From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA1572FF14A for ; Thu, 23 Oct 2025 10:06:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761213981; cv=pass; b=KbX0aY9QJm7x9iQHrkyK6FfiwZ5RZr+sOuaAfpwVhb/bp3QeSTSrkCvnPN4RITOSF6U9SmS38t6V5v9LmmHpYVOO1FZ8rxmbdEmobb2hgKWKMBhPl2oEydWhlVXEhaSrWggriW/LlK1oWaec0ghT9ceLoU1AX8PVr86y7nANFZA= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761213981; c=relaxed/simple; bh=U9jp0SPlim+y8Eqq/PrlyNwVnUwoUNx9rDZcE9gTefc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=WFvicyHrBvrOeO4b3SQBWDWTfJOZuqGEsG+jGwGLQv1AQIESSSbG/YnyWEJStZnSd4stbQAyaAzLpl4sGBv3CGZTd1c+z3XooC7qiH6VCbkbXsV3Bu/b+JDec58cGvaINcJWE9CV2qWsRUHrMebyFNWs9Vyx9IGfku8uA3qNv0g= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=dmitry.osipenko@collabora.com header.b=OCUWIGcy; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=dmitry.osipenko@collabora.com header.b="OCUWIGcy" ARC-Seal: i=1; a=rsa-sha256; t=1761213959; cv=none; d=zohomail.com; s=zohoarc; b=OLK072fVQUm6uoyWmfSIvM7Gj2Plzm1vwQw3XoZ/InQPjlVp1Z/wQJJCUffCt5SKo2J5IqyXiun/m0UgmZPGudqubUvjkrEicAUbIt6C1AVJEE9rxrcZsrCOcDZndyvMbTK9M43IOOxu3TfHb0P4D0M/zxa8It48BDGlQj9bgDU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1761213959; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=MVDEM4oD9jX0d+ROBJ3prXRtO6D5OWGJxHZZT3Buk38=; b=n6sbHRfdYDRZpJ5gR7ftbntFW5AnxsqJUmn/n1mrafkz4TWKDPfAuC5PSzrV3hXk9maWGdB21sW5TUx2Wu+JVCQhLLMovvTjxswpgSph96gFhLa6vMDdUAEoSR7I794DDtsyJJ2NmrkFmrefRcNEXt3SKbCNlJBHfVvMJcoD9uQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1761213959; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=Message-ID:Date:Date:MIME-Version:Subject:Subject:To:To:Cc:Cc:References:From:From:In-Reply-To:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=MVDEM4oD9jX0d+ROBJ3prXRtO6D5OWGJxHZZT3Buk38=; b=OCUWIGcyWmrXejR9OAxxkrU1SvAfqTyolX19MGbGBuFk45ewELOkHo/86QNMtlnb xcGpL6V9ttgJ88u0+ZVpZotdaw8KdWDI7Od+UTTGxLJ7GsE7ItqxtpDnWxrI6hfhBl3 IXrOKXratDXejg44wig9LtpjiG6KRBdhgG06h31I= Received: by mx.zohomail.com with SMTPS id 1761213957436587.1983409307098; Thu, 23 Oct 2025 03:05:57 -0700 (PDT) Message-ID: <3bc33fe2-5a6e-4f7b-a925-6fc72625a8c7@collabora.com> Date: Thu, 23 Oct 2025 13:05:48 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1] drm/rockchip: Set VOP for the DRM DMA device To: Cristian Ciocaltea , Sandy Huang , =?UTF-8?Q?Heiko_St=C3=BCbner?= , Andy Yan , Robin Murphy , Sebastian Reichel , Daniel Stone Cc: kernel@collabora.com, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org References: <20251022161948.199731-1-dmitry.osipenko@collabora.com> Content-Language: en-US From: Dmitry Osipenko In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ZohoMailClient: External On 10/23/25 11:42, Cristian Ciocaltea wrote: > On 10/22/25 7:19 PM, Dmitry Osipenko wrote: >> Use VOP for DMA operations performed by DRM core. Rockchip DRM driver >> is backed by a virtual device that isn't IOMMU-capable, while VOP is the >> actual display controller device backed by IOMMU. Fixes "swiotlb buffer >> is full" warning messages originated from GEM prime code paths. >> >> Note, that backporting is non-trivial as this depends on 143ec8d3f9396 >> ("drm/prime: Support dedicated DMA device for dma-buf imports"), which >> landed in v6.16 and 421be3ee36a4 ("drm/rockchip: Refactor IOMMU >> initialisation"), which landed in v5.19. >> >> Reported-by: Daniel Stone >> Fixes: 2048e3286f34 ("drm: rockchip: Add basic drm driver") >> Cc: stable@vger.kernel.org # v6.16+ >> Reviewed-by: Sebastian Reichel >> Signed-off-by: Dmitry Osipenko >> --- > > With the patch applied I'm not able to fire those warnings anymore - tested on > my ROCK 5B (RK3588) and ROCK 4D (RK3576) boards. Hence you may add: > > Tested-by: Cristian Ciocaltea More testing is good, thanks. Forgot to mention I'm myself tested on 5b/3588 and 4c/3399. -- Best regards, Dmitry