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Subject: Re: [virtio-dev] [PATCH v3 0/4] introduce virtio vhost-user backend device type
On 21/6/19 11:43 Î.Î., Michael S. Tsirkin wrote: > On Wed, Jun 19, 2019 at 03:54:30PM +0100, Stefan Hajnoczi wrote: >> On Sat, May 11, 2019 at 09:47:36PM +0300, Nikos Dragazis wrote: >>> Hi everyone, >>> >>> this PATCH presents an updated version of the RFC virtio device spec for >>> the virtio-vhost-user device. The initial RFC implementation can be >>> found here: [1]. >>> >>> This PATCH is split into four parts: >>> >>> 1. the first commit is just a refactored version of the initial RFC >>> implementation [1]. I just moved the device spec into a separate .tex >>> file and changed the device id from #24 to #28 since the ids #24-#27 are >>> reserved. >>> >>> 2. the second commit fixes some minor issues with the device spec. This >>> is quite straightforward. >>> >>> 3. the third commit enhances the notification capability with some >>> device/driver requirements. This makes sense because the notification >>> capability behaves similarly to the MSI-X capability, thereby having >>> some requirements that need to be mentioned. >>> >>> 4. the fourth commit synchronizes the shared memory capability with a >>> recent patch [2] that attempts to standardize a standalone >>> SHARED_MEMORY_CFG virtio capability. >>> >>> v3 changes: >>> * Device Requirements for the Notification Capability: point out the >>> difference between the MSI-X Table Size stored in the Message Control >>> register of the MSI-X capability structure and the actual MSI-X Table >>> Size >>> >>> v2 changes: >>> * Change device id from #25 to #28 >>> >>> Looking forward to your comments. >> I'm happy with v3. >> >> Any other comments or shall we proceed to a vote? >> >> Stefan > I think we need to wait for shared memory part to be finalized, right? > Michael, given that David's patchset for the shared memory regions has been approved, I think we can start discussing on the spec for the virtio-vhost-user device. A link to the latest version is here: [1]. I really think that this device is useful and should be part of the VIRTIO specification. I will submit a fifth version of the patchset soon with some minor changes that seem reasonable to me. Best regards, Nikos [1] https://lists.oasis-open.org/archives/virtio-dev/201906/msg00036.html
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