Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu()

[PATCH v7 00/12] MAP_DIRECT for DAX RDMA and userspace flush · Dan Williams <hidden> · 2017-10-06
[PATCH v7 01/12] mm: introduce MAP_SHARED_VALIDATE, a mechanism to safely define new mmap flags · Dan Williams <hidden> · 2017-10-06
[PATCH v7 02/12] fs, mm: pass fd to ->mmap_validate() · Dan Williams <hidden> · 2017-10-06
[PATCH v7 03/12] fs: introduce i_mapdcount · Dan Williams <hidden> · 2017-10-06
Re: [PATCH v7 03/12] fs: introduce i_mapdcount · Dave Chinner <david@fromorbit.com> · 2017-10-09
[PATCH v7 04/12] fs: MAP_DIRECT core · Dan Williams <hidden> · 2017-10-06
[PATCH v7 05/12] xfs: prepare xfs_break_layouts() for reuse with MAP_DIRECT · Dan Williams <hidden> · 2017-10-06
[PATCH v7 06/12] xfs: wire up MAP_DIRECT · Dan Williams <hidden> · 2017-10-06
Re: [PATCH v7 06/12] xfs: wire up MAP_DIRECT · Dave Chinner <david@fromorbit.com> · 2017-10-09
Re: [PATCH v7 06/12] xfs: wire up MAP_DIRECT · Dan Williams <hidden> · 2017-10-09
Re: [PATCH v7 06/12] xfs: wire up MAP_DIRECT · Dave Chinner <david@fromorbit.com> · 2017-10-09
[PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-06
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · David Woodhouse <dwmw2@infradead.org> · 2017-10-06
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-06
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · David Woodhouse <dwmw2@infradead.org> · 2017-10-06
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-06
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · David Woodhouse <dwmw2@infradead.org> · 2017-10-07
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-07
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-06
[PATCH v8] dma-mapping: introduce dma_get_iommu_domain() · Dan Williams <hidden> · 2017-10-08
Re: [PATCH v8] dma-mapping: introduce dma_get_iommu_domain() · Robin Murphy <robin.murphy@arm.com> · 2017-10-09
Re: [PATCH v8] dma-mapping: introduce dma_get_iommu_domain() · Dan Williams <hidden> · 2017-10-09
Re: [PATCH v8] dma-mapping: introduce dma_get_iommu_domain() · Raj, Ashok <hidden> · 2017-10-10
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Jason Gunthorpe <hidden> · 2017-10-09
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-09
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Jason Gunthorpe <hidden> · 2017-10-09
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-09
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Jason Gunthorpe <hidden> · 2017-10-10
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-10
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Jason Gunthorpe <hidden> · 2017-10-10
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-10
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Jason Gunthorpe <hidden> · 2017-10-12
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-12
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Christoph Hellwig <hch@lst.de> · 2017-10-13
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Jason Gunthorpe <hidden> · 2017-10-13
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Matan Barak <hidden> · 2017-10-15
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Dan Williams <hidden> · 2017-10-15
Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() · Christoph Hellwig <hch@lst.de> · 2017-10-13
[PATCH v7 08/12] fs, mapdirect: introduce ->lease_direct() · Dan Williams <hidden> · 2017-10-06
[PATCH v7 09/12] xfs: wire up ->lease_direct() · Dan Williams <hidden> · 2017-10-06
Re: [PATCH v7 09/12] xfs: wire up ->lease_direct() · Dave Chinner <david@fromorbit.com> · 2017-10-09
Re: [PATCH v7 09/12] xfs: wire up ->lease_direct() · Dan Williams <hidden> · 2017-10-09
[PATCH v7 10/12] device-dax: wire up ->lease_direct() · Dan Williams <hidden> · 2017-10-06
[PATCH v7 11/12] IB/core: use MAP_DIRECT to fix / enable RDMA to DAX mappings · Dan Williams <hidden> · 2017-10-06
[PATCH v8 1/2] iommu: up-level sg_num_pages() from amd-iommu · Dan Williams <hidden> · 2017-10-08
[PATCH v8 2/2] IB/core: use MAP_DIRECT to fix / enable RDMA to DAX mappings · Dan Williams <hidden> · 2017-10-08
Re: [PATCH v8 2/2] IB/core: use MAP_DIRECT to fix / enable RDMA to DAX mappings · kbuild test robot <hidden> · 2017-10-08
Re: [PATCH v8 2/2] IB/core: use MAP_DIRECT to fix / enable RDMA to DAX mappings · Dan Williams <hidden> · 2017-10-08
[PATCH v7 12/12] tools/testing/nvdimm: enable rdma unit tests · Dan Williams <hidden> · 2017-10-06

From: Dan Williams <hidden>
Date: 2017-10-15 15:21:25
Also in: linux-fsdevel, linux-mm, linux-rdma, linux-xfs, nvdimm

On Sun, Oct 15, 2017 at 8:14 AM, Matan Barak [off-list ref] wrote:
[..]

IMHO, using iommu for that and causing DMA errors just because the
lease broke isn't the right thing to do.

Yes, see the current proposal over in this thread:

https://lists.01.org/pipermail/linux-nvdimm/2017-October/012885.html

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