Following riscv tiny and allnoconfig build failed on linux next 20210222 tag - riscv (tinyconfig) with gcc-8, gcc-9 and gcc-10 - riscv (allnoconfig) with gcc-8, gcc-9 and gcc-10

make --silent --keep-going --jobs=8 O=/home/tuxbuild/.cache/tuxmake/builds/1/tmp ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- 'CC=sccache riscv64-linux-gnu-gcc' 'HOSTCC=sccache gcc' In file included from arch/riscv/kernel/setup.c:29: arch/riscv/include/asm/sbi.h: In function 'sbi_remote_fence_i': arch/riscv/include/asm/sbi.h:150:1: error: no return statement in function returning non-void [-Werror=return-type] 150 | static inline int sbi_remote_fence_i(const unsigned long *hart_mask) {} | ^~~~~~ cc1: some warnings being treated as errors make[3]: *** [scripts/Makefile.build:287: arch/riscv/kernel/setup.o] Error 1

Reported-by: Naresh Kamboju naresh.kamboju@linaro.org

step to reproduce: ------------------ # TuxMake is a command line tool and Python library that provides # portable and repeatable Linux kernel builds across a variety of # architectures, toolchains, kernel configurations, and make targets. # # TuxMake supports the concept of runtimes. # See https://docs.tuxmake.org/runtimes/, for that to work it requires # that you install podman or docker on your system. # # To install tuxmake on your system globally: # sudo pip3 install -U tuxmake # # See https://docs.tuxmake.org/ for complete documentation.

tuxmake --runtime podman --target-arch riscv --toolchain gcc-9 --kconfig tinyconfig

build log, https://builds.tuxbuild.com/1opbLmoztDBhgUOMidDILjVsQys/