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 #include "hw/pci/msi.h"
  16
  17 KVMState *kvm_state;
  18 bool kvm_kernel_irqchip;
  19 bool kvm_async_interrupts_allowed;
  20 bool kvm_eventfds_allowed;
  21 bool kvm_irqfds_allowed;
  22 bool kvm_resamplefds_allowed;
  23 bool kvm_msi_via_irqfd_allowed;
  24 bool kvm_gsi_routing_allowed;
  25 bool kvm_gsi_direct_mapping;
  26 bool kvm_allowed;
  27 bool kvm_readonly_mem_allowed;
  28 bool kvm_ioeventfd_any_length_allowed;
  29 bool kvm_msi_use_devid;
  30 bool kvm_direct_msi_allowed;
  31
  32 void kvm_flush_coalesced_mmio_buffer(void)
  33 {
  34 }
  35
  36 void kvm_cpu_synchronize_state(CPUState *cpu)
  37 {
  38 }
  39
  40 bool kvm_has_sync_mmu(void)
  41 {
  42     return false;
  43 }
  44
  45 int kvm_has_many_ioeventfds(void)
  46 {
  47     return 0;
  48 }
  49
  50 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
  51 {
  52     return 1;
  53 }
  54
  55 int kvm_on_sigbus(int code, void *addr)
  56 {
  57     return 1;
  58 }
  59
  60 int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev)
  61 {
  62     return -ENOSYS;
  63 }
  64
  65 void kvm_init_irq_routing(KVMState *s)
  66 {
  67 }
  68
  69 void kvm_irqchip_release_virq(KVMState *s, int virq)
  70 {
  71 }
  72
  73 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
  74                                  PCIDevice *dev)
  75 {
  76     return -ENOSYS;
  77 }
  78
  79 void kvm_irqchip_commit_routes(KVMState *s)
  80 {
  81 }
  82
  83 void kvm_irqchip_add_change_notifier(Notifier *n)
  84 {
  85 }
  86
  87 void kvm_irqchip_remove_change_notifier(Notifier *n)
  88 {
  89 }
  90
  91 void kvm_irqchip_change_notify(void)
  92 {
  93 }
  94
  95 int kvm_irqchip_add_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
  96                                        EventNotifier *rn, int virq)
  97 {
  98     return -ENOSYS;
  99 }
 100
 101 int kvm_irqchip_remove_irqfd_notifier_gsi(KVMState *s, EventNotifier *n,
 102                                           int virq)
 103 {
 104     return -ENOSYS;
 105 }
 106
 107 unsigned int kvm_get_max_memslots(void)
 108 {
 109     return 0;
 110 }
 111
 112 unsigned int kvm_get_free_memslots(void)
 113 {
 114     return 0;
 115 }
 116
 117 void kvm_init_cpu_signals(CPUState *cpu)
 118 {
 119     abort();
 120 }
 121
 122 bool kvm_arm_supports_user_irq(void)
 123 {
 124     return false;
 125 }
 126
 127 bool kvm_dirty_ring_enabled(void)
 128 {
 129     return false;
 130 }
 131
 132 uint32_t kvm_dirty_ring_size(void)
 133 {
 134     return 0;
 135 }