Thomas reported that build of x86_64 kernel was failing for him. He is using 32bit tool chain.
Problem is that while compiling purgatory, I have not specified -m64 flag. And 32bit tool chain must be assuming -m32 by default. Following is error message. (mini) [~/work/linux-2.6] make scripts/kconfig/conf --silentoldconfig Kconfig CHK include/config/kernel.release UPD include/config/kernel.release CHK include/generated/uapi/linux/version.h CHK include/generated/utsrelease.h UPD include/generated/utsrelease.h CC arch/x86/purgatory/purgatory.o arch/x86/purgatory/purgatory.c:1:0: error: code model 'large' not supported in the 32 bit mode make[1]: *** [arch/x86/purgatory/purgatory.o] Error 1 make: *** [archprepare] Error 2 Fix it by explicitly passing appropriate -m64/-m32 build flag for purgatory. Reported-by: Thomas Glanzmann <[email protected]> Tested-by: Thomas Glanzmann <[email protected]> Suggested-by: H. Peter Anvin <[email protected]> Signed-off-by: Vivek Goyal <[email protected]> --- arch/x86/purgatory/Makefile | 1 + 1 file changed, 1 insertion(+) Index: linux-2.6/arch/x86/purgatory/Makefile =================================================================== --- linux-2.6.orig/arch/x86/purgatory/Makefile 2014-08-20 11:32:21.723559119 -0400 +++ linux-2.6/arch/x86/purgatory/Makefile 2014-08-20 11:32:23.654570231 -0400 @@ -11,6 +11,7 @@ targets += purgatory.ro # sure how to relocate those. Like kexec-tools, use custom flags. KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes -fno-zero-initialized-in-bss -fno-builtin -ffreestanding -c -MD -Os -mcmodel=large +KBUILD_CFLAGS += -m$(BITS) $(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE $(call if_changed,ld) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
