From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E35E53D6476; Tue, 2 Jun 2026 10:27:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780396021; cv=none; b=MUaxdZszyVhSLZ4Pg1bjvw3v2f+FcBHgvSB2jQsla79TqABQDAtbGC9q5gN7O9IBB9IvxurPyYhCfXhHITt9i4shCdhLa5P0g1UDwf6cXY0E7+RxQWvE+dBC6Bz+5Ucwooczg1aIR+qVozNk52rkjFOMW6+AlkYtvRSO8NfzYjg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780396021; c=relaxed/simple; bh=jNbT1xfI4AKES/R6C034ioB/2d5MtkYrDKcFt4KRmV0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=OjVkAxTD5WNuaDYvQd46IpwAueQUXM9VofgPMb0WwL4GjyZ7OYbjd5Ajh09qlmMrDlfgYq2Ci8gf7xm4ND7dcH6Z5+aImP4oQDQwtt74jCHNM4VomXVNTU5Z5m9y23RSeaThgLohJXGOsBJzwxkleznVx+ajsiHa3V6AjVO1Yuc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OwroatbO; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OwroatbO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7B381F00898; Tue, 2 Jun 2026 10:26:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780396020; bh=3jBEa69c8N63ks09izWxmsniZ4VAuLD5W5zxrLrC+J4=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=OwroatbOTf4JWpFHrVpcw+sN0hdMdAEPBoMBttFTGmMLSOKGRTelONzECEeZtvS+y 1EbAc6+nUn4uChqO4m11OWVXf0jKj5tw8QQBZOQ4LsPYJhMGnzFoFMHdNfifOMrND6 O2lCv7aEm+QTP9RFHE41ksn3qrg0WT5XxM4i9rHCISgI/LpMA0uiYwqi9WBJdFXQam LtUt2SKU2pj2z/zQUjC4KwEy6hSuuaQBxlf14WIEcPfxNjtxRbOGo8YXWmEZY3A/K8 QA1/DtCcDHaWOEgIyLWq9OiisE5f5KIMzL9lvjBkc8IiV2wFDs+ccMSzadMCCICuer yQ4dHubwpHeuQ== Message-ID: Date: Tue, 2 Jun 2026 11:26:56 +0100 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] arm64: dts: qcom: hamoa: Reserve low IOVA range for Iris To: Daniel J Blueman , Vikash Garodia , Dikshita Agarwal , Abhinav Kumar , Bjorn Andersson , Konrad Dybcio Cc: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20260601041336.9497-1-daniel@quora.org> <20260601041336.9497-2-daniel@quora.org> From: Bryan O'Donoghue Content-Language: en-US Autocrypt: addr=bod@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 01/06/2026 05:13, Daniel J Blueman wrote: > On X1-family hamoa platforms, Iris DMA below IOVA 0x25800000 (600MB) > triggers unhandled SMMU page faults How do we know that is a correct address - does it come from qcom documentation or trial and error ? --- bod