Re: [PATCH v3 1/4] KVM: TDX: Track configurable CPUID bits allowed by KVM

[Edgecombe, Rick P]

On Thu, 2026-09-03 at 00:19 +0800, Binbin Wu wrote:
> > I see. You added patch 2 because without it QEMU breaks. While for
> > EST/TM2/SDBG/XTPR/DCA, QEMU doesn't break after they are turned to
> > non-configurable. QEMU cannot represent all the userspace VMM. It still has
> > the potential to breaks other userspace VMMs.
> 
> I think the risk is pretty low.
> I am not sure if Sean could provide some insight about this in google's
> userspace VMM.

Can't we fix the issue if we are wrong?