Re: [PATCH v6 04/11] x86/virt/tdx: Allocate ref counts for Dynamic PAMT memory

[Yan Zhao]

On Mon, May 25, 2026 at 07:35:08PM -0700, Rick Edgecombe wrote:
> From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
> 
> The PAMT memory holds metadata for all possible TDX protected memory. Each
> physical address range is covered by PAMT entries at three levels (1GB,
> 2MB, 4KB). With Dynamic PAMT, the 4KB range of PAMT is allocated on
                                         ^level ?
> demand. The kernel supplies the TDX module with page pairs to store the
> 4KB entries, which cover 2MB of host physical memory. The kernel must
4KB-level entries ?

> provide this page pair before using pages from the range for TDX. If this
> is not done, SEAMCALLs that give the pages to be protected by the TDX module
Nit: > 75 chars per line.

Reviewed-by: Yan Zhao <yan.y.zhao@xxxxxxxxx>