From: Robin Murphy <robin.murphy@arm.com>
To: Will Deacon <will.deacon@arm.com>, Christoph Hellwig <hch@lst.de>,
john.stultz@linaro.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
iommu@lists.linux-foundation.org,
lkml <linux-kernel@vger.kernel.org>,
Valentin Schneider <valentin.schneider@arm.com>
Subject: Re: [PATCH 06/10] swiotlb: use swiotlb_map_page in swiotlb_map_sg_attrs
Date: Fri, 23 Nov 2018 19:34:15 +0000 [thread overview]
Message-ID: <1c782a3d-cac4-954f-21e7-ef89147f0d56@arm.com> (raw)
In-Reply-To: <20181123182715.GA21183@arm.com>
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/
next prev parent reply other threads:[~2018-11-23 19:34 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-08 8:02 move swiotlb noncoherent dma support from arm64 to generic code V2 Christoph Hellwig
2018-10-08 8:02 ` [PATCH 01/10] swiotlb: remove a pointless comment Christoph Hellwig
2018-10-11 17:49 ` Robin Murphy
2018-10-19 0:09 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 02/10] swiotlb: mark is_swiotlb_buffer static Christoph Hellwig
2018-10-11 17:54 ` Robin Murphy
2018-10-19 0:12 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 03/10] swiotlb: do not panic on mapping failures Christoph Hellwig
2018-10-11 18:06 ` Robin Murphy
2018-10-19 0:18 ` Konrad Rzeszutek Wilk
2018-10-19 0:17 ` Konrad Rzeszutek Wilk
2018-10-19 6:04 ` Christoph Hellwig
2018-10-19 13:45 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 04/10] swiotlb: remove the overflow buffer Christoph Hellwig
2018-10-11 18:19 ` Robin Murphy
2018-10-12 17:04 ` Catalin Marinas
2018-10-19 0:23 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 05/10] swiotlb: merge swiotlb_unmap_page and unmap_single Christoph Hellwig
2018-10-18 17:44 ` Robin Murphy
2018-10-19 0:25 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 06/10] swiotlb: use swiotlb_map_page in swiotlb_map_sg_attrs Christoph Hellwig
2018-10-18 17:53 ` Robin Murphy
2018-10-19 0:33 ` Konrad Rzeszutek Wilk
2018-11-07 1:27 ` John Stultz
2018-11-09 7:49 ` Christoph Hellwig
2018-11-09 16:37 ` Robin Murphy
2018-11-19 19:36 ` Robin Murphy
2018-11-20 9:22 ` Christoph Hellwig
2018-11-13 0:07 ` John Stultz
2018-11-13 0:26 ` John Stultz
2018-11-14 14:13 ` Christoph Hellwig
2018-11-14 16:12 ` Christoph Hellwig
2018-11-19 23:22 ` John Stultz
2018-11-20 9:25 ` Christoph Hellwig
2018-11-23 18:27 ` Will Deacon
2018-11-23 19:34 ` Robin Murphy [this message]
2018-11-26 19:31 ` Will Deacon
2018-10-08 8:02 ` [PATCH 07/10] swiotlb: refactor swiotlb_map_page Christoph Hellwig
2018-10-18 18:09 ` Robin Murphy
2018-10-19 0:37 ` Konrad Rzeszutek Wilk
2018-10-19 6:52 ` Christoph Hellwig
2018-10-19 13:46 ` Konrad Rzeszutek Wilk
2018-10-08 8:02 ` [PATCH 08/10] swiotlb: don't dip into swiotlb pool for coherent allocations Christoph Hellwig
2018-10-12 17:04 ` Catalin Marinas
2018-10-19 0:40 ` Konrad Rzeszutek Wilk
2018-10-19 16:45 ` Robin Murphy
2018-10-08 8:02 ` [PATCH 09/10] swiotlb: add support for non-coherent DMA Christoph Hellwig
2018-10-19 0:49 ` Konrad Rzeszutek Wilk
2018-10-22 17:11 ` Robin Murphy
2018-10-26 8:04 ` Christoph Hellwig
2018-10-26 9:59 ` Robin Murphy
2018-10-08 8:02 ` [PATCH 10/10] arm64: use the generic swiotlb_dma_ops Christoph Hellwig
2018-10-12 13:01 ` Robin Murphy
2018-10-12 14:40 ` Christoph Hellwig
2018-10-12 17:05 ` Catalin Marinas
2018-10-22 17:52 ` Robin Murphy
2018-10-26 12:44 ` Christoph Hellwig
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