Hi Luc, The typo in the subject made me curious... Am 30.05.2018 um 22:48 schrieb Luc Van Oostenryck: > 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 for the other archs, like > issuing false warnings ('shift too big (32) for type unsigned long'), or > worse, failing to emit legitimate warnings. > > Fix this by adding the -m32/-m64 flag, depending on CONFIG_64BIT, > to CHECKFLAGS in the main Makefile (and so for all archs). > Also, remove the now unneeded -m32/-m64 in arch specific Makefiles. > > Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx> > --- > Makefile | 3 +++ > arch/alpha/Makefile | 2 +- > arch/arm/Makefile | 2 +- > arch/arm64/Makefile | 2 +- > arch/ia64/Makefile | 2 +- > arch/mips/Makefile | 3 --- > arch/parisc/Makefile | 2 +- > arch/sparc/Makefile | 2 +- > arch/x86/Makefile | 2 +- > 9 files changed, 10 insertions(+), 10 deletions(-) What about the architectures not touched by your patch that previously had no -m32/-m64? (arc, c6x, h8300, hexagon, m68k, microblaze, nds32, nios2, openrisc, powerpc, riscv, s390, sh, unicore32, xtensa) You forgot to CC them on this patch. Have you really checked that all their toolchains support the -m32/-m64 flags you newly introduce for them? Apart from non-biarch architectures, I'm thinking of 31-bit s390 as a corner case where !64 != 32. Regards, Andreas -- SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html