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commit27da80719eupstream. The commit identified below adds MC_BTB_FLUSH macro only when CONFIG_PPC_FSL_BOOK3E is defined. This results in the following error on some configs (seen several times with kisskb randconfig_defconfig) arch/powerpc/kernel/exceptions-64e.S:576: Error: Unrecognized opcode: `mc_btb_flush' make[3]: *** [scripts/Makefile.build:367: arch/powerpc/kernel/exceptions-64e.o] Error 1 make[2]: *** [scripts/Makefile.build:492: arch/powerpc/kernel] Error 2 make[1]: *** [Makefile:1043: arch/powerpc] Error 2 make: *** [Makefile:152: sub-make] Error 2 This patch adds a blank definition of MC_BTB_FLUSH for other cases. Fixes:10c5e83afd("powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)") Cc: Diana Craciun <diana.craciun@nxp.com> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Diana Craciun <diana.craciun@nxp.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.