From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5F49448B83 for ; Tue, 11 Aug 2026 14:01:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786456906; cv=none; b=nOU1B88dPIew7iUzilWDnkiiaJ661Wv6A9Oo5dzPk/fBixKmKu5WZDhODAPMpqAvMm9EhG41JrG0zCId+gCQOQ++5KH6bpUJhAfuZ6Us3vYiZ4lGS5MUrBbwt+z1ZKtqvvMtRwqEjow1xDXpNm4Q4suqfvN0WFZ1qEO7q+n+/C8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786456906; c=relaxed/simple; bh=ObbwZhybPHV+OJQ7Fv4s4sZz1QJjKyvPjRJtAsWVhJU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bxdFlxoRvY0azw0Y8dJaCvRC5NwUshqBzBr1UNSGJKNv4So0wZfG5zDgHC2PCMFspaba36xsYmPBUl+FSUGkOdyszL6CME56MqDm/71W2bOMDU4tuSUIbllKbwa2XER9Zh/pkd0p0XMsX8vXBgknGHy9P5XJ7uiB2i7/ZRdZjFI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZTZG9dqN; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZTZG9dqN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 600DE1F00A3E; Tue, 11 Aug 2026 14:01:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786456905; bh=QAN0l7yaydmlw2Fkf5Tw2odDTeok7Wk3+KXsmI6pBNc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZTZG9dqNeXmloyamvDBCjoTZjYp+h4HLwHk3qphnHwHXV7i23kF8ZbQT6BOvovJ7J Zx1DPOnrTuPmbKCGfMYhu4d+VwRrNmmgIHBo37EgVeC+J+05O6InEmetwXNFpKCecy eN6LmOn6BXFzqst6QRJahAbi91lV7MFLWvK7YDHREmt16h8ara+G4lXkelTFpsfDGc usXatHN9zi1NrgdogqlxadKEdkBN9wjMq1W8zNLeUCUMkSOfi8rDxmA3WzE+ctIeeM zHl4da3iOFP++E9ie1luQcF99eKsN4bBuWHbTPFAL5jjU/bmOVjxsAdHZWyrvnNgGZ Gi70FiyNezPhQ== 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 02/12] arm64: bpf: Remove big-endian support from the JIT compiler Date: Tue, 11 Aug 2026 15:01:21 +0100 Message-ID: <20260811140132.22778-3-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260811140132.22778-1-will@kernel.org> References: <20260811140132.22778-1-will@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. 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 b0075ece4a6e..044216c4acf6 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -1377,13 +1377,8 @@ 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); @@ -2478,15 +2473,9 @@ 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 } } -- 2.55.0.679.g6767b8d81c-goog