[PATCH v3] powerpc/iommu: DMA address offset is incorrectly calculated with 2MB TCEs

[Michael Ellerman]

On Thu, 04 May 2023 12:59:13 -0500, Gaurav Batra wrote:
> When DMA window is backed by 2MB TCEs, the DMA address for the mapped
> page should be the offset of the page relative to the 2MB TCE. The code
> was incorrectly setting the DMA address to the beginning of the TCE
> range.
> 
> Mellanox driver is reporting timeout trying to ENABLE_HCA for an SR-IOV
> ethernet port, when DMA window is backed by 2MB TCEs.
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc/iommu: DMA address offset is incorrectly calculated with 2MB TCEs
      https://git.kernel.org/powerpc/c/096339ab84f36beae0b1db25e0ce63fb3873e8b2

cheers