diff options
| -rw-r--r-- | arch/loongarch/net/bpf_jit.c | 15 | ||||
| -rw-r--r-- | arch/loongarch/net/bpf_jit.h | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c index b20ecc326a38..ceb7939088cd 100644 --- a/arch/loongarch/net/bpf_jit.c +++ b/arch/loongarch/net/bpf_jit.c @@ -559,6 +559,15 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, bool ext /* dst = src */ case BPF_ALU | BPF_MOV | BPF_X: case BPF_ALU64 | BPF_MOV | BPF_X: + if (insn_is_cast_user(insn)) { + move_reg(ctx, t1, src); + emit_zext_32(ctx, t1, true); + move_imm(ctx, dst, (ctx->user_vm_start >> 32) << 32, false); + emit_insn(ctx, beq, t1, LOONGARCH_GPR_ZERO, 1); + emit_insn(ctx, or, t1, dst, t1); + move_reg(ctx, dst, t1); + break; + } switch (off) { case 0: move_reg(ctx, dst, src); @@ -1955,6 +1964,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) memset(&ctx, 0, sizeof(ctx)); ctx.prog = prog; ctx.arena_vm_start = bpf_arena_get_kern_vm_start(prog->aux->arena); + ctx.user_vm_start = bpf_arena_get_user_vm_start(prog->aux->arena); ctx.offset = kvcalloc(prog->len + 1, sizeof(u32), GFP_KERNEL); if (ctx.offset == NULL) { @@ -2110,6 +2120,11 @@ bool bpf_jit_bypass_spec_v4(void) return true; } +bool bpf_jit_supports_arena(void) +{ + return true; +} + /* Indicate the JIT backend supports mixing bpf2bpf and tailcalls. */ bool bpf_jit_supports_subprog_tailcalls(void) { diff --git a/arch/loongarch/net/bpf_jit.h b/arch/loongarch/net/bpf_jit.h index 8816ac106f2f..a8e29be35fa8 100644 --- a/arch/loongarch/net/bpf_jit.h +++ b/arch/loongarch/net/bpf_jit.h @@ -21,6 +21,7 @@ struct jit_ctx { union loongarch_instruction *ro_image; u32 stack_size; u64 arena_vm_start; + u64 user_vm_start; }; struct jit_data { |