From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (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 BB74C2D2384; Wed, 12 Nov 2025 05:26:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762925207; cv=none; b=amYtjfS1wubYkSgRjrksW7mV/MRRdfKvU5xYs9S982y7gohwolF+h98YzZRuGUmkwjmU1uySwe8Jhb2UeNxkmPQPQH0G6iuo2/4a3vuHKee7Hf+xGyTsY7qXVvPEXmIRxASHWwiJtN93RLuk26ZIFiZJ/GHzWri4ZZRFstW2wj8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762925207; c=relaxed/simple; bh=J2yCx8gANXEoEptcoVy/jvxBGR0sLdZaZJNtdCJDhDQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=agRMFCJtTtFX3XIiMR8uvqZE5HbEO1iLICvChIcjTgUilj3roJQI8cDloDw9a+rY6BqUwQiUWN21ilKo2qcdU2GvhPx2qkUTzmiQ+9Ea+qzSmlDzdDZJygErTJhvQlMo34OaX/K1kGHMehCnlZOd1yePDdz6aNBgj3YNY46otYc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=CEPWaH13; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="CEPWaH13" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1762925206; x=1794461206; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=J2yCx8gANXEoEptcoVy/jvxBGR0sLdZaZJNtdCJDhDQ=; b=CEPWaH13QuEHeyuMYIU1ab3uCDunT91ibG8+ITiwmGV/4rNBp0FVol4V 0z8xBgPDrfPVWk6HdgpC7Defilr/MJa2GtSZlzk/NFTxtJTK4UUlkOSsO p4CnXaCDA+h8F/7Tf801CtamAQhuPe5m4e5ACvbPLk+MIlzHAn7QU+Og6 uyfLG5LJSqBnGZkt3qk2HDAHbCGwgxZkk9c9KUjcFXz+5NeM5QArLRCYk BeMQu+wJlrIl3ov+RTlVM+ko2m6a07fPGEKkiiHhCu7le1LXoNVBDOZrQ Qpvk2HC/+VA3cRMgMFkeYN5WIAK95wLxmoWU7QPM3X7qInRxl7nYBrbmB w==; X-CSE-ConnectionGUID: v0nmhBdOR8iGFElsGJG/YA== X-CSE-MsgGUID: 6YchQTQuRT+OPI4XQlrrOw== X-IronPort-AV: E=McAfee;i="6800,10657,11610"; a="76331296" X-IronPort-AV: E=Sophos;i="6.19,298,1754982000"; d="scan'208";a="76331296" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2025 21:26:45 -0800 X-CSE-ConnectionGUID: 2KuqqVv9TuS5cZ/Ryocc5Q== X-CSE-MsgGUID: jYiQEfIURoe/1ab0ampM7A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,298,1754982000"; d="scan'208";a="189381942" Received: from allen-sbox.sh.intel.com (HELO [10.239.159.30]) ([10.239.159.30]) by fmviesa008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2025 21:26:41 -0800 Message-ID: Date: Wed, 12 Nov 2025 13:22:38 +0800 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 2/5] iommu: Tiny domain for iommu_setup_dma_ops() To: Nicolin Chen , joro@8bytes.org, afael@kernel.org, bhelgaas@google.com, alex@shazbot.org, jgg@nvidia.com, kevin.tian@intel.com Cc: will@kernel.org, robin.murphy@arm.com, lenb@kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, kvm@vger.kernel.org, patches@lists.linux.dev, pjaroszynski@nvidia.com, vsethi@nvidia.com, helgaas@kernel.org, etzhao1900@gmail.com References: <431cccb8279eb84376c641981f57e9ceece8febf.1762835355.git.nicolinc@nvidia.com> Content-Language: en-US From: Baolu Lu In-Reply-To: <431cccb8279eb84376c641981f57e9ceece8febf.1762835355.git.nicolinc@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 11/11/25 13:12, Nicolin Chen wrote: > This function can only be called on the default_domain. Trivally pass it > in. In all three existing cases, the default domain was just attached to > the device. > > This avoids iommu_setup_dma_ops() calling iommu_get_domain_for_dev() the > that will be used by external callers. > > Suggested-by: Jason Gunthorpe > Signed-off-by: Nicolin Chen > --- > drivers/iommu/dma-iommu.h | 5 +++-- > drivers/iommu/dma-iommu.c | 4 +--- > drivers/iommu/iommu.c | 6 +++--- > 3 files changed, 7 insertions(+), 8 deletions(-) Reviewed-by: Lu Baolu