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On 05/15/2017 10:59 PM, Taiidan@×××.com wrote: |
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> On 05/15/2017 12:58 AM, Ian Zimmerman wrote: |
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> |
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>>> The 990FX / 790FX Chipset doesn't have a GART / AGP Aperature or IOMMU |
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>>> in it. The CPU contains the original K8 IOMMU ( v1 ) engineered / |
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>>> converted from a GART. |
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>>> |
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> The 8 and 9 series (not 7) does have an IOMMU, AMD-Vi v1.26. |
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> |
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> I have two 890 series (but the server flavor - SR5690 chipset) boards |
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> with an IOMMU and it works great, I play games in a VM with an |
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> attached graphics card on my libre firmware KGPE-D16 and devices are |
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> DMA restricted. |
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> |
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> Most consumer boards don't properly implement this feature, in fact I |
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> have never seen one that did which is why I bought my coreboot (libre |
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> init variant) D16. |
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> It wouldn't be that difficult to port coreboot to your board if you |
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> want this to work FYI. |
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> |
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> |
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To be clear, it is present on the northbridge chipset not the CPU - AMD |
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documentation backs this up. |
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