Appendix - Host OS Configuration
With Linux environment on host OS, additional kernel boot parameters may be required to support SNAP related features:
To use SR-IOV:
For Intel,
intel_iommu=on iommu=ptmust be addedFor AMD,
amd_iommu=on iommu=ptmust be added
To use PCIe hotplug,
pci=reallocmust be addedmodprobe.blacklist=virtio_blk,virtio_pcifor non-built-invirtio-blkdriver orvirtio-pcidriver
To view boot parameter values, run:
cat /proc/cmdline
It is recommended to use the following with virtio-blk:
[dpu] cat /proc/cmdline BOOT_IMAGE … pci=realloc modprobe.blacklist=virtio_blk,virtio_pci
To enable VFs (virtio_blk/NVMe):
echo 125 > /sys/bus/pci/devices/0000\:27\:00.4/sriov_numvfs
cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos1)/vmlinuz-5.15.0_mlnx root=UUID=91528e6a-b7d3-4e78-9d2e-9d5ad60e8273 ro crashkernel=auto resume=UUID=06ff0f35-0282-4812-894e-111ae8d76768 rhgb quiet iommu=pt intel_iommu=on pci=realloc modprobe.blacklist=virtio_blk,virtio_pci
cat /proc/cmdline
cat /proc/cmdline BOOT_IMAGE=(hd0,msdos1)/vmlinuz-5.15.0_mlnx root=UUID=91528e6a-b7d3-4e78-9d2e-9d5ad60e8273 ro crashkernel=auto resume=UUID=06ff0f35-0282-4812-894e-111ae8d76768 rhgb quiet iommu=pt amd_iommu=on pci=realloc modprobe.blacklist=virtio_blk,virtio_pci