Re: [PATCH 1/1] powerpc/kernel/iommu: Use largepool as a last resort when !largealloc

From: Michael Ellerman
Date: Thu Apr 29 2021 - 10:02:44 EST


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