diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/loongarch/configs/loongson3_defconfig | 1 | ||||
-rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 2 | ||||
-rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 47 |
3 files changed, 23 insertions, 27 deletions
diff --git a/arch/loongarch/configs/loongson3_defconfig b/arch/loongarch/configs/loongson3_defconfig index 9c333d133c30..60e331af9839 100644 --- a/arch/loongarch/configs/loongson3_defconfig +++ b/arch/loongarch/configs/loongson3_defconfig @@ -276,7 +276,6 @@ CONFIG_BRIDGE_EBT_T_NAT=m CONFIG_BRIDGE_EBT_ARP=m CONFIG_BRIDGE_EBT_IP=m CONFIG_BRIDGE_EBT_IP6=m -CONFIG_BPFILTER=y CONFIG_IP_SCTP=m CONFIG_RDS=y CONFIG_L2TP=m diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 7f0a7b97ef4c..b418333bb086 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -779,7 +779,7 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i, bool extra_pass, u32 stack_depth) { struct bpf_insn *insn = &fp->insnsi[i]; - s16 branch_oc_off = insn->off; + s32 branch_oc_off = insn->off; u32 dst_reg = insn->dst_reg; u32 src_reg = insn->src_reg; int last, insn_count = 1; diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index bdacbb84456d..fe30b9ebb8de 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -307,6 +307,25 @@ static void pop_callee_regs(u8 **pprog, bool *callee_regs_used) *pprog = prog; } +static void emit_nops(u8 **pprog, int len) +{ + u8 *prog = *pprog; + int i, noplen; + + while (len > 0) { + noplen = len; + + if (noplen > ASM_NOP_MAX) + noplen = ASM_NOP_MAX; + + for (i = 0; i < noplen; i++) + EMIT1(x86_nops[noplen][i]); + len -= noplen; + } + + *pprog = prog; +} + /* * Emit the various CFI preambles, see asm/cfi.h and the comments about FineIBT * in arch/x86/kernel/alternative.c @@ -385,8 +404,7 @@ static void emit_prologue(u8 **pprog, u32 stack_depth, bool ebpf_from_cbpf, /* BPF trampoline can be made to work without these nops, * but let's waste 5 bytes for now and optimize later */ - memcpy(prog, x86_nops[5], X86_PATCH_SIZE); - prog += X86_PATCH_SIZE; + emit_nops(&prog, X86_PATCH_SIZE); if (!ebpf_from_cbpf) { if (tail_call_reachable && !is_subprog) /* When it's the entry of the whole tailcall context, @@ -692,8 +710,7 @@ static void emit_bpf_tail_call_direct(struct bpf_prog *bpf_prog, if (stack_depth) EMIT3_off32(0x48, 0x81, 0xC4, round_up(stack_depth, 8)); - memcpy(prog, x86_nops[5], X86_PATCH_SIZE); - prog += X86_PATCH_SIZE; + emit_nops(&prog, X86_PATCH_SIZE); /* out: */ ctx->tail_call_direct_label = prog - start; @@ -1055,25 +1072,6 @@ static void detect_reg_usage(struct bpf_insn *insn, int insn_cnt, } } -static void emit_nops(u8 **pprog, int len) -{ - u8 *prog = *pprog; - int i, noplen; - - while (len > 0) { - noplen = len; - - if (noplen > ASM_NOP_MAX) - noplen = ASM_NOP_MAX; - - for (i = 0; i < noplen; i++) - EMIT1(x86_nops[noplen][i]); - len -= noplen; - } - - *pprog = prog; -} - /* emit the 3-byte VEX prefix * * r: same as rex.r, extra bit for ModRM reg field @@ -2700,8 +2698,7 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *rw_im /* remember return value in a stack for bpf prog to access */ emit_stx(&prog, BPF_DW, BPF_REG_FP, BPF_REG_0, -8); im->ip_after_call = image + (prog - (u8 *)rw_image); - memcpy(prog, x86_nops[5], X86_PATCH_SIZE); - prog += X86_PATCH_SIZE; + emit_nops(&prog, X86_PATCH_SIZE); } if (fmod_ret->nr_links) { |