3eb0ac869c
The primitive currently uses channel->lock to protect the loop over sc_list w.r.t. list additions/deletions but it doesn't protect the target_cpu(s) loads w.r.t. a concurrent target_cpu_store(): while the data races on target_cpu are hardly of any concern here, replace the channel->lock critical section with a channel_mutex critical section and extend the latter to include the loads of target_cpu; this same pattern is also used in hv_synic_cleanup(). Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Link: https://lore.kernel.org/r/20200617164642.37393-6-parri.andrea@gmail.com Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Wei Liu <wei.liu@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.