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The hypervisor might refuse to inflate pages. While the balloon driver handles this scenario correctly, a refusal to inflate a 2MB pages might cause the same page to be allocated again later just for its inflation to be refused again. This wastes energy and time. To avoid this situation, split the 2MB page to 4KB pages, and then try to inflate each one individually. Most of the 4KB pages out of the 2MB should be inflated successfully, and the balloon is likely to prevent the scenario of repeated refused inflation. Reviewed-by: Xavier Deguillard <xdeguillard@vmware.com> Signed-off-by: Nadav Amit <namit@vmware.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.
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.