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I am writing a C program that periodically loads/unloads a dynamic library. The dynamic library performs network operations using DPDK, and in my setup, it relies on the VFIO framework. This is a ...
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242 views

I am using a Mellanox ConnectX-5 MCX516A-CCAT card and trying to achieve 100G Ethernet data transmission between a client PC and an SoC board. I have installed the Mellanox drivers and DPDK, and I ...
이지나's user avatar
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1 answer
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I enabled VFIO's noiommu mode, and after binding the device to the VFIO driver, I see noiommu-0 under /dev/vfio/. Then, I try to pass the device through to a VM on QEMU, but QEMU throws an error ...
Kai Xu's user avatar
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4 answers
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I've read that, in order to use DPDK (in my case, with the AWS ENA poll-mode driver, developed by AWS as part of DPDK) for a kernel-bypass networking application, you need to either have an IOMMU ...
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1 answer
267 views

As part of learning about FPGA design have some boards with Xilinx Kintex-7 or Artix-7 FPGAs where the FPGAs have a PCIe connection to the PC they are installed in. The FPGA designs expose a PCIe ...
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1 answer
698 views

I am currently writing a userspace driver to interface with an Altera PCIe card. My goal is to reduce max interrupt latency as much as possible. I am currently using VFIO_DEVICE_SET_IRQS ioctl to ...
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I am new to DPDK and QDMA. I am using alveo u200 with OpenNIC. I have bind the interface with VFIO-PCI driver. While executing Pktgen/TestPMD Application I am getting "Packet Length mismatch ...
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2 answers
526 views

I am trying to open file /dev/vfio/noiommu-0 with read and write access (O_RDWR), but the error occurs. char* filename = "/dev/vfio/noiommu-0"; int fd = open(filename, O_RDWR); if (fd < 0)...
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1 answer
452 views

I am testing DPDK TestPMD application in Avleo u200. I am executing below commands dpdk-20.11]$ sudo ./usertools/dpdk-devbind.py -b vfio-pci 08:00.0 08:00.1 dpdk-20.11]$ sudo ./build/app/dpdk-testpmd ...
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So I have one process running on a host machine that creates a shared memory region. This shared memory region is then passed to a process running in a guest VM. The shared memory region gets exposed ...
MUAS's user avatar
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2 votes
1 answer
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I am using dpdk to do user space network IO. But I cannot bind eth0 to vfio-pci. My environment vmware workstation 17 pro Ubuntu 20.04 DPDK 20.11.3 What I have done setup two network card: eht0 (...
Chunhao Xie's user avatar
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I am using the following code to test a PCIe BAR register write through VFIO_PCI APIs. ` struct vfio_group_status group_status = { .argsz = sizeof(group_status) }; struct vfio_device_info ...
Clark's user avatar
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I am using aarch64 Linux to test VFIO-IOMMU feature in KVM VM. The host is cortex-A78 running Linux-5.10.104 (with VFIO_IOMMU enabled). The guest OS is Ubuntu-22.04 (Linux-5.15, also with VFIO_IOMMU ...
wangt13's user avatar
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2 answers
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I'm trying to map an FPGA on the PCI-e bus using the vfio-pci driver. I can read registers correctly but, when I try to write registers, it seems that a register is written and I can read it back, but,...
2 votes
0 answers
500 views

Good morning all, I'd want to attach to vfio driver at boot my secondary sata controller in a manjaro os (kernel 5.16.7). Usually, I add the devices in /etc/modprobe.d/vfio.conf, for example: options ...
Daniele's user avatar
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