From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f53.google.com (mail-lf1-f53.google.com [209.85.167.53]) (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 5E4DE29B22F for ; Fri, 18 Jul 2025 10:34:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752834856; cv=none; b=NzwHGu/EaP5i4CS/n2eUpdesrkBeUl8eVartMdCGBWUbRp2tYCba64oQIuJNA5mlIhjHnw9Bc/n7UEr+jYk1P97yvHwr5VraJ7dfb6CB5HcgOhU3lBzFBo6XD6F/n1qtYFyxDT3FWse9ccViKYBMzEbndBHFrDeODsTAvMcpTbc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752834856; c=relaxed/simple; bh=URT4x0Acr8D69x0WfU/q2WOWVbFVaINnDpDK31b1/9k=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=eZj8mB0UrFsY6RoIeCU8H0S0OyepzgCXq3dXvKZtq8RMIsdiCc6Qh9O6r25zoc/hjm0hQK6ifU69tFairSyYoCO+iKWy5VU1FZj3NNORz5XJ6tNh331mwFpa7AHygutdjiKWnAE5U0hZ7uHkhHYYIjakYGXlpFEJFTV2qBuhDOQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=DZF/eq3V; arc=none smtp.client-ip=209.85.167.53 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.b="DZF/eq3V" Received: by mail-lf1-f53.google.com with SMTP id 2adb3069b0e04-5562838ce68so1897134e87.2 for ; Fri, 18 Jul 2025 03:34:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1752834852; x=1753439652; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=L16c/8jEUuiIlk2H4pEeJaRqtG3hOpwT7bIYsra1fiw=; b=DZF/eq3VD2C/3hAMEbKGvGbgH+SeGYZLH8RAj6JWYCo5WwBik7vS70ounf5cwaeW/8 LVkcZLcoize7CrgxygexPf1ky6qye+rd2LoCRZ+0/BwZUmSQsiQpSbQx8enwlf0AOQne GCHguKI+gSg7BSlteftH0rehRRSutd4+Rw+ytp6vZDqsbI0XfoJTMEOv61rHWHw+R+TX Fsmqh9A2IEa6iRQEaJxMs8SAYLiwK7vF8IrSL7EXBTM3Sh65r7jV0hg7s279MrzWiJqR S+5a7S5R+V7a93fuD0p1ydbR8CJaTZG09lUQOKlfEixt+uFMpBeGr4uzYL5YrCZY3BeR VXmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752834852; x=1753439652; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=L16c/8jEUuiIlk2H4pEeJaRqtG3hOpwT7bIYsra1fiw=; b=Mj71msDIVv6xPeRB7BzjnHOGCf27adCVpqcZVbxLUFZatlsAK9pptYgvspGRYClAwk quEqpP3nZOLxyFO707+e6KR724gUH9IFGmJOTFqUGeARvRGtnWCsLgMCvPq9zmeq/rwa Un45YfA0RMx+dGCNL6JCa09yi7q6g1I8mxJpSOSvhhgYOsb7a6oY/mtLJi7dyzTQ18bd VaLXbQivbTnE3rt53p6+QzkSMWC/Lg0dMILiCmbMtCgZunJLa+Xv+FBDVXGVHqKY760i 7nGWkwCF4MWsQgx262N9GGqulvPmB3iNeV1Q5IrvdTn1HHowJ+Xd9LchDTWz0+nPHX9x 7xBg== X-Forwarded-Encrypted: i=1; AJvYcCX/aEV1GELUS3tVaPafk7s5NXMy3yLzHmajk4x7b7j8zFmakwHDY7/llkxoXFYU/r5idTcX6w==@lists.linux.dev X-Gm-Message-State: AOJu0Yxqf+8NL3fX/zOYt8YA2+povrbOG1fHJgy9TWgYdgfjgoQNZ3hT Adxy7c5LlP9wDXaeFOtf9/ZsoCniLiOHTSZhtGjZwUdrw/lisbDuQj3p X-Gm-Gg: ASbGncvug/XBN4KF/6VSk2JGp87gzWKAp4SoLwizq0s9+YTr1fyR0QW5CDDuF2K7B2m LOekUerstJgr0e3PyKgEL5n3RsAs1il5dH5XsedK5UGOorvdEFK+I2T/lzSL30M9wfoK0FspvrE a0SK5aePAdVBaqVAou7jF0xu4JUoV9f+du68P18rFpMYWdsdc07fcfqfWnpRwooeuqdaQwj4eTH 2oQsaQVik+tejQ7klSv46uFZ46DOwNr7xWxAdEjgPPPz32Qok+/CWHRgKbqobXn4ybmKqWlIGWE BAwrtwTciHuFLLUEAVXPo3SJ3c6lTT46YG2TtrsB8pmX/YVz7fjCdNYp4fWy4a+WRE26NteVAtl BAswG7nf5/DTO/H4Y+4j4M1qxO1h5kq5gcVOI1DbTmmFyOFAwHKjSZJ6Grks9ei39mOo4+pKVvx g= X-Google-Smtp-Source: AGHT+IFFMGQELOhee441f3hfVlskDcHVYSyft1CA1/LFgX6RrnJxMgUqeZOwcEWvRatCceHUxRfGqA== X-Received: by 2002:a05:6512:40c2:10b0:553:2311:e1f6 with SMTP id 2adb3069b0e04-55a23f7fad8mr2256705e87.49.1752834852016; Fri, 18 Jul 2025 03:34:12 -0700 (PDT) Received: from abj-NUC9VXQNX.. (dsl-hkibng22-54f8dc-251.dhcp.inet.fi. [84.248.220.251]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-55a31d9176bsm203689e87.161.2025.07.18.03.34.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Jul 2025 03:34:11 -0700 (PDT) From: Abdiel Janulgue To: acourbot@nvidia.com, dakr@kernel.org, jgg@ziepe.ca, lyude@redhat.com Cc: Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Tamir Duberstein , FUJITA Tomonori , linux-kernel@vger.kernel.org (open list), Andrew Morton , Randy Dunlap , Herbert Xu , Caleb Sander Mateos , Petr Tesarik , Sui Jingfeng , Marek Szyprowski , Robin Murphy , airlied@redhat.com, iommu@lists.linux.dev (open list:DMA MAPPING HELPERS), rust-for-linux@vger.kernel.org, Abdiel Janulgue Subject: [PATCH v3 0/2] rust: add initial scatterlist abstraction Date: Fri, 18 Jul 2025 13:33:33 +0300 Message-ID: <20250718103359.1026240-1-abdiel.janulgue@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi all, This is v3 of the rust scatterlist abstraction incorporating feedback and code from Alexandre Courbot. Changes since v3: - After further discussion it seems we need a variant of typestate after all. A major change for this version is to introduce unsafe methods only when using one of the constructors for a SG table. Otherwise nothing in the interface should need to be unsafe. Changes since v2: - Drop typestate pattern. Introduce SGTablePages trait to enforce ownership of the pages to SGTable. Link to v2: https://lore.kernel.org/lkml/20250626203247.816273-1-abdiel.janulgue@gmail.com/ Abdiel Janulgue (2): rust: add initial scatterlist abstraction samples: rust: add sample code for scatterlist abstraction rust/bindings/bindings_helper.h | 1 + rust/helpers/helpers.c | 1 + rust/helpers/scatterlist.c | 30 +++ rust/kernel/dma.rs | 18 ++ rust/kernel/lib.rs | 1 + rust/kernel/scatterlist.rs | 405 ++++++++++++++++++++++++++++++++ samples/rust/rust_dma.rs | 49 +++- 7 files changed, 504 insertions(+), 1 deletion(-) create mode 100644 rust/helpers/scatterlist.c create mode 100644 rust/kernel/scatterlist.rs base-commit: 23b128bba76776541dc09efaf3acf6242917e1f0 -- 2.43.0