arch/x86/include/asm/hypervisor.h

   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 /* x86 hypervisor types  */
  24 enum x86_hypervisor_type {
  25         X86_HYPER_NATIVE = 0,
  26         X86_HYPER_VMWARE,
  27         X86_HYPER_MS_HYPERV,
  28         X86_HYPER_XEN_PV,
  29         X86_HYPER_XEN_HVM,
  30         X86_HYPER_KVM,
  31 };
  32
  33 #ifdef CONFIG_HYPERVISOR_GUEST
  34
  35 #include <asm/kvm_para.h>
  36 #include <asm/x86_init.h>
  37 #include <asm/xen/hypervisor.h>
  38
  39 struct hypervisor_x86 {
  40         /* Hypervisor name */
  41         const char      *name;
  42
  43         /* Detection routine */
  44         uint32_t        (*detect)(void);
  45
  46         /* Hypervisor type */
  47         enum x86_hypervisor_type type;
  48
  49         /* init time callbacks */
  50         struct x86_hyper_init init;
  51
  52         /* runtime callbacks */
  53         struct x86_hyper_runtime runtime;
  54 };
  55
  56 extern enum x86_hypervisor_type x86_hyper_type;
  57 extern void init_hypervisor_platform(void);
  58 static inline bool hypervisor_is_type(enum x86_hypervisor_type type)
  59 {
  60         return x86_hyper_type == type;
  61 }
  62 #else
  63 static inline void init_hypervisor_platform(void) { }
  64 static inline bool hypervisor_is_type(enum x86_hypervisor_type type)
  65 {
  66         return type == X86_HYPER_NATIVE;
  67 }
  68 #endif /* CONFIG_HYPERVISOR_GUEST */
  69 #endif /* _ASM_X86_HYPERVISOR_H */