| /****************************************************************************** |
| * hypervisor.h |
| * |
| * Linux-specific hypervisor handling. |
| * |
| * Copyright (c) 2002-2004, K A Fraser |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License version 2 |
| * as published by the Free Software Foundation; or, when distributed |
| * separately from the Linux kernel or incorporated into other |
| * software packages, subject to the following license: |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this source file (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. |
| */ |
| |
| #ifndef _ASM_X86_XEN_HYPERVISOR_H |
| #define _ASM_X86_XEN_HYPERVISOR_H |
| |
| extern struct shared_info *HYPERVISOR_shared_info; |
| extern struct start_info *xen_start_info; |
| |
| #include <asm/processor.h> |
| |
| static inline uint32_t xen_cpuid_base(void) |
| { |
| return hypervisor_cpuid_base("XenVMMXenVMM", 2); |
| } |
| |
| #ifdef CONFIG_XEN |
| extern bool xen_hvm_need_lapic(void); |
| |
| static inline bool xen_x2apic_para_available(void) |
| { |
| return xen_hvm_need_lapic(); |
| } |
| #else |
| static inline bool xen_x2apic_para_available(void) |
| { |
| return (xen_cpuid_base() != 0); |
| } |
| #endif |
| |
| #ifdef CONFIG_HOTPLUG_CPU |
| void xen_arch_register_cpu(int num); |
| void xen_arch_unregister_cpu(int num); |
| #endif |
| |
| #endif /* _ASM_X86_XEN_HYPERVISOR_H */ |