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Commit07d2a628bc("powerpc/64s: Avoid cpabort in context switch when possible", 2017-06-09) changed the definition of PPC_INST_COPY and in so doing inadvertently broke the check for copy/paste instructions in the alignment fault handler. The check currently matches no instructions. This fixes it by ANDing both sides of the comparison with the mask. Fixes:07d2a628bc("powerpc/64s: Avoid cpabort in context switch when possible") Cc: stable@vger.kernel.org # v4.13+ Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Paul Mackerras <paulus@ozlabs.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.