From: Paolo 'Blaisorblade' Giarrusso We have never used this flag and recently one user experienced a complaining warning about this (there was a symbol in the positive half of the address space IIRC). So fix it. Signed-off-by: Paolo 'Blaisorblade' Giarrusso Cc: Jeff Dike Signed-off-by: Andrew Morton --- diff -puN arch/um/Makefile-x86_64~uml-use-mcmodel=kernel-for-x86_64 arch/um/Makefile-x86_64 --- a/arch/um/Makefile-x86_64~uml-use-mcmodel=kernel-for-x86_64 +++ a/arch/um/Makefile-x86_64 @@ -4,10 +4,13 @@ core-y += arch/um/sys-x86_64/ START := 0x60000000 +_extra_flags_ = -fno-builtin -m64 -mcmodel=kernel + #We #undef __x86_64__ for kernelspace, not for userspace where #it's needed for headers to work! -CFLAGS += -U__$(SUBARCH)__ -fno-builtin -m64 -USER_CFLAGS += -fno-builtin -m64 +CFLAGS += -U__$(SUBARCH)__ $(_extra_flags_) +USER_CFLAGS += $(_extra_flags_) + CHECKFLAGS += -m64 AFLAGS += -m64 LDFLAGS += -m elf_x86_64 _