linux-kernel - Re: [PATCH 1/1] iommu/vt-d: Move PCI PASID enablement to probe path

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Message-ID: <d3a8bba9-cd42-4034-9a3b-dc6c7bbe9448@linux.intel.com>
Date: Mon, 19 Aug 2024 15:11:40 +0800
From: Baolu Lu <baolu.lu@...ux.intel.com>
To: Vasant Hegde <vasant.hegde@....com>, Joerg Roedel <joro@...tes.org>,
 Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
 Jason Gunthorpe <jgg@...pe.ca>, Kevin Tian <kevin.tian@...el.com>,
 Yi Liu <yi.l.liu@...el.com>
Cc: baolu.lu@...ux.intel.com, iommu@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] iommu/vt-d: Move PCI PASID enablement to probe path

On 2024/8/19 15:09, Baolu Lu wrote:
> Yeah, so the iommu driver should flip the PRI switch on the PF whenever
> someone wants to turn it on for its VF.
> 
> We could change things up so that when the first iopf-capable domain is 
> attached to any VF or PF, we turn on PRI for the whole device. Then, we
> turn it off when every VF and PF have such domains detached.

Please ignore this. I forgot to remove it when writing the words. Sorry
about it.

Thanks,
baolu