1 /* 2 * Copyright (C) 2008, VMware, Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, but 10 * WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 12 * NON INFRINGEMENT. See the GNU General Public License for more 13 * details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 */ 20 #ifndef _ASM_X86_HYPERVISOR_H 21 #define _ASM_X86_HYPERVISOR_H 22 23 #include <asm/kvm_para.h> 24 #include <asm/xen/hypervisor.h> 25 26 extern void init_hypervisor(struct cpuinfo_x86 *c); 27 extern void init_hypervisor_platform(void); 28 29 /* 30 * x86 hypervisor information 31 */ 32 struct hypervisor_x86 { 33 /* Hypervisor name */ 34 const char *name; 35 36 /* Detection routine */ 37 bool (*detect)(void); 38 39 /* Adjust CPU feature bits (run once per CPU) */ 40 void (*set_cpu_features)(struct cpuinfo_x86 *); 41 42 /* Platform setup (run once per boot) */ 43 void (*init_platform)(void); 44 }; 45 46 extern const struct hypervisor_x86 *x86_hyper; 47 48 /* Recognized hypervisors */ 49 extern const struct hypervisor_x86 x86_hyper_vmware; 50 extern const struct hypervisor_x86 x86_hyper_ms_hyperv; 51 extern const struct hypervisor_x86 x86_hyper_xen_hvm; 52 extern const struct hypervisor_x86 x86_hyper_kvm; 53 54 static inline bool hypervisor_x2apic_available(void) 55 { 56 if (kvm_para_available()) 57 return true; 58 if (xen_x2apic_para_available()) 59 return true; 60 return false; 61 } 62 63 #endif 64