linux-kernel - Re: [PATCH v8 07/10] iommufd: Fault-capable hwpt attach/detach/replace

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Message-ID: <20241018135343.GA1914429@nvidia.com>
Date: Fri, 18 Oct 2024 10:53:43 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Zhangfei Gao <zhangfei.gao@...aro.org>
Cc: Lu Baolu <baolu.lu@...ux.intel.com>, Kevin Tian <kevin.tian@...el.com>,
	Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Jean-Philippe Brucker <jean-philippe@...aro.org>,
	Nicolin Chen <nicolinc@...dia.com>, Yi Liu <yi.l.liu@...el.com>,
	Jacob Pan <jacob.jun.pan@...ux.intel.com>,
	Joel Granados <j.granados@...sung.com>, iommu@...ts.linux.dev,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org,
	Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>
Subject: Re: [PATCH v8 07/10] iommufd: Fault-capable hwpt
 attach/detach/replace

On Wed, Oct 16, 2024 at 12:25:03PM -0300, Jason Gunthorpe wrote:
> > > smmu-v3 needs some more fixing to move that
> > > arm_smmu_master_enable_sva() logic into domain attachment.
> > 
> > Will think about this, Thanks Jason
> 
> Can you test it if a patch is made?

Here it is:

https://github.com/jgunthorpe/linux/commits/smmuv3_nesting/

fa1528253d2210 iommu: Remove IOMMU_DEV_FEAT_SVA
5675560a272cf5 iommu/vt-d: Check if SVA is supported when attaching the SVA domain
94bc2b9525b508 iommu/arm-smmu-v3: Put iopf enablement in the domain attach path

Let me know..

Jason