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

[Edgecombe, Rick P]

On Thu, 2024-10-31 at 21:21 +0200, Adrian Hunter wrote:
> 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.

Good point. Let's disable it and CET. We can try a fixup patch when these land
in kvm-coco-queue.