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Message-ID: <ZudNNz0O9NMDjHXW@nvidia.com>
Date: Sun, 15 Sep 2024 18:10:15 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Nicolin Chen <nicolinc@...dia.com>
Cc: Baolu Lu <baolu.lu@...ux.intel.com>, kevin.tian@...el.com,
	will@...nel.org, joro@...tes.org, suravee.suthikulpanit@....com,
	robin.murphy@....com, dwmw2@...radead.org, shuah@...nel.org,
	linux-kernel@...r.kernel.org, iommu@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kselftest@...r.kernel.org, eric.auger@...hat.com,
	jean-philippe@...aro.org, mdf@...nel.org, mshavit@...gle.com,
	shameerali.kolothum.thodi@...wei.com, smostafa@...gle.com,
	yi.l.liu@...el.com
Subject: Re: [PATCH v2 02/19] iommufd/viommu: Add IOMMUFD_OBJ_VIOMMU and
 IOMMU_VIOMMU_ALLOC ioctl

On Wed, Sep 11, 2024 at 08:39:57PM -0700, Nicolin Chen wrote:

> You mentioned that actually only the iommufd selftest might hit such
> a corner case, so perhaps we should do something in the selftest code
> v.s. the iommu core. What do you think?

Maybe, if there were viommu allocation callbacks maybe those can pin
the memory in the selftest..

Jason

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