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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D4E8D1098782 for ; Fri, 20 Mar 2026 13:09:55 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 052C16B0088; Fri, 20 Mar 2026 09:09:55 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 003506B0089; Fri, 20 Mar 2026 09:09:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E5BE46B008A; Fri, 20 Mar 2026 09:09:54 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id D4D116B0088 for ; Fri, 20 Mar 2026 09:09:54 -0400 (EDT) Received: from smtpin23.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 7E67414024E for ; Fri, 20 Mar 2026 13:09:54 +0000 (UTC) X-FDA: 84566473908.23.044ADE7 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf10.hostedemail.com (Postfix) with ESMTP id AC6E5C0010 for ; Fri, 20 Mar 2026 13:09:52 +0000 (UTC) Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=UhusO7Ir; spf=pass (imf10.hostedemail.com: domain of mripard@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=mripard@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1774012192; h=from:from:sender: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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=KtyqkgdW2N+tGuiRRGwfaJSw9/wwP3BDlPbzeD6Tf8s=; b=gmtJbrmC+s3hihdpmwwGZMTL7fiOkU7gWCl4WB0UpLU9Iy9UiXXHiLtqDOnigmh+L7/Caz Suu4p1Q0Cpw1AOxOoehrBHijROau64Q/QTxg/P4iSieSfFz18hYCkMbTCsSMvrNZWsqN7f qtZzG0q2A7/Z3HdY7POwNkrfbnCV950= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1774012192; a=rsa-sha256; cv=none; b=OfMCF9fAhNPH4vOeLskRisoe/pRTWnYG452uui5kQBQC8ZfOKd6+LRqf5L+aYqxUkmJV8Q 1Ru1sx/Y54A2aZGer/kUwUqCQNz2bLPH6+TWEYH27UjNwvfGvyKDLK2Wnc3T9ZPsabb087 4f0aK2iGU+KpcaMtoeC51P2xyCAq8Q4= ARC-Authentication-Results: i=1; imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=UhusO7Ir; spf=pass (imf10.hostedemail.com: domain of mripard@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=mripard@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id A84E8443E5; Fri, 20 Mar 2026 13:09:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3263CC4CEF7; Fri, 20 Mar 2026 13:09:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774012191; bh=KtyqkgdW2N+tGuiRRGwfaJSw9/wwP3BDlPbzeD6Tf8s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=UhusO7Ir2EBydsGHlZyj5vew5uqx3LL62vko5Nvx7uYqnN8LXpvVu0HBg4Jb3rN11 6S73M9ojHqYjBNhrbqF5Hh7jyCfzHErGHu3L1R6mUu7iSqAUdNpYycA6t0Y2JGCu7I azCPpzorM0ShT1moymtT/RU9iLPZHEFywsckNnX3po4/g+RkOux39sHfuVFqfrhI0x 6K5iBG0kBNAiB0VJi3u6qKegr8Nd04DhRa7oBU/Df5hCAnlurweBz5L4KTZSQstN+h 7+aKbBVLQnUQbRckkQHUOiKXHr8jcSwXklaf2DF4sTPlOxHzV7mqlaSl370vp3i1VV OQBJzASK6ggNg== Date: Fri, 20 Mar 2026 14:09:48 +0100 From: Maxime Ripard To: Marek Szyprowski Cc: Sumit Semwal , Benjamin Gaignard , Brian Starkey , John Stultz , "T.J. Mercier" , Christian =?utf-8?B?S8O2bmln?= , Robin Murphy , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Albert Esteve , linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-mm@kvack.org Subject: Re: [PATCH v3 0/8] dma-buf: heaps: Turn heaps into modules Message-ID: <20260320-cryptic-industrious-otter-5b696a@houat> References: <20260303-dma-buf-heaps-as-modules-v3-0-24344812c707@kernel.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha384; protocol="application/pgp-signature"; boundary="zs66qpw74bbg7irl" Content-Disposition: inline In-Reply-To: X-Stat-Signature: t4oghc6rf4y8hkf3x6pihp7773z8irxg X-Rspam-User: X-Rspamd-Queue-Id: AC6E5C0010 X-Rspamd-Server: rspam12 X-HE-Tag: 1774012192-138716 X-HE-Meta: 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 rAiPbkgM LBovVj1sg9P/oMQ6dVWd3tKI4U2Evc03F0/cLd5EofGwSQ6aFZeYqJmvh9FlFyWqlB2gvbp5kpYGwDmjk5NYh5k75pNI9WkZ54Qw8g462NwMDE91ekfC6ulM58o0sx9LLHC5wXm9XY+NfLWiDAAgUZa/o4lCPu2T3tF3Tm2w/zUzs81GMNg6q/1Y4x8h+EK6P3ZmEt3X1pnXaznC0aokU7ZKqaXjSNqHPheC4O3jHyBNOZQCT3s87xW4NmtFAqhoy/FnXOKKvfk/lKyZexbJH97gui8oll7dHonWYQH9mEh/ioxzVnsQdtet529mSVmKndVEbslsMcI7Mk7I8dLT9UwNPTsnO2hZSWXPt/5vNZYIqAQvLS3wYFqhwl/E0XKn3XBsoLsC17W4XlphzW15DNM3YZeZN9nCwGCuQBP049iKmlMY0rmeLp6zbEA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: --zs66qpw74bbg7irl Content-Type: text/plain; protected-headers=v1; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH v3 0/8] dma-buf: heaps: Turn heaps into modules MIME-Version: 1.0 Hi Marek, On Fri, Mar 20, 2026 at 01:24:18PM +0100, Marek Szyprowski wrote: > On 03.03.2026 11:13, Maxime Ripard wrote: > > The recent introduction of heaps in the optee driver [1] made possible > > the creation of heaps as modules. > > > > It's generally a good idea if possible, including for the already > > existing system and CMA heaps. > > > > The system one is pretty trivial, the CMA one is a bit more involved, > > especially since we have a call from kernel/dma/contiguous.c to the CMA > > heap code. This was solved by turning the logic around and making the > > CMA heap call into the contiguous DMA code. > > > > Let me know what you think, > > Maxime > > > > 1: https://lore.kernel.org/dri-devel/20250911135007.1275833-4-jens.wikl= ander@linaro.org/ > > > > Signed-off-by: Maxime Ripard >=20 > I'm okay with the kernel/dma/contiguous.c changes. I only wonder how to= =20 > properly merge them. There are other pending changes to=20 > kernel/dma/contiguous.c file [1] and if they finally get reviewed, I=20 > would like to merge=A0both via dma-mapping-for-next tree. Then I can=20 > provide a stable branch for merging the remaining dma-buf pathes. Is it= =20 > okay for You? That sounds reasonable to media Thanks! Maxime --zs66qpw74bbg7irl Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iJUEABMJAB0WIQTkHFbLp4ejekA/qfgnX84Zoj2+dgUCab1HHAAKCRAnX84Zoj2+ dtHjAYCni65LYJfONrHzX1+dmTg8jR62Up22RXPxSlYyod1hB1tdIw9izCD0G6Yd tTFaIwEBgJvjLz3SwBA1sbRbznr8PQjslZc5ZJNJzdGupJIT8b7KJryJWaeGjrY9 oc+2U5qZsA== =0xTf -----END PGP SIGNATURE----- --zs66qpw74bbg7irl--