <zhang.lyra@gmail.com>, <thierry.reding@gmail.com>, <vdumpa@nvidia.com>, <jonathanh@nvidia.com>, <jean-philippe@linaro.org>, <tglx@linutronix.de>, <shameerali.kolothum.thodi@huawei.com>, <christophe.jaillet@wanadoo.fr>, <yangyicong@hisilicon.com>, <yangyingliang@huawei.com>, <quic_saipraka@quicinc.com>, <jon@solid-run.com>, <iommu@lists.linux.dev>, <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-arm-msm@vger.kernel.org>, <linux-mediatek@lists.infradead.org>, <linux-tegra@vger.kernel.org>, <virtualization@lists.linux-foundation.org> Subject: [PATCH v7 0/5] Define EINVAL as device/domain incompatibility Date: Mon, 17 Oct 2022 16:00:29 -0700 Message-ID: <cover.1666042872.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT038:EE_|SA0PR12MB4366:EE_ X-MS-Office365-Filtering-Correlation-Id: f6db7ab7-1102-4752-fedb-08dab0937223 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Define EINVAL as device/domain incompatibility
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On Mon, Oct 17, 2022 at 04:00:29PM -0700, Nicolin Chen wrote: > This series is to replace the previous EMEDIUMTYPE patch in a VFIO series: > https://lore.kernel.org/kvm/Yxnt9uQTmbqul5lf@8bytes.org/ > > The purpose is to regulate all existing ->attach_dev callback functions to > use EINVAL exclusively for an incompatibility error between a device and a > domain. This allows VFIO and IOMMUFD to detect such a soft error, and then > try a different domain with the same device. > > Among all the patches, the first two are preparatory changes. And then one > patch to update kdocs and another three patches for the enforcement effort. > > Although it might be ideal to merge the previous VFIO series together with > this series, given the number of new changes, the review in the IOMMU list > might need a couple of rounds to finalize. Also, considering that v6.0 is > at rc5 now, perhaps we could merge this IOMMU series and the VFIO one in > different cycles to avoid merge conflicts. If there's less concern for it, > I can respin the finalized version of this series with the previous VFIO > one to merge together into the VFIO tree. > > This series is also available on Github: > https://github.com/nicolinc/iommufd/commits/iommu_attach_dev-v7 Since it didn't make v6.1-rc1, I'd like this on a PR as we have two trees that will need it now. Joerg I can make this into a formal signed PR if that is how you'd like things? Thanks, Jason