1 /****************************************************************************** 2 * hypervisor.h 3 * 4 * Linux-specific hypervisor handling. 5 * 6 * Copyright (c) 2002-2004, K A Fraser 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License version 2 10 * as published by the Free Software Foundation; or, when distributed 11 * separately from the Linux kernel or incorporated into other 12 * software packages, subject to the following license: 13 * 14 * Permission is hereby granted, free of charge, to any person obtaining a copy 15 * of this source file (the "Software"), to deal in the Software without 16 * restriction, including without limitation the rights to use, copy, modify, 17 * merge, publish, distribute, sublicense, and/or sell copies of the Software, 18 * and to permit persons to whom the Software is furnished to do so, subject to 19 * the following conditions: 20 * 21 * The above copyright notice and this permission notice shall be included in 22 * all copies or substantial portions of the Software. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 30 * IN THE SOFTWARE. 31 */ 32 33 #ifndef _ASM_X86_XEN_HYPERVISOR_H 34 #define _ASM_X86_XEN_HYPERVISOR_H 35 36 #include <linux/types.h> 37 #include <linux/kernel.h> 38 39 #include <xen/interface/xen.h> 40 #include <xen/interface/version.h> 41 42 #include <asm/ptrace.h> 43 #include <asm/page.h> 44 #include <asm/desc.h> 45 #if defined(__i386__) 46 # ifdef CONFIG_X86_PAE 47 # include <asm-generic/pgtable-nopud.h> 48 # else 49 # include <asm-generic/pgtable-nopmd.h> 50 # endif 51 #endif 52 #include <asm/xen/hypercall.h> 53 54 /* arch/i386/kernel/setup.c */ 55 extern struct shared_info *HYPERVISOR_shared_info; 56 extern struct start_info *xen_start_info; 57 58 /* arch/i386/mach-xen/evtchn.c */ 59 /* Force a proper event-channel callback from Xen. */ 60 extern void force_evtchn_callback(void); 61 62 /* Turn jiffies into Xen system time. */ 63 u64 jiffies_to_st(unsigned long jiffies); 64 65 66 #define MULTI_UVMFLAGS_INDEX 3 67 #define MULTI_UVMDOMID_INDEX 4 68 69 enum xen_domain_type { 70 XEN_NATIVE, 71 XEN_PV_DOMAIN, 72 XEN_HVM_DOMAIN, 73 }; 74 75 extern enum xen_domain_type xen_domain_type; 76 77 #define xen_domain() (xen_domain_type != XEN_NATIVE) 78 #define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN) 79 #define xen_initial_domain() (xen_pv_domain() && xen_start_info->flags & SIF_INITDOMAIN) 80 #define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN) 81 82 #endif /* _ASM_X86_XEN_HYPERVISOR_H */ 83