From: Jason Gunthorpe <jgg@nvidia.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>,
Yishai Hadas <yishaih@nvidia.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 16:53:45 -0300 [thread overview]
Message-ID: <20230921195345.GZ13733@nvidia.com> (raw)
In-Reply-To: <20230921152802-mutt-send-email-mst@kernel.org>
On Thu, Sep 21, 2023 at 03:34:03PM -0400, Michael S. Tsirkin wrote:
> that's easy/practical. If instead VDPA gives the same speed with just
> shadow vq then keeping this hack in vfio seems like less of a problem.
> Finally if VDPA is faster then maybe you will reconsider using it ;)
It is not all about the speed.
VDPA presents another large and complex software stack in the
hypervisor that can be eliminated by simply using VFIO. VFIO is
already required for other scenarios.
This is about reducing complexity, reducing attack surface and
increasing maintainability of the hypervisor environment.
Jason
next prev parent reply other threads:[~2023-09-21 20:11 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
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 [this message]
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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