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The act of processing a fetched CCW has two components: 1) Process a Transfer-in-channel (TIC) CCW 2) Process any other CCW The former needs to look at whether the TIC jumps backwards into the current channel program or forwards into a new segment, while the latter just processes the CCW data address itself. Rather than passing the chain segment and index within it to the handlers for the above, and requiring each to calculate the elements it needs, simply pass the needed pointers directly. For the TIC, that means the CCW being processed and the location of the entire channel program which holds all segments. For the other CCWs, the page_array pointer is also needed to perform the page pinning, etc. While at it, rename ccwchain_fetch_direct to _ccw, to indicate what it is. The name "_direct" is historical, when it used to process a direct-addressed CCW, but IDAs are processed here too. 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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| certs | ||
| crypto | ||
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| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
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| lib | ||
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| .clang-format | ||
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| .rustfmt.toml | ||
| COPYING | ||
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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.