Re: [PATCH] dmaengine: ioat: Allocate correct size for descriptor chunk
From: Vinod Koul <vkoul@kernel.org>
Date: 2020-10-05 04:46:57
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From: Vinod Koul <vkoul@kernel.org>
Date: 2020-10-05 04:46:57
Also in:
lkml
On 22-09-20, 14:08, Logan Gunthorpe wrote:
dma_alloc_coherent() is called with a fixed SZ_2M size, but frees happen with IOAT_CHUNK_SIZE. Recently, IOAT_CHUNK_SIZE was reduced to 512M but the allocation did not change. To fix, change to using the IOAT_CHUNK_SIZE define. This was caught with the upcoming patchset for converting Intel platforms to the dma-iommu implementation. It has a warning when the unmapped size differs from the mapped size.
Applied, thanks -- ~Vinod