From: Demian Shulhan <demyansh@gmail.com>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
David Laight <david.laight.linux@gmail.com>,
Jakub Kicinski <kuba@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Saeed Bishara <saeed.bishara.os@gmail.com>,
Eric Biggers <ebiggers@kernel.org>,
Ard Biesheuvel <ardb@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Marco Elver <elver@google.com>, David Gow <davidgow@google.com>,
Brendan Higgins <brendan.higgins@linux.dev>,
linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org,
kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org
Subject: [PATCH v2 0/2] arm64: csum: Add fused copy and Internet checksum
Date: Sat, 14 Nov 2026 03:56:59 +0000 [thread overview]
Message-ID: <20261114040943.219870-1-demyansh@gmail.com> (raw)
Add a single-pass csum_partial_copy_nocheck() implementation for arm64
and extend the checksum KUnit suite to cover copy-and-checksum across
alignments, lengths, guard pages, and interrupt contexts.
Changes in v2:
- Drop the NEON path and separate csum-copy* files, folding the scalar
implementation directly into arch/arm64/lib/csum.c (resolves the
<asm/neon-intrinsics.h> include issue noted by Nathan Chancellor).
- Switch the scalar loop to four __uint128_t accumulators (David Laight).
- Canonicalize 0xffff (-0) to 0x0000 (+0) after csum_fold() in KUnit to
fix x86_64 test failures on zero/all-zero inputs (Jakub Kicinski).
Link: https://lore.kernel.org/r/20260927131838.6774-1-demyansh@gmail.com
Demian Shulhan (2):
arm64: csum: Add fused copy and Internet checksum
lib/tests: checksum: Add KUnit tests for csum_partial_copy_nocheck()
arch/arm64/include/asm/checksum.h | 3 +
arch/arm64/lib/csum.c | 100 ++++++++
lib/Kconfig.debug | 10 +
lib/tests/checksum_kunit.c | 410 ++++++++++++++++++++++++++++++
4 files changed, 523 insertions(+)
base-commit: 97d73c8251226cf27cc6656b4c542869bb8c69fa
--
2.53.0
next reply other threads:[~2026-11-14 4:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-14 3:56 Demian Shulhan [this message]
2026-11-14 3:57 ` [PATCH v2 1/2] " Demian Shulhan
2026-11-14 3:57 ` [PATCH v2 2/2] lib/tests: checksum: Add KUnit tests for csum_partial_copy_nocheck() Demian Shulhan
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