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3114c67440
Addresses intended for MMIO should be propagated through to the iommu with the IOMMU_MMIO flag set. Keep track in the batch if all the pfns are cachable or mmio and flush the batch out of it ever needs to be changed. Switch to IOMMU_MMIO if the batch is MMIO when mapping the iommu. Link: https://patch.msgid.link/r/5-v2-b2c110338e3f+5c2-iommufd_dmabuf_jgg@nvidia.com Reviewed-by: Nicolin Chen <nicolinc@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Tested-by: Shuai Xue <xueshuai@linux.alibaba.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
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| README | ||
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 reStructuredText 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.