On Wed, 08 Jan 2025 10:48:14 -0600, Gaurav Batra wrote:
> Starting with PAPR level 2.13, platform supports placing PHB in limited
> address mode. Devices that support DMA masks less that 64-bit but greater
> than 32-bits are placed in limited address mode. In this mode, the
> starting DMA address returned by the DDW is 4GB.
>
> When the device driver calls dma_supported, with mask less then 64-bit, the
> PowerPC IOMMU driver places PHB in the Limited Addressing Mode before
> creating DDW.
>
> [...]
Applied to powerpc/next.
[1/1] powerpc/pseries/iommu: create DDW for devices with DMA mask less than
64-bits
https://git.kernel.org/powerpc/c/67dfc11982f7e3c37f0977e74671da2391b29181
Thanks
