uivm: Support running as a PVH guest.

Description

UIVM does not have obvious limitation preventing it to run as a PVH guest.

Security benefits[[1]|https://wiki.xenproject.org/wiki/PVH_(v2)_Domu] [[2]|https://docs.google.com/spreadsheets/d/1h9z98xW5COh2YuH7nOeTsjLGZ-k_Cl2FmLEiXOyeyZQ/htmlview] of running PVH should make it a preferred unless otherwise impossible.

Validation Steps

  1. Confirm guest type is PVH instead of PV 64bit.

  2. Regression testing

  3. No user functional changes

Fixed

Assignee

Eric Chanudet

Reporter

Eric Chanudet

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