linux-kernel - RE: [PATCH rc] iommu/sva: Fix SVA handle sharing in multi device case

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Date: Tue, 27 Feb 2024 07:42:30 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Zhangfei Gao <zhangfei.gao@...aro.org>, Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>, jean-philippe <jean-philippe@...aro.org>,
	Jason Gunthorpe <jgg@...dia.com>, "baolu.lu@...ux.intel.com"
	<baolu.lu@...ux.intel.com>, "Zhang, Tina" <tina.zhang@...el.com>
CC: "iommu@...ts.linux.dev" <iommu@...ts.linux.dev>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH rc] iommu/sva: Fix SVA handle sharing in multi device case

> From: Zhangfei Gao <zhangfei.gao@...aro.org>
> Sent: Tuesday, February 27, 2024 2:48 PM
> 
> iommu_sva_bind_device will directly goto out in multi-device
> case when found existing domain, ignoring list_add handle,
> which causes the handle to fail to be shared.
> 
> Fixes: 65d4418c5002 ("iommu/sva: Restore SVA handle sharing")
> Signed-off-by: Zhangfei Gao <zhangfei.gao@...aro.org>
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

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