From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AB673C982DF for ; Fri, 18 Sep 2026 14:52:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=RnutA+SVEPQhig+pWBctSm0lXzVfwP4aZM5FopJbHtE=; b=aFmLfiyDMtaLWFvcXjPMCAvrgH HVG5OqiBoK3X7m4qCbqxmvy+jUCVAHxtd4XgudgNbjspX07Wu2UJUNiWO+vVQeusxCgvgPBHZzy82 79RIGFgm35AgetbJR8SoAy4dXN/blvOU9fduytq2vobjx67byKncBrbWHBWTwBue5Am1jm4lUMTAZ 1NqmwVGlwQSwlCh1MAQ5oc/kyp1Ko080/UcpUOS/fi0yFL7oLsAQipuIE6CGYpRnMMvG3fmHT5PuC YDls50RsqUejaRfA9VraxAFGNht7TonsNysdLYqJaJSU/MHoSsUrFvH/SgQ1kr2tFdyOni46//3Ye 8arJQhfg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7Zx3-0000000EmI3-1iiP; Fri, 18 Sep 2026 14:52:33 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7Zx1-0000000EmHJ-2NOX for linux-arm-kernel@lists.infradead.org; Fri, 18 Sep 2026 14:52:31 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 097C86053D; Fri, 18 Sep 2026 14:52:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 434281F0089A; Fri, 18 Sep 2026 14:52:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789743150; bh=RnutA+SVEPQhig+pWBctSm0lXzVfwP4aZM5FopJbHtE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=NVHbzjhCKBzFJ93rW2N72ADw2QOi2UOdtdCn8dgyKgGKczC3D02G0QfqTKYT2Cnjt IjZWGBwGHNhEHimgXtJIyfYXtUps3sQrWR3agnXu3hSTCXKi+TLH/jBX0s0k8oFRUH Hh51/9NoGJuuIKYU7tYBnFZX6V7eAYgZj0FYxoA/KOkCJ3raG+RxX1edGI6BYoJvXN jwOtIbWpcUrdmbiDDhpms002VfnT3A2X6Lb6UlRyoNHNv/bkPbq8Lh6WXbaVaGutWt G+BmJFWDau9OaFaahLjKJGss478HL7ReG86HEtSHBqlkuH5qNd76tWF4/ZSnCfJrnM EfZFxcoEo2xwQ== From: Will Deacon To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Will Deacon , Arnd Bergmann , Ard Biesheuvel , Eric Biggers , Daniel Borkmann , Catalin Marinas , Alexei Starovoitov , Oliver Upton , Herbert Xu , Marc Zyngier Subject: [PATCH v3 02/13] arm64: bpf: Remove big-endian support from the JIT compiler Date: Fri, 18 Sep 2026 15:52:04 +0100 Message-ID: <20260918145217.1669-3-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260918145217.1669-1-will@kernel.org> References: <20260918145217.1669-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Big-endian support on arm64 depends on BROKEN. In preparation for removing the dead code altogether, remove the big-endian-specific support from the arm64 BPF JIT backend. Acked-by: Catalin Marinas Acked-by: Arnd Bergmann Acked-by: Marc Zyngier Acked-by: Eric Biggers Acked-by: Alexei Starovoitov Signed-off-by: Will Deacon --- arch/arm64/net/bpf_jit_comp.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index c18e005a41db..a5634428fdd5 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -1439,13 +1439,8 @@ static int build_insn(const struct bpf_verifier_env *env, const struct bpf_insn case BPF_ALU | BPF_END | BPF_FROM_LE: case BPF_ALU | BPF_END | BPF_FROM_BE: case BPF_ALU64 | BPF_END | BPF_FROM_LE: -#ifdef CONFIG_CPU_BIG_ENDIAN - if (BPF_CLASS(code) == BPF_ALU && BPF_SRC(code) == BPF_FROM_BE) - goto emit_bswap_uxt; -#else /* !CONFIG_CPU_BIG_ENDIAN */ if (BPF_CLASS(code) == BPF_ALU && BPF_SRC(code) == BPF_FROM_LE) goto emit_bswap_uxt; -#endif switch (imm) { case 16: emit(A64_REV16(is64, dst, dst), ctx); @@ -2559,15 +2554,9 @@ static void clear_garbage(struct jit_ctx *ctx, int reg, int effective_bytes) { if (effective_bytes) { int garbage_bits = 64 - 8 * effective_bytes; -#ifdef CONFIG_CPU_BIG_ENDIAN - /* garbage bits are at the right end */ - emit(A64_LSR(1, reg, reg, garbage_bits), ctx); - emit(A64_LSL(1, reg, reg, garbage_bits), ctx); -#else /* garbage bits are at the left end */ emit(A64_LSL(1, reg, reg, garbage_bits), ctx); emit(A64_LSR(1, reg, reg, garbage_bits), ctx); -#endif } } -- 2.55.0.1082.g2b9226bbc0-goog