forked from Minki/linux
44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
|
/******************************************************************************
|
||
|
|
* 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__ */
|