linux-kernel - Re: [RFC 0/6] Add multiple address spaces support to VDUSE

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Message-ID: <CAJaqyWek+ckdXFZdhpcXwDB7a5X=PMSktEADVpR5Nbi-n+MR0w@mail.gmail.com>
Date: Fri, 20 Jun 2025 08:25:50 +0200
From: Eugenio Perez Martin <eperezma@...hat.com>
To: Christoph Hellwig <hch@...radead.org>
Cc: jasowang@...hat.com, Yongji Xie <xieyongji@...edance.com>, 
	Cindy Lu <lulu@...hat.com>, linux-kernel@...r.kernel.org, 
	Stefano Garzarella <sgarzare@...hat.com>, Stefan Hajnoczi <stefanha@...hat.com>, 
	Maxime Coquelin <mcoqueli@...hat.com>, "Michael S. Tsirkin" <mst@...hat.com>, virtualization@...ts.linux.dev, 
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Laurent Vivier <lvivier@...hat.com>
Subject: Re: [RFC 0/6] Add multiple address spaces support to VDUSE

On Mon, Jun 9, 2025 at 7:51 AM Christoph Hellwig <hch@...radead.org> wrote:
>
> Before you add new features to vduse, please remove the broken abuse of
> the DMA API first.  Without that no new feature work should go into
> this code.
>

Hi Christoph,

This code does not touch the DMA API at all. Actually, we could even
remove all the DMA code and these changes would work the same. Can't
we just continue with this series and remove the abuse of the DMA API
in parallel?

If you detect broken uses of the DMA API I've missed please let me
know and I'll be happy to remove or change them.

Thanks!