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

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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

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





[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux