linux-kernel - RE: [PATCH v7 1/4] iommu: Generalize PASID 0 for normal DMA w/o PASID

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Message-ID: <BN9PR11MB527657229485CA954EEFD7E38C469@BN9PR11MB5276.namprd11.prod.outlook.com>
Date:   Thu, 25 May 2023 06:25:14 +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>,
        Jason Gunthorpe <jgg@...dia.com>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        Robin Murphy <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "vkoul@...nel.org" <vkoul@...nel.org>
CC:     Will Deacon <will@...nel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        "Raj, Ashok" <ashok.raj@...el.com>,
        "Liu, Yi L" <yi.l.liu@...el.com>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        "Jiang, Dave" <dave.jiang@...el.com>,
        "Luck, Tony" <tony.luck@...el.com>,
        "Zanussi, Tom" <tom.zanussi@...el.com>,
        "Ranganathan, Narayan" <narayan.ranganathan@...el.com>
Subject: RE: [PATCH v7 1/4] iommu: Generalize PASID 0 for normal DMA w/o PASID

> From: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Sent: Wednesday, May 24, 2023 1:35 AM
>
> --- a/drivers/iommu/intel/pasid.h
> +++ b/drivers/iommu/intel/pasid.h
> @@ -10,7 +10,6 @@
>  #ifndef __INTEL_PASID_H
>  #define __INTEL_PASID_H
> 
> -#define PASID_RID2PASID			0x0
>  #define PASID_MIN			0x1

PASID_MIN is not used. could be removed too.

Reviewed-by: Kevin Tian <kevin.tian@...el.com>