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

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Subject: Re: [RFC PATCH 16/42] iommufd: Enable device feature IOPF during device attachment to KVM HWPT
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Tue, 5 Dec 2023 10:53:41 -0400
Cc: iommu@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, alex.williamson@xxxxxxxxxx, pbonzini@xxxxxxxxxx, seanjc@xxxxxxxxxx, joro@xxxxxxxxxx, will@xxxxxxxxxx, robin.murphy@xxxxxxx, kevin.tian@xxxxxxxxx, baolu.lu@xxxxxxxxxxxxxxx, dwmw2@xxxxxxxxxxxxx, yi.l.liu@xxxxxxxxx
In-reply-to: <ZW7NwSCzswweHZh6@yzhao56-desk.sh.intel.com>
References: <20231202091211.13376-1-yan.y.zhao@intel.com> <20231202092311.14392-1-yan.y.zhao@intel.com> <20231204183603.GN1493156@nvidia.com> <ZW7NwSCzswweHZh6@yzhao56-desk.sh.intel.com>

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

Follow-Ups:
- Re: [RFC PATCH 16/42] iommufd: Enable device feature IOPF during device attachment to KVM HWPT
  - From: Yan Zhao

References:
- [RFC PATCH 00/42] Sharing KVM TDP to IOMMU
  - From: Yan Zhao
- [RFC PATCH 16/42] iommufd: Enable device feature IOPF during device attachment to KVM HWPT
  - From: Yan Zhao
- Re: [RFC PATCH 16/42] iommufd: Enable device feature IOPF during device attachment to KVM HWPT
  - From: Jason Gunthorpe
- Re: [RFC PATCH 16/42] iommufd: Enable device feature IOPF during device attachment to KVM HWPT
  - From: Yan Zhao

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