Hi Joerg,
On 6/23/2022 1:45 PM, Joerg Roedel wrote:
> On Fri, Jun 03, 2022 at 04:51:00PM +0530, Vasant Hegde wrote:
>> - Part 1 (patch 1-4 and 6)
>> Refactor the current IOMMU page table code to adopt the generic IO page
>> table framework, and add AMD IOMMU Guest (v2) page table management code.
>>
>> - Part 2 (patch 5)
>> Add support for the AMD IOMMU Guest IO Protection feature (GIOV)
>> where requests from the I/O device without a PASID are treated as
>> if they have PASID of 0.
>>
>> - Part 3 (patch 7)
>> Introduce new "amd_iommu_pgtable" command-line to allow users
>> to select the mode of operation (v1 or v2).
>
> Something I didn't get entirely from the review is support level of the
> amd_iommu_v2 driver. I think it will continue to work and the
> requirement that the device identity maps DMA requests without PASID is
> removed, right?
Sorry. I didn't get last statement ("device identity maps DMA requests without
PASID").
Can you please elaborate?
-Vasant
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