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Subject: Re: [virtio-dev] [PATCH v3 0/7] Vhost-pci for inter-VM communication
On 12/05/2017 03:01 PM, Jason Wang wrote:
On 2017年12月05日 11:33, Wei Wang wrote:Vhost-pci is a point-to-point based inter-VM communication solution. This patch series implements the vhost-pci-net device setup and emulation. Thedevice is implemented as a virtio device, and it is set up via the vhost-user protocol to get the neessary info (e.g the memory info of the remote VM, vring info).Currently, only the fundamental functions are implemented. More features,such as MQ and live migration, will be updated in the future. The DPDK PMD of vhost-pci has been posted to the dpdk mailinglist here: http://dpdk.org/ml/archives/dev/2017-November/082615.html v2->v3 changes: 1) static device creation: instead of creating and hot-plugging the device when receiving a vhost-user msg, the device is not created via the qemu booting command line. 2) remove vqs: rq and ctrlq are removed in this version.- receive vq: the receive vq is not needed anymore. The PMD directly shares the remote txq and rxq - grab from remote txq toreceive packets, and put to rxq to send packets.- ctrlq: the ctrlq is replaced by the first 4KB metadata area of thedevice Bar-2. 3) simpler implementation: the entire implementation has been tailored from ~1800 LOC to ~850 LOC.Hi: Any performance numbers you can share?
Hi Jason,Performance testing and tuning on the data plane is in progress (btw, that wouldn't affect the device part patches).
If possible, could we start the device part patch review in the meantime? Best, Wei