search for: cpl0

...run at a dynamic privilege + level, since if entry to paravirtual mode is successful, the kernel + is no longer allowed to run at the highest hardware privilege level. + On the IA-32 architecture, this means the kernel will be running at + CPL 1-2, and with the hypervisor running at CPL0, and user code at + CPL3. The IOPL will be lowered as well to avoid giving the guest + direct access to hardware ports and control of the interrupt flag. + + This change causes certain IA-32 instructions to become "sensitive", + so additional support for clearing and sett...

...run at a dynamic privilege + level, since if entry to paravirtual mode is successful, the kernel + is no longer allowed to run at the highest hardware privilege level. + On the IA-32 architecture, this means the kernel will be running at + CPL 1-2, and with the hypervisor running at CPL0, and user code at + CPL3. The IOPL will be lowered as well to avoid giving the guest + direct access to hardware ports and control of the interrupt flag. + + This change causes certain IA-32 instructions to become "sensitive", + so additional support for clearing and sett...