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 #ifdef CONFIG_HYPERVISOR_GUEST 24 25 #include <asm/kvm_para.h> 26 #include <asm/xen/hypervisor.h> 27 28 /* 29 * x86 hypervisor information 30 */ 31 struct hypervisor_x86 { 32 /* Hypervisor name */ 33 const char *name; 34 35 /* Detection routine */ 36 uint32_t (*detect)(void); 37 38 /* Platform setup (run once per boot) */ 39 void (*init_platform)(void); 40 41 /* X2APIC detection (run once per boot) */ 42 bool (*x2apic_available)(void); 43 44 /* pin current vcpu to specified physical cpu (run rarely) */ 45 void (*pin_vcpu)(int); 46 47 /* called during init_mem_mapping() to setup early mappings. */ 48 void (*init_mem_mapping)(void); 49 }; 50 51 extern const struct hypervisor_x86 *x86_hyper; 52 53 /* Recognized hypervisors */ 54 extern const struct hypervisor_x86 x86_hyper_vmware; 55 extern const struct hypervisor_x86 x86_hyper_ms_hyperv; 56 extern const struct hypervisor_x86 x86_hyper_xen_pv; 57 extern const struct hypervisor_x86 x86_hyper_xen_hvm; 58 extern const struct hypervisor_x86 x86_hyper_kvm; 59 60 extern void init_hypervisor_platform(void); 61 extern bool hypervisor_x2apic_available(void); 62 extern void hypervisor_pin_vcpu(int cpu); 63 64 static inline void hypervisor_init_mem_mapping(void) 65 { 66 if (x86_hyper && x86_hyper->init_mem_mapping) 67 x86_hyper->init_mem_mapping(); 68 } 69 #else 70 static inline void init_hypervisor_platform(void) { } 71 static inline bool hypervisor_x2apic_available(void) { return false; } 72 static inline void hypervisor_init_mem_mapping(void) { } 73 #endif /* CONFIG_HYPERVISOR_GUEST */ 74 #endif /* _ASM_X86_HYPERVISOR_H */ 75