Oleksandr Tyshchenko writes ("[PATCH V5 2/3] libxl/arm: Add handling of extended regions for DomU"): > The extended region (safe range) is a region of guest physical > address space which is unused and could be safely used to create > grant/foreign mappings instead of wasting real RAM pages from > the domain memory for establishing these mappings.
Please forgive me for asking this question now, but: why is this ARM-specific ? Ian.