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Diagnostic data for PHBs currently works by allocated a fixed-sized buffer. This is simple, but either wastes memory (though only a few kilobytes) or in the case of PHB4 isn't enough to fit the whole data blob. For machines that don't describe the diagnostic data size in the device tree, use the hardcoded buffer size as before. For those that do, only allocate exactly what's needed. In the special case of P7IOC (which has two types of diag data), the larger should be specified in the device tree. Signed-off-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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.