linux-kernel - RE: [PATCH v2 02/12] iommu/vt-d: Check if SVA is supported when attaching the SVA domain

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Message-ID: <BN9PR11MB5276E78387CFC8A42B70ABA58CC32@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Tue, 25 Feb 2025 07:23:47 +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: "Jiang, Dave" <dave.jiang@...el.com>, Vinod Koul <vkoul@...nel.org>,
	Fenghua Yu <fenghuay@...dia.com>, Zhangfei Gao <zhangfei.gao@...aro.org>,
	Zhou Wang <wangzhou1@...ilicon.com>, "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 v2 02/12] iommu/vt-d: Check if SVA is supported when
 attaching the SVA domain

> From: Lu Baolu <baolu.lu@...ux.intel.com>
> Sent: Monday, February 24, 2025 1:16 PM
> 
> From: Jason Gunthorpe <jgg@...dia.com>
> 
> Attach of a SVA domain should fail if SVA is not supported, move the check
> for SVA support out of IOMMU_DEV_FEAT_SVA and into attach.
> 
> Also check when allocating a SVA domain to match other drivers.
> 
> Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>

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