Antoine Linarès

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When the ss instruction accesses a page table entry with xwr=3b001 and the memory attribute is non-idempotent, should it report a store/AMO access-fault fault or a store/AMO page-fault ？

Hello, for the priority of errors, you should refer to the privilege spec's "virtual address translation process" section. So the fault given is the one according to shadow stack access...

When the ss instruction accesses a page table entry with xwr=3b001 and the memory attribute is non-idempotent, should it report a store/AMO access-fault fault or a store/AMO page-fault ？

Your understanding is correct

When the ss instruction accesses a page table entry with xwr=3b001 and the memory attribute is non-idempotent, should it report a store/AMO access-fault fault or a store/AMO page-fault ？

you're welcome!