Re: [PATCH v2 00/25] TDX vCPU/VM creation

[Adrian Hunter]

On 30/10/24 21:00, Rick Edgecombe wrote:
> Here is v2 of TDX VM/vCPU creation series. As discussed earlier, non-nits 
> from v1[0] have been applied and it’s ready to hand off to Paolo. A few 
> items remain that may be worth further discussion:
>  - Disable CET/PT in tdx_get_supported_xfam(), as these features haven’t 
>    been been tested.

It seems for Intel PT we have no support for restoring host
state.  IA32_RTIT_* MSR preservation is Init(XFAM(8)) which means
the TDX Module sets the MSR to its RESET value after TD Enty/Exit.
So it seems to me XFAM(8) does need to be disabled until that is
supported.