On 1/30/22 13:18, Rick Edgecombe wrote: > Add the user shadow stack MSRs to the xsave helpers, so they can be used > to implement the functionality. Do these MSRs ever affect kernel-mode operation? If so, we might need to switch them more aggressively at context-switch time like PKRU. If not, they can continue to be context-switched with the PASID state which does not affect kernel-mode operation. Either way, it would be nice to have some changelog material to that effect.
