From: Luc Van Oostenryck luc.vanoostenryck@gmail.com
[ Upstream commit f5d284900c0f960e318a063f4c40826b6e3aa6a8 ]
When using sparse on the arm64 tree we get many thousands of warnings like 'constant ... is so big it is unsigned long long' or 'shift too big (32) for type unsigned long'. This happens because by default sparse considers the machine as 32bit and defines the size of the types accordingly.
Fix this by passing the '-m64' flag to sparse so that sparse can correctly define longs as being 64bit.
CC: Catalin Marinas catalin.marinas@arm.com CC: Will Deacon will.deacon@arm.com CC: linux-arm-kernel@lists.infradead.org Signed-off-by: Luc Van Oostenryck luc.vanoostenryck@gmail.com Signed-off-by: Will Deacon will.deacon@arm.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- arch/arm64/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 92110c2c6c59..bc66f4b6a1cb 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -58,7 +58,7 @@ LD += -EL UTS_MACHINE := aarch64 endif
-CHECKFLAGS += -D__aarch64__ +CHECKFLAGS += -D__aarch64__ -m64
ifeq ($(CONFIG_ARM64_MODULE_CMODEL_LARGE), y) KBUILD_CFLAGS_MODULE += -mcmodel=large