Fast-track extension proposal for H/W PTE A/D updating

Ved Shanbhogue

Greetings !

We are submitting for your consideration an extension for HW PTE A/D updating (Svadu) controls.

As you might recall the privileged specification defines two HW behaviors for PTE A/D bits if they are 0 when required to be 1:
- to cause a (guest) page fault
- to update the A and/or D bitsĀ 

This extension provides controls to select between the behaviors.

Please find the PDF and source here:

Please add comments/issues in github or to this thread.


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