[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]
Subject: Re: [virtio-comment] [PATCH V3 RESEND 1/4] Introduce virito transport virtqueue
On 8/9/2022 5:37 PM, Jason Wang wrote:
On Tue, Aug 9, 2022 at 5:35 PM Michael S. Tsirkin <mst@redhat.com> wrote:On Tue, Aug 09, 2022 at 05:31:32PM +0800, Jason Wang wrote:On Tue, Aug 9, 2022 at 5:28 PM Zhu, Lingshan <lingshan.zhu@intel.com> wrote:On 8/9/2022 5:21 PM, Jason Wang wrote:On Tue, Aug 9, 2022 at 5:19 PM Zhu, Lingshan <lingshan.zhu@intel.com> wrote:On 8/9/2022 5:12 PM, Michael S. Tsirkin wrote:On Tue, Aug 09, 2022 at 04:36:43PM +0800, Zhu, Lingshan wrote:+ +A device that offers feature bit VIRTIO_F_TRANSPT_VQ and a transport virtqueue is a management device. +It processes the commands through the transport virtqueue commands.I think we need to be verbose here, e.g what did those transport virtqueue commands do? What's the relationship between management device and managed device?I will add an overview of the transport virtqueue commands here, and a description of the relationship in the "managed device" section.Transport is fine but management of devices is clearly something nvidia's patches do. So I think it's best to reuse the concept of device groups for this, from Max's patchset. Let's not replicate that work at least. I promised Max to help a bit with wording so I'll soon send a revision of his patchset, the generic part about device group from which you should be able to reuse.Of course, it is possible to add the device groups in this series for sure. What I don't understand is: what kind of commands against a device group? Destroy all? And normally a parent device only support one kind of devices, like a SRIOV capable virtio-net PF only supports virtio-net VFs on it, and maybe there will not be a device support both SIOV and SRIOV, it is complex in the HW implementation.For having backward compatibility? (E.g for platforms that don't support SIOV) ThanksIf not a device model like SIOV which does not have a dedicated physical transport layer, the question would be: Why do we need a side channel for a VF? This looks conflicts with VF provisioning and virtio-spec definitions. E.g, why allow changing MSI in the flight outside the guest control?Just to clarify my points. I meant that vendors may choose to implement both SRIOV and SIOV in the hardware. And I believe this is what most vendor will do. But it doesn't mean the control path needs to be shared. ThanksOkay. But I feel some general structure and terminology should be shared, given the similarity.Yes, I agree.
Yes, it looks we all want to control sub-devices from the parent device Thanks, Zhu Lingshan
ThanksThanks, Zhu LingshanThanks, Zhu LingshanThis publicly archived list offers a means to provide input to the OASIS Virtual I/O Device (VIRTIO) TC. In order to verify user consent to the Feedback License terms and to minimize spam in the list archive, subscription is required before posting. Subscribe: virtio-comment-subscribe@lists.oasis-open.org Unsubscribe: virtio-comment-unsubscribe@lists.oasis-open.org List help: virtio-comment-help@lists.oasis-open.org List archive: https://lists.oasis-open.org/archives/virtio-comment/ Feedback License: https://www.oasis-open.org/who/ipr/feedback_license.pdf List Guidelines: https://www.oasis-open.org/policies-guidelines/mailing-lists Committee: https://www.oasis-open.org/committees/virtio/ Join OASIS: https://www.oasis-open.org/join/
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]