On Thu, Jul 24, 2025 at 08:30:35AM -0700, Vincent Li wrote: > On Thu, Jul 24, 2025 at 7:19 AM Chenghao Duan <duanchenghao@xxxxxxxxxx> wrote: > > > > v4: > > 1. Delete the #3 patch of version V3. > > > > 2. Add 5 NOP instructions in build_prologue(). > > Reserve space for the move_imm + jirl instruction. > > > > 3. Differentiate between direct jumps and ftrace jumps of trampoline: > > direct jumps skip 5 instructions. > > ftrace jumps skip 2 instructions. > > > > 4. Remove the generation of BL jump instructions in emit_jump_and_link(). > > After the trampoline ends, it will jump to the specified register. > > The BL instruction writes PC+4 to r1 instead of allowing the > > specification of rd. > > > > ----------------------------------------------------------------------- > > Historical Version: > > v3: > > 1. Patch 0003 adds EXECMEM_BPF memory type to the execmem subsystem. > > > > 2. Align the size calculated by arch_bpf_trampoline_size to page > > boundaries. > > > > 3. Add the flush icache operation to larch_insn_text_copy. > > > > 4. Unify the implementation of bpf_arch_xxx into the patch > > "0004-LoongArch-BPF-Add-bpf_arch_xxxxx-support-for-Loong.patch". > > > > 5. Change the patch order. Move the patch > > "0002-LoongArch-BPF-Update-the-code-to-rename-validate_.patch" before > > "0005-LoongArch-BPF-Add-bpf-trampoline-support-for-Loon.patch". > > > > URL for version v3: > > https://lore.kernel.org/all/20250709055029.723243-1-duanchenghao@xxxxxxxxxx/ > > --------- > > v2: > > 1. Change the fixmap in the instruction copy function to set_memory_xxx. > > > > 2. Change the implementation method of the following code. > > - arch_alloc_bpf_trampoline > > - arch_free_bpf_trampoline > > Use the BPF core's allocation and free functions. > > > > - bpf_arch_text_invalidate > > Operate with the function larch_insn_text_copy that carries > > memory attribute modifications. > > > > 3. Correct the incorrect code formatting. > > > > URL for version v2: > > https://lore.kernel.org/all/20250618105048.1510560-1-duanchenghao@xxxxxxxxxx/ > > --------- > > v1: > > Support trampoline for LoongArch. The following feature tests have been > > completed: > > 1. fentry > > 2. fexit > > 3. fmod_ret > > > > TODO: The support for the struct_ops feature will be provided in > > subsequent patches. > > > > URL for version v1: > > https://lore.kernel.org/all/20250611035952.111182-1-duanchenghao@xxxxxxxxxx/ > > ----------------------------------------------------------------------- > > > > Chenghao Duan (4): > > LoongArch: Add larch_insn_gen_{beq,bne} helpers > > LoongArch: BPF: Update the code to rename validate_code to > > validate_ctx > > LoongArch: BPF: Add bpf_arch_xxxxx support for Loongarch > > LoongArch: BPF: Add bpf trampoline support for Loongarch > > > > Tiezhu Yang (1): > > LoongArch: BPF: Add struct ops support for trampoline > > > > arch/loongarch/include/asm/inst.h | 3 + > > arch/loongarch/kernel/inst.c | 60 ++++ > > arch/loongarch/net/bpf_jit.c | 521 +++++++++++++++++++++++++++++- > > arch/loongarch/net/bpf_jit.h | 6 + > > 4 files changed, 589 insertions(+), 1 deletion(-) > > > > -- > > 2.25.1 > > > > Tested the whole patch series and it resolved the xdp-tool xdp-filter issue > > [root@fedora ~]# xdp-loader status > CURRENT XDP PROGRAM STATUS: > > Interface Prio Program name Mode ID Tag > Chain actions > -------------------------------------------------------------------------------------- > lo xdp_dispatcher skb 53 4d7e87c0d30db711 > => 10 xdpfilt_alw_all 62 > 320c53c06933a8fa XDP_PASS > dummy0 <No XDP program loaded!> > sit0 <No XDP program loaded!> > enp0s3f0 <No XDP program loaded!> > wlp3s0 <No XDP program loaded!> > > you can add Tested-by: Vincent Li <vincent.mc.li@xxxxxxxxx> Hi Vincent, Okay, thank you very much for your support. The existing patch has included "Tested-by: Vincent Li vincent.mc.li@xxxxxxxxx". Brs Chenghao
