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AMD SVM Enabled but IOMMU reporting as disabled

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Hi everyone, I am about a day old to using unraid, and I have to say I have been delighted with how I have been able to get things started, although I am not especially technical.


I have been able to create a Windows VM and I have been happy with it, but I want to start hardware passing through and I saw that I needed to enable IOMMU.


So I went into the Bios and confirmed that SVM was enabled, but when I went back to info it is still indicating as below that IOMMU is disabled.

This is my config and I was wondering if there was anything really obvious that would show that the hardware in incompatible with IOMMU.


Model: Custom

M/B: ASRock X570M Pro4 Version - s/n: 

BIOS: American Megatrends Inc. Version P1.50. Dated: 07/15/2019

CPU: AMD Ryzen 7 3700X 8-Core @ 3600 MHz

HVM: Enabled

IOMMU: Disabled

Cache: 512 KiB, 4096 KiB, 32768 KiB

Memory: 16 GiB DDR4 (max. installable capacity 128 GiB) ( Ballistix Sport LT Gray 16GB (2 x 8GB) DDR4-3200 UDIMM)


Kernel: Linux 4.19.94-Unraid x86_64


Again I am not especially technical so I apologise in advance if I have asked anything stupid.

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SVM just enables the virtualization features of the CPU itself.  You're looking for an IOMMU option probably buried somewhere within Advanced in the BIOS

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Just a quick follow up. Found it in the end.

Just in case anyone else wants to know and they own a ASRock Mobo


Advanced --> AMD CBS --> NBIO --> there should be an Option for IOMMU.

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