From: Will Deacon <will.deacon@arm.com> To: Christoph Hellwig <hch@lst.de>, john.stultz@linaro.org Cc: Catalin Marinas <catalin.marinas@arm.com>, Robin Murphy <robin.murphy@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 18:27:16 +0000 [thread overview] Message-ID: <20181123182715.GA21183@arm.com> (raw) In-Reply-To: <20181120092516.GC7270@lst.de> 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? Thanks, Will > diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h > index bd73e7a91410..1833f0c1fba0 100644 > --- a/include/linux/dma-direct.h > +++ b/include/linux/dma-direct.h > @@ -5,7 +5,7 @@ > #include <linux/dma-mapping.h> > #include <linux/mem_encrypt.h> > > -#define DIRECT_MAPPING_ERROR 0 > +#define DIRECT_MAPPING_ERROR (~(dma_addr_t)0x0) > > #ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA > #include <asm/dma-direct.h>
WARNING: multiple messages have this Message-ID (diff)
From: will.deacon@arm.com (Will Deacon) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 06/10] swiotlb: use swiotlb_map_page in swiotlb_map_sg_attrs Date: Fri, 23 Nov 2018 18:27:16 +0000 [thread overview] Message-ID: <20181123182715.GA21183@arm.com> (raw) In-Reply-To: <20181120092516.GC7270@lst.de> 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? Thanks, Will > diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h > index bd73e7a91410..1833f0c1fba0 100644 > --- a/include/linux/dma-direct.h > +++ b/include/linux/dma-direct.h > @@ -5,7 +5,7 @@ > #include <linux/dma-mapping.h> > #include <linux/mem_encrypt.h> > > -#define DIRECT_MAPPING_ERROR 0 > +#define DIRECT_MAPPING_ERROR (~(dma_addr_t)0x0) > > #ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA > #include <asm/dma-direct.h>
next prev parent reply other threads:[~2018-11-23 18:27 UTC|newest] Thread overview: 131+ 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 ` Christoph Hellwig 2018-10-08 8:02 ` [PATCH 01/10] swiotlb: remove a pointless comment Christoph Hellwig 2018-10-08 8:02 ` Christoph Hellwig 2018-10-11 17:49 ` Robin Murphy 2018-10-11 17:49 ` Robin Murphy 2018-10-19 0:09 ` Konrad Rzeszutek Wilk 2018-10-19 0:09 ` Konrad Rzeszutek Wilk 2018-10-19 0:09 ` Konrad Rzeszutek Wilk 2018-10-08 8:02 ` [PATCH 02/10] swiotlb: mark is_swiotlb_buffer static Christoph Hellwig 2018-10-08 8:02 ` Christoph Hellwig 2018-10-11 17:54 ` Robin Murphy 2018-10-11 17:54 ` Robin Murphy 2018-10-19 0:12 ` Konrad Rzeszutek Wilk 2018-10-19 0:12 ` Konrad Rzeszutek Wilk 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 2018-10-08 8:02 ` Christoph Hellwig 2018-10-11 18:06 ` Robin Murphy 2018-10-11 18:06 ` Robin Murphy 2018-10-19 0:18 ` Konrad Rzeszutek Wilk 2018-10-19 0:18 ` Konrad Rzeszutek Wilk 2018-10-19 0:18 ` Konrad Rzeszutek Wilk 2018-10-19 0:17 ` Konrad Rzeszutek Wilk 2018-10-19 0:17 ` Konrad Rzeszutek Wilk 2018-10-19 0:17 ` Konrad Rzeszutek Wilk 2018-10-19 6:04 ` Christoph Hellwig 2018-10-19 6:04 ` Christoph Hellwig 2018-10-19 13:45 ` Konrad Rzeszutek Wilk 2018-10-19 13:45 ` Konrad Rzeszutek Wilk 2018-10-19 13:45 ` Konrad Rzeszutek Wilk 2018-10-08 8:02 ` [PATCH 04/10] swiotlb: remove the overflow buffer Christoph Hellwig 2018-10-08 8:02 ` Christoph Hellwig 2018-10-11 18:19 ` Robin Murphy 2018-10-11 18:19 ` Robin Murphy 2018-10-12 17:04 ` Catalin Marinas 2018-10-12 17:04 ` Catalin Marinas 2018-10-19 0:23 ` Konrad Rzeszutek Wilk 2018-10-19 0:23 ` Konrad Rzeszutek Wilk 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 2018-10-08 8:02 ` Christoph Hellwig 2018-10-18 17:44 ` Robin Murphy 2018-10-18 17:44 ` Robin Murphy 2018-10-19 0:25 ` Konrad Rzeszutek Wilk 2018-10-19 0:25 ` Konrad Rzeszutek Wilk 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 2018-10-08 8:02 ` Christoph Hellwig 2018-10-18 17:53 ` Robin Murphy 2018-10-18 17:53 ` Robin Murphy 2018-10-18 17:53 ` Robin Murphy 2018-10-19 0:33 ` Konrad Rzeszutek Wilk 2018-10-19 0:33 ` Konrad Rzeszutek Wilk 2018-10-19 0:33 ` Konrad Rzeszutek Wilk 2018-11-07 1:27 ` John Stultz 2018-11-07 1:27 ` John Stultz 2018-11-09 7:49 ` Christoph Hellwig 2018-11-09 7:49 ` Christoph Hellwig 2018-11-09 16:37 ` Robin Murphy 2018-11-09 16:37 ` Robin Murphy 2018-11-19 19:36 ` Robin Murphy 2018-11-19 19:36 ` Robin Murphy 2018-11-19 19:36 ` Robin Murphy 2018-11-20 9:22 ` Christoph Hellwig 2018-11-20 9:22 ` Christoph Hellwig 2018-11-13 0:07 ` John Stultz 2018-11-13 0:07 ` John Stultz 2018-11-13 0:26 ` John Stultz 2018-11-13 0:26 ` John Stultz 2018-11-14 14:13 ` Christoph Hellwig 2018-11-14 14:13 ` Christoph Hellwig 2018-11-14 16:12 ` Christoph Hellwig 2018-11-14 16:12 ` Christoph Hellwig 2018-11-19 23:22 ` John Stultz 2018-11-19 23:22 ` John Stultz 2018-11-20 9:25 ` Christoph Hellwig 2018-11-20 9:25 ` Christoph Hellwig 2018-11-23 18:27 ` Will Deacon [this message] 2018-11-23 18:27 ` Will Deacon 2018-11-23 19:34 ` Robin Murphy 2018-11-23 19:34 ` Robin Murphy 2018-11-26 19:31 ` Will Deacon 2018-11-26 19:31 ` Will Deacon 2018-10-08 8:02 ` [PATCH 07/10] swiotlb: refactor swiotlb_map_page Christoph Hellwig 2018-10-08 8:02 ` Christoph Hellwig 2018-10-18 18:09 ` Robin Murphy 2018-10-18 18:09 ` Robin Murphy 2018-10-19 0:37 ` Konrad Rzeszutek Wilk 2018-10-19 0:37 ` Konrad Rzeszutek Wilk 2018-10-19 0:37 ` Konrad Rzeszutek Wilk 2018-10-19 6:52 ` Christoph Hellwig 2018-10-19 6:52 ` Christoph Hellwig 2018-10-19 6:52 ` Christoph Hellwig 2018-10-19 13:46 ` Konrad Rzeszutek Wilk 2018-10-19 13:46 ` Konrad Rzeszutek Wilk 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 2018-10-08 8:02 ` Christoph Hellwig 2018-10-12 17:04 ` Catalin Marinas 2018-10-12 17:04 ` Catalin Marinas 2018-10-19 0:40 ` Konrad Rzeszutek Wilk 2018-10-19 0:40 ` Konrad Rzeszutek Wilk 2018-10-19 0:40 ` Konrad Rzeszutek Wilk 2018-10-19 16:45 ` Robin Murphy 2018-10-19 16:45 ` Robin Murphy 2018-10-08 8:02 ` [PATCH 09/10] swiotlb: add support for non-coherent DMA Christoph Hellwig 2018-10-08 8:02 ` Christoph Hellwig 2018-10-19 0:49 ` Konrad Rzeszutek Wilk 2018-10-19 0:49 ` Konrad Rzeszutek Wilk 2018-10-22 17:11 ` Robin Murphy 2018-10-22 17:11 ` Robin Murphy 2018-10-26 8:04 ` Christoph Hellwig 2018-10-26 8:04 ` Christoph Hellwig 2018-10-26 9:59 ` Robin Murphy 2018-10-26 9:59 ` Robin Murphy 2018-10-26 9:59 ` Robin Murphy 2018-10-08 8:02 ` [PATCH 10/10] arm64: use the generic swiotlb_dma_ops Christoph Hellwig 2018-10-08 8:02 ` Christoph Hellwig 2018-10-12 13:01 ` Robin Murphy 2018-10-12 13:01 ` Robin Murphy 2018-10-12 14:40 ` Christoph Hellwig 2018-10-12 14:40 ` Christoph Hellwig 2018-10-12 17:05 ` Catalin Marinas 2018-10-12 17:05 ` Catalin Marinas 2018-10-12 17:05 ` Catalin Marinas 2018-10-22 17:52 ` Robin Murphy 2018-10-22 17:52 ` Robin Murphy 2018-10-22 17:52 ` Robin Murphy 2018-10-26 12:44 ` Christoph Hellwig 2018-10-26 12:44 ` Christoph Hellwig
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