Re: [PATCH v4 3/4] KVM: TDX: Filter configurable CPUID bits

[Edgecombe, Rick P]

On Wed, 2026-09-23 at 08:28 +0800, Binbin Wu wrote:
> Xiaoyao mentioned it in v3 too.
> 
> Sean suggested in v2 that "Realistically, CPUID.0x1.E{A,B}X are never going to be
> repurposed to hold feature bits, and so generating a mask of allowed bits adds
> unnecessary cognitive load and maintenance.  Ditto for CPUID 0x4, 0x18, and 0x1F."
> https://lore.kernel.org/kvm/aj1fi_0SBxMK5WOB@xxxxxxxxxx/
> 
> If we really have concerns, I can change it to exclude reserved bits in the next
> version.

Could we check the x86 arch folks real quick? If Sean is ok betting on this
though, I'm ok too.