From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5E8FFC43458 for ; Mon, 13 Jul 2026 19:28:17 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4gzXXb6Gw8z2y1F; Tue, 14 Jul 2026 05:28:15 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2607:f8b0:4864:20::72c" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783970895; cv=none; b=W6aHx08xSZPqyg1VlvFqXZhGGT129UhS9N6ET5XHDTkTwO+zvDbkF7WaQRSKjvbm9ANGxRKX+PCKnlcR0tSA0WRZLHa0aXFghxMU3tqDXUIp00VQ0cyZ2Fgv01WMLcmHfk4FaQYZgtWaqc4rQsG5RXdeBWULH96YnPBI+kBETIgbqQknkNX5uFJ+3JjGGQnnGLjtY0/DA3WA3GYsl5XTApX1z6YFRFwqIF/4sMirWbYBzkGaY6bRfcCeoNfM5J6zwGSiO/m6HTom0cFqY7MDsslnIezmjB6rx+Yp9uXMRLWv9GTMSY/DOc9YqHNioBO97lsDzqycRcZLTM/TMj076A== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1783970895; c=relaxed/relaxed; bh=bN9JaggjBtthcoIhUPMeMbFxrz5q2FPyWPTtAmvW2io=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=S+P73rK4QMauaksP4B6DQp/s8UW0Ubst3UuInTxMvEcfSNyIGfU1gdqiX/a0bD9SnMnvZ8AEqqdoQ9e2sqCS3HTCC9dIULImstn3w9lfO3VKYJ52vnXhvmQZ5n7W7KmHVxtKaNogoxfcsOa4kYAlXt6S8z9X65FZ+Rm1mTkPJsYfF+FHbFM0ERMgDcN87DN4mud+Yhz0EByOw7W9cnNLbYpcWDy5gmMc2qZcuotUYRb/gI11S1xBpvd/CJDjUfo8roEYfE+DgsaiGjYCE66l56UYMUb42O5IUJpAw69D93RnC0zv3+LmLYiHt0/Q7lHFlt/32VZQdsV5lz4j3dArfw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ziepe.ca; dkim=pass (2048-bit key; secure) header.d=ziepe.ca header.i=@ziepe.ca header.a=rsa-sha256 header.s=google header.b=VRF4nRmF; dkim-atps=neutral; spf=pass (client-ip=2607:f8b0:4864:20::72c; helo=mail-qk1-x72c.google.com; envelope-from=jgg@ziepe.ca; receiver=lists.ozlabs.org) smtp.mailfrom=ziepe.ca Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ziepe.ca Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=ziepe.ca header.i=@ziepe.ca header.a=rsa-sha256 header.s=google header.b=VRF4nRmF; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ziepe.ca (client-ip=2607:f8b0:4864:20::72c; helo=mail-qk1-x72c.google.com; envelope-from=jgg@ziepe.ca; receiver=lists.ozlabs.org) Received: from mail-qk1-x72c.google.com (mail-qk1-x72c.google.com [IPv6:2607:f8b0:4864:20::72c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4gzXXZ5Rxtz2xLg for ; Tue, 14 Jul 2026 05:28:14 +1000 (AEST) Received: by mail-qk1-x72c.google.com with SMTP id af79cd13be357-92e55b62640so205383785a.0 for ; Mon, 13 Jul 2026 12:28:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; t=1783970892; x=1784575692; darn=lists.ozlabs.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=bN9JaggjBtthcoIhUPMeMbFxrz5q2FPyWPTtAmvW2io=; b=VRF4nRmFpNzsDyVKJXBcNIXMHwDITFNCzLHU9R++3Icg69GnyRmZgcxjdqLcMXA/IN R7+YDgAnSz4bLXRV2sGyZZqJDuioAqJ5gCesvVzUud1hDAKPxgKkg3Y4lsYxibFsTZom 4BtdLlaZ/h+AdWs+cwgokOhHEavfuXlH+8r/Eql1M//5BzZrH4Di7eNvW/4yB8Ytjydj jYxyQ6LeJa3M639KkspXwMKjTl+Y9oZnAwiRyiM7vsYdOiknhRfV8BiMksHqW6nyCKJF Pk0BUosJceQKhjwEwtRbqOZMq7Tv9KC2AAI0B8nEBGqT/vUbAbqPrTPaaZKgS+heQhfW GvXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783970892; x=1784575692; h=in-reply-to:content-disposition:content-type: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 :content-type; bh=bN9JaggjBtthcoIhUPMeMbFxrz5q2FPyWPTtAmvW2io=; b=nEWqo611IMij1If7l0IPxHt2qil2AOeX75MTZjPwyyddsTN8m6bZtR+EZLXW8xTRLC Fbeit1Fy6U0F+N1u8SNdbXTrmXKSru2H0v4HA+HYPxDYBWPHPGlg+7zz/L+7A0jRSxNP X1zxVufYAdZY9PPK3Cwbegd9enyI2bGqX59rxcdcGs/p5OELbcATjZ/ucMqQa7IG/jR0 jlCUysJNh3v8+fIYWoHqTj2x+Uaxlbm/LDp3pQSLaHw3TxuDXqmnRauDdxVRFhWwbIjx saFoMlUtK+z34Uz6O1W2EHDLn7al2aadnNaCafdTMeieAYEgGbOsh6uNO3DopvabZe5y RINQ== X-Forwarded-Encrypted: i=1; AHgh+RpJ+TwI44Yo0w6imm0trm0wNkwZPirfT693TOPro8C8Furm43VH4MeRJuFt5vQKSbFfF/XsvHR6oINwzjA=@lists.ozlabs.org X-Gm-Message-State: AOJu0YzeOmffmPpTT7qmxeNuGhkMHuSU0YC3FENy2EmvIq9A8rHe1gW/ 80qhACOTYQg9XMVvI8NM5QFntg5ZCeehqfa9GpTJ8V3DxbH4ikRpaP3pG/84FX+MNq0= X-Gm-Gg: AfdE7ckF7pymxYgE5xlTAwDFTEFnN6teQ9su2v2TEf5j4b9dlIIc4AjjSCnUhXjAqXP g9m2ZUPqs3q5CFUYPFhzNTDX5f5jab5A2L4YIrlR2nInkqZidX8vl8SF/41XLHWAkGFr8Y8jrj9 t3c02ArAzzYFNXisUinlrWDm1uQgLvqiEWliZ25TfVCFAf+dGIN7nmlZeqH3Dag70jBdFO/41te zyN2LB9DfFZQO5pdvQiaXKBP6eC30W7sQRIT1ZL9Ogel4DYwX+7qsY2Z6MXsHxVx43LTlK19M1w Q7nu7ZVjqLPSfJZD5hqtyKfOxneVObp8itlxzaiqVBhQwi8g26qYFh1phoMI/1Z9txVmJHa1y+x 3CiJrA4c9jEInad3WPX4OVr4ZYvZsFGqLW3/D8LBy8fXl/Q3jdYp+ERTce+98ppxuSsEBDts= X-Received: by 2002:a05:620a:2616:b0:92e:4a4a:4478 with SMTP id af79cd13be357-92ef2b55ebbmr1041396385a.31.1783970891864; Mon, 13 Jul 2026 12:28:11 -0700 (PDT) Received: from ziepe.ca ([159.2.72.92]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8ffd5bbac2asm137804776d6.21.2026.07.13.12.28.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jul 2026 12:28:09 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1wjMK0-0000000E5Zr-4AHb; Mon, 13 Jul 2026 16:28:09 -0300 Date: Mon, 13 Jul 2026 16:28:08 -0300 From: Jason Gunthorpe 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 , Jiri Pirko , 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, Jiri Pirko , Michael Kelley Subject: Re: [PATCH v7 15/22] dma-direct: pass attrs to dma_capable() for DMA_ATTR_CC_SHARED checks Message-ID: <20260713192808.GU3133966@ziepe.ca> References: <20260701054926.825925-1-aneesh.kumar@kernel.org> <20260701054926.825925-16-aneesh.kumar@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260701054926.825925-16-aneesh.kumar@kernel.org> On Wed, Jul 01, 2026 at 11:19:19AM +0530, Aneesh Kumar K.V (Arm) wrote: > Teach dma_capable() about DMA_ATTR_CC_SHARED so the capability > check can reject encrypted DMA addresses for devices that require > unencrypted/shared DMA. > > Also propagate DMA_ATTR_CC_SHARED in swiotlb_map() when the selected > SWIOTLB pool is decrypted so the capability check sees the correct DMA > address attribute. > > Tested-by: Jiri Pirko > Tested-by: Michael Kelley > Tested-by: Mostafa Saleh > Reviewed-by: Petr Tesarik > Signed-off-by: Aneesh Kumar K.V (Arm) > --- > arch/x86/kernel/amd_gart_64.c | 30 ++++++++++++++++-------------- > drivers/xen/swiotlb-xen.c | 6 +++--- > include/linux/dma-direct.h | 10 +++++++++- > kernel/dma/direct.h | 6 +++--- > kernel/dma/swiotlb.c | 2 +- > 5 files changed, 32 insertions(+), 22 deletions(-) Reviewed-by: Jason Gunthorpe Jason