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 DBD9C5111BB for ; Mon, 7 Sep 2026 16:37:52 +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=1788799074; cv=none; b=KGOmaBiTwZEMuC3Sh8DQOEIGfsCW4BOUj1TlHTXKAtgyXgo2+X0bXT7J5u/hypkrdOOGy7Xt1JAHR49RptnA+9ArwRpbS4AaaGQUt7nRRlyKfeZVSG53XnvyFzFuQ0qcpINvB0QvnR3abrykEfrvUWwlTk4wFKz24MuaaTXCyIE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788799074; c=relaxed/simple; bh=xL8nbXc27K6K3JzIWcZLfCM08Hca7UMiw9iCWFD5el8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=D1tRXCkZ14a9U8Ds23TVxJFxt/Tq04s07Jhe8h5K3nWHm4obUP47DCAqGE1ryA24Er0rr241yvL0E3seMrhMKuIsmItW8ZaOqfURYt4/ERLM+EaRPsWf4kRv+CRQC0Zp+T4JECfdi+dfyottLxIDWdXwXm4REFHsGRWBQi8GFrI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cfkjQWhp; 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="cfkjQWhp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 741AB1F00A3F; Mon, 7 Sep 2026 16:37:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788799072; bh=TT541hKGyh+ei1aXxPgKteRsVAhuovdnfEyfNk8AuJ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=cfkjQWhp9Hr9trinJOMrZTL8kUPE4qIulRsdrA4igFxnzqInJt+5iW+OpPvKgJBoB OekcjCsmQ9ccOtiN0NPAiceILkd9AKrGYbvs1xX/ozYD9k6fWRjgBbsuC2+CMPTQJ5 BGxYRWzqLcSUohijRdEOHuRcAhqb+iQ5hqX52Eo9IY96wy3lFaZoNcUJce8e9XXTWE JBizLBq88E/m1CDX+svpmxjBO2+6uDJMpGLKKgECUFeQFbu97upkgHEa02Zomev47E /hiyc+tueHfPwLoCHo2YNAlowdQFrUPafjPEosSN2BkXq8dXmLcHCgBlPvci3xEKiG 9XOjp93rj/kWw== 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 v2 04/14] arm64: lib: Assume a little-endian kernel in custom library routines Date: Mon, 7 Sep 2026 17:37:15 +0100 Message-ID: <20260907163726.17104-5-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260907163726.17104-1-will@kernel.org> References: <20260907163726.17104-1-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 Commit 5276ea17a23c ("lib/crc: arm64: Assume a little-endian kernel") removed all usage of the CPU_LE()/CPU_BE() macros from the arm64 CRC assembly now that big-endian support depends on BROKEN. Do the same for the rest of the custom arm64 library code, as well as removing all usage of the '__LITTLE_ENDIAN' macro. Acked-by: Catalin Marinas Acked-by: Arnd Bergmann Acked-by: Marc Zyngier Acked-by: Eric Biggers Signed-off-by: Will Deacon --- arch/arm64/lib/csum.c | 17 ----------------- arch/arm64/lib/memchr.S | 2 +- 2 files changed, 1 insertion(+), 18 deletions(-) diff --git a/arch/arm64/lib/csum.c b/arch/arm64/lib/csum.c index 2432683e48a6..75db718e5b6a 100644 --- a/arch/arm64/lib/csum.c +++ b/arch/arm64/lib/csum.c @@ -47,11 +47,7 @@ unsigned int __no_sanitize_address do_csum(const unsigned char *buff, int len) */ shift = offset * 8; data = *ptr++; -#ifdef __LITTLE_ENDIAN data = (data >> shift) << shift; -#else - data = (data << shift) >> shift; -#endif /* * Body: straightforward aligned loads from here on (the paired loads @@ -94,13 +90,8 @@ unsigned int __no_sanitize_address do_csum(const unsigned char *buff, int len) len -= 16; ptr += 2; -#ifdef __LITTLE_ENDIAN data = tmp >> 64; sum64 = accumulate(sum64, tmp); -#else - data = tmp; - sum64 = accumulate(sum64, tmp >> 64); -#endif } if (len > 0) { sum64 = accumulate(sum64, data); @@ -112,11 +103,7 @@ unsigned int __no_sanitize_address do_csum(const unsigned char *buff, int len) * preserving odd/even alignment. */ shift = len * -8; -#ifdef __LITTLE_ENDIAN data = (data << shift) >> shift; -#else - data = (data >> shift) << shift; -#endif sum64 = accumulate(sum64, data); /* Finally, folding */ @@ -140,11 +127,7 @@ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, dst = *(const __uint128_t *)daddr->s6_addr; sum += (__force u32)htonl(len); -#ifdef __LITTLE_ENDIAN sum += (u32)proto << 24; -#else - sum += proto; -#endif src += (src >> 64) | (src << 64); dst += (dst >> 64) | (dst << 64); diff --git a/arch/arm64/lib/memchr.S b/arch/arm64/lib/memchr.S index 37a9f2a4f7f4..b14b27cb8419 100644 --- a/arch/arm64/lib/memchr.S +++ b/arch/arm64/lib/memchr.S @@ -63,7 +63,7 @@ L(byte_loop): sub srcin, srcin, #1 ret L(found_word): -CPU_LE( rev tmp, tmp) + rev tmp, tmp clz tmp, tmp sub tmp, tmp, #64 add result, srcin, tmp, asr #3 -- 2.55.0.979.g7e5102b832-goog