RE: [PATCH v9 1/6] x86/tdx: Add TDX Guest attestation interface driver

Wang, Wei W
2022-08-29T08:05:16Z

On Monday, August 29, 2022 11:15 AM, Huang, Kai wrote:
> On Mon, 2022-08-22 at 14:44 -0700, Dave Hansen wrote:
> > What ioctl()s are in the pipeline for the host side?  Are they all
> > part of /dev/kvm, or are there any TDX-specific "drivers" for the host?
>
> Sorry for late reply. Was on vacation last week.
>
> AFAICT no ioctl() is in the pipeline for the host side, except those belong to
> /dev/kvm.
>
> I am not 100% sure about TDX live migration support (TDX 1.5), though.
> Supposedly even there are they should belong to /dev/kvm too. + Wang, wei
> to confirm.

Not /dev/kvm.
TDX migration uses kvm device fd and implements a tdx-mig specific driver on it.