RE: [PATCH v2 2/4] x86/virt/tdx: Read global metadata for trusted IOMMU

[Tian, Kevin]

> From: Xu Yilun <yilun.xu@xxxxxxxxxxxxxxx>
> Sent: Thursday, October 15, 2026 2:48 PM
> 
> On Thu, Oct 15, 2026 at 09:07:03AM +0800, Lu Baolu wrote:
> > Add support for reading the global metadata of the trusted IOMMU.
> >
> > The trusted IOMMU feature is optionally enumerated via TDX_FEATURES0.
> 
> The feature name is not trusted IOMMU, the name in the spec is
> TDX_CONNECT, but I believe people want a name with technical meaning,
> maybe TDX TDISP? Open question for all reviewers.
> 

According to the TDX Connect spec:

" This document outlines the system architecture specifications for Intel(r)
TDX Connect, a TDX extension technology for secure and efficient 
integration with trusted I/O devices. "

So "trusted I/O" sounds a good fit here.

Or "TEE-I/O" is also clear, based on the TDISP spec:

"Trusted Execution Environments (TEEs) that include a composition of
resources from one or more devices and the host require mechanisms
to establish and manage trust relationships. Here we will use the term
TEE-I/O to refer to a conceptual framework for performing such operations."