Messages in this thread | | | Subject | Re: [PATCH 06/10] swiotlb: use swiotlb_map_page in swiotlb_map_sg_attrs | From | Robin Murphy <> | Date | Fri, 23 Nov 2018 19:34:15 +0000 |
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Hi Will,
On 2018-11-23 6:27 pm, Will Deacon wrote: > Hi John, > > On Tue, Nov 20, 2018 at 10:25:16AM +0100, Christoph Hellwig wrote: >> On Mon, Nov 19, 2018 at 03:22:13PM -0800, John Stultz wrote: >>>> + sg->dma_address = dma_addr; >>>> sg_dma_len(sg) = sg->length; >>>> } >>> >>> I know Robin has already replied with more detailed info, but just to >>> close the loop as I'm finally home, applying this patch didn't seem to >>> help with the IO hangs I'm seeing w/ HiKey960. >> >> If Robins observation is right this should fix the problem for you: > > Please could you give this diff a try and let us know whether the problem > persists with your board?
This is actually the exact same change that I ended up with in my fixes[1], which John has indeed confirmed.
(sorry, it's the thing I was telling you about the other day, but I neglected to include you on cc you when I sent the patches out the following morning)
Robin.
[1] https://lore.kernel.org/lkml/cover.1542812807.git.robin.murphy@arm.com/
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