| Term | Definition |
|---|---|
| locked protected mode stack | After switching a virtual machine to protected mode, a virtual device must lock into physical memory the protected mode stack used by the virtual machine so the stack won't be removed by demand paging. |
| protected mode application control block | Storage that is allocated when a virtual machine enters protected mode. When a virtual machine switches to protected mode, all virtual machines are notified, and one of the pieces of information included in the notification is a pointer to the protected mode application control block. |
There are the following protected-mode execution services:
| Allocate_PM_App_CB_Area | Get_Cur_PM_App_CB |
| Begin_Use_Locked_PM_Stack | Set_PM_Exec_Mode |
| End_Use_Locked_PM_Stack | Set_V86_Exec_Mode |
| Exec_PM_Int |