Re: [PATCH kernel v2] pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window

On Wed, 29 Jun 2022 16:06:14 +1000, Alexey Kardashevskiy wrote:

The pseries platform uses 32bit default DMA window (always 4K pages) and
optional 64bit DMA window available via DDW ("Dynamic DMA Windows"),
64K or 2M pages. For ages the default one was not removed and a huge
window was created in addition. Things changed with SRIOV-enabled
PowerVM which creates a default-and-bigger DMA window in 64bit space
(still using 4K pages) for IOV VFs so certain OSes do not need to use
the DDW API in order to utilize all available TCE budget.

[...]

Applied to powerpc/next.

[1/1] pseries/iommu/ddw: Fix kdump to work in absence of ibm,dma-window
      https://git.kernel.org/powerpc/c/b1fc44eaa9ba31e28c4125d6b9205a3582b47b5d

cheers