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926b5dfa6b
We currently allocate redistributor region structures for individual redistributors when ACPI doesn't present us with compact MMIO regions covering multiple redistributors. It turns out that we allocate these structures even when the redistributor is flagged as disabled by ACPI. It works fine until someone actually tries to tarse one of these structures, and access the corresponding MMIO region. Instead, track the number of enabled redistributors, and only allocate what is required. This makes sure that there is no invalid data to misuse. Signed-off-by: Marc Zyngier <maz@kernel.org> Reported-by: Heyi Guo <guoheyi@huawei.com> Tested-by: Heyi Guo <guoheyi@huawei.com> Link: https://lore.kernel.org/r/20191216062745.63397-1-guoheyi@huawei.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.