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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: kvm@vger.kernel.org, maorg@nvidia.com,
	virtualization@lists.linux-foundation.org, jiri@nvidia.com,
	leonro@nvidia.com
Subject: Re: [PATCH vfio 11/11] vfio/virtio: Introduce a vfio driver over virtio devices
Date: Thu, 21 Sep 2023 15:17:25 -0400	[thread overview]
Message-ID: <20230921151325-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20230921183926.GV13733@nvidia.com>

On Thu, Sep 21, 2023 at 03:39:26PM -0300, Jason Gunthorpe wrote:
> > What is the huge amount of work am I asking to do?
> 
> You are asking us to invest in the complexity of VDPA through out
> (keep it working, keep it secure, invest time in deploying and
> debugging in the field)

I'm asking you to do nothing of the kind - I am saying that this code
will have to be duplicated in vdpa, and so I am asking what exactly is
missing to just keep it all there. So far you said iommufd and
note I didn't ask you to add iommufd to vdpa though that would be nice ;)
I just said I'll look into it in the next several days.

-- 
MST

_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization

WARNING: multiple messages have this Message-ID (diff)
From: "Michael S. Tsirkin" <mst@redhat.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Yishai Hadas <yishaih@nvidia.com>,
	alex.williamson@redhat.com, jasowang@redhat.com,
	kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	parav@nvidia.com, feliu@nvidia.com, jiri@nvidia.com,
	kevin.tian@intel.com, joao.m.martins@oracle.com,
	leonro@nvidia.com, maorg@nvidia.com
Subject: Re: [PATCH vfio 11/11] vfio/virtio: Introduce a vfio driver over virtio devices
Date: Thu, 21 Sep 2023 15:17:25 -0400	[thread overview]
Message-ID: <20230921151325-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20230921183926.GV13733@nvidia.com>

On Thu, Sep 21, 2023 at 03:39:26PM -0300, Jason Gunthorpe wrote:
> > What is the huge amount of work am I asking to do?
> 
> You are asking us to invest in the complexity of VDPA through out
> (keep it working, keep it secure, invest time in deploying and
> debugging in the field)

I'm asking you to do nothing of the kind - I am saying that this code
will have to be duplicated in vdpa, and so I am asking what exactly is
missing to just keep it all there. So far you said iommufd and
note I didn't ask you to add iommufd to vdpa though that would be nice ;)
I just said I'll look into it in the next several days.

-- 
MST


  parent reply	other threads:[~2023-09-21 19:17 UTC|newest]

Thread overview: 321+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-21 12:40 [PATCH vfio 00/11] Introduce a vfio driver over virtio devices Yishai Hadas via Virtualization
2023-09-21 12:40 ` Yishai Hadas
2023-09-21 12:40 ` [PATCH vfio 01/11] virtio-pci: Use virtio pci device layer vq info instead of generic one Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 13:46   ` Michael S. Tsirkin
2023-09-21 13:46     ` Michael S. Tsirkin
2023-09-26 19:13     ` Feng Liu via Virtualization
2023-09-26 19:13       ` Feng Liu
2023-09-27 18:09       ` Feng Liu via Virtualization
2023-09-27 18:09         ` Feng Liu
2023-09-27 21:24         ` Michael S. Tsirkin
2023-09-27 21:24           ` Michael S. Tsirkin
2023-09-21 12:40 ` [PATCH vfio 02/11] virtio: Define feature bit for administration virtqueue Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 12:40 ` [PATCH vfio 03/11] virtio-pci: Introduce admin virtqueue Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 13:57   ` Michael S. Tsirkin
2023-09-21 13:57     ` Michael S. Tsirkin
2023-09-26 19:23     ` Feng Liu via Virtualization
2023-09-26 19:23       ` Feng Liu
2023-09-27 18:12       ` Feng Liu via Virtualization
2023-09-27 18:12         ` Feng Liu
2023-09-27 21:27         ` Michael S. Tsirkin
2023-09-27 21:27           ` Michael S. Tsirkin
2023-10-02 18:07           ` Feng Liu via Virtualization
2023-10-02 18:07             ` Feng Liu
2023-09-21 12:40 ` [PATCH vfio 04/11] virtio: Expose the synchronous command helper function Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 12:40 ` [PATCH vfio 05/11] virtio-pci: Introduce admin command sending function Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 12:40 ` [PATCH vfio 06/11] virtio-pci: Introduce API to get PF virtio device from VF PCI device Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 12:40 ` [PATCH vfio 07/11] virtio-pci: Introduce admin commands Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-24  5:18   ` kernel test robot
2023-09-24  5:18     ` kernel test robot
2023-09-25  3:18   ` kernel test robot
2023-09-25  3:18     ` kernel test robot
2023-09-21 12:40 ` [PATCH vfio 08/11] vfio/pci: Expose vfio_pci_core_setup_barmap() Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 16:35   ` Alex Williamson
2023-09-21 16:35     ` Alex Williamson
2023-09-26  9:45     ` Yishai Hadas via Virtualization
2023-09-26  9:45       ` Yishai Hadas
2023-09-21 12:40 ` [PATCH vfio 09/11] vfio/pci: Expose vfio_pci_iowrite/read##size() Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 12:40 ` [PATCH vfio 10/11] vfio/virtio: Expose admin commands over virtio device Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 13:08   ` Michael S. Tsirkin
2023-09-21 13:08     ` Michael S. Tsirkin
2023-09-21 20:34   ` Michael S. Tsirkin
2023-09-21 20:34     ` Michael S. Tsirkin
2023-09-26 10:51     ` Yishai Hadas via Virtualization
2023-09-26 10:51       ` Yishai Hadas
2023-09-26 11:25       ` Michael S. Tsirkin
2023-09-26 11:25         ` Michael S. Tsirkin
2023-09-22  9:54   ` Michael S. Tsirkin
2023-09-22  9:54     ` Michael S. Tsirkin
2023-09-26 11:14     ` Yishai Hadas via Virtualization
2023-09-26 11:14       ` Yishai Hadas
2023-09-26 11:41       ` Michael S. Tsirkin
2023-09-26 11:41         ` Michael S. Tsirkin
2023-09-27 13:18         ` Jason Gunthorpe
2023-09-27 21:30           ` Michael S. Tsirkin
2023-09-27 21:30             ` Michael S. Tsirkin
2023-09-27 23:16             ` Jason Gunthorpe
2023-09-28  5:26               ` Michael S. Tsirkin
2023-09-28  5:26                 ` Michael S. Tsirkin
2023-10-02  6:28         ` Christoph Hellwig
2023-10-02  6:28           ` Christoph Hellwig
2023-10-02 15:13           ` Jason Gunthorpe
2023-10-05  8:49             ` Christoph Hellwig
2023-10-05  8:49               ` Christoph Hellwig
2023-10-05 11:10               ` Jason Gunthorpe
2023-10-06 13:09                 ` Christoph Hellwig
2023-10-06 13:09                   ` Christoph Hellwig
2023-10-10 13:10                   ` Jason Gunthorpe
2023-10-10 13:56                     ` Michael S. Tsirkin
2023-10-10 13:56                       ` Michael S. Tsirkin
2023-10-10 14:08                       ` Jason Gunthorpe
2023-10-10 14:54                         ` Michael S. Tsirkin
2023-10-10 14:54                           ` Michael S. Tsirkin
2023-10-10 15:09                           ` Yishai Hadas via Virtualization
2023-10-10 15:09                             ` Yishai Hadas
2023-10-10 15:14                             ` Michael S. Tsirkin
2023-10-10 15:14                               ` Michael S. Tsirkin
2023-10-10 15:43                               ` Yishai Hadas via Virtualization
2023-10-10 15:43                                 ` Yishai Hadas
2023-10-10 15:58                                 ` Parav Pandit via Virtualization
2023-10-10 15:58                                   ` Parav Pandit
2023-10-10 15:58                                 ` Michael S. Tsirkin
2023-10-10 15:58                                   ` Michael S. Tsirkin
2023-10-10 16:09                                   ` Yishai Hadas via Virtualization
2023-10-10 16:09                                     ` Yishai Hadas
2023-10-10 20:42                                     ` Michael S. Tsirkin
2023-10-10 20:42                                       ` Michael S. Tsirkin
2023-10-11  7:44                                       ` Yishai Hadas via Virtualization
2023-10-11  7:44                                         ` Yishai Hadas
2023-10-11  8:02                                         ` Michael S. Tsirkin
2023-10-11  8:02                                           ` Michael S. Tsirkin
2023-10-11  8:58                                           ` Yishai Hadas via Virtualization
2023-10-11  8:58                                             ` Yishai Hadas
2023-10-11  9:03                                             ` Michael S. Tsirkin
2023-10-11  9:03                                               ` Michael S. Tsirkin
2023-10-11 11:25                                               ` Yishai Hadas via Virtualization
2023-10-11 11:25                                                 ` Yishai Hadas
2023-10-11  6:12                                 ` Christoph Hellwig
2023-10-11  6:12                                   ` Christoph Hellwig
2023-10-10 15:59                               ` Jason Gunthorpe
2023-10-10 16:03                                 ` Michael S. Tsirkin
2023-10-10 16:03                                   ` Michael S. Tsirkin
2023-10-10 16:07                                   ` Jason Gunthorpe
2023-10-10 16:21                                     ` Parav Pandit via Virtualization
2023-10-10 16:21                                       ` Parav Pandit
2023-10-10 20:38                                       ` Michael S. Tsirkin
2023-10-10 20:38                                         ` Michael S. Tsirkin
2023-10-11  6:13                                 ` Christoph Hellwig
2023-10-11  6:13                                   ` Christoph Hellwig
2023-10-11  6:43                                   ` Michael S. Tsirkin
2023-10-11  6:43                                     ` Michael S. Tsirkin
2023-10-11  6:59                                     ` Christoph Hellwig
2023-10-11  6:59                                       ` Christoph Hellwig
2023-10-11  8:00                                       ` Parav Pandit via Virtualization
2023-10-11  8:00                                         ` Parav Pandit
2023-10-11  8:10                                         ` Michael S. Tsirkin
2023-10-11  8:10                                           ` Michael S. Tsirkin
2023-10-11 12:18                                           ` Jason Gunthorpe
2023-10-11 17:03                                             ` Michael S. Tsirkin
2023-10-11 17:03                                               ` Michael S. Tsirkin
2023-10-11 17:20                                               ` Jason Gunthorpe
2023-10-11 17:05                                             ` Michael S. Tsirkin
2023-10-11 17:05                                               ` Michael S. Tsirkin
2023-10-12 10:29                                         ` Zhu, Lingshan
2023-10-12 10:29                                           ` Zhu, Lingshan
2023-10-12 13:27                                           ` Jason Gunthorpe
2023-10-13 10:28                                             ` Zhu, Lingshan
2023-10-13 13:50                                               ` Michael S. Tsirkin
2023-10-13 13:50                                                 ` Michael S. Tsirkin
2023-10-16  8:33                                                 ` Zhu, Lingshan
2023-10-16  8:33                                                   ` Zhu, Lingshan
2023-10-16  8:52                                                   ` Michael S. Tsirkin
2023-10-16  8:52                                                     ` Michael S. Tsirkin
2023-10-16  9:53                                                     ` Zhu, Lingshan
2023-10-16  9:53                                                       ` Zhu, Lingshan
2023-10-11  8:12                                       ` Michael S. Tsirkin
2023-10-11  8:12                                         ` Michael S. Tsirkin
2023-10-12 10:30                                       ` Zhu, Lingshan
2023-10-12 10:30                                         ` Zhu, Lingshan
2023-10-11  6:26                     ` Christoph Hellwig
2023-10-11  6:26                       ` Christoph Hellwig
2023-10-11 13:57                       ` Jason Gunthorpe
2023-10-11 14:17                         ` Christoph Hellwig
2023-10-11 14:17                           ` Christoph Hellwig
2023-10-11 14:58                           ` Jason Gunthorpe
2023-10-11 16:59                             ` Michael S. Tsirkin
2023-10-11 16:59                               ` Michael S. Tsirkin
2023-10-11 17:19                               ` Jason Gunthorpe
2023-10-11 20:20                                 ` Michael S. Tsirkin
2023-10-11 20:20                                   ` Michael S. Tsirkin
2023-09-21 12:40 ` [PATCH vfio 11/11] vfio/virtio: Introduce a vfio driver over virtio devices Yishai Hadas via Virtualization
2023-09-21 12:40   ` Yishai Hadas
2023-09-21 13:16   ` Michael S. Tsirkin
2023-09-21 13:16     ` Michael S. Tsirkin
2023-09-21 14:11     ` Jason Gunthorpe
2023-09-21 14:16       ` Michael S. Tsirkin
2023-09-21 14:16         ` Michael S. Tsirkin
2023-09-21 16:41         ` Jason Gunthorpe
2023-09-21 16:53           ` Michael S. Tsirkin
2023-09-21 16:53             ` Michael S. Tsirkin
2023-09-21 18:39             ` Jason Gunthorpe
2023-09-21 19:13               ` Michael S. Tsirkin
2023-09-21 19:13                 ` Michael S. Tsirkin
2023-09-21 19:49                 ` Jason Gunthorpe
2023-09-21 20:45                   ` Michael S. Tsirkin
2023-09-21 20:45                     ` Michael S. Tsirkin
2023-09-21 22:55                     ` Jason Gunthorpe
2023-09-22  3:02                       ` Jason Wang
2023-09-22  3:02                         ` Jason Wang
2023-09-22 11:23                       ` Michael S. Tsirkin
2023-09-22 11:23                         ` Michael S. Tsirkin
2023-09-22 12:15                         ` Jason Gunthorpe
2023-09-22  3:01                   ` Jason Wang
2023-09-22  3:01                     ` Jason Wang
2023-09-22 12:11                     ` Jason Gunthorpe
2023-09-25  2:34                       ` Jason Wang
2023-09-25  2:34                         ` Jason Wang
2023-09-25 12:26                         ` Jason Gunthorpe
2023-09-25 19:44                           ` Michael S. Tsirkin
2023-09-25 19:44                             ` Michael S. Tsirkin
2023-09-26  0:40                             ` Jason Gunthorpe
2023-09-26  5:34                               ` Michael S. Tsirkin
2023-09-26  5:34                                 ` Michael S. Tsirkin
2023-09-26  5:42                               ` Michael S. Tsirkin
2023-09-26  5:42                                 ` Michael S. Tsirkin
2023-09-26 13:50                                 ` Jason Gunthorpe
2023-09-27 21:38                                   ` Michael S. Tsirkin
2023-09-27 21:38                                     ` Michael S. Tsirkin
2023-09-27 23:20                                     ` Jason Gunthorpe
2023-09-28  5:31                                       ` Michael S. Tsirkin
2023-09-28  5:31                                         ` Michael S. Tsirkin
2023-09-26  4:37                           ` Jason Wang
2023-09-26  4:37                             ` Jason Wang
2023-09-26  5:33                             ` Parav Pandit via Virtualization
2023-09-26  5:33                               ` Parav Pandit
2023-09-21 19:17               ` Michael S. Tsirkin [this message]
2023-09-21 19:17                 ` Michael S. Tsirkin
2023-09-21 19:51                 ` Jason Gunthorpe
2023-09-21 20:55                   ` Michael S. Tsirkin
2023-09-21 20:55                     ` Michael S. Tsirkin
2023-09-21 23:08                     ` Jason Gunthorpe
2023-09-25  4:44                     ` Zhu, Lingshan
2023-09-25  4:44                       ` Zhu, Lingshan
2023-09-22  3:45               ` Zhu, Lingshan
2023-09-22  3:45                 ` Zhu, Lingshan
2023-09-21 13:33   ` Michael S. Tsirkin
2023-09-21 13:33     ` Michael S. Tsirkin
2023-09-21 16:43   ` Alex Williamson
2023-09-21 16:43     ` Alex Williamson
2023-09-21 16:52     ` Jason Gunthorpe
2023-09-21 17:01       ` Michael S. Tsirkin
2023-09-21 17:01         ` Michael S. Tsirkin
2023-09-21 17:07         ` Jason Gunthorpe
2023-09-21 17:21           ` Michael S. Tsirkin
2023-09-21 17:21             ` Michael S. Tsirkin
2023-09-21 17:44             ` Jason Gunthorpe
2023-09-21 17:55               ` Michael S. Tsirkin
2023-09-21 17:55                 ` Michael S. Tsirkin
2023-09-21 18:16                 ` Jason Gunthorpe
2023-09-21 19:34                   ` Michael S. Tsirkin
2023-09-21 19:34                     ` Michael S. Tsirkin
2023-09-21 19:53                     ` Jason Gunthorpe
2023-09-21 20:16                       ` Michael S. Tsirkin
2023-09-21 20:16                         ` Michael S. Tsirkin
2023-09-21 22:48                         ` Jason Gunthorpe
2023-09-22  9:47                           ` Michael S. Tsirkin
2023-09-22  9:47                             ` Michael S. Tsirkin
2023-09-22 12:23                             ` Jason Gunthorpe
2023-09-22 15:45                               ` Michael S. Tsirkin
2023-09-22 15:45                                 ` Michael S. Tsirkin
2023-09-22  3:02                         ` Jason Wang
2023-09-22  3:02                           ` Jason Wang
2023-09-22 12:22                           ` Jason Gunthorpe
2023-09-22 12:25                             ` Parav Pandit via Virtualization
2023-09-22 12:25                               ` Parav Pandit
2023-09-22 15:13                               ` Michael S. Tsirkin
2023-09-22 15:13                                 ` Michael S. Tsirkin
2023-09-22 15:15                                 ` Jason Gunthorpe
2023-09-22 15:40                                   ` Michael S. Tsirkin
2023-09-22 15:40                                     ` Michael S. Tsirkin
2023-09-22 16:22                                     ` Jason Gunthorpe
2023-09-25 17:36                                       ` Michael S. Tsirkin
2023-09-25 17:36                                         ` Michael S. Tsirkin
2023-09-25  2:30                               ` Jason Wang
2023-09-25  2:30                                 ` Jason Wang
2023-09-25  8:26                                 ` Parav Pandit via Virtualization
2023-09-25  8:26                                   ` Parav Pandit
2023-09-25 18:36                                   ` Michael S. Tsirkin
2023-09-25 18:36                                     ` Michael S. Tsirkin
2023-09-26  2:34                                     ` Zhu, Lingshan
2023-09-26  2:34                                       ` Zhu, Lingshan
2023-09-26  3:45                                     ` Parav Pandit via Virtualization
2023-09-26  3:45                                       ` Parav Pandit
2023-09-26  4:37                                       ` Jason Wang
2023-09-26  4:37                                         ` Jason Wang
2023-10-12 10:52                                       ` Michael S. Tsirkin
2023-10-12 10:52                                         ` Michael S. Tsirkin
2023-10-12 11:11                                         ` Parav Pandit via Virtualization
2023-10-12 11:11                                           ` Parav Pandit
2023-10-12 11:30                                           ` Michael S. Tsirkin
2023-10-12 11:30                                             ` Michael S. Tsirkin
2023-10-12 11:40                                             ` Parav Pandit via Virtualization
2023-10-12 11:40                                               ` Parav Pandit
2023-09-26  2:32                                   ` Jason Wang
2023-09-26  2:32                                     ` Jason Wang
2023-09-26  4:01                                     ` Parav Pandit via Virtualization
2023-09-26  4:01                                       ` Parav Pandit
2023-09-26  4:37                                       ` Jason Wang
2023-09-26  4:37                                         ` Jason Wang
2023-09-26  5:27                                         ` Parav Pandit via Virtualization
2023-09-26  5:27                                           ` Parav Pandit
2023-09-26 11:49                                     ` Michael S. Tsirkin
2023-09-26 11:49                                       ` Michael S. Tsirkin
2023-10-08  4:28                                       ` Jason Wang
2023-10-08  4:28                                         ` Jason Wang
2023-09-22  3:02                       ` Jason Wang
2023-09-22  3:02                         ` Jason Wang
2023-09-22 12:25                         ` Jason Gunthorpe
2023-09-22 15:39                           ` Michael S. Tsirkin
2023-09-22 15:39                             ` Michael S. Tsirkin
2023-09-22 16:19                             ` Jason Gunthorpe
2023-09-25 18:16                               ` Michael S. Tsirkin
2023-09-25 18:16                                 ` Michael S. Tsirkin
2023-09-25 18:53                                 ` Jason Gunthorpe
2023-09-25 19:52                                   ` Michael S. Tsirkin
2023-09-25 19:52                                     ` Michael S. Tsirkin
2023-09-21 17:09         ` Parav Pandit via Virtualization
2023-09-21 17:09           ` Parav Pandit
2023-09-21 17:24           ` Michael S. Tsirkin
2023-09-21 17:24             ` Michael S. Tsirkin
2023-09-21 19:58   ` Alex Williamson
2023-09-21 19:58     ` Alex Williamson
2023-09-21 20:01     ` Jason Gunthorpe
2023-09-21 20:20       ` Michael S. Tsirkin
2023-09-21 20:20         ` Michael S. Tsirkin
2023-09-21 20:59         ` Alex Williamson
2023-09-21 20:59           ` Alex Williamson
2023-09-22 12:37     ` Jason Gunthorpe
2023-09-22 12:59       ` Parav Pandit via Virtualization
2023-09-22 12:59         ` Parav Pandit
2023-09-26 15:20     ` Yishai Hadas via Virtualization
2023-09-26 15:20       ` Yishai Hadas
2023-09-26 17:00       ` Michael S. Tsirkin
2023-09-26 17:00         ` Michael S. Tsirkin
2023-10-02  4:38         ` Parav Pandit via Virtualization
2023-10-02  4:38           ` Parav Pandit
2023-09-22 10:10   ` Michael S. Tsirkin
2023-09-22 10:10     ` Michael S. Tsirkin
2023-09-22 15:53   ` Michael S. Tsirkin
2023-09-22 15:53     ` Michael S. Tsirkin
2023-10-02 11:23     ` Parav Pandit via Virtualization
2023-10-02 11:23       ` Parav Pandit

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