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61783394f4
There are two possible ways the list of addresses that get passed to vfio are calculated. One is from a guest IDAL, which would be an array of (probably) non-contiguous addresses. The other is built from contiguous pages that follow the starting address provided by ccw->cda. page_array_alloc() attempts to simplify things by pre-populating this array from the starting address, but that's not needed for a CCW with an IDAL anyway so doesn't need to be in the allocator. Move it to the caller in the non-IDAL case, since it will be overwritten when reading the guest IDAL. Remove the initialization of the pa_page output pointers, since it won't be explicitly needed for either case. Signed-off-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
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| .clang-format | ||
| .cocciconfig | ||
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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 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.