2e8039c656
Add a helper to zero fill fields before copying data to UVERBS_ATTR_STRUCT. As UVERBS_ATTR_STRUCT can be used as an extensible struct, we want to make sure that if the user supplies us with a struct that has new fields that we are not aware of, we return them zeroed to the user. This helper should be used when using UVERBS_ATTR_STRUCT for an extendable data structure and there is a need to make sure that extended members of the struct, that the kernel doesn't handle, are returned zeroed to the user. This is needed due to the fact that UVERBS_ATTR_STRUCT allows non-zero values for members after 'last' member. Signed-off-by: Michael Guralnik <michaelgur@mellanox.com> Reviewed-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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.