On Wed, Oct 26, 2022 at 07:44:05PM -0500, Scott Johnson wrote:

This constraint appears new:

Svadu extension requires the page tables to be located in cacheable main memory PMA regions.

What happens if they are not? Access fault? Unspecified?

This is addressed by the step 2 and 7.a of the translation process:
2. If accessing pte violates a PMA or PMP check, raise
an access-fault exception corresponding to the
original access type.
7.a. If a store to pte would violate a PMA or PMP check,
raise an access-fault exception corresponding to the
original access type.

regards
ved