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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103/* SPDX-License-Identifier: MIT *//****************************************************************************** * 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__ */