linux-kernel - Re: [PATCH v5 5/5] pci: Suspend iommu function prior to resetting a device

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Message-ID: <aRwX6B7kEMj2i9mm@Asurada-Nvidia>
Date: Mon, 17 Nov 2025 22:53:28 -0800
From: Nicolin Chen <nicolinc@...dia.com>
To: Baolu Lu <baolu.lu@...ux.intel.com>
CC: "Tian, Kevin" <kevin.tian@...el.com>, "joro@...tes.org" <joro@...tes.org>,
	"afael@...nel.org" <afael@...nel.org>, "bhelgaas@...gle.com"
	<bhelgaas@...gle.com>, "alex@...zbot.org" <alex@...zbot.org>,
	"jgg@...dia.com" <jgg@...dia.com>, "will@...nel.org" <will@...nel.org>,
	"robin.murphy@....com" <robin.murphy@....com>, "lenb@...nel.org"
	<lenb@...nel.org>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "iommu@...ts.linux.dev"
	<iommu@...ts.linux.dev>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "linux-acpi@...r.kernel.org"
	<linux-acpi@...r.kernel.org>, "linux-pci@...r.kernel.org"
	<linux-pci@...r.kernel.org>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"patches@...ts.linux.dev" <patches@...ts.linux.dev>, "Jaroszynski, Piotr"
	<pjaroszynski@...dia.com>, "Sethi, Vikram" <vsethi@...dia.com>,
	"helgaas@...nel.org" <helgaas@...nel.org>, "etzhao1900@...il.com"
	<etzhao1900@...il.com>
Subject: Re: [PATCH v5 5/5] pci: Suspend iommu function prior to resetting a
 device

On Tue, Nov 18, 2025 at 01:38:40PM +0800, Baolu Lu wrote:
> The VT-d driver enables ATS in the iommu probe_finalize() path (for
> scalable mode).
.. 
> iommu_enable_pci_ats() will eventually call pci_enable_ats() after some
> necessary checks.

Oh, I missed that one.

Thanks!
Nicolin