4 * Copyright IBM, Corp. 2008
7 * Anthony Liguori <aliguori@us.ibm.com>
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"
23 #include <linux/kvm.h>
24 #include <linux/kvm_para.h>
26 /* These constants must never be used at runtime if kvm_enabled() is false.
27 * They exist so we don't need #ifdefs around KVM-specific code that already
28 * checks kvm_enabled() properly.
30 #define KVM_CPUID_SIGNATURE 0
31 #define KVM_CPUID_FEATURES 0
32 #define KVM_FEATURE_CLOCKSOURCE 0
33 #define KVM_FEATURE_NOP_IO_DELAY 0
34 #define KVM_FEATURE_MMU_OP 0
35 #define KVM_FEATURE_CLOCKSOURCE2 0
36 #define KVM_FEATURE_ASYNC_PF 0
37 #define KVM_FEATURE_STEAL_TIME 0
38 #define KVM_FEATURE_PV_EOI 0
39 #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 0
42 extern bool kvm_allowed;
43 extern bool kvm_kernel_irqchip;
44 extern bool kvm_async_interrupts_allowed;
45 extern bool kvm_halt_in_kernel_allowed;
46 extern bool kvm_irqfds_allowed;
47 extern bool kvm_msi_via_irqfd_allowed;
48 extern bool kvm_gsi_routing_allowed;
49 extern bool kvm_readonly_mem_allowed;
51 #if defined CONFIG_KVM || !defined NEED_CPU_H
52 #define kvm_enabled() (kvm_allowed)
54 * kvm_irqchip_in_kernel:
56 * Returns: true if the user asked us to create an in-kernel
57 * irqchip via the "kernel_irqchip=on" machine option.
58 * What this actually means is architecture and machine model
59 * specific: on PC, for instance, it means that the LAPIC,
60 * IOAPIC and PIT are all in kernel. This function should never
61 * be used from generic target-independent code: use one of the
62 * following functions or some other specific check instead.
64 #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip)
67 * kvm_async_interrupts_enabled:
69 * Returns: true if we can deliver interrupts to KVM
70 * asynchronously (ie by ioctl from any thread at any time)
71 * rather than having to do interrupt delivery synchronously
72 * (where the vcpu must be stopped at a suitable point first).
74 #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed)
79 * Returns: true if halted cpus should still get a KVM_RUN ioctl to run
80 * inside of kernel space. This only works if MP state is implemented.
82 #define kvm_halt_in_kernel() (kvm_halt_in_kernel_allowed)
87 * Returns: true if we can use irqfds to inject interrupts into
88 * a KVM CPU (ie the kernel supports irqfds and we are running
89 * with a configuration where it is meaningful to use them).
91 #define kvm_irqfds_enabled() (kvm_irqfds_allowed)
94 * kvm_msi_via_irqfd_enabled:
96 * Returns: true if we can route a PCI MSI (Message Signaled Interrupt)
97 * to a KVM CPU via an irqfd. This requires that the kernel supports
98 * this and that we're running in a configuration that permits it.
100 #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed)
103 * kvm_gsi_routing_enabled:
105 * Returns: true if GSI routing is enabled (ie the kernel supports
106 * it and we're running in a configuration that permits it).
108 #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed)
111 * kvm_readonly_mem_enabled:
113 * Returns: true if KVM readonly memory is enabled (ie the kernel
114 * supports it and we're running in a configuration that permits it).
116 #define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed)
119 #define kvm_enabled() (0)
120 #define kvm_irqchip_in_kernel() (false)
121 #define kvm_async_interrupts_enabled() (false)
122 #define kvm_halt_in_kernel() (false)
123 #define kvm_irqfds_enabled() (false)
124 #define kvm_msi_via_irqfd_enabled() (false)
125 #define kvm_gsi_routing_allowed() (false)
126 #define kvm_readonly_mem_enabled() (false)
130 struct kvm_lapic_state;
132 typedef struct KVMCapabilityInfo {
137 #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
138 #define KVM_CAP_LAST_INFO { NULL, 0 }
141 typedef struct KVMState KVMState;
142 extern KVMState *kvm_state;
148 int kvm_has_sync_mmu(void);
149 int kvm_has_vcpu_events(void);
150 int kvm_has_robust_singlestep(void);
151 int kvm_has_debugregs(void);
152 int kvm_has_xsave(void);
153 int kvm_has_xcrs(void);
154 int kvm_has_pit_state2(void);
155 int kvm_has_many_ioeventfds(void);
156 int kvm_has_gsi_routing(void);
157 int kvm_has_intx_set_mask(void);
159 int kvm_init_vcpu(CPUState *cpu);
160 int kvm_cpu_exec(CPUState *cpu);
164 void kvm_setup_guest_memory(void *start, size_t size);
165 void kvm_flush_coalesced_mmio_buffer(void);
167 int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
168 target_ulong len, int type);
169 int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
170 target_ulong len, int type);
171 void kvm_remove_all_breakpoints(CPUState *cpu);
172 int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap);
174 int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset);
177 int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
178 int kvm_on_sigbus(int code, void *addr);
182 int kvm_ioctl(KVMState *s, int type, ...);
184 int kvm_vm_ioctl(KVMState *s, int type, ...);
186 int kvm_vcpu_ioctl(CPUState *cpu, int type, ...);
188 /* Arch specific hooks */
190 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
192 void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run);
193 void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run);
195 int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run);
197 int kvm_arch_process_async_events(CPUState *cpu);
199 int kvm_arch_get_registers(CPUState *cpu);
201 /* state subset only touched by the VCPU itself during runtime */
202 #define KVM_PUT_RUNTIME_STATE 1
203 /* state subset modified during VCPU reset */
204 #define KVM_PUT_RESET_STATE 2
205 /* full state set, modified during initialization or on vmload */
206 #define KVM_PUT_FULL_STATE 3
208 int kvm_arch_put_registers(CPUState *cpu, int level);
210 int kvm_arch_init(KVMState *s);
212 int kvm_arch_init_vcpu(CPUState *cpu);
214 /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */
215 unsigned long kvm_arch_vcpu_id(CPUState *cpu);
217 void kvm_arch_reset_vcpu(CPUState *cpu);
219 int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
220 int kvm_arch_on_sigbus(int code, void *addr);
222 void kvm_arch_init_irq_routing(KVMState *s);
224 int kvm_set_irq(KVMState *s, int irq, int level);
225 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
227 void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin);
228 void kvm_irqchip_commit_routes(KVMState *s);
230 void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
231 void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
233 struct kvm_guest_debug;
234 struct kvm_debug_exit_arch;
236 struct kvm_sw_breakpoint {
238 target_ulong saved_insn;
240 QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
243 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
245 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu,
248 int kvm_sw_breakpoints_active(CPUState *cpu);
250 int kvm_arch_insert_sw_breakpoint(CPUState *cpu,
251 struct kvm_sw_breakpoint *bp);
252 int kvm_arch_remove_sw_breakpoint(CPUState *cpu,
253 struct kvm_sw_breakpoint *bp);
254 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
255 target_ulong len, int type);
256 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
257 target_ulong len, int type);
258 void kvm_arch_remove_all_hw_breakpoints(void);
260 void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg);
262 bool kvm_arch_stop_on_emulation_error(CPUState *cpu);
264 int kvm_check_extension(KVMState *s, unsigned int extension);
266 uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
267 uint32_t index, int reg);
268 void kvm_cpu_synchronize_state(CPUState *cpu);
270 /* generic hooks - to be moved/refactored once there are more users */
272 static inline void cpu_synchronize_state(CPUState *cpu)
275 kvm_cpu_synchronize_state(cpu);
279 #if !defined(CONFIG_USER_ONLY)
280 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
284 #endif /* NEED_CPU_H */
286 void kvm_cpu_synchronize_post_reset(CPUState *cpu);
287 void kvm_cpu_synchronize_post_init(CPUState *cpu);
289 static inline void cpu_synchronize_post_reset(CPUState *cpu)
292 kvm_cpu_synchronize_post_reset(cpu);
296 static inline void cpu_synchronize_post_init(CPUState *cpu)
299 kvm_cpu_synchronize_post_init(cpu);
303 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg);
304 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg);
305 void kvm_irqchip_release_virq(KVMState *s, int virq);
307 int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n,
308 EventNotifier *rn, int virq);
309 int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);
310 void kvm_pc_gsi_handler(void *opaque, int n, int level);
311 void kvm_pc_setup_irq_routing(bool pci_enabled);
312 void kvm_init_irq_routing(KVMState *s);