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dl380g1
2020 Jun 30
1
Do we need "amd_iommu=on" for AMD system anymore?
..._iommu=on", and it may be outdated:
http://dpdk-guide.gitlab.io/dpdk-guide/setup/iommu.html
2. On AMD system without adding "amd_iommu=on" in the kernel cmdline, the
iommu is enabled:
# cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos1)/vmlinuz-4.18.0-193.el8.x86_64
root=/dev/mapper/rhel_hp--dl385g10--16-root ro crashkernel=auto
resume=/dev/mapper/rhel_hp--dl385g10--16-swap
rd.lvm.lv=rhel_hp-dl385g10-16/root
rd.lvm.lv=rhel_hp-dl385g10-16/swap console=ttyS0,115200n81
# dmesg | grep -i iommu
[ 3.712029] iommu: Default domain type: Passthrough
[ 6.736019] pci 0000:00:00.2: IOMMU performance...