From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=74.125.229.5 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794248961; b=IzpfNqduWlFsUiDIzoACLPjVzvSwwjWIwFgpvTmvWOEZkxEuPKN7gnZoetyjrlwuL+hI ygLLgKWCoCr6W6iendYZNyK7HsEe3HOJidPcX7bHTrC6MplYPZNDLULWpzmIpn6WMBIzE h2syok+3bN+uk5LirtrAopYd57Hcom0khEEM2K1sV0D7aoqPsQNr1hJZSnkAyTHeU5wCL C6Q1ENlkLhy69TolYaOL/wa4ctAff/MJOGJeVY6OS6kcebaschH8toMHALs2bO8XPkrf4 FaD2WJRuIf9nDGE9AjZ0Yk/s9zI1eNLdo4cK0WVL4pTMncIAOZGGvcj9UdGJ1ei88tA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794248961; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: Date:Message-ID:From:To:Cc:In-Reply-To:Subject:Content-Type; bh=TyNlOaE6r53YabDf7NgKAHxeTjKkEmLPqy6LNOwpSOw=; b=mWvcg9WFMLVn7cKz240SLUXcW8ZECo1ik/O1iIKnhPIYsG0JkLc51DYKI1MBOmbYtpFe 11BNlSr5R7x0xCgiOg9IyxmFcydbYLCV5NYGBCgv/T+A8i7UAh5faOejiOne9BKmZBKN4 5AeKKms/Z4IOYuSTjV1Wzq4pXFE68vsLWcp8nfRfRQH86oNshWsS1YKNW8GItdJ5+gXb+ nBHZ57bwNZsYqyRBNX5IJTPXVXIfvy+Uu+5O1uYizB6beuqjbynW7FnRvceNgvJvebSgL A9weEGX6htTa6Lz6kfH+oleI0yMAkMwNQ+8SImUagiGA4O0iFHGr/8y24ivUWfhqpAw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=wVPmauA8; arc=none smtp.remote-ip=74.125.229.5 Received: from mail-dy2-f5.google.com (mail-dy2-f5.google.com [74.125.229.5]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFD18606A5C8 for ; Mon, 9 Nov 2026 18:29:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org DFD18606A5C8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=wVPmauA8 Received: by mail-dy2-f5.google.com with SMTP id 5a478bee46e88-36f936424f2so503281eec.1 for ; Mon, 09 Nov 2026 10:29:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1794248960; x=1794853760; darn=vger.kernel.org; h=content-type:subject:in-reply-to:cc:to:from:message-id:date:from:to :cc:subject:date:message-id:reply-to:content-type; bh=TyNlOaE6r53YabDf7NgKAHxeTjKkEmLPqy6LNOwpSOw=; b=wVPmauA8OdLBNUi//iUcElADcRibZhBlYmRzMsqGWZwocRzhlB8pAEZUyTVONutmzP YHGl7m7d5gmKZ+kHy+amcdGR0AdGQnPC70uqhqLev+qT0zS5gLE0OQedk71PD93HuDHe d4AmF+8Op5QqLeFTRnHezx/ld31iyUN1GiwdR9gI83FoQB/p3kN+M6POA5UihECgoHE8 nuCiIhx0et4FR8tdMwbyimQJYCdpUxlrmR1+YMHy6otayeUpxcz8AVkru0zzf6Ais/I4 VVUtRfQ+Vg5feQX7YYsyKpySiIOvAMZA1iGgR5VhnDI5k3Uv8f3/btggB3XTDbZErZLZ HL3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794248960; x=1794853760; h=content-type:subject:in-reply-to:cc:to:from:message-id:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=TyNlOaE6r53YabDf7NgKAHxeTjKkEmLPqy6LNOwpSOw=; b=c1H7iNbPF82cMK1ievSPqUSBGTD4OcT6tJ97/3Tdrfr8a+1NAVmJuuNj715u0zN9p8 aDfWinkNo45pTKc5nk59WpnppzcTnJw3iyb2x6X65TlpBX+NLTo4/sI67bRoy4jsxgEP OPiKV+/Pd6IkaPLOZQMCDIznQO8EzExacFfo2hv67XuZA6xFlPV+tJ3I5+LgJgjGlhGB wxjj/6rCjqm1kV1Q60ZN/zORjUkUvacz8ZGReik01SQ/vE41Ul7qqwW1/RTOi/uTyCa3 AKk8SLP0wwvL6H4ckI2SeXECEgTVDtNzgYoHC8xq/QpqXvWzc2X3zj7sk+a9N0GgOJfJ U1EA== X-Forwarded-Encrypted: i=1; AL+hErE0o770k5tpbcqSeKFu0m7RC6Kuv/dog+9Cex6vmZ4PdqOLeWYIMwZAHBqErEbpka8AEQgsW1fwFuzDgkJBpyw=@vger.kernel.org X-Gm-Message-State: APuU4Z9jZVUamc8mhlWI3fWcFvaIIrbemQHd4KHKhkDFe2OZ9/gwhJrG eW5ealpgYjKCDhQSGUFFy8ZdLO73yL8M2+zIMBLKUAyeFR1mh/RfNdpX X-Gm-Gg: AYBFou0tTscSWBgXBWovWWsJX1TIJbcCas2FWEXJUXrARNtoqwEamYfvDR/cXyniXPF iBnAUJkF4XmyeITWVDEU6EjzGBRolstN9sxn4dXw3AG7QJ8Za0zLT8SbiJ3e+UIe5tPaNL5Y4QX 7Os//ge8BA+itt0GNOqqvZe65JWOKUdFjHDiram3MAQ611s8RbV7fiABh5C/RCQvvIMVNsgF6l4 JzhkY7nwPbdhPaGE5wfrp7Du6A1dIJkFsX/mnKmKnvhIQr0MwZLg5PsNKRV2LlgZy7It0rEuWUj tS2FRPl8C2eZbnARack8KgyVCB5NX+CMFUAb9anzFgr1rVro0KRyXU/nzsDzYfOaCG50GdCxB+f i3th5I+XP0D3xFF+uPK00X41P2eyKVPJ73hIlD9NaoWUAoH9Lr9G/+3IQv8IYLJpdLP+a8671+1 PXzb3uQjjM61YGpHOLF+PX+AFPVnaXx4uQLLAHUwpW9qDL7H4jORq2M4tDp7qzeIGsseirMj6/0 AuIIRD6iGi8WmFctw2CtiFWJgzWGXNei+J9EL4nGu0X5dXs/eXcapLLuhCmhWnOIjAQYbLPjEov PVoh/F5SHNB7aAkvUBWdf/w= X-Received: by 2002:a05:7300:e9dc:10b0:36d:3c0f:cc85 with SMTP id 5a478bee46e88-3751c82b5e5mr145592eec.5.1794248960011; Mon, 09 Nov 2026 10:29:20 -0800 (PST) Received: from localhost ([2a03:2880:9ff:41::]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-37520512ec1sm99440eec.12.2026.11.09.10.29.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Nov 2026 10:29:19 -0800 (PST) Date: Mon, 09 Nov 2026 10:29:18 -0800 Message-ID: <8025f6aed4bc33298e8be50280ab72e4@gmail.com> From: Stanislav Fomichev To: netdev-bot+sashiko@kernel.org Cc: netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew+netdev@lunn.ch, edumazet@kernel.org, horms@kernel.org, corbet@lwn.net, skhan@linuxfoundation.org, rdunlap@infradead.org, michael.chan@broadcom.com, pavan.chebbi@broadcom.com, saeedm@nvidia.com, tariqt@nvidia.com, mbloch@nvidia.com, alexanderduyck@fb.com, kernel-team@meta.com, sdf@fomichev.me, dimitri.daskalakis1@gmail.com, almasrymina@google.com, dtatulea@nvidia.com, bobbyeshleman@meta.com, asml.silence@gmail.com, daniel@iogearbox.net, razor@blackwall.org, leitao@debian.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kselftest@vger.kernel.org, leon@kernel.org In-Reply-To: <179418738174.994134.464817117967884735@kernel.org> Subject: Re: Re: [PATCH net-next v3 7/9] net/mlx5e: lift the netmem TX frag size limit Content-Type: text/plain; charset="utf-8" X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > [Severity: Low] > Is U32_MAX really the largest length an mlx5 data segment can describe? > The commit message says: > > TX data segments have a 32-bit byte count, so devmem TX frags don't > need a size limit. > > Bit 31 of byte_count looks like it is the inline segment marker rather > than part of the length: [..] > Would a value that matches the hardware, such as (1U << 31) - 1 or SZ_1G, > work better here? The commit message would need updating to match. Let me switch to SZ_1G to be 100% safe. --- pw-bot: cr