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/******************************************************************************
 * features.h
 *
 * Feature flags, reported by XENVER_get_features.
 *
 * Copyright (c) 2006, Keir Fraser <keir@xensource.com>
 */
 
#ifndef __XEN_PUBLIC_FEATURES_H__
#define __XEN_PUBLIC_FEATURES_H__
 
/*
 * If set, the guest does not need to write-protect its pagetables, and can
 * update them via direct writes.
 */
#define XENFEAT_writable_page_tables       0
 
/*
 * If set, the guest does not need to write-protect its segment descriptor
 * tables, and can update them via direct writes.
 */
#define XENFEAT_writable_descriptor_tables 1
 
/*
 * If set, translation between the guest's 'pseudo-physical' address space
 * and the host's machine address space are handled by the hypervisor. In this
 * mode the guest does not need to perform phys-to/from-machine translations
 * when performing page table operations.
 */
#define XENFEAT_auto_translated_physmap    2
 
/* If set, the guest is running in supervisor mode (e.g., x86 ring 0). */
#define XENFEAT_supervisor_mode_kernel     3
 
/*
 * If set, the guest does not need to allocate x86 PAE page directories
 * below 4GB. This flag is usually implied by auto_translated_physmap.
 */
#define XENFEAT_pae_pgdir_above_4gb        4
 
#define XENFEAT_NR_SUBMAPS 1
 
#endif /* __XEN_PUBLIC_FEATURES_H__ */