There wasn't any such features for x86 when the patch was created, other than AES-NI.
Many hardware platforms that have TPM, have it connected via a low-bandwidth LPC bus which would have nowhere near enough bandwidth for demand decryption/encryption of memory pages.
Hardware vendors can apparently turn these security features off as they wish, even if the hardware supports and was shipped with it :)
There wasn't any such features for x86 when the patch was created, other than AES-NI.
Many hardware platforms that have TPM, have it connected via a low-bandwidth LPC bus which would have nowhere near enough bandwidth for demand decryption/encryption of memory pages.
Hardware vendors can apparently turn these security features off as they wish, even if the hardware supports and was shipped with it :)