Displaying 1 result from an estimated 1 matches for "force_isolation".
2020 Jun 30
1
Do we need "amd_iommu=on" for AMD system anymore?
...do this action, IOMMU is still enabled
by kernel on AMD system.
After searching, I found there is no such setting any more, refer to
https://github.com/torvalds/linux/blob/master/Documentation/admin-guide/kernel-parameters.txt#L286
There are only 3 possible value as below:
amd_iommu= fullflush
off
force_isolation
Could anyone can help to confirm the changes? Thank you!
And another question, it is said that the "iommu=pt" option is to improves
IO performance for devices in the host, it is not a must for VF PCI
passthrough, right?
I'm not sure about the user cases.
[Reference]
1. Reference ab...