Alexey Kardashevskiy wrote: > > 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, I am losing track of your specific feedback, or what changes or being suggested here is the summary of what the spec assumptions and what the core supports: Spec assumptions: - DEVCAP_TEE on a physical function is independent of IDE cap - SPDM for IDE and TDISP is only allowed on physical function 0 Implementation assumptions: - IDE without TDISP is a use case - TDISP without IDE is a per TSM-DSM pairing implementation decision - An upstream switch port DSM can manage downstream endpoints - Guest needs some indication that a PCI device can attempt to be locked. Either device or VMM emulation can set DEVCAP_TEE for that purpose.
