linux-kernel - RE: [PATCH v5 06/13] iommu: Add iommu_copy_struct_from_full_user

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Message-ID: <BN9PR11MB5276B02140C9F5021622CB388C4B2@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Tue, 29 Oct 2024 08:24:52 +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 06/13] iommu: Add
 iommu_copy_struct_from_full_user_array helper

> From: Nicolin Chen <nicolinc@...dia.com>
> Sent: Saturday, October 26, 2024 7:51 AM
> 
> From: Jason Gunthorpe <jgg@...dia.com>
> 
> The iommu_copy_struct_from_user_array helper can be used to copy a
> single
> entry from a user array which might not be efficient if the array is big.
> 
> Add a new iommu_copy_struct_from_full_user_array to copy the entire user
> array at once. Update the existing iommu_copy_struct_from_user_array
> kdoc
> accordingly.

what about:

iommu_copy_struct_from_user_array_single()
iommu_copy_struct_from_user_array_full()

?

> 
> Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
> Signed-off-by: Nicolin Chen <nicolinc@...dia.com>

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