accel/stubs/kvm-stub.c

   1 /*
   2  * QEMU KVM stub
   3  *
   4  * Copyright Red Hat, Inc. 2010
   5  *
   6  * Author: Paolo Bonzini     <pbonzini@redhat.com>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   9  * See the COPYING file in the top-level directory.
  10  *
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "sysemu/kvm.h"
  15 #include "hw/pci/msi.h"
  16
  17 KVMState *kvm_state;
  18 bool kvm_kernel_irqchip;
  19 bool kvm_async_interrupts_allowed;
  20 bool kvm_eventfds_allowed;
  21 bool kvm_irqfds_allowed;
  22 bool kvm_resamplefds_allowed;
  23 bool kvm_msi_via_irqfd_allowed;
  24 bool kvm_gsi_routing_allowed;
  25 bool kvm_gsi_direct_mapping;
  26 bool kvm_allowed;
  27 bool kvm_readonly_mem_allowed;
  28 bool kvm_ioeventfd_any_length_allowed;
  29 bool kvm_msi_use_devid;
  30
  31 void kvm_flush_coalesced_mmio_buffer(void)
  32 {
  33 }
  34
  35 void kvm_cpu_synchronize_state(CPUState *cpu)
  36 {
  37 }
  38
  39 bool kvm_has_sync_mmu(void)
  40 {
  41     return false;
  42 }
  43
  44 int kvm_has_many_ioeventfds(void)
  45 {
  46     return 0;
  47 }
  48
  49 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
  50 {
  51     return 1;
  52 }
  53
  54 int kvm_on_sigbus(int code, void *addr)
  55 {
  56     return 1;
  57 }
  58
  59 int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev)
  60 {
  61     return -ENOSYS;
  62 }
  63
  64 void kvm_init_irq_routing(KVMState *s)
  65 {
  66 }
  67
  68 void kvm_irqchip_release_virq(KVMState *s, int virq)
  69 {
  70 }
  71
  72 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
  73                                  PCIDevice *dev)
  74 {
  75     return -ENOSYS;
  76 }
  77
  78 void kvm_irqchip_commit_routes(KVMState *s)
  79 {
  80 }
  81
  82 void kvm_irqchip_add_change_notifier(Notifier *n)
  83 {
  84 }
  85
  86 void kvm_irqchip_remove_change_notifier(Notifier *n)
  87 {
  88 }
  89
  90 void kvm_irqchip_change_notify(void)
  91 {
  92 }
  93
  94 int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter)
  95 {
  96     return -ENOSYS;
  97 }
  98
  99 int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 100                                        EventNotifier *rn, int virq)
 101 {
 102     return -ENOSYS;
 103 }
 104
 105 int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 106                                           int virq)
 107 {
 108     return -ENOSYS;
 109 }
 110
 111 bool kvm_has_free_slot(MachineState *ms)
 112 {
 113     return false;
 114 }
 115
 116 void kvm_init_cpu_signals(CPUState *cpu)
 117 {
 118     abort();
 119 }
 120
 121 bool kvm_arm_supports_user_irq(void)
 122 {
 123     return false;
 124 }
 125
 126 bool kvm_dirty_ring_enabled(void)
 127 {
 128     return false;
 129 }
 130
 131 uint32_t kvm_dirty_ring_size(void)
 132 {
 133     return 0;
 134 }