Messages in this thread | | | Date | Mon, 04 Jun 2018 18:18:51 -0700 (PDT) | Subject | Re: [PATCH] riscv: add riscv-specific predefines to CHECKFLAGS | From | Palmer Dabbelt <> |
| |
On Thu, 31 May 2018 08:42:01 PDT (-0700), luc.vanoostenryck@gmail.com wrote: > RISC-V uses the macro __riscv_xlen, predefined by GCC, to > make the distinction between 32 or 64 bit code. > > However, sparse doesn't know anything about this macro > which lead to wrong warnings and failures. > > Fix this by adding a define of __riscv_xlen to CHECKFLAGS > and add one for __riscv too. > > Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> > --- > arch/riscv/Makefile | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile > index 76e958a54..6d4a5f6c3 100644 > --- a/arch/riscv/Makefile > +++ b/arch/riscv/Makefile > @@ -71,6 +71,9 @@ KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) > # architectures. It's faster to have GCC emit only aligned accesses. > KBUILD_CFLAGS += $(call cc-option,-mstrict-align) > > +# arch specific predefines for sparse > +CHECKFLAGS += -D__riscv -D__riscv_xlen=$(BITS) > + > head-y := arch/riscv/kernel/head.o > > core-y += arch/riscv/kernel/ arch/riscv/mm/
Thanks!
| |