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