Re: [PATCH v2 1/3] PCI: Allow ATS to be always on for CXL.cache capable devices

Nicolin Chen
2026-03-03T20:15:47Z

On Tue, Mar 03, 2026 at 11:18:10AM +0800, Baolu Lu wrote:
> On 2/24/26 06:52, Nicolin Chen wrote:
> > +/**
> > + * pci_ats_always_on - Whether the PCI device requires ATS to be always enabled
> > + * @pdev: the PCI device
> > + *
> > + * Returns true, if the PCI device requires non-PASID ATS function on an IOMMU
> > + * bypassed configuration.
>
> Including iommu-specific policies and configurations here might cause
> confusion. How about making it simply as: "Returns true if the PCI
> device requires ATS to be enabled for functional operation"?

Yea, that sounds good to me. Thanks!

Nicolin