Re: [RFC PATCH 17/21] coco/sev-guest: Implement the guest side of things

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On 14/9/24 17:19, Zhi Wang wrote:
On Fri, 23 Aug 2024 23:21:31 +1000
Alexey Kardashevskiy <aik@xxxxxxx> wrote:

Define tsm_ops for the guest and forward the ops calls to the HV via
SVM_VMGEXIT_SEV_TIO_GUEST_REQUEST.
Do the attestation report examination and enable MMIO.


It seems in both guest side (this patch) and host side
(PATCH 7 tsm_report_show()), if the SW wants to reach the latest TDI
report, they have to call get TDI status verb first.

As this is about UABI, if this is expected, it would nice that we can
explicitly document this requirement.

We do need to document the UABI.

Or we just get the fresh report from the device all the time?

I'd do just that (and it should not really change as long as the TDI stays is in LOCKED/RUN) but since you are asking - I suspect there is a caveat, is not there? Thanks,


--
Alexey





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