linux-kernel - RE: [PATCH v5 04/13] iommufd/viommu: Add IOMMU_VIOMMU

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Message-ID: <BN9PR11MB5276918B39F18F4D51638EB38C4A2@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Mon, 28 Oct 2024 02:43:04 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Nicolin Chen <nicolinc@...dia.com>, "jgg@...dia.com" <jgg@...dia.com>,
	"will@...nel.org" <will@...nel.org>
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	"patches@...ts.linux.dev" <patches@...ts.linux.dev>
Subject: RE: [PATCH v5 04/13] iommufd/viommu: Add IOMMU_VIOMMU_ALLOC ioctl

> From: Nicolin Chen <nicolinc@...dia.com>
> Sent: Saturday, October 26, 2024 7:50 AM
> 
> Add a new ioctl for user space to do a vIOMMU allocation. It must be based
> on a nesting parent HWPT, so take its refcount.
> 
> IOMMU driver wanting to support vIOMMUs must define its
> IOMMU_VIOMMU_TYPE_
> in the uAPI header and implement a viommu_alloc op in its iommu_ops.
> 
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
> Signed-off-by: Nicolin Chen <nicolinc@...dia.com>

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