From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id E415F45493; Tue, 18 Jun 2024 19:41:56 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 56ED2410E3; Tue, 18 Jun 2024 19:41:55 +0200 (CEST) Received: from mail-wm1-f53.google.com (mail-wm1-f53.google.com [209.85.128.53]) by mails.dpdk.org (Postfix) with ESMTP id CDB0A402CB for ; Tue, 18 Jun 2024 19:41:54 +0200 (CEST) Received: by mail-wm1-f53.google.com with SMTP id 5b1f17b1804b1-42172ab4b60so50596955e9.0 for ; Tue, 18 Jun 2024 10:41:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1718732514; x=1719337314; darn=dpdk.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=/rr544IiwFCVF4Rvrud2KNy3YUHH24rcSU7lz9NHRKo=; b=chvNs52AQw1Hjn8iZylgG3xCW7gsXAYJ/mdm0F/CxrjWFi4Nr7ZUnplYU4imj+VOaa qq8KP2Mvd475Nyt3GFNUgQe3ZGaflM3fo//oFp/xpixrgrCNFereYzYKpeG3C5Y3Bng0 N9/wqKBrHBJfTxtJor8C9/WqMuKCgOuLWBBIXtdcrobczK0VU9Dy2SxZnaWvlUF8j/v2 4HMVsp5BqSDsKb0vWRgGBeH2o4q/6Hrbvo4bXh4B2NolEPfn2nEPl0N2ZQGWZ1IwsZYL 5cGp0bz7HSFHEGWhNYaCBrbNqzkmAyjj8mBDHXjVngT2vAA8cQ5/ls9sPskJGKK5VZGY IBGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718732514; x=1719337314; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=/rr544IiwFCVF4Rvrud2KNy3YUHH24rcSU7lz9NHRKo=; b=Uu/dRu2lH4nKXJlLmD2RBCx+7261dt7KUaHj65IYi7O8JD0NBDNksrBoY/4tOcAobM yjehS/pZeqa0kNpItgVd8FtVi7qb9tkK5wiU/xw5tSE2TWYfI/vDHVWHpqEBlO9OIyGX Q9NpjHb5bo6pNjTKLhoUXbn1JujP70xXz2NrKz7JbLFJpZRrKQhfbJTkzvc1i2YhpQ3E NLYWoU/W+wfp+CvoJhUF2vDcAlPah+qhORvkajoar5GKYy7u3XHg6fgB4jHeTsmdHZVR ttZbb6evqkwtOFsAOw6+u3qnyWudF6juvftt9GcI4sqTOAP3r7/vDwllaA6zlzxG4RsJ AlpA== X-Gm-Message-State: AOJu0Yx5doRNmN8Ub8AN1qqxl9rNoQMMZvqmMEV0Q+L3xYep1aUH68oh f9dk1wSYD0wmtgNAoona0GzfG67796d+lqfGg4V8r+8UhyxGy9QLtDrtMtOKQS4= X-Google-Smtp-Source: AGHT+IGpweOEKAcoyIQRZG60V7JntFO6Pat0g1TEVoD/iQ8fIo6cVCNc1WPNboUFTa6w8MlXUrvyuQ== X-Received: by 2002:a05:600c:4907:b0:422:5c5d:1b92 with SMTP id 5b1f17b1804b1-4247507a17bmr1447085e9.3.1718732514519; Tue, 18 Jun 2024 10:41:54 -0700 (PDT) Received: from C02FF2N1MD6T.bytedance.net ([79.173.157.19]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3609d95bc02sm3211334f8f.18.2024.06.18.10.41.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jun 2024 10:41:54 -0700 (PDT) From: Daniel Gregory To: Stanislaw Kardach , Bruce Richardson Cc: dev@dpdk.org, Liang Ma , Punit Agrawal , Pengcheng Wang , Chunsong Feng , Daniel Gregory Subject: [PATCH 1/5] config/riscv: add flag for using Zbc extension Date: Tue, 18 Jun 2024 18:41:29 +0100 Message-Id: <20240618174133.33457-2-daniel.gregory@bytedance.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20240618174133.33457-1-daniel.gregory@bytedance.com> References: <20240618174133.33457-1-daniel.gregory@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org The RISC-V Zbc extension adds carry-less multiply instructions we can use to implement more efficient CRC hashing algorithms. Signed-off-by: Daniel Gregory --- config/riscv/meson.build | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/config/riscv/meson.build b/config/riscv/meson.build index 07d7d9da23..4bda4089bd 100644 --- a/config/riscv/meson.build +++ b/config/riscv/meson.build @@ -26,6 +26,13 @@ flags_common = [ # read from /proc/device-tree/cpus/timebase-frequency. This property is # guaranteed on Linux, as riscv time_init() requires it. ['RTE_RISCV_TIME_FREQ', 0], + + # Use RISC-V Carry-less multiplication extension (Zbc) for hardware + # implementations of CRC-32C (lib/hash/rte_crc_riscv64.h), CRC-32 and CRC-16 + # (lib/net/net_crc_zbc.c). Requires intrinsics available in GCC 14.1.0+ and + # Clang 18.1.0+ + # Make sure to add '_zbc' to your target's -march below + ['RTE_RISCV_ZBC', false], ] ## SoC-specific options. -- 2.39.2