From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 411FE347C6 for ; Mon, 29 Dec 2025 16:18:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767025119; cv=none; b=gBDJRo8cLaRF8+IRZRij8NDdOtEv/H5JI9Zo3mGDNrdfWiU1S443LLHIt1xC0GFUNxcK31kXp5kMoj+CDSW2qpfcMchCr5FpUnsNeV+HO7V0nwn6BxoL8KHzmE0VGuoQVIeSz6TrWq/S1nHzAezUzgdIi/7PdUhFWolGBU6xhE0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767025119; c=relaxed/simple; bh=TBwYFWTz2ztev5/32wN0RyFjZratpdCxrc9vTXfxWms=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=scUgBj2WUcB0HEw3OFjp4Qy2kCCvIcVV3yZ5kfINq8RowBIi/oilE5OSH8AQMQnxTI0xODBgupe0kHgmmq/PE21zJLlW2+U8PPNQHpuU7S/XmKkh37OYycewS/deCOlBTuOxP9RQB+QicGNh7+8J72TIiEtclDP0aU4a7pfJXxw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=iUmxGmsw; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b=ErNgOxFi; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="iUmxGmsw"; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b="ErNgOxFi" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1767025114; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=TBwYFWTz2ztev5/32wN0RyFjZratpdCxrc9vTXfxWms=; b=iUmxGmswe93mYq++ZAdClRqqkyzxMvMXCsgQzg1D2nzytkmMbqTxORdamflYWMrlbYq1TW lAT2KJAhNepDYeNIczAfVvfrQVCedHVvuA1j+E3ZYnxyyQNuc8FRv0tP9jxWBQLbCALIcz /cxUIYQLU+UEnhWYgcUzCchMEikqGS0= Received: from mail-qk1-f199.google.com (mail-qk1-f199.google.com [209.85.222.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-5-Kaxd-e9VPNSUZzFusctzQQ-1; Mon, 29 Dec 2025 11:18:33 -0500 X-MC-Unique: Kaxd-e9VPNSUZzFusctzQQ-1 X-Mimecast-MFC-AGG-ID: Kaxd-e9VPNSUZzFusctzQQ_1767025112 Received: by mail-qk1-f199.google.com with SMTP id af79cd13be357-8b245c49d0cso2232302885a.3 for ; Mon, 29 Dec 2025 08:18:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=google; t=1767025112; x=1767629912; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=TBwYFWTz2ztev5/32wN0RyFjZratpdCxrc9vTXfxWms=; b=ErNgOxFiW5sJDByM4uFF9hqTlQ3xHJy0BKqNZdriMSjI2mqPBgxpZAAP3u4gz2T9V8 E2rhUc1DJvmOYHfAS22aWoBoX8Dt9uIC309d47wrIAH5LkSwIlyBnHRCZktLvAR+IqBP boZ3wWnmyABXdvoc7VsB7nln0RwBOr+gwS0zd3FjSqiAFqs+2uJe4iuIm3NKoW5YbOS4 4rjLLi6gtl8A5UC9IqLU5jMikAjx8DtoKp4Ei/wQano3MlyCek7cvFkfYH14K8EO8dya fkb+WloSHY0VIiFrXnYkMdDZy2Z7ataSCOSqqB6lBJ2lNpJXG+Jwfz2PbdmX4439a7Md RMaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767025112; x=1767629912; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=TBwYFWTz2ztev5/32wN0RyFjZratpdCxrc9vTXfxWms=; b=Z3tgn5MimdNMhrexUow0JzzWl+lZVhxE4Uf/zGKun6t+gZbtbZeP/4YQQ5gsPRfX8S jzIbpoRQlqL3lyLy+EwKcoNoeEizeBBBIq7BHiQMcV9DOQBViNs06Z0dKGwaX7NvpSHJ vOvMC/cNC/laQErZrstu2ieeUkhtvk8uHLu2K+4W54Ue+t1Xx4//2zq2q6R92wMPAVLr 7M1c/8u5qqh9jdsuJos24/0UfukRpwD8U3+E2veoWYRKsXfVqbj/HiB8D8PsYorN9xAu rkNaR0n/fndfWZZubussUiDBd/4HhvwXwqaa+erACgJimzfmtDdMV9L4EJIVmigiNfNm sXUg== X-Forwarded-Encrypted: i=1; AJvYcCUqHq4W7iZL/NozKzGe3bNY6QCVnYx9gtQe68XTW/2stAd0enSjlrzE4NnZ2DZr8Qnd2G4jPH4dDd8m6H8=@vger.kernel.org X-Gm-Message-State: AOJu0YxjjXB/KE6QvQ+fYVdxrsYKpJ46qHgag9QSDd1O4o8zF+sI122S Ga5stRacwKYnhPzen0qSg98mkrTJgPyHvoQ9og91ZavyjMY8DHGzZncSu9e3GJQShacHQ6Px5MY w1J8oa2KqCWPCIouS0c5bZ1i5TgpT/5OwPZfLaUXl9ahJHocLIvhS94Gmu5D3/4M/fA== X-Gm-Gg: AY/fxX7ADTiFA7/8LTVUHiYUtnUujPf2jJ7xrouUOOAm7XlFyc+wYoIx7pNreq6IEne +ZfFqEFL624ym14Oozhr8A9tG9BWKAKTca+OSkffuwJcbWA7mQz96MsiQhV/IaLP/r6UuF4Zw1Z U1UoIFD+fjPrW1U6PLckZHLFJeMvvmD4zCrUlflO3/a//ugEI6SZtoGKu/kZobcUE0FCYzGlo3M dWxtHyBykkPTQHYWsUriP6var7WTtKJHWV/xkWwQSp6tF9X5wX9N6MYmoPTTSoXNyQwo64Z9mWC sMw0whk7rhsvFCKQn8mGnJGeTqjLqI1A5/SVjZwS2+e0U0OlKfJSH89KbAzqfrAPoSywg9jxRsM HgYkJPCJE6C9yUA== X-Received: by 2002:a05:620a:4495:b0:8b2:e4f7:bfc9 with SMTP id af79cd13be357-8c08f68d65cmr4681222085a.39.1767025112084; Mon, 29 Dec 2025 08:18:32 -0800 (PST) X-Google-Smtp-Source: AGHT+IFL4YkPefaFlF9oEJOQlDE4A2f+ZkX/BhH4h+EP406z+I82ZC78jxtOfgEzLtjkNg6U9tOuug== X-Received: by 2002:a05:620a:4495:b0:8b2:e4f7:bfc9 with SMTP id af79cd13be357-8c08f68d65cmr4681217485a.39.1767025111532; Mon, 29 Dec 2025 08:18:31 -0800 (PST) Received: from [192.168.88.32] ([169.155.232.231]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8c0975ef6a7sm2315967085a.55.2025.12.29.08.18.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Dec 2025 08:18:31 -0800 (PST) Message-ID: <106d58e5-bf93-4ff8-9c1d-9064847dd892@redhat.com> Date: Mon, 29 Dec 2025 17:18:28 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net v1 2/2] octeon_ep_vf: avoid compiler and IQ/OQ reordering To: Vimlesh Kumar , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: sedara@marvell.com, srasheed@marvell.com, hgani@marvell.com, Veerasenareddy Burru , Satananda Burla , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski References: <20251219072955.3048238-1-vimleshk@marvell.com> <20251219072955.3048238-3-vimleshk@marvell.com> Content-Language: en-US From: Paolo Abeni In-Reply-To: <20251219072955.3048238-3-vimleshk@marvell.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 12/19/25 8:29 AM, Vimlesh Kumar wrote: > Utilize READ_ONCE and WRITE_ONCE APIs for IO queue Tx/Rx > variable access to prevent compiler optimization and reordering. > Additionally, ensure IO queue OUT/IN_CNT registers are flushed > by performing a read-back after writing. Same question here. /P