linux-kernel - Re: [PATCH v4 0/8] iommu: Remove IOMMU_DEV_FEAT_SVA/

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Message-ID: <20250317141501.GE9311@nvidia.com>
Date: Mon, 17 Mar 2025 11:15:01 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Zhangfei Gao <zhangfei.gao@...aro.org>
Cc: Lu Baolu <baolu.lu@...ux.intel.com>, Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
	Kevin Tian <kevin.tian@...el.com>,
	Dave Jiang <dave.jiang@...el.com>, Vinod Koul <vkoul@...nel.org>,
	Fenghua Yu <fenghuay@...dia.com>,
	Zhou Wang <wangzhou1@...ilicon.com>, iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/8] iommu: Remove IOMMU_DEV_FEAT_SVA/_IOPF

On Fri, Mar 14, 2025 at 04:11:56PM +0800, Zhangfei Gao wrote:
> Hi, Baolu
> 
> On Thu, 13 Mar 2025 at 13:19, Lu Baolu <baolu.lu@...ux.intel.com> wrote:
> >
> > The new method for driver fault reporting support relies on the domain
> > to specify a iopf_handler. The driver should detect this and setup the
> > HW when fault capable domains are attached.
> >
> > Move SMMUv3 to use this method and have VT-D validate support during
> > attach so that all three fault capable drivers have a no-op FEAT_SVA and
> > _IOPF. Then remove them.
> >
> > This was initiated by Jason. I'm following up to remove FEAT_IOPF and
> > further clean up.
> >
> > The whole series is also available at github:
> > https://github.com/LuBaolu/intel-iommu/commits/iommu_no_feat-v4
> 
> I retested this branch, and it works
> 
> https://github.com/Linaro/linux-kernel-uadk/tree/iommu_no_feat-v4

Thanks!

Jason