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A synchronous machine check is an exception raised by the attempt to execute the current instruction. If the error can't be corrected, it can make sense to SIGBUS the currently running process. In other cases, the error condition is not related to the current instruction, so killing the current process is not the right thing to do. Today, all machine checks are MCE_SEV_ERROR_SYNC, so this has no practical change. It will be used to handle POWER9 asynchronous machine checks. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> 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.