On 6/9/25 12:07, dan.j.williams@xxxxxxxxx wrote:
Alexey Kardashevskiy wrote:
[..]
TDISP without IDE still needs to do all of SPDM (Component Measurement and
Authentication),
Support for PCI_DOE_FEATURE_CMA_SPDM says that then.
Right, the TSM core looks for that (PCI_DOE_PROTO_CMA) as part of
connect because it needs that either for TDISP or IDE.
The quoted bit looks for PCI_EXP_DEVCAP_TEE.
and the TDISP state machine.
I'd think PCI_EXP_DEVCAP_TEE is set on something which allows
START_INTERFACE_REQUEST and some SRIOV devices may not want to allow
this on PF0. I am likely to be wrong here then. Hm.
PCI_EXP_DEVCAP_TEE is the only way to identify TDISP capable devices in
the guest, right?
Right.
So PCI_EXP_DEVCAP_TEE means that there may be a DSM,
This bit I am not sure about. A bit hard to believe that PF0 is always expected to support passing through to a CVM. Thanks,
or a guest-side TSM tunnel to a DSM, that can affect the TDISP state of
this function.
--
Alexey
