linux-kernel - RE: [PATCH v1 06/12] iommufd/selftest: Implement mock_get_viommu_size and mock_viommu

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Message-ID: <BN9PR11MB52760F8C5A8B6331CE5588778C74A@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Thu, 12 Jun 2025 08:17:19 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Nicolin Chen <nicolinc@...dia.com>, "jgg@...dia.com" <jgg@...dia.com>
CC: "will@...nel.org" <will@...nel.org>, "robin.murphy@....com"
	<robin.murphy@....com>, "joro@...tes.org" <joro@...tes.org>,
	"ddutile@...hat.com" <ddutile@...hat.com>, "Liu, Yi L" <yi.l.liu@...el.com>,
	"peterz@...radead.org" <peterz@...radead.org>, "jsnitsel@...hat.com"
	<jsnitsel@...hat.com>, "praan@...gle.com" <praan@...gle.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "iommu@...ts.linux.dev"
	<iommu@...ts.linux.dev>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "patches@...ts.linux.dev"
	<patches@...ts.linux.dev>, "baolu.lu@...ux.intel.com"
	<baolu.lu@...ux.intel.com>
Subject: RE: [PATCH v1 06/12] iommufd/selftest: Implement mock_get_viommu_size
 and mock_viommu_init

> From: Nicolin Chen <nicolinc@...dia.com>
> Sent: Tuesday, June 10, 2025 1:13 AM
> 
> Sanitize the inputs and report the size of struct mock_viommu on success,
> in mock_get_viommu_size().
> 
> The core will ensure the viommu_type is set to the core vIOMMU object, so
> simply init the driver part in mock_viommu_init().
> 
> The mock_viommu_alloc() will be cleaned up once the transition is done.
> 
> Signed-off-by: Nicolin Chen <nicolinc@...dia.com>

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

btw I didn't see where mock_viommu->s2_parent is set in the original
code. Is it a bug or oversight?