On 26/08/2024 21:25, Jan Kiszka wrote:

On 26.08.24 20:53, Krzysztof Kozlowski wrote:

quoted

On 26/08/2024 19:56, Jan Kiszka wrote:

quoted

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.

You send it to addresses you CANNOT get from mainline kernel. There is
no way mainline kernel get_maintainers.pl produces them.

Best regards,
Krzysztof