Re: [PATCH v2] sparc64: Add support for Application Data Integrity (ADI)

[David Miller]

From: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Date: Mon, 7 Mar 2016 10:49:57 -0800

> What data structure or structures changes when this stxa instruction happens?

An internal table, maintained by the CPU and/or hypervisor, and if in physical
addresses then in a region which is only accessible by the hypervisor.

The table is not accessible by the kernel at all via loads or stores.