Hi, Daniel, On Fri, Sep 2, 2022 at 9:34 PM Daniel Borkmann <daniel@xxxxxxxxxxxxx> wrote: > > On 9/1/22 4:27 AM, Tiezhu Yang wrote: > > The basic support for LoongArch has been merged into the upstream Linux > > kernel since 5.19-rc1 on June 5, 2022, this patch series adds BPF JIT > > support for LoongArch. > > > > Here is the LoongArch documention: > > https://www.kernel.org/doc/html/latest/loongarch/index.html > > > > With this patch series, the test cases in lib/test_bpf.ko have passed > > on LoongArch. > > > > # echo 1 > /proc/sys/net/core/bpf_jit_enable > > # modprobe test_bpf > > # dmesg | grep Summary > > test_bpf: Summary: 1026 PASSED, 0 FAILED, [1014/1014 JIT'ed] > > test_bpf: test_tail_calls: Summary: 10 PASSED, 0 FAILED, [10/10 JIT'ed] > > test_bpf: test_skb_segment: Summary: 2 PASSED, 0 FAILED > > > > It seems that this patch series can not be applied cleanly to bpf-next > > which is not synced to v6.0-rc3. > > For bpf-next tree this doesn't apply cleanly. Huacai, probably easier if you > take it in. Otherwise this needs rebase (and your Ack as arch maintainer), but > then there'll be merge conflict later anyway. This series can be cleanly applied on loongarch-next. So if this series is good to you, please give an Acked-by, and I will apply them to loongarch-next, thanks. Huacai > > [...] > Applying: LoongArch: Move {signed,unsigned}_imm_check() to inst.h > Applying: LoongArch: Add some instruction opcodes and formats > error: patch failed: arch/loongarch/include/asm/inst.h:18 > error: arch/loongarch/include/asm/inst.h: patch does not apply > Patch failed at 0002 LoongArch: Add some instruction opcodes and formats > [...] > > Thanks, > Daniel > > > v3: > > -- Remove CONFIG_TEST_BPF in loongson3_defconfig > > > > v2: > > -- Rebased series on v6.0-rc3 > > -- Make build_epilogue() static > > -- Use alsl.d, bstrpick.d, [ld/st]ptr.[w/d] to save some instructions > > -- Replace move_imm32() and move_imm64() with move_imm() and optimize it > > -- Add code comments to explain the considerations of conditional jump > > https://lore.kernel.org/bpf/1661857809-10828-1-git-send-email-yangtiezhu@xxxxxxxxxxx/ > > > > v1: > > -- Rebased series on v6.0-rc1 > > -- Move {signed,unsigned}_imm_check() to inst.h > > -- Define the imm field as "unsigned int" in the instruction format > > -- Use DEF_EMIT_*_FORMAT to define the same kind of instructions > > -- Use "stack_adjust += sizeof(long) * 8" in build_prologue() > > https://lore.kernel.org/bpf/1660996260-11337-1-git-send-email-yangtiezhu@xxxxxxxxxxx/ > > > > RFC: > > https://lore.kernel.org/bpf/1660013580-19053-1-git-send-email-yangtiezhu@xxxxxxxxxxx/ > > > > Tiezhu Yang (4): > > LoongArch: Move {signed,unsigned}_imm_check() to inst.h > > LoongArch: Add some instruction opcodes and formats > > LoongArch: Add BPF JIT support > > LoongArch: Enable BPF_JIT in default config > > > > arch/loongarch/Kbuild | 1 + > > arch/loongarch/Kconfig | 1 + > > arch/loongarch/configs/loongson3_defconfig | 1 + > > arch/loongarch/include/asm/inst.h | 383 ++++++++- > > arch/loongarch/kernel/module.c | 10 - > > arch/loongarch/net/Makefile | 7 + > > arch/loongarch/net/bpf_jit.c | 1160 ++++++++++++++++++++++++++++ > > arch/loongarch/net/bpf_jit.h | 282 +++++++ > > 8 files changed, 1830 insertions(+), 15 deletions(-) > > create mode 100644 arch/loongarch/net/Makefile > > create mode 100644 arch/loongarch/net/bpf_jit.c > > create mode 100644 arch/loongarch/net/bpf_jit.h > > >
