virt/kvm/coalesced_mmio.h

   1 #ifndef __KVM_COALESCED_MMIO_H__
   2 #define __KVM_COALESCED_MMIO_H__
   3
   4 /*
   5  * KVM coalesced MMIO
   6  *
   7  * Copyright (c) 2008 Bull S.A.S.
   8  *
   9  *  Author: Laurent Vivier <Laurent.Vivier@bull.net>
  10  *
  11  */
  12
  13 #ifdef CONFIG_KVM_MMIO
  14
  15 #define KVM_COALESCED_MMIO_ZONE_MAX 100
  16
  17 struct kvm_coalesced_mmio_dev {
  18         struct kvm_io_device dev;
  19         struct kvm *kvm;
  20         spinlock_t lock;
  21         int nb_zones;
  22         struct kvm_coalesced_mmio_zone zone[KVM_COALESCED_MMIO_ZONE_MAX];
  23 };
  24
  25 int kvm_coalesced_mmio_init(struct kvm *kvm);
  26 void kvm_coalesced_mmio_free(struct kvm *kvm);
  27 int kvm_vm_ioctl_register_coalesced_mmio(struct kvm *kvm,
  28                                        struct kvm_coalesced_mmio_zone *zone);
  29 int kvm_vm_ioctl_unregister_coalesced_mmio(struct kvm *kvm,
  30                                          struct kvm_coalesced_mmio_zone *zone);
  31
  32 #else
  33
  34 static inline int kvm_coalesced_mmio_init(struct kvm *kvm) { return 0; }
  35 static inline void kvm_coalesced_mmio_free(struct kvm *kvm) { }
  36
  37 #endif
  38
  39 #endif