cdfa835c6e
This fixes two design flaws in hv_uio_generic. Since hv_uio_probe is called from vmbus_probe with lock held it potentially can cause sleep in an atomic section because vmbus_open will wait for response from host. The hv_uio_generic driver could not handle applications exiting and restarting because the vmbus channel was persistent. Change the semantics so that the buffers are allocated on probe, but not attached to host until device is opened. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.