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Date: Fri, 3 Apr 2020 00:51:25 +0200 From: Daniel Borkmann <daniel@...earbox.net> To: Björn Töpel <bjorn.topel@...il.com>, netdev@...r.kernel.org, bpf@...r.kernel.org, ast@...nel.org Cc: linux-riscv@...ts.infradead.org, Damien.LeMoal@....com, hch@...radead.org, kbuild test robot <lkp@...el.com> Subject: Re: [PATCH bpf] riscv: remove BPF JIT for nommu builds On 3/31/20 12:10 PM, Björn Töpel wrote: > The BPF JIT fails to build for kernels configured to !MMU. Without an > MMU, the BPF JIT does not make much sense, therefore this patch > disables the JIT for nommu builds. > > This was reported by the kbuild test robot: > > All errors (new ones prefixed by >>): > > arch/riscv/net/bpf_jit_comp64.c: In function 'bpf_jit_alloc_exec': > >> arch/riscv/net/bpf_jit_comp64.c:1094:47: error: 'BPF_JIT_REGION_START' undeclared (first use in this function) > 1094 | return __vmalloc_node_range(size, PAGE_SIZE, BPF_JIT_REGION_START, > | ^~~~~~~~~~~~~~~~~~~~ > arch/riscv/net/bpf_jit_comp64.c:1094:47: note: each undeclared identifier is reported only once for each function it appears in > >> arch/riscv/net/bpf_jit_comp64.c:1095:9: error: 'BPF_JIT_REGION_END' undeclared (first use in this function) > 1095 | BPF_JIT_REGION_END, GFP_KERNEL, > | ^~~~~~~~~~~~~~~~~~ > arch/riscv/net/bpf_jit_comp64.c:1098:1: warning: control reaches end of non-void function [-Wreturn-type] > 1098 | } > | ^ > > Reported-by: kbuild test robot <lkp@...el.com> > Signed-off-by: Björn Töpel <bjorn.topel@...il.com> Applied, thanks!
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