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

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Message-ID: <ZW/Gk1Ili6uHBHYK@yzhao56-desk.sh.intel.com>
Date:   Wed, 6 Dec 2023 08:55:47 +0800
From:   Yan Zhao <yan.y.zhao@...el.com>
To:     Jason Gunthorpe <jgg@...dia.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 10:53:41AM -0400, Jason Gunthorpe wrote:
> 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
>
Right, it makes sense!