linux-kernel - Re: [PATCH 0/3][RFC] virtio-blk: add io_uring passthrough support for virtio-blk

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Message-ID: <Z2BNHWFWgLjEMiAn@infradead.org>
Date: Mon, 16 Dec 2024 07:54:05 -0800
From: Christoph Hellwig <hch@...radead.org>
To: Ferry Meng <mengferry@...ux.alibaba.com>
Cc: "Michael S . Tsirkin" <mst@...hat.com>,
	Jason Wang <jasowang@...hat.com>, linux-block@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>, virtualization@...ts.linux.dev,
	linux-kernel@...r.kernel.org, io-uring@...r.kernel.org,
	Joseph Qi <joseph.qi@...ux.alibaba.com>,
	Jeffle Xu <jefflexu@...ux.alibaba.com>
Subject: Re: [PATCH 0/3][RFC] virtio-blk: add io_uring passthrough support
 for virtio-blk

Hacking passthrough into virtio_blk seems like not very good layering.
If you have a use case where you want to use the core kernel virtio code
but not the protocol drivers we'll probably need a virtqueue passthrough
option of some kind.