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To: Kit Chow <kchow@gigaio.com>, "Jiang, Dave" <dave.jiang@intel.com>,
 Eric Pilmore <epilmore@gigaio.com>, Bjorn Helgaas <helgaas@kernel.org>
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From: Logan Gunthorpe <logang@deltatee.com>
Message-ID: <adf51c74-36fa-b61d-8497-27bd75178ba4@deltatee.com>
Date: Thu, 9 Aug 2018 16:50:04 -0600
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Subject: Re: IOAT DMA w/IOMMU
List-ID: <linux-pci.vger.kernel.org>



On 09/08/18 04:48 PM, Kit Chow wrote:
> Based on Logan's comments, I am very hopeful that the dma_map_resource 
> will make things work on the older platforms...

Well, I *think* dma_map_single() would still work. So I'm not that
confident that's the root of your problem. I'd still like to see the
actual code snippet you are using.

Logan