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We currently test for is_exec and DSISR_PROTFAULT but that doesn't make sense as this is the wrong error bit to test for an execute permission failure. In fact, we had code that would return early if we had an exec fault in kernel mode so I think that was just dead code anyway. Finally the location of that test is awkward and prevents further simplifications. So instead move that test into a helper along with the existing early test for kernel exec faults and out of range accesses, and put it all in a "bad_kernel_fault()" helper. While at it test the correct error bits. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 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.