search for: force_isol

Displaying 1 result from an estimated 1 matches for "force_isol".

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. Referen...