On 5/16/23 11:08, Ard Biesheuvel wrote: >> But, this approach does not work for unaccepted memory. For TDX, a load >> from unaccepted memory will not lead to a recoverable exception within >> the guest. The guest will exit to the VMM where the only recourse is to >> terminate the guest. >> > Does this mean that the kernel maps memory before accepting it? As > otherwise, I would assume that such an access would page fault inside > the guest before triggering an exception related to the unaccepted > state. Yes, the kernel maps memory before accepting it (modulo things like DEBUG_PAGEALLOC).
