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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 0BF3BCCFA1A for ; Wed, 12 Nov 2025 05:26:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Qn+Cb0gx5gkj2p9agjvyDOCKILiuBM0X9nJUJGpN5Og=; b=HQ1H99/lQsL0hYpPnSJPNsC0U6 h5LMYe1D/aGdc3KJlojILwq4nYHytWPtm8nLmeAj1yGLeECtE4bvpsMsHEXkt/BhYR5mUO4i41JcB 8sZ2ToHh0kKlpu2AY/eChHbJ//0Lc4CFzDSL1Z8s0OTOaCKekDkpnrvS/jXyxeDWurxDeH+KSXauf OmRGA3zJr/zE4qm16SRrUCqCqJe1wS5eNUXkgsm0wMyEb3+BWsfguQwkpztdxrlZARfEbMY2k61ab u8OoJVMpangvuYZrc1y9tTpF09l/Tj+judwaRmVb44OrMSkDCN/lcldtYIkbAqjNIwUvJ9JghG9fd PmTAohmQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJ3NY-000000089mT-3kAR; Wed, 12 Nov 2025 05:26:48 +0000 Received: from mgamail.intel.com ([192.198.163.10]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vJ3NW-000000089m6-3tOG for linux-arm-kernel@lists.infradead.org; Wed, 12 Nov 2025 05:26:48 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1762925207; x=1794461207; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=J2yCx8gANXEoEptcoVy/jvxBGR0sLdZaZJNtdCJDhDQ=; b=GR4sf/i8clilDqWjTYfeDd4ea82vZZHUmjIDI+wgr3f6lal7CpIRJs1O FQgTfFkEIWI8u30FqDC6LG1sUkvcnhRL82y3Tt6YJqIUX2hVx1NXeP1Do tt2UulGruDSI9RA8MdeYxNooH0QCGAlEA3JyjdJlTW0gvb/JGM/fINTQi PVqDG234r1h3qCnRXtPZ7tH1lCM1k1URSgE1gTRWgzUyOeocgfstOUsHt U087hPtn1DNTTF1nP1LHmKJwJZEZDTq4h1a2fmp7KgCiRnjTW56hJB6q0 5iBL/LnCFROqOG4gw7muya2YzAv085agn4sNYaZCWBr+laBZQlYXfvf7v w==; X-CSE-ConnectionGUID: GAbpg6tpQsag9dD06r+qZQ== X-CSE-MsgGUID: DjEz4SenRoSrGB3kEJcfew== X-IronPort-AV: E=McAfee;i="6800,10657,11610"; a="76331298" X-IronPort-AV: E=Sophos;i="6.19,298,1754982000"; d="scan'208";a="76331298" 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251111_212646_980211_BFA3C42A X-CRM114-Status: UNSURE ( 9.95 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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