Hi Björn,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2019fc96af228b412bdb2e8e0ad4b1fc12046a51
commit: 7f3631e88ee6fb13beac333a0e9e605d2414d17f riscv, bpf: Provide RISC-V specific JIT image alloc/free
date:   8 weeks ago
config: riscv-randconfig-a001-20200215 (attached as .config)
compiler: riscv64-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 7f3631e88ee6fb13beac333a0e9e605d2414d17f
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All error/warnings (new ones prefixed by >>):

   arch/riscv/net/bpf_jit_comp.c: In function 'bpf_jit_alloc_exec':
>> arch/riscv/net/bpf_jit_comp.c:1662:47: error: 'BPF_JIT_REGION_START' undeclared (first use in this function); did you mean 'BPF_LWT_REROUTE'?
     return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
                                                  ^~~~~~~~~~~~~~~~~~~~
                                                  BPF_LWT_REROUTE
   arch/riscv/net/bpf_jit_comp.c:1662:47: note: each undeclared identifier is reported only once for each function it appears in
>> arch/riscv/net/bpf_jit_comp.c:1663:9: error: 'BPF_JIT_REGION_END' undeclared (first use in this function); did you mean 'BPF_JIT_REGION_START'?
            BPF_JIT_REGION_END, GFP_KERNEL,
            ^~~~~~~~~~~~~~~~~~
            BPF_JIT_REGION_START
>> arch/riscv/net/bpf_jit_comp.c:1666:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +1662 arch/riscv/net/bpf_jit_comp.c

  1659	
  1660	void *bpf_jit_alloc_exec(unsigned long size)
  1661	{
> 1662		return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START,
> 1663					    BPF_JIT_REGION_END, GFP_KERNEL,
  1664					    PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE,
  1665					    __builtin_return_address(0));
> 1666	}
  1667	

---
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