__ __ __ __ _____ _ _ _____ _ _ _
| \/ | \ \ / / | __ \ (_) | | / ____| | | | |
| \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | |
| |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | |
| | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | |
|_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1
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/* 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
/*
* A direct-mapped (or 1:1 mapped) domain is a domain for which its
* local pages have gfn == mfn. If a domain is direct-mapped,
* XENFEAT_direct_mapped is set; otherwise XENFEAT_not_direct_mapped
* is set.
*
* If neither flag is set (e.g. older Xen releases) the assumptions are:
* - not auto_translated domains (x86 only) are always direct-mapped
* - on x86, auto_translated domains are not direct-mapped
* - on ARM, Dom0 is direct-mapped, DomUs are not
*/
#define XENFEAT_not_direct_mapped 16
#define XENFEAT_direct_mapped 17
#define XENFEAT_NR_SUBMAPS 1
#endif /* __XEN_PUBLIC_FEATURES_H__ */