On Wed, Dec 09, 2020 at 12:46:57PM -0800, Randy Dunlap wrote: > When building block/blk-iocost.c on arch/x6x/ or arch/nios2/, the > build fails due to missing the <asm/local64.h> file. Please mark it mandatory-y if the asm-generic version is suitable for everyone and random pieces of kernel code are supposed to include it.