4 * Copyright IBM, Corp. 2008
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
18 #include "config-host.h"
19 #include "qemu-queue.h"
22 #include <linux/kvm.h>
25 extern int kvm_allowed;
26 extern bool kvm_kernel_irqchip;
27 extern bool kvm_async_interrupts_allowed;
28 extern bool kvm_irqfds_allowed;
29 extern bool kvm_msi_via_irqfd_allowed;
30 extern bool kvm_gsi_routing_allowed;
32 #if defined CONFIG_KVM || !defined NEED_CPU_H
33 #define kvm_enabled() (kvm_allowed)
35 * kvm_irqchip_in_kernel:
37 * Returns: true if the user asked us to create an in-kernel
38 * irqchip via the "kernel_irqchip=on" machine option.
39 * What this actually means is architecture and machine model
40 * specific: on PC, for instance, it means that the LAPIC,
41 * IOAPIC and PIT are all in kernel. This function should never
42 * be used from generic target-independent code: use one of the
43 * following functions or some other specific check instead.
45 #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip)
48 * kvm_async_interrupts_enabled:
50 * Returns: true if we can deliver interrupts to KVM
51 * asynchronously (ie by ioctl from any thread at any time)
52 * rather than having to do interrupt delivery synchronously
53 * (where the vcpu must be stopped at a suitable point first).
55 #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed)
60 * Returns: true if we can use irqfds to inject interrupts into
61 * a KVM CPU (ie the kernel supports irqfds and we are running
62 * with a configuration where it is meaningful to use them).
64 #define kvm_irqfds_enabled() (kvm_irqfds_allowed)
67 * kvm_msi_via_irqfd_enabled:
69 * Returns: true if we can route a PCI MSI (Message Signaled Interrupt)
70 * to a KVM CPU via an irqfd. This requires that the kernel supports
71 * this and that we're running in a configuration that permits it.
73 #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed)
76 * kvm_gsi_routing_enabled:
78 * Returns: true if GSI routing is enabled (ie the kernel supports
79 * it and we're running in a configuration that permits it).
81 #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed)
84 #define kvm_enabled() (0)
85 #define kvm_irqchip_in_kernel() (false)
86 #define kvm_async_interrupts_enabled() (false)
87 #define kvm_irqfds_enabled() (false)
88 #define kvm_msi_via_irqfd_enabled() (false)
89 #define kvm_gsi_routing_allowed() (false)
93 struct kvm_lapic_state;
95 typedef struct KVMCapabilityInfo {
100 #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
101 #define KVM_CAP_LAST_INFO { NULL, 0 }
104 typedef struct KVMState KVMState;
105 extern KVMState *kvm_state;
111 int kvm_has_sync_mmu(void);
112 int kvm_has_vcpu_events(void);
113 int kvm_has_robust_singlestep(void);
114 int kvm_has_debugregs(void);
115 int kvm_has_xsave(void);
116 int kvm_has_xcrs(void);
117 int kvm_has_pit_state2(void);
118 int kvm_has_many_ioeventfds(void);
119 int kvm_has_gsi_routing(void);
120 int kvm_has_intx_set_mask(void);
123 int kvm_init_vcpu(CPUArchState *env);
125 int kvm_cpu_exec(CPUArchState *env);
127 #if !defined(CONFIG_USER_ONLY)
128 void *kvm_vmalloc(ram_addr_t size);
129 void *kvm_arch_vmalloc(ram_addr_t size);
130 void kvm_setup_guest_memory(void *start, size_t size);
132 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
133 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
134 void kvm_flush_coalesced_mmio_buffer(void);
137 int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
138 target_ulong len, int type);
139 int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
140 target_ulong len, int type);
141 void kvm_remove_all_breakpoints(CPUArchState *current_env);
142 int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap);
144 int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset);
147 int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
148 int kvm_on_sigbus(int code, void *addr);
152 int kvm_ioctl(KVMState *s, int type, ...);
154 int kvm_vm_ioctl(KVMState *s, int type, ...);
156 int kvm_vcpu_ioctl(CPUArchState *env, int type, ...);
158 /* Arch specific hooks */
160 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
162 void kvm_arch_pre_run(CPUArchState *env, struct kvm_run *run);
163 void kvm_arch_post_run(CPUArchState *env, struct kvm_run *run);
165 int kvm_arch_handle_exit(CPUArchState *env, struct kvm_run *run);
167 int kvm_arch_process_async_events(CPUArchState *env);
169 int kvm_arch_get_registers(CPUArchState *env);
171 /* state subset only touched by the VCPU itself during runtime */
172 #define KVM_PUT_RUNTIME_STATE 1
173 /* state subset modified during VCPU reset */
174 #define KVM_PUT_RESET_STATE 2
175 /* full state set, modified during initialization or on vmload */
176 #define KVM_PUT_FULL_STATE 3
178 int kvm_arch_put_registers(CPUArchState *env, int level);
180 int kvm_arch_init(KVMState *s);
182 int kvm_arch_init_vcpu(CPUArchState *env);
184 void kvm_arch_reset_vcpu(CPUArchState *env);
186 int kvm_arch_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
187 int kvm_arch_on_sigbus(int code, void *addr);
189 void kvm_arch_init_irq_routing(KVMState *s);
191 int kvm_set_irq(KVMState *s, int irq, int level);
192 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
194 void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin);
196 void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
197 void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
199 struct kvm_guest_debug;
200 struct kvm_debug_exit_arch;
202 struct kvm_sw_breakpoint {
204 target_ulong saved_insn;
206 QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
209 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
211 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env,
214 int kvm_sw_breakpoints_active(CPUArchState *env);
216 int kvm_arch_insert_sw_breakpoint(CPUArchState *current_env,
217 struct kvm_sw_breakpoint *bp);
218 int kvm_arch_remove_sw_breakpoint(CPUArchState *current_env,
219 struct kvm_sw_breakpoint *bp);
220 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
221 target_ulong len, int type);
222 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
223 target_ulong len, int type);
224 void kvm_arch_remove_all_hw_breakpoints(void);
226 void kvm_arch_update_guest_debug(CPUArchState *env, struct kvm_guest_debug *dbg);
228 bool kvm_arch_stop_on_emulation_error(CPUArchState *env);
230 int kvm_check_extension(KVMState *s, unsigned int extension);
232 uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
233 uint32_t index, int reg);
234 void kvm_cpu_synchronize_state(CPUArchState *env);
235 void kvm_cpu_synchronize_post_reset(CPUArchState *env);
236 void kvm_cpu_synchronize_post_init(CPUArchState *env);
238 /* generic hooks - to be moved/refactored once there are more users */
240 static inline void cpu_synchronize_state(CPUArchState *env)
243 kvm_cpu_synchronize_state(env);
247 static inline void cpu_synchronize_post_reset(CPUArchState *env)
250 kvm_cpu_synchronize_post_reset(env);
254 static inline void cpu_synchronize_post_init(CPUArchState *env)
257 kvm_cpu_synchronize_post_init(env);
262 #if !defined(CONFIG_USER_ONLY)
263 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
264 target_phys_addr_t *phys_addr);
268 int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign,
271 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
273 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg);
274 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg);
275 void kvm_irqchip_release_virq(KVMState *s, int virq);
277 int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);
278 int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);