DPDK、数据平面开发包(NFV) UNVMe、用户态nvme驱动 rVFIO、Ruby封装的VFIO VFIO的基本思想包括两个部分, 第一是将物理设备的各种资源分解,并将获取这些资源的接口向上导出到用户空间,QEMU等应用层软件可以利用这些接口获取硬件的所有资源,包括设备的配置空间、BAR空间和中断。 第二就是聚合,也就是将从硬件设备得到的...
专利权项:1.一种基于VFIO-User协议的自动重协商方法,其特征在于,包括:S1,响应用户向QEMU虚机挂载新的VFIO-User盘;响应用户使用SPDKunixsocket,向QEMU虚机挂载新的VFIO-User盘;S2,通过所述QEMU虚机进行设备初始化;通过QEMU虚机进行设备初始化,针对新连接,通过eventfd监听连接状态,并保存向SPDK的注册数据,告知SPDK该连接...
1 mdev in VFIO 2 VFIO mdev框架 3 MDev-NVMe:A NVMe Storage Virtualization Solution with Mediated Pass-Through 4 Hardware-Assisted-Mediated-Pass-Through-with-VFIO-Kevin-Tian-Intel 5 A Full GPU Virtual…
vfio是用户态和内核态之间的一种接口,类似于vhost和vhost-user,具体用法就是vfio.ko通过/dev/vfio在内核给用户态提供api,qemu或者dpdk用api和内核模块交互。 vfio-pci是内核驱动,网卡和NVME盘等设备就可以使用这个驱动,使用vfio-pci就会调用到vfio-pci的probe。vfio-pci用于标准的pci设备,如果多个虚拟机想用这个pci...
The VFIO userspace API A few VFIO code examples: VFIO tests A userspace NVME driver based on VFIO crosvm VFIO initial implementation Debugging VFIO kernel traces: $ trace-cmd record -p function_graph -l vfio_* $ trace-cmd report KVM events and functions: ...
net-pci,netdev=net0-netdev user,id=net0,hostfwd=tcp::3389-:3389,hostfwd=tcp::5900-:5900-drive 'file=fedora.img,if=none,id=drive-scsi0,format=raw,cache=writeback,aio=io_uring,detect-zeroes=on,discard=unmap'-device nvme,serial=deadbeef,drive=drive-scsi0###-device pcie-root-port,bus...
To show disk IDs if using multiple disks:virsh qemu-monitor-command --hmp 1 "info qtree"(Replace 1 with VM name)https://blog.christophersmart.com/2019/12/18/kvm-guests-with-emulated-ssd-and-nvme-drives/ <qemu:commandline> <qemu:argvalue='-set'/> ...
Investigate running as a non-privileged user with vfio. This requires VT-d and the IOMMU enabled on a system. The expectation is that this just works and only needs to be documented, but it may require a few script updates. Running with ...
SPDK中Nvme_target发展时间线: 2016年支持nvmf_target(仅支持RDMA) 2020年支持vfio-user传输层(软件仿真Nvme盘) SPDK IPU K8S结合: VFIO-USER简介 VFIO-USER 是一种协议,允许在虚拟机监视器 (VMM) 之外的单独进程中模拟设备。 ▪ VFIO-USER 规范主要基于 Linux VFIO ioctl 接口,以将其实现为通过 UNIX 域套...
[6] Storage Performance Development Kit,http://www.spdk.io/doc/userspace.html [7] DOC(getting started)http://www.spdk.io/doc/getting_started.html [8] Accelerate Your NVMe Drives with SPDK,https://software.intel.com/en-us/articles/accelerating-your-nvme-drives-with-spdk ...