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