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_init_vcpu(CPUState *cpu)
  36 {
  37     return -ENOSYS;
  38 }
  39
  40 void kvm_flush_coalesced_mmio_buffer(void)
  41 {
  42 }
  43
  44 void kvm_cpu_synchronize_state(CPUState *cpu)
  45 {
  46 }
  47
  48 void kvm_cpu_synchronize_post_reset(CPUState *cpu)
  49 {
  50 }
  51
  52 void kvm_cpu_synchronize_post_init(CPUState *cpu)
  53 {
  54 }
  55
  56 int kvm_cpu_exec(CPUState *cpu)
  57 {
  58     abort();
  59 }
  60
  61 int kvm_has_sync_mmu(void)
  62 {
  63     return 0;
  64 }
  65
  66 int kvm_has_many_ioeventfds(void)
  67 {
  68     return 0;
  69 }
  70
  71 void kvm_setup_guest_memory(void *start, size_t size)
  72 {
  73 }
  74
  75 int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap)
  76 {
  77     return -ENOSYS;
  78 }
  79
  80 int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
  81                           target_ulong len, int type)
  82 {
  83     return -EINVAL;
  84 }
  85
  86 int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
  87                           target_ulong len, int type)
  88 {
  89     return -EINVAL;
  90 }
  91
  92 void kvm_remove_all_breakpoints(CPUState *cpu)
  93 {
  94 }
  95
  96 #ifndef _WIN32
  97 int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset)
  98 {
  99     abort();
 100 }
 101 #endif
 102
 103 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
 104 {
 105     return 1;
 106 }
 107
 108 int kvm_on_sigbus(int code, void *addr)
 109 {
 110     return 1;
 111 }
 112
 113 #ifndef CONFIG_USER_ONLY
 114 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg, PCIDevice *dev)
 115 {
 116     return -ENOSYS;
 117 }
 118
 119 void kvm_init_irq_routing(KVMState *s)
 120 {
 121 }
 122
 123 void kvm_irqchip_release_virq(KVMState *s, int virq)
 124 {
 125 }
 126
 127 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
 128                                  PCIDevice *dev)
 129 {
 130     return -ENOSYS;
 131 }
 132
 133 int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter)
 134 {
 135     return -ENOSYS;
 136 }
 137
 138 int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 139                                        EventNotifier *rn, int virq)
 140 {
 141     return -ENOSYS;
 142 }
 143
 144 int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 145                                           int virq)
 146 {
 147     return -ENOSYS;
 148 }
 149
 150 bool kvm_has_free_slot(MachineState *ms)
 151 {
 152     return false;
 153 }
 154 #endif