LXR linux/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#ifdef CONFIG_HYPERVISOR_GUEST
  24
  25#include <asm/kvm_para.h>
  26#include <asm/xen/hypervisor.h>
  27
  28/*
  29 * x86 hypervisor information
  30 */
  31struct 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
  51extern const struct hypervisor_x86 *x86_hyper;
  52
  53/* Recognized hypervisors */
  54extern const struct hypervisor_x86 x86_hyper_vmware;
  55extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
  56extern const struct hypervisor_x86 x86_hyper_xen_pv;
  57extern const struct hypervisor_x86 x86_hyper_xen_hvm;
  58extern const struct hypervisor_x86 x86_hyper_kvm;
  59
  60extern void init_hypervisor_platform(void);
  61extern bool hypervisor_x2apic_available(void);
  62extern void hypervisor_pin_vcpu(int cpu);
  63
  64static 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
  70static inline void init_hypervisor_platform(void) { }
  71static inline bool hypervisor_x2apic_available(void) { return false; }
  72static inline void hypervisor_init_mem_mapping(void) { }
  73#endif /* CONFIG_HYPERVISOR_GUEST */
  74#endif /* _ASM_X86_HYPERVISOR_H */
  75