linux-kernel - Re: [PATCH v4 4/8] iommufd/selftest: Put iopf enablement in domain attach path

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Message-ID: <04f59a31-f81c-4915-9558-0e3abc647d64@intel.com>
Date: Tue, 18 Mar 2025 18:25:13 +0800
From: Yi Liu <yi.l.liu@...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>, Kevin Tian <kevin.tian@...el.com>
CC: Dave Jiang <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>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 4/8] iommufd/selftest: Put iopf enablement in domain
 attach path

On 2025/3/13 13:19, Lu Baolu wrote:
> Update iopf enablement in the iommufd mock device driver to use the new
> method, similar to the arm-smmu-v3 driver. Enable iopf support when any
> domain with an iopf_handler is attached, and disable it when the domain
> is removed.
> 
> Add a refcount in the mock device state structure to keep track of the
> number of domains set to the device and PASIDs that require iopf.
> 
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> Reviewed-by: Kevin Tian <kevin.tian@...el.com>
> Tested-by: Zhangfei Gao <zhangfei.gao@...aro.org>
> ---
>   drivers/iommu/iommufd/selftest.c | 64 ++++++++++++++++++++++++++------
>   1 file changed, 53 insertions(+), 11 deletions(-)

Reviewed-by: Yi Liu <yi.l.liu@...el.com>

Regards,
Yi Liu