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| Filename | Latest commit message | Latest commit date |
|---|---|---|
c59666bb32
Presently, when ntb_transport is used with DMA and the IOMMU turned on, it fails with errors from the IOMMU such as: DMAR: DRHD: handling fault status reg 202 DMAR: [DMA Write] Request device [00:04.0] fault addr 381fc0340000 [fault reason 05] PTE Write access is not set This is because ntb_transport does not map the BAR space with the IOMMU. To fix this, we map the entire MW region for each QP after we assign the DMA channel. This prevents needing an extra DMA map in the fast path. Link: https://lore.kernel.org/linux-pci/499934e7-3734-1aee-37dd-b42a5d2a2608@intel.com/ Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.