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[83.175.177.170]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-49c609c602dsm8488670f8f.46.2026.11.13.20.09.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Nov 2026 20:09:44 -0800 (PST) From: Demian Shulhan To: Catalin Marinas , Will Deacon Cc: Mark Rutland , David Laight , Jakub Kicinski , Nathan Chancellor , Saeed Bishara , Eric Biggers , Ard Biesheuvel , Robin Murphy , Andrew Morton , Marco Elver , David Gow , Brendan Higgins , 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 Message-ID: <20261114040943.219870-1-demyansh@gmail.com> X-Mailer: git-send-email 2.53.0 X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261113_200947_782488_A552B4E3 X-CRM114-Status: UNSURE ( 8.94 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.1 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_GMAIL_RCVD, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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 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