On Tue, 2019-06-25 at 13:47 +0100, Vincenzo Frascino wrote: > Hi Qian, > > On 25/06/2019 13:16, Qian Cai wrote: > > The linux-next commit "arm64: vdso: Substitute gettimeofday() with C > > implementation" [1] breaks clang build. > > > > error: invalid value 'tiny' in '-mcode-model tiny' > > make[1]: *** [scripts/Makefile.build:279: > > arch/arm64/kernel/vdso/vgettimeofday.o] Error 1 > > make[1]: *** Waiting for unfinished jobs.... > > make: *** [arch/arm64/Makefile:180: vdso_prepare] Error 2 > > > > [1] https://patchwork.kernel.org/patch/11009663/ > > > > I am not sure what does exactly break from your report. Could you please > provide > more details?
Here is the config to reproduce. https://raw.githubusercontent.com/cailca/linux-mm/master/arm64.config # make CC=clang -j $(nr_cpus) I can get it working again by removing "-mcmodel=tiny" in arch/arm64/kernel/vdso/Makefile > > On my env: > > $ make mrproper && make defconfig && make CC=clang HOSTCC=clang -j$(nproc) > > ... > > arch/arm64/Makefile:56: CROSS_COMPILE_COMPAT is clang, the compat vDSO will > not > be built > > ... > > LDS arch/arm64/kernel/vdso/vdso.lds > AS arch/arm64/kernel/vdso/note.o > AS arch/arm64/kernel/vdso/sigreturn.o > CC arch/arm64/kernel/vdso/vgettimeofday.o > LD arch/arm64/kernel/vdso/vdso.so.dbg > VDSOCHK arch/arm64/kernel/vdso/vdso.so.dbg > VDSOSYM include/generated/vdso-offsets.h > > ... > > LD vmlinux.o > MODPOST vmlinux.o > MODINFO modules.builtin.modinfo > KSYM .tmp_kallsyms1.o > KSYM .tmp_kallsyms2.o > LD vmlinux > SORTEX vmlinux > SYSMAP System.map > Building modules, stage 2. > OBJCOPY arch/arm64/boot/Image > MODPOST 483 modules >
