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On MCE the current code will restart the machine with ppc_md.restart(). This case was extremely unlikely since prior to that a skiboot call is made and that resulted in a checkstop for analysis. With newer skiboots, on P9 we don't checkstop the box by default, instead we return back to the kernel to extract useful information at the time of the MCE. While we still get this information, this patch converts the restart to a panic(), so that if configured a dump can be taken and we can track and probably debug the potential issue causing the MCE. Signed-off-by: Balbir Singh <bsingharora@gmail.com> Reviewed-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Stewart Smith <stewart@linux.vnet.ibm.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.