On 10/08/18 11:01 AM, Dave Jiang wrote: > Or if the BIOS has provided mapping for the Intel NTB device > specifically? Is that a possibility? NTB does go through the IOMMU. I don't know but if the BIOS is doing it, but that would only at best work for Intel NTB.... I see no hope in getting the BIOS to map the MW for a Switchtec NTB device... Logan