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 #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
  53 static inline bool hypervisor_x2apic_available(void)
  54 {
  55         if (kvm_para_available())
  56                 return true;
  57         if (xen_x2apic_para_available())
  58                 return true;
  59         return false;
  60 }
  61
  62 #endif