On Tue, 2026-07-07 at 12:53 +0800, Yan Zhao wrote:

On Mon, May 25, 2026 at 07:35:08PM -0700, Rick Edgecombe wrote:

quoted

From: "Kirill A. Shutemov" <redacted>

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 ?

quoted

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 ?

Sure.

quoted

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.

Oh yea, must have been a late change.

Reviewed-by: Yan Zhao <redacted>