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bpf, mips: Fix comment on tail call count limiting 

In emit_tail_call() of bpf_jit_comp32.c, "blez t2" (t2 <= 0) is
not consistent with the comment "t2 < 0", update the comment to
keep consistency.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Link: https://lore.kernel.org/bpf/1633915150-13220-3-git-send-email-yangtiezhu@loongson.cn
This commit is contained in:
Tiezhu Yang 2021-10-11 09:19:10 +08:00 committed by Daniel Borkmann
parent 307d149d94
commit 431bfb9ee3
1 changed files with 1 additions and 1 deletions
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2
arch/mips/net/bpf_jit_comp32.c
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@ -1315,7 +1315,7 @@ static int emit_tail_call(struct jit_context *ctx)
/* if (TCC-- <= 0) goto out */
emit(ctx, lw, t2, ctx->stack_size, MIPS_R_SP); /* t2 = *(SP + size) */
emit_load_delay(ctx); /* Load delay slot */
emit(ctx, blez, t2, get_offset(ctx, 1)); /* PC += off(1) if t2 < 0 */
emit(ctx, blez, t2, get_offset(ctx, 1)); /* PC += off(1) if t2 <= 0 */
emit(ctx, addiu, t2, t2, -1); /* t2-- (delay slot) */
emit(ctx, sw, t2, ctx->stack_size, MIPS_R_SP); /* *(SP + size) = t2 */