Subject: Re: [PATCH net 2/9] net: hns3: add sync command to sync io-pgtable

From: Jakub Kicinski <[email-masked]>
Date: Tue, 15 Oct 2024 18:19:33 -0700

On Fri, 11 Oct 2024 17:45:14 +0800 Jijie Shao wrote:
> To avoid errors in pgtable prefectch, add a sync command to sync
> io-pagtable.

I've never seen net drivers call iommu_iotlb functions.
Could you provide more context on what this is doing and 
why such unusual handling is necessary?