Re: [PATCH 0/5] soc: ti: Add and use PVU on K3-AM65 for DMA isolation

[Jan Kiszka]

On 26.08.24 20:53, Krzysztof Kozlowski wrote:
> On 26/08/2024 19:56, Jan Kiszka wrote:
>> Only few of the K3 SoCs have an IOMMU and, thus, can isolate the system
>> against DMA-based attacks of external PCI devices. The AM65 is without
>> an IOMMU, but it comes with something close to it: the Peripheral
>> Virtualization Unit (PVU).
>>
>> The PVU was originally designed to establish static compartments via a
>> hypervisor, isolate those DMA-wise against each other and the host and
>> even allow remapping of guest-physical addresses. But it only provides
>> a static translation region, not page-granular mappings. Thus, it cannot
>> be handled transparently like an IOMMU.
> 
> You keep developing on some old kernel. I noticed it on few patchsets
> last days. Please work on mainline.
> 

How did you come to this conclusion? This patch set was written for
mainline, just rebased and tested again over next-20240826 before
sending today.

Jan

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