linux-kernel - RE: [PATCH v4 2/7] iommu/vt-d: Remove identity mappings from si

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Message-ID: <BN9PR11MB527686792C84D6F7916096008CBA2@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Fri, 9 Aug 2024 08:23:26 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Lu Baolu <baolu.lu@...ux.intel.com>, Joerg Roedel <joro@...tes.org>, "Will
 Deacon" <will@...nel.org>, Robin Murphy <robin.murphy@....com>, "Jason
 Gunthorpe" <jgg@...pe.ca>
CC: "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Jason
 Gunthorpe" <jgg@...dia.com>
Subject: RE: [PATCH v4 2/7] iommu/vt-d: Remove identity mappings from
 si_domain

> From: Lu Baolu <baolu.lu@...ux.intel.com>
> Sent: Friday, August 9, 2024 1:54 PM
> 
> As the driver has enforced DMA domains for devices managed by an IOMMU
> hardware that doesn't support passthrough translation mode, there is no
> need for static identity mappings in the si_domain. Remove the identity
> mapping code to avoid dead code.
> 
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>

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