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This reverts commitdfd74a1edf. This has been fixed by commitdca4436d1cwhich added the out of bounds check to __add_memory, so that trying to add blocks past MAX_PHYSMEM_BITS will fail. Note the check in the Xen balloon driver was bogus anyway, as it checked the start address of the resource, but it should instead test the end address to assert the whole resource falls below MAX_PHYSMEM_BITS. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/20200727091342.52325-4-roger.pau@citrix.com Signed-off-by: Juergen Gross <jgross@suse.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.