/****************************************************************************** * 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 /* x86: Does this Xen host support the MMU_PT_UPDATE_PRESERVE_AD hypercall? */#define XENFEAT_mmu_pt_update_preserve_ad  5 /* x86: Does this Xen host support the HVM callback vector type? */#define XENFEAT_hvm_callback_vector        8 /* x86: pvclock algorithm is safe to use on HVM */#define XENFEAT_hvm_safe_pvclock           9 /* x86: pirq can be used by HVM guests */#define XENFEAT_hvm_pirqs           10 #define XENFEAT_NR_SUBMAPS 1 #endif /* __XEN_PUBLIC_FEATURES_H__ */