From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f42.google.com (mail-wr1-f42.google.com [209.85.221.42]) (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 C108E2C0F69 for ; Sun, 17 May 2026 06:19:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778998784; cv=none; b=tyPA+LXiryKZdOsSkdYfjsvpvAosW+SIJClpVCDF8WqNUN1J+/FLaYtZe8qyC7azMbejSkJVIk3srNVu61M+Zwz/0f3VxkaBsu7Ocd7f6MbfVdlmPZxPx1AwvSOd0NeSZl5DehNsqwz55rPD1qGsggpnpmQGBmimzy694Qqp7O0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778998784; c=relaxed/simple; bh=qUI1Kvy8G4UZN8XVWU9+FHDr0P4yKt9TWkL45QXTVdc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=aqXY2z2h92Q9QhkY1Gp93RRVRzRWChb6YskwIVTp5XI5Is2c5qLExvqKhbbW0enrXKcg8KyENDHn/pR/tv0xvfkOmKbgcesMzKMxbrMqLFTX8u4ouRRe8Tl31PO5RSXf+md2aAAbYwGsCoX0aiy/KXSavA7+mGnAQSTheEKX7D8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=resnulli.us; spf=none smtp.mailfrom=resnulli.us; dkim=pass (2048-bit key) header.d=resnulli-us.20251104.gappssmtp.com header.i=@resnulli-us.20251104.gappssmtp.com header.b=xE8N5Yjl; arc=none smtp.client-ip=209.85.221.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=resnulli.us Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=resnulli.us Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=resnulli-us.20251104.gappssmtp.com header.i=@resnulli-us.20251104.gappssmtp.com header.b="xE8N5Yjl" Received: by mail-wr1-f42.google.com with SMTP id ffacd0b85a97d-43eb05b1875so469473f8f.3 for ; Sat, 16 May 2026 23:19:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=resnulli-us.20251104.gappssmtp.com; s=20251104; t=1778998781; x=1779603581; darn=lists.linux.dev; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=qUI1Kvy8G4UZN8XVWU9+FHDr0P4yKt9TWkL45QXTVdc=; b=xE8N5YjlgeZQ2/8dzKDm4mxObadEMqmyS9V+uGIntKzeiTP/9IVL7sRJrE7S8oxkPN +yrDEjJ0qSDEczkjqrwIViwX5i7nXExtIK9Rzt21kCUQiRiSXZiYfqiEXr8P8E7Pz0NS TdG2k1SFiyKsi1VOM/ORQYlUqIAR2uFar2Y8x1PCELL/QatMTobrAD4U+iaB+1IC7fDV QcX/+0nsU4o/EK18glZRJnVbCvdQVrc3RgIF61rMvM2DDRI88MdDMXUS1LMmHGpe7lMu M+7ovJcI+TcRw+WRic1D1PiGSjBgi7gW/mJJV9+h0Iz6CdDpQzl6esT9qenPHKlhb26a UvnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778998781; x=1779603581; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=qUI1Kvy8G4UZN8XVWU9+FHDr0P4yKt9TWkL45QXTVdc=; b=YcFnMq9dCRb1Cck+1r8KIqwGplosPeg7KBaADJTJAoDQwc99oHT1oH2IC+fTerI7Tt 5nRZDf32b8cQn9xrqNlGLuFJxvpzEAPbSapDcj69htEb7dZN0SoLfAcjhEIoKD5aZ5oI zZ6irFZB+CNfbVB0MhdTY8jpOxacqa8KnY6UosUG0TxfSt6sCeX+wrtY5k+kBzirMZPk bBmHBCAmYRWLOiwfNp/CqFx3c2Zs391WNi1FdQG1S/ITAixbRfd0MI4pIqbvs78W36NU 2MyyesnN9tnTSuWMqdKNOgyNEW1shyCXAduVCOxHQ9i6MGRUurdObes9Nhe1/kCEn8pB agdg== X-Forwarded-Encrypted: i=1; AFNElJ/EvFUH46lh+Iu+qlDtC/edOkh0Y1NEKh6+lSQIJDbVpvRN3kJWedhejRmomZXnYWvjX40gBHPQnHQz@lists.linux.dev X-Gm-Message-State: AOJu0YyZz7qtpbtfypal2OE+83DTbR26tAfWreVIDC31XNLOXL/DDn3D 2EbeKl1+DoETNjvopUyu1OZTFSudC+6Z2um9liGGxGT0ABeG5hD1wLKr6SWFUgVO4As= X-Gm-Gg: Acq92OGJh9GlcHLmzWOODWFVeX4TRvk02g0W+Ycwf4B+zwo7SVvw2eh81RHE9p/UUgg VpAGIwcqn5z3OuMgoKcxj21sU5G4PLqaJYCDm+6JIRKZV9VK9pAfklcFH9V96TWSRJaiksVmVJG HgnaVyU4T1Xg90ibQ0X+iSur7ZCj9drcf6IB6oMrw6StOZiX6pJ4XVlYBwCB4LveOWzfcfM+mJ3 E3hjGRZ45hqp8vXNQDn8eS2ZFlHWhJBaFvfXGgsgh2L4qL5GIR70eVRqNTVhlqz7sOsSOr8MvFH o+rtBcVcdsX0OMNat3EqBb18Md8rG0dgod8U4FnnXTxQiuJP9THwsLZue4rRJdi6guS3o4gQaYV zLXrV/YONNQOSLfx//Gtz5i8fvKCJd/Xm8lNxXxg+Lh3KgQILe/I9xOvGNNDBCOh3Mv6LLsrIe5 m458gJQEWNckl3WEfaTR5wwlY3Pw0WolOkAMMQB5HHJhznGg== X-Received: by 2002:a05:600c:a30a:b0:48a:568f:ae8a with SMTP id 5b1f17b1804b1-48fe5fda35fmr111967805e9.8.1778998781051; Sat, 16 May 2026 23:19:41 -0700 (PDT) Received: from FV6GYCPJ69 ([140.209.217.212]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48fe537c788sm163535945e9.12.2026.05.16.23.19.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2026 23:19:39 -0700 (PDT) Date: Sun, 17 May 2026 08:19:34 +0200 From: Jiri Pirko To: "Aneesh Kumar K.V (Arm)" Cc: iommu@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, Robin Murphy , Marek Szyprowski , Will Deacon , Marc Zyngier , Steven Price , Suzuki K Poulose , Catalin Marinas , Jason Gunthorpe , Mostafa Saleh , Petr Tesarik , Alexey Kardashevskiy , Dan Williams , Xu Yilun , linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , x86@kernel.org Subject: Re: [PATCH v4 00/13] dma-mapping: Use DMA_ATTR_CC_SHARED through direct, pool and swiotlb paths Message-ID: References: <20260512090408.794195-1-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260512090408.794195-1-aneesh.kumar@kernel.org> Tue, May 12, 2026 at 11:03:55AM +0200, aneesh.kumar@kernel.org wrote: >This series propagates DMA_ATTR_CC_SHARED through the dma-direct, >dma-pool, and swiotlb paths so that encrypted and decrypted DMA buffers >are handled consistently. > >Today, the direct DMA path mostly relies on force_dma_unencrypted() for >shared/decrypted buffer handling. This series consolidates the >force_dma_unencrypted() checks in the top-level functions and ensures >that the remaining DMA interfaces use DMA attributes to make the correct >decisions. FWIW, the patchset in general looks good to me. I tested this with my system_cc_shared dmabuf flow, works flawlessly. Thanks!