By default, sparse assumes a 64bit machine when compiled on x86-64 and 32bit when compiled on anything else.
This can of course create all sort of problems when this doesn't correspond to the target's machine size, like issuing false warnings like: 'shift too big (32) for type unsigned long' or is 64bit while sparse was compiled on a 32bit machine, or worse, to not emit legitimate warnings. Fix this by passing the appropriate -m32/-m64 flag to sparse. Signed-off-by: Luc Van Oostenryck <luc.vanoostenr...@gmail.com> --- arch/riscv/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 76e958a54..cb2502e4c 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -71,6 +71,8 @@ KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) # architectures. It's faster to have GCC emit only aligned accesses. KBUILD_CFLAGS += $(call cc-option,-mstrict-align) +CHECKFLAGS += -m$(BITS) + head-y := arch/riscv/kernel/head.o core-y += arch/riscv/kernel/ arch/riscv/mm/ -- 2.17.0
