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