libkvm/kvm-x86.h

   1 /*
   2  * This header is for functions & variables that will ONLY be
   3  * used inside libkvm for x86.
   4  * THESE ARE NOT EXPOSED TO THE USER AND ARE ONLY FOR USE
   5  * WITHIN LIBKVM.
   6  *
   7  * derived from libkvm.c
   8  *
   9  * Copyright (C) 2006 Qumranet, Inc.
  10  *
  11  * Authors:
  12  *      Avi Kivity   <avi@qumranet.com>
  13  *      Yaniv Kamay  <yaniv@qumranet.com>
  14  *
  15  * This work is licensed under the GNU LGPL license, version 2.
  16  */
  17
  18 #ifndef KVM_X86_H
  19 #define KVM_X86_H
  20
  21 #include "kvm-common.h"
  22
  23 #define PAGE_SIZE 4096ul
  24 #define PAGE_MASK (~(PAGE_SIZE - 1))
  25
  26 int kvm_set_tss_addr(kvm_context_t kvm, unsigned long addr);
  27
  28 #ifdef KVM_CAP_VAPIC
  29
  30 /*!
  31  * \brief Enable kernel tpr access reporting
  32  *
  33  * When tpr access reporting is enabled, the kernel will call the
  34  * ->tpr_access() callback every time the guest vcpu accesses the tpr.
  35  *
  36  * \param kvm Pointer to the current kvm_context
  37  * \param vcpu vcpu to enable tpr access reporting on
  38  */
  39 int kvm_enable_tpr_access_reporting(kvm_context_t kvm, int vcpu);
  40
  41 /*!
  42  * \brief Disable kernel tpr access reporting
  43  *
  44  * Undoes the effect of kvm_enable_tpr_access_reporting().
  45  *
  46  * \param kvm Pointer to the current kvm_context
  47  * \param vcpu vcpu to disable tpr access reporting on
  48  */
  49 int kvm_disable_tpr_access_reporting(kvm_context_t kvm, int vcpu);
  50
  51 #endif
  52
  53 #define smp_wmb()   asm volatile("" ::: "memory")
  54
  55 #endif