Re: [PATCH v4 04/16] x86/virt/tdx: Allocate page bitmap for Dynamic PAMT

[Xu Yilun]

On Fri, Jan 09, 2026 at 04:05:30PM +0000, Edgecombe, Rick P wrote:
> On Fri, 2026-01-09 at 10:18 +0800, Xu Yilun wrote:
> > On the other hand, the cost of a newly designed firmware interface
> > for an already online functionality is not low, especially when you
> > want backward compatibility to old TDX Module. The worst case is we
> > keep both sets of the code...
> 
> I think TDX module changes are something to consider long term. We
> already discussed not overhauling the metadata reading again ahead of
> the current work, so I don't think there is anything else to discuss
> here.

I agree. We don't have to introduce new interfaces for optional feature
checking. That's another topic.