This actually seems to break the compilation for me in for-next:
hch@carbon:~/work/linux$ make ARCH=riscv
CALL scripts/checksyscalls.sh
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
CHK include/generated/compile.h
CC arch/riscv/kernel/syscall_table.o
./arch/riscv/include/uapi/asm/syscalls.h:29:36: error: 'sys_riscv_flush_icache'
undeclared here (not in a function); did you mean '__NR_riscv_flush_icache'?
__SYSCALL(__NR_riscv_flush_icache, sys_riscv_flush_icache)
^
arch/riscv/kernel/syscall_table.c:21:37: note: in definition of macro
'__SYSCALL'
#define __SYSCALL(nr, call) [nr] = (call),
^~~~
make[1]: *** [scripts/Makefile.build:318: arch/riscv/kernel/syscall_table.o]
Error 1
make: *** [Makefile:1029: arch/riscv/kernel] Error 2
Reverting it for now, but I guess this might hit others too..
