On 4/25/2025 3:17 PM, Yan Zhao wrote:
On Fri, Apr 25, 2025 at 03:12:32PM +0800, Binbin Wu wrote:
On 4/24/2025 11:04 AM, Yan Zhao wrote:
From: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
Add a wrapper tdh_mem_page_demote() to invoke SEAMCALL TDH_MEM_PAGE_DEMOTE
to demote a huge leaf entry to a non-leaf entry in S-EPT. Currently, the
TDX module only supports demotion of a 2M huge leaf entry. After a
successful demotion, the old 2M huge leaf entry in S-EPT is replaced with a
non-leaf entry, linking to the newly-added page table page. The newly
linked page table page then contains 512 leaf entries, pointing to the 2M
2M or 4K?
The 512 leaf entries point to 2M guest private pages together,
If this, it should be 2M range, since it's not a huge page after demotion.
Also, the plural "pages" is confusing.
each pointing to
4K.
guest private pages.
