netdev - Re: [PATCH net-next v10 02/14] net: page_pool: create hooks for custom page providers

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Date: Mon, 10 Jun 2024 23:25:05 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Christian König <christian.koenig@....com>
Cc: Jason Gunthorpe <jgg@...pe.ca>, Pavel Begunkov <asml.silence@...il.com>,
	David Wei <dw@...idwei.uk>, David Ahern <dsahern@...nel.org>,
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	Praveen Kaligineedi <pkaligineedi@...gle.com>
Subject: Re: [PATCH net-next v10 02/14] net: page_pool: create hooks for
 custom page providers

On Mon, Jun 10, 2024 at 02:38:18PM +0200, Christian König wrote:
> Well there is the fundamental problem that you can't use io_uring to
> implement the semantics necessary for a dma_fence.

What is the exact problem there?