linux-kernel - Re: [PATCH v5 3/5] iommu: Add iommu_driver_get_domain_for

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Message-ID: <aR0yEyFoKQk7AXcx@Asurada-Nvidia>
Date: Tue, 18 Nov 2025 18:57:23 -0800
From: Nicolin Chen <nicolinc@...dia.com>
To: Baolu Lu <baolu.lu@...ux.intel.com>
CC: <joro@...tes.org>, <afael@...nel.org>, <bhelgaas@...gle.com>,
	<alex@...zbot.org>, <jgg@...dia.com>, <kevin.tian@...el.com>,
	<will@...nel.org>, <robin.murphy@....com>, <lenb@...nel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <iommu@...ts.linux.dev>,
	<linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
	<linux-pci@...r.kernel.org>, <kvm@...r.kernel.org>,
	<patches@...ts.linux.dev>, <pjaroszynski@...dia.com>, <vsethi@...dia.com>,
	<helgaas@...nel.org>, <etzhao1900@...il.com>
Subject: Re: [PATCH v5 3/5] iommu: Add iommu_driver_get_domain_for_dev()
 helper

On Wed, Nov 19, 2025 at 10:47:26AM +0800, Baolu Lu wrote:
> On 11/18/25 15:02, Nicolin Chen wrote:
> > For v6, I tend to keep this API as-is, trying not to give troubles
> > to existing callers. Jason suggested a potential followup series:
> > https://lore.kernel.org/linux-iommu/20250821131304.GM802098@nvidia.com/
> > That would replace this function, so maybe we can think about that.
> > 
> > If you have a strong feeling about the WARN_ON, please let me know.
> > 
> No strong feeling. I am fine with it because the comments have already
> stated that "This function can be called within a driver bound to dev.".

Ack. Thanks!

Nicolin