Re: [PATCH 1/1] powerpc/kernel/iommu: Use largepool as a last resort when !largealloc
From: Michael Ellerman <hidden>
Date: 2021-04-29 14:02:44
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On Thu, 18 Mar 2021 14:44:17 -0300, Leonardo Bras wrote:
As of today, doing iommu_range_alloc() only for !largealloc (npages <= 15) will only be able to use 3/4 of the available pages, given pages on largepool not being available for !largealloc. This could mean some drivers not being able to fully use all the available pages for the DMA window. [...]
Applied to powerpc/next.
[1/1] powerpc/kernel/iommu: Use largepool as a last resort when !largealloc
https://git.kernel.org/powerpc/c/fc5590fd56c9608f317729b59a56dad2a75d633f
cheers