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Variable Length Arrays In Structs (VLAIS) is not supported by Clang, and frowned upon by others. https://lkml.org/lkml/2013/9/23/500 Here, the VLAIS was used because the size of the bitmap returned from xen_mc_entry() depended on possibly (based on kernel configuration) runtime sized data. Rather than declaring args as a VLAIS then calling sizeof on *args, we calculate the appropriate sizeof args manually. Further, we can get rid of the #ifdef's and rely on num_possible_cpus() (thanks to a helpful checkpatch warning from an earlier version of this patch). Suggested-by: Juergen Gross <jgross@suse.com> Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. 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.