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Date: Tue, 15 Oct 2024 18:19:33 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Jijie Shao <shaojijie@huawei.com>
Cc: <davem@davemloft.net>, <edumazet@google.com>, <pabeni@redhat.com>,
 <shenjian15@huawei.com>, <salil.mehta@huawei.com>,
 <liuyonglong@huawei.com>, <wangpeiyang1@huawei.com>, <lanhao@huawei.com>,
 <chenhao418@huawei.com>, <netdev@vger.kernel.org>,
 <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH net 2/9] net: hns3: add sync command to sync io-pgtable
Message-ID: <20241015181933.3e7afbe3@kernel.org>
In-Reply-To: <20241011094521.3008298-3-shaojijie@huawei.com>
References: <20241011094521.3008298-1-shaojijie@huawei.com>
	<20241011094521.3008298-3-shaojijie@huawei.com>
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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?