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- /******************************************************************************
- * features.h
- *
- * Feature flags, reported by XENVER_get_features.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Copyright (c) 2006, Keir Fraser <keir@xensource.com>
- */
-
- #ifndef __XEN_PUBLIC_FEATURES_H__
- #define __XEN_PUBLIC_FEATURES_H__
-
- FILE_LICENCE ( MIT );
-
- /*
- * `incontents 200 elfnotes_features XEN_ELFNOTE_FEATURES
- *
- * The list of all the features the guest supports. They are set by
- * parsing the XEN_ELFNOTE_FEATURES and XEN_ELFNOTE_SUPPORTED_FEATURES
- * string. The format is the feature names (as given here without the
- * "XENFEAT_" prefix) separated by '|' characters.
- * If a feature is required for the kernel to function then the feature name
- * must be preceded by a '!' character.
- *
- * Note that if XEN_ELFNOTE_SUPPORTED_FEATURES is used, then in the
- * XENFEAT_dom0 MUST be set if the guest is to be booted as dom0,
- */
-
- /*
- * 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
-
- #define XENFEAT_NR_SUBMAPS 1
-
- #endif /* __XEN_PUBLIC_FEATURES_H__ */
-
- /*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
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