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The ISHTP layer can give us old responses that we already gave up on. We do not want to interpret these old responses as the current response we are waiting for. The cros_ish should only have one request in flight at a time. We send the request and wait for the response from the ISH. If the ISH is too slow to respond we give up on that request and we can send a new request. The ISH may still send the response to the request that timed out and without this we treat the old response as the response to the current command. This is a condition that should not normally happen but it has been observed with a bad ISH image. So add a token to the request header which is copied into the response header when the ISH processes the message to ensure that response is for the current request. Signed-off-by: Jett Rink <jettrink@chromium.org> Signed-off-by: Mathew King <mathewk@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.