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Before kexec boots to a crash kernel it checks whether the image in memory changed after load. This is done by the function kdump_csum_valid, which returns true, i.e. an int != 0, on success and 0 otherwise. In other words when kdump_csum_valid returns an error code it means that the validation succeeded. This is not only counterintuitive but also produces the wrong result if the kernel was build without CONFIG_CRASH_DUMP. Fix this by making kdump_csum_valid return a bool. Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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.