linux-kernel - RE: [PATCH 0/2] Remove VT-d virtual command interface

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Date:   Mon, 13 Feb 2023 02:52:52 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        LKML <linux-kernel@...r.kernel.org>,
        "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>,
        "Robin Murphy" <robin.murphy@....com>
CC:     David Woodhouse <dwmw2@...radead.org>,
        "Raj, Ashok" <ashok.raj@...el.com>,
        "Liu, Yi L" <yi.l.liu@...el.com>, Jason Gunthorpe <jgg@...dia.com>
Subject: RE: [PATCH 0/2] Remove VT-d virtual command interface

> From: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Sent: Saturday, February 11, 2023 7:02 AM
> 
> Hi all,
> 
> This patch set removes unused VT-d virtual command interface followed by
> clean up in the IOASID code.
> 
> This has only been tested on x86 platforms, need help with testing on ARM
> SMMU and other architectures.
> 
> I also hope to collect feedback on the upcoming clean up and enhancements
> below:
> 1. Consolidate VT-d private SVA PASID array with IOASID common code
> 2. As we retain the global IOASID allocator, we need some level of resource
> management. I want to restart the effort to include IOASID under misc
> cgroup.
> (https://lore.kernel.org/linux-iommu/20210303160205.151d114e@jacob-
> builder/)
> 

this should go with adding global pasid allocator to iommufd.

before that we don't have such cgroup requirement.