linux-kernel - Re: [PATCH 1/2] iommu/vt-d: Remove virtual command interface

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Date:   Mon, 13 Feb 2023 19:19:35 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, 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>,
        David Woodhouse <dwmw2@...radead.org>,
        Raj Ashok <ashok.raj@...el.com>,
        "Tian, Kevin" <kevin.tian@...el.com>, Yi Liu <yi.l.liu@...el.com>
Subject: Re: [PATCH 1/2] iommu/vt-d: Remove virtual command interface

On Fri, Feb 10, 2023 at 03:02:05PM -0800, Jacob Pan wrote:
> Virtual command interface was introduced to allow using host PASIDs
> inside VMs. It is unused and abandoned due to architectural change.
> 
> With this patch, we can safely remove this feature and the related helpers.
> 
> Signed-off-by: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> ---
>  drivers/iommu/intel/cap_audit.c |  2 -
>  drivers/iommu/intel/dmar.c      |  2 -
>  drivers/iommu/intel/iommu.c     | 85 ---------------------------------
>  drivers/iommu/intel/iommu.h     |  8 ----
>  4 files changed, 97 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason