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
  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 int kvm_has_sync_mmu(void)
  67 {
  68     return 0;
  69 }
  70
  71 int kvm_has_many_ioeventfds(void)
  72 {
  73     return 0;
  74 }
  75
  76 void kvm_setup_guest_memory(void *start, size_t size)
  77 {
  78 }
  79
  80 int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap)
  81 {
  82     return -ENOSYS;
  83 }
  84
  85 int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
  86                           target_ulong len, int type)
  87 {
  88     return -EINVAL;
  89 }
  90
  91 int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
  92                           target_ulong len, int type)
  93 {
  94     return -EINVAL;
  95 }
  96
  97 void kvm_remove_all_breakpoints(CPUState *cpu)
  98 {
  99 }
 100
 101 #ifndef _WIN32
 102 int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset)
 103 {
 104     abort();
 105 }
 106 #endif
 107
 108 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
 109 {
 110     return 1;
 111 }
 112
 113 int kvm_on_sigbus(int code, void *addr)
 114 {
 115     return 1;
 116 }
 117
 118 #ifndef CONFIG_USER_ONLY
 119 int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
 120 {
 121     return -ENOSYS;
 122 }
 123
 124 void kvm_init_irq_routing(KVMState *s)
 125 {
 126 }
 127
 128 void kvm_irqchip_release_virq(KVMState *s, int virq)
 129 {
 130 }
 131
 132 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
 133                                  PCIDevice *dev)
 134 {
 135     return -ENOSYS;
 136 }
 137
 138 void kvm_irqchip_commit_routes(KVMState *s)
 139 {
 140 }
 141
 142 int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter)
 143 {
 144     return -ENOSYS;
 145 }
 146
 147 int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 148                                        EventNotifier *rn, int virq)
 149 {
 150     return -ENOSYS;
 151 }
 152
 153 int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 154                                           int virq)
 155 {
 156     return -ENOSYS;
 157 }
 158
 159 bool kvm_has_free_slot(MachineState *ms)
 160 {
 161     return false;
 162 }
 163 #endif