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The current path of the Xen headers at /sys/xen/interface/ is not correct, as those headers are imported verbatim from the Xen sources and shouldn't be modified, as any modifications would be lost when a new version is imported. Changes to the public headers must be first done in Xen upstream so that they can be backported and new imports will already carry them. Import Xen 4.16 headers in sys/contrib/xen/. It's unlikely that we will import different Xen code, so don't place them inside of any subdirectory. If in the future other pieces of Xen code need to be imported the headers will need to move into an include/ subdirectory. Note that this commit does not yet modify the include path to use the newly imported headers. Sponsored by: Citrix Systems R&D
144 lines
5 KiB
C
144 lines
5 KiB
C
/******************************************************************************
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* features.h
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*
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* Feature flags, reported by XENVER_get_features.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Copyright (c) 2006, Keir Fraser <keir@xensource.com>
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*/
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#ifndef __XEN_PUBLIC_FEATURES_H__
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#define __XEN_PUBLIC_FEATURES_H__
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/*
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* `incontents 200 elfnotes_features XEN_ELFNOTE_FEATURES
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*
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* The list of all the features the guest supports. They are set by
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* parsing the XEN_ELFNOTE_FEATURES and XEN_ELFNOTE_SUPPORTED_FEATURES
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* string. The format is the feature names (as given here without the
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* "XENFEAT_" prefix) separated by '|' characters.
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* If a feature is required for the kernel to function then the feature name
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* must be preceded by a '!' character.
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*
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* Note that if XEN_ELFNOTE_SUPPORTED_FEATURES is used, then in the
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* XENFEAT_dom0 MUST be set if the guest is to be booted as dom0,
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*/
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/*
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* If set, the guest does not need to write-protect its pagetables, and can
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* update them via direct writes.
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*/
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#define XENFEAT_writable_page_tables 0
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/*
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* If set, the guest does not need to write-protect its segment descriptor
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* tables, and can update them via direct writes.
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*/
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#define XENFEAT_writable_descriptor_tables 1
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/*
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* If set, translation between the guest's 'pseudo-physical' address space
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* and the host's machine address space are handled by the hypervisor. In this
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* mode the guest does not need to perform phys-to/from-machine translations
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* when performing page table operations.
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*/
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#define XENFEAT_auto_translated_physmap 2
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/* If set, the guest is running in supervisor mode (e.g., x86 ring 0). */
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#define XENFEAT_supervisor_mode_kernel 3
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/*
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* If set, the guest does not need to allocate x86 PAE page directories
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* below 4GB. This flag is usually implied by auto_translated_physmap.
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*/
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#define XENFEAT_pae_pgdir_above_4gb 4
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/* x86: Does this Xen host support the MMU_PT_UPDATE_PRESERVE_AD hypercall? */
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#define XENFEAT_mmu_pt_update_preserve_ad 5
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/* x86: Does this Xen host support the MMU_{CLEAR,COPY}_PAGE hypercall? */
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#define XENFEAT_highmem_assist 6
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/*
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* If set, GNTTABOP_map_grant_ref honors flags to be placed into guest kernel
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* available pte bits.
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*/
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#define XENFEAT_gnttab_map_avail_bits 7
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/* x86: Does this Xen host support the HVM callback vector type? */
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#define XENFEAT_hvm_callback_vector 8
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/* x86: pvclock algorithm is safe to use on HVM */
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#define XENFEAT_hvm_safe_pvclock 9
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/* x86: pirq can be used by HVM guests */
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#define XENFEAT_hvm_pirqs 10
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/* operation as Dom0 is supported */
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#define XENFEAT_dom0 11
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/* Xen also maps grant references at pfn = mfn.
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* This feature flag is deprecated and should not be used.
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#define XENFEAT_grant_map_identity 12
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*/
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/* Guest can use XENMEMF_vnode to specify virtual node for memory op. */
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#define XENFEAT_memory_op_vnode_supported 13
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/* arm: Hypervisor supports ARM SMC calling convention. */
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#define XENFEAT_ARM_SMCCC_supported 14
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/*
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* x86/PVH: If set, ACPI RSDP can be placed at any address. Otherwise RSDP
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* must be located in lower 1MB, as required by ACPI Specification for IA-PC
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* systems.
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* This feature flag is only consulted if XEN_ELFNOTE_GUEST_OS contains
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* the "linux" string.
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*/
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#define XENFEAT_linux_rsdp_unrestricted 15
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/*
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* A direct-mapped (or 1:1 mapped) domain is a domain for which its
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* local pages have gfn == mfn. If a domain is direct-mapped,
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* XENFEAT_direct_mapped is set; otherwise XENFEAT_not_direct_mapped
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* is set.
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*
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* If neither flag is set (e.g. older Xen releases) the assumptions are:
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* - not auto_translated domains (x86 only) are always direct-mapped
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* - on x86, auto_translated domains are not direct-mapped
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* - on ARM, Dom0 is direct-mapped, DomUs are not
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*/
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#define XENFEAT_not_direct_mapped 16
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#define XENFEAT_direct_mapped 17
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#define XENFEAT_NR_SUBMAPS 1
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#endif /* __XEN_PUBLIC_FEATURES_H__ */
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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