/* SPDX-License-Identifier: GPL-2.0 *//****************************************************************************** * 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 MMU_{CLEAR,COPY}_PAGE hypercall? */#define XENFEAT_highmem_assist             6 /* * If set, GNTTABOP_map_grant_ref honors flags to be placed into guest kernel * available pte bits. */#define XENFEAT_gnttab_map_avail_bits      7 /* 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 /* operation as Dom0 is supported */#define XENFEAT_dom0                      11 /* Xen also maps grant references at pfn = mfn. * This feature flag is deprecated and should not be used.#define XENFEAT_grant_map_identity        12 */ /* Guest can use XENMEMF_vnode to specify virtual node for memory op. */#define XENFEAT_memory_op_vnode_supported 13 /* arm: Hypervisor supports ARM SMC calling convention. */#define XENFEAT_ARM_SMCCC_supported       14 /* * x86/PVH: If set, ACPI RSDP can be placed at any address. Otherwise RSDP * must be located in lower 1MB, as required by ACPI Specification for IA-PC * systems. * This feature flag is only consulted if XEN_ELFNOTE_GUEST_OS contains * the "linux" string. */#define XENFEAT_linux_rsdp_unrestricted   15 #define XENFEAT_NR_SUBMAPS 1 #endif /* __XEN_PUBLIC_FEATURES_H__ */