Re: ensure dma_alloc_coherent always returns zeroed memory
From: "hch@lst.de" <hch@lst.de>
Date: 2018-12-20 14:34:19
Also in:
linux-iommu, linux-s390, lkml, sparclinux
On Thu, Dec 20, 2018 at 02:32:52PM +0000, Eugeniy Paltsev wrote:
Hi Christoph, I test kernel from your 'dma-alloc-always-zero' branch, and as I can see we have DMA peripherals (like USB) broken.
I would be really surprised if that is caused by the patch to add the zeroing. Can you check which commit caused the issue by bisecting from a known good baseline?