netdev - Re: [RFC PATCH net-next v6 02/15] net: page_pool: create hooks for custom page providers

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Message-ID: <ZfjMopBl27-7asBc@infradead.org>
Date: Mon, 18 Mar 2024 16:22:10 -0700
From: Christoph Hellwig <hch@...radead.org>
To: David Wei <dw@...idwei.uk>
Cc: Christoph Hellwig <hch@...radead.org>,
	Mina Almasry <almasrymina@...gle.com>, netdev@...r.kernel.org,
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Subject: Re: [RFC PATCH net-next v6 02/15] net: page_pool: create hooks for
 custom page providers

On Sun, Mar 17, 2024 at 07:49:43PM -0700, David Wei wrote:
> I'm working on a similar proposal for zero copy Rx but to host memory
> and depend on this memory provider API.

How do you need a different provider for that vs just udmabuf?

> Jakub also designed this API for hugepages too IIRC. Basically there's
> going to be at least three fancy ways of providing pages (one of which
> isn't actually pages, hence the merged netmem_t series) to drivers.

How do hugepages different from a normal page allocation?  They should
just a different ordered passed to the page allocator.