Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device

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Subject: Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
From: Jason Gunthorpe <jgg@xxxxxxxxxx>
Date: Thu, 12 Oct 2023 10:27:49 -0300
Cc: Parav Pandit <parav@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxxxxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, "kvm@xxxxxxxxxxxxxxx" <kvm@xxxxxxxxxxxxxxx>, Maor Gottlieb <maorg@xxxxxxxxxx>, "virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx" <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Jiri Pirko <jiri@xxxxxxxxxx>, Leon Romanovsky <leonro@xxxxxxxxxx>
In-reply-to: <c75bb669-76fe-ef12-817e-2a8b5f0b317b@intel.com>
References: <20231010140849.GL3952@nvidia.com> <20231010105339-mutt-send-email-mst@kernel.org> <e979dfa2-0733-7f0f-dd17-49ed89ef6c40@nvidia.com> <20231010111339-mutt-send-email-mst@kernel.org> <20231010155937.GN3952@nvidia.com> <ZSY9Cv5/e3nfA7ux@infradead.org> <20231011021454-mutt-send-email-mst@kernel.org> <ZSZHzs38Q3oqyn+Q@infradead.org> <PH0PR12MB5481336B395F38E875ED11D8DCCCA@PH0PR12MB5481.namprd12.prod.outlook.com> <c75bb669-76fe-ef12-817e-2a8b5f0b317b@intel.com>

On Thu, Oct 12, 2023 at 06:29:47PM +0800, Zhu, Lingshan wrote:

> sorry for the late reply, we have discussed this for weeks in virtio mailing
> list. I have proposed a live migration solution which is a config space solution.

I'm sorry that can't be a serious proposal - config space can't do
DMA, it is not suitable.

Jason

References:
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Jason Gunthorpe
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Michael S. Tsirkin
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Yishai Hadas
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Michael S. Tsirkin
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Jason Gunthorpe
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Christoph Hellwig
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Michael S. Tsirkin
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Christoph Hellwig
- RE: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Parav Pandit
- Re: [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device
  - From: Zhu, Lingshan

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