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The current DMA coherent pool assumes that there is a kernel mapping at all times for the entire pool. This may not be what we want for the entire times. Add the dma_removed ops to support this use case. Bug: 145617272 Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Signed-off-by: Patrick Daly <pdaly@codeaurora.org> Signed-off-by: Liam Mark <lmark@codeaurora.org> Signed-off-by: Swathi Sridhar <swatsrid@codeaurora.org> [surenb Squashed the following commits: a478a8bf78ad "drivers: Add dma removed ops" 8510985ae320 "dma: removed: Merge dma removed changes from 4.14" and removed-dma-pool driver changes from 9d4b7d641556 "iommu: arm-smmu: Merge for ..."] Signed-off-by: Suren Baghdasaryan <surenb@google.com> Change-Id: Ie4f1e9bdf57b79699fa8fa7e7a6087e6d88ebbfa
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.
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