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 "cpu.h"
  15 #include "sysemu/kvm.h"
  16
  17 #ifndef CONFIG_USER_ONLY
  18 #include "hw/pci/msi.h"
  19 #endif
  20
  21 KVMState *kvm_state;
  22 bool kvm_kernel_irqchip;
  23 bool kvm_async_interrupts_allowed;
  24 bool kvm_eventfds_allowed;
  25 bool kvm_irqfds_allowed;
  26 bool kvm_resamplefds_allowed;
  27 bool kvm_msi_via_irqfd_allowed;
  28 bool kvm_gsi_routing_allowed;
  29 bool kvm_gsi_direct_mapping;
  30 bool kvm_allowed;
  31 bool kvm_readonly_mem_allowed;
  32 bool kvm_ioeventfd_any_length_allowed;
  33 bool kvm_msi_use_devid;
  34
  35 int kvm_destroy_vcpu(CPUState *cpu)
  36 {
  37     return -ENOSYS;
  38 }
  39
  40 int kvm_init_vcpu(CPUState *cpu)
  41 {
  42     return -ENOSYS;
  43 }
  44
  45 void kvm_flush_coalesced_mmio_buffer(void)
  46 {
  47 }
  48
  49 void kvm_cpu_synchronize_state(CPUState *cpu)
  50 {
  51 }
  52
  53 void kvm_cpu_synchronize_post_reset(CPUState *cpu)
  54 {
  55 }
  56
  57 void kvm_cpu_synchronize_post_init(CPUState *cpu)
  58 {
  59 }
  60
  61 int kvm_cpu_exec(CPUState *cpu)
  62 {
  63     abort();
  64 }
  65
  66 bool kvm_has_sync_mmu(void)
  67 {
  68     return false;
  69 }
  70
  71 int kvm_has_many_ioeventfds(void)
  72 {
  73     return 0;
  74 }
  75
  76 int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap)
  77 {
  78     return -ENOSYS;
  79 }
  80
  81 int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
  82                           target_ulong len, int type)
  83 {
  84     return -EINVAL;
  85 }
  86
  87 int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
  88                           target_ulong len, int type)
  89 {
  90     return -EINVAL;
  91 }
  92
  93 void kvm_remove_all_breakpoints(CPUState *cpu)
  94 {
  95 }
  96
  97 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
  98 {
  99     return 1;
 100 }
 101
 102 int kvm_on_sigbus(int code, void *addr)
 103 {
 104     return 1;
 105 }
 106
 107 bool kvm_memcrypt_enabled(void)
 108 {
 109     return false;
 110 }
 111
 112 int kvm_memcrypt_encrypt_data(uint8_t *ptr, uint64_t len)
 113 {
 114   return 1;
 115 }
 116
 117 #ifndef CONFIG_USER_ONLY
 118 int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
 119 {
 120     return -ENOSYS;
 121 }
 122
 123 void kvm_init_irq_routing(KVMState *s)
 124 {
 125 }
 126
 127 void kvm_irqchip_release_virq(KVMState *s, int virq)
 128 {
 129 }
 130
 131 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
 132                                  PCIDevice *dev)
 133 {
 134     return -ENOSYS;
 135 }
 136
 137 void kvm_irqchip_commit_routes(KVMState *s)
 138 {
 139 }
 140
 141 void kvm_irqchip_add_change_notifier(Notifier *n)
 142 {
 143 }
 144
 145 void kvm_irqchip_remove_change_notifier(Notifier *n)
 146 {
 147 }
 148
 149 void kvm_irqchip_change_notify(void)
 150 {
 151 }
 152
 153 int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter)
 154 {
 155     return -ENOSYS;
 156 }
 157
 158 int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 159                                        EventNotifier *rn, int virq)
 160 {
 161     return -ENOSYS;
 162 }
 163
 164 int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 165                                           int virq)
 166 {
 167     return -ENOSYS;
 168 }
 169
 170 bool kvm_has_free_slot(MachineState *ms)
 171 {
 172     return false;
 173 }
 174
 175 void kvm_init_cpu_signals(CPUState *cpu)
 176 {
 177     abort();
 178 }
 179
 180 bool kvm_arm_supports_user_irq(void)
 181 {
 182     return false;
 183 }
 184 #endif