This might add little value. arm build sets failed on linux next 20200721. The defconfig ( +config fragments ) builds PASS. The tinyconfig and allnoconfig FAILED with gcc-8, gcc-9 and gcc-10.
make -sk KBUILD_BUILD_USER=TuxBuild -C/linux -j32 ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- HOSTCC=gcc CC="sccache arm-linux-gnueabihf-gcc" O=build zImage # ../arch/arm/kernel/entry-common.S: Assembler messages: ../arch/arm/kernel/entry-common.S:156: Error: r13 not allowed here -- `bic tsk,sp,#(((1<<12)<<1)-1)&~63' ../arch/arm/kernel/entry-common.S:243: Error: r13 not allowed here -- `bic tsk,sp,#(((1<<12)<<1)-1)&~63' make[3]: *** [../scripts/Makefile.build:361: arch/arm/kernel/entry-common.o] Error 1 ../arch/arm/kernel/entry-v7m.S: Assembler messages: ../arch/arm/kernel/entry-v7m.S:60: Error: r13 not allowed here -- `bic tsk,sp,#(((1<<12)<<1)-1)&~63' ../arch/arm/kernel/entry-v7m.S:86: Error: r13 not allowed here -- `bic tsk,sp,#(((1<<12)<<1)-1)&~63' make[3]: *** [../scripts/Makefile.build:361: arch/arm/kernel/entry-v7m.o] Error 1 full build link, https://gitlab.com/Linaro/lkft/kernel-runs/-/jobs/648560264 -- Linaro LKFT https://lkft.linaro.org
