linux-kernel - Re: [RFC PATCH 16/42] iommufd: Enable device feature IOPF during device attachment to KVM HWPT

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Message-ID: <20231205145341.GF2787277@nvidia.com>
Date:   Tue, 5 Dec 2023 10:53:41 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Yan Zhao <yan.y.zhao@...el.com>
Cc:     iommu@...ts.linux.dev, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, alex.williamson@...hat.com,
        pbonzini@...hat.com, seanjc@...gle.com, joro@...tes.org,
        will@...nel.org, robin.murphy@....com, kevin.tian@...el.com,
        baolu.lu@...ux.intel.com, dwmw2@...radead.org, yi.l.liu@...el.com
Subject: Re: [RFC PATCH 16/42] iommufd: Enable device feature IOPF during
 device attachment to KVM HWPT

On Tue, Dec 05, 2023 at 03:14:09PM +0800, Yan Zhao wrote:

> > I would like to remove IOMMU_DEV_FEAT_IOPF completely please
> 
> So, turn on device PRI during device attachment in IOMMU vendor driver?

If a fault requesting domain is attached then PRI should just be
enabled in the driver

Jason