From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f175.google.com (mail-pl1-f175.google.com [209.85.214.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8318924111D for ; Wed, 2 Jul 2025 23:12:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751497943; cv=none; b=QBAcEngaMh5o/9o1ma5A/gS5HIVfjUCksK0vItvWU6N37mzZ+4XYJl2cmZTnDbu+pYF2i1keF21AIG9Gbs+cRK4h7eSakkyK4cKpB2qxT96Tg9IDS/jFpq7wDCqKMc5FMC6Xyl8rOFi8Wsjq77GhKFm/QBzlbem/zk1j2Eo9CQ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751497943; c=relaxed/simple; bh=W5DEVZVZD/XdBgp83mbAEPVPZScxL5P52rl1yMN/7Cw=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=RG4jb4hZQvoNFEb6R16Dek13iA7yTFANbLYa4Y/KOTRiwV6cPqzJysGdPrW2Xn99mYGMBuHKqv1k2WDp/IjHmc1swagIi6LzReIeBi+LFRbUzIe09MdcRJ5Nd5ocYd3cv3S29UgBI6GUQzjaRg0ywboamvMBttHmFvxCtmX6zf8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=davidwei.uk; spf=none smtp.mailfrom=davidwei.uk; dkim=pass (2048-bit key) header.d=davidwei-uk.20230601.gappssmtp.com header.i=@davidwei-uk.20230601.gappssmtp.com header.b=mzexuzGz; arc=none smtp.client-ip=209.85.214.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=davidwei.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=davidwei.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=davidwei-uk.20230601.gappssmtp.com header.i=@davidwei-uk.20230601.gappssmtp.com header.b="mzexuzGz" Received: by mail-pl1-f175.google.com with SMTP id d9443c01a7336-2366e5e4dbaso2677145ad.1 for ; Wed, 02 Jul 2025 16:12:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=davidwei-uk.20230601.gappssmtp.com; s=20230601; t=1751497942; x=1752102742; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id:from :to:cc:subject:date:message-id:reply-to; bh=7B9vig09hHsY0W2H5ZuA1ruKHor7ujjbbpl283tqHa4=; b=mzexuzGz1yrwmoxp/vQRQIr9HIKW6z6P6YM4/nErb9cjJysIiT83bDMtUhqUaAv4Dz u7hOG5t4sJSKTXsENAOPTqdvnWQb01d1cp0FG7PP4ayfqXAv5n92UAlnHgJr1w1WOpk1 dGH7xqASoVweT9X9Jy7YPkrW67NwEaYw/aBTrC/MTrS3mNv/cWldYf2eicnV7aGpi9gx 1R5eTcqL3vSnyE7ZgRGJhU6R+XzbJUnsikDe7Q5d+ByZm3FG5IhZjyGZLkWopz97qw4h ZJAzUHfEH3p/OsY4xcjQwSmXM/0SpS12Ui8SNErGM3CQBFpXDPxWr4HvftxwZx+mvTYD at4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751497942; x=1752102742; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=7B9vig09hHsY0W2H5ZuA1ruKHor7ujjbbpl283tqHa4=; b=WHrGNamCMq4RvkDpppivJglNkByhwiAmHQvZFD7u60ROZmRFtTVrbTxc/u/T2Yg0mf IBJJsL/HzhI77zDpIqIwEF7CkYJ19Hwtv5S3PROnJFSQEoGzkXFaqP52Jk4Fj4enVd10 ge7cNPLWRwqRQwmMeifXwGXOxeo6Vxu72idAciHjfi6iB04NxnNDdUKT+VevA9jx/hdg bw/6ZW4n7EZTD9K+lhAFcRS8j2s3zRdijzVQty+aMFk+lErSSPWT8SIzxWsVBTUnxXyJ PjsUp7Fowjo/uWzBmIsnfp94w9SBz3EAGsvh+KnfNRcW9phnWwr2QjpTG0J1UkTzwlvu uaTg== X-Forwarded-Encrypted: i=1; AJvYcCWxar+K+CYdqrLWkAdoALARrYSwVBCALCf4gLCtznbu+Tm5anys64bkPasNeqYC3UnaJ8Hu/yMVNQ==@vger.kernel.org X-Gm-Message-State: AOJu0YwxDwk/WRz5ZXYI5B5lgQF9rVUxxP7F68Gpb/ZoB1llHnlJU0EV cNHOXm6ZGSURYR9UnwEePSUzQUw5BYOEYezZu8jQhJIMFGrG6uyJAmoNKB0eUjDu2cs+9TTUFhb m9wKsRQM= X-Gm-Gg: ASbGncvyAmH138mdn+PZJWT6r0o3FCt0K90EXOZvBgyoFgD2ERuHJIlc/cGrZTZZF+3 +fYRRpekKTIYe6/WuVDS9lsNdhUQ+ziudrVywB+oeDco+NmK/7EtZzibWyseJoAotEzOdBDevw5 JjBLYXSW4Xtrdb0nkr1VXw0HjcQvdKQd8o5V0hPIB037ht84Rxe4I4b0jyvkBCcRTbcbR3T7MJI kn1StdGeuOTBCqce3NGDWi1GtLlK7wJ44cRmgqNaUDafO0Jf4VaE85oU+YTN0mBg8aZLBobcbNJ CyGQxNjZmXlZXJhAVTSOFb4xy2k5FFawOcIMqfBoLaSYSL6slQAncnib1+0YidtXMEyDYySJNaS jLwID1HI/Jqv2lo4/OUuodRJP X-Google-Smtp-Source: AGHT+IGa8Z8TPVM3onlmsTgi7J/k2r2fh4iKp05ofZWWu93QFGrAxUe1M/JCABSLqt4DopZqV1CiNg== X-Received: by 2002:a17:902:f745:b0:235:e1e4:edb0 with SMTP id d9443c01a7336-23c7b8ff87emr466125ad.22.1751497941755; Wed, 02 Jul 2025 16:12:21 -0700 (PDT) Received: from ?IPV6:2a03:83e0:1156:1:14f8:5a41:7998:a806? ([2620:10d:c090:500::5:b65f]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23acb2e2493sm147183555ad.48.2025.07.02.16.12.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 02 Jul 2025 16:12:21 -0700 (PDT) Message-ID: <01e5a711-fe8b-4d5c-b8c6-325fe2d67dff@davidwei.uk> Date: Wed, 2 Jul 2025 16:12:19 -0700 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/6] zcrx huge pages support Vol 1 To: Pavel Begunkov , io-uring@vger.kernel.org References: Content-Language: en-US From: David Wei In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2025-07-02 07:29, Pavel Begunkov wrote: > Use sgtable as the common format b/w dmabuf and user pages, deduplicate > dma address propagation handling, and use it to omptimise dma mappings. > It also prepares it for larger size for NIC pages. > > v4: further restrict kmap fallback length, v3 isn't be generic > enough to cover future uses. > > v3: truncate kmap'ed length by both pages > > v2: Don't coalesce into folios, just use sg_alloc_table_from_pages() > for now. Coalescing will return back later. > > Improve some fallback copy code. Patch 1, and Patch 6 adding a > helper to work with larger pages, which also allows to get rid > of skb_frag_foreach_page. > > Return copy fallback helpers back to pages instead of folios, > the latter wouldn't be correct in all cases. > > Pavel Begunkov (6): > io_uring/zcrx: always pass page to io_zcrx_copy_chunk > io_uring/zcrx: return error from io_zcrx_map_area_* > io_uring/zcrx: introduce io_populate_area_dma > io_uring/zcrx: allocate sgtable for umem areas > io_uring/zcrx: assert area type in io_zcrx_iov_page > io_uring/zcrx: prepare fallback for larger pages > > io_uring/zcrx.c | 241 +++++++++++++++++++++++++----------------------- > io_uring/zcrx.h | 1 + > 2 files changed, 128 insertions(+), 114 deletions(-) > What did you use to test this patch series or will that come with vol 2?