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kmap() has been deprecated in favor of the kmap_local_page() call. kmap_local_page() is thread local. In the sdma coalesce case the page allocated is potentially free'ed in a different context through qib_sdma_get_complete() -> qib_user_sdma_make_progress(). The use of kmap_local_page() is inappropriate in this call path. However, the page is allocated using GFP_KERNEL and will never be from highmem. Remove the use of kmap calls and use page_address() in this case. Signed-off-by: Ira Weiny <ira.weiny@intel.com> Link: https://lore.kernel.org/r/20230217-kmap-qib-v1-1-e5a6fde167e0@intel.com Acked-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
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.