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05330448 AL |
1 | /* |
2 | * QEMU KVM support | |
3 | * | |
4 | * Copyright IBM, Corp. 2008 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
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. | |
11 | * | |
12 | */ | |
13 | ||
14 | #ifndef QEMU_KVM_H | |
15 | #define QEMU_KVM_H | |
16 | ||
ca821806 | 17 | #include <errno.h> |
1c14f162 | 18 | #include "config-host.h" |
1de7afc9 | 19 | #include "qemu/queue.h" |
504134d2 | 20 | #include "qom/cpu.h" |
05330448 | 21 | |
ca821806 MT |
22 | #ifdef CONFIG_KVM |
23 | #include <linux/kvm.h> | |
bc74b7db | 24 | #include <linux/kvm_para.h> |
9ca58923 EH |
25 | #else |
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. | |
29 | */ | |
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 | |
d61a23ba | 39 | #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 0 |
ca821806 | 40 | #endif |
05330448 | 41 | |
d5286af5 | 42 | extern bool kvm_allowed; |
3d4b2649 | 43 | extern bool kvm_kernel_irqchip; |
7ae26bd4 | 44 | extern bool kvm_async_interrupts_allowed; |
215e79c0 | 45 | extern bool kvm_halt_in_kernel_allowed; |
cc7e0ddf | 46 | extern bool kvm_irqfds_allowed; |
614e41bc | 47 | extern bool kvm_msi_via_irqfd_allowed; |
f3e1bed8 | 48 | extern bool kvm_gsi_routing_allowed; |
76fe21de | 49 | extern bool kvm_gsi_direct_mapping; |
df9c8b75 | 50 | extern bool kvm_readonly_mem_allowed; |
98c8573e PB |
51 | |
52 | #if defined CONFIG_KVM || !defined NEED_CPU_H | |
3d4b2649 | 53 | #define kvm_enabled() (kvm_allowed) |
96fda35a PM |
54 | /** |
55 | * kvm_irqchip_in_kernel: | |
56 | * | |
57 | * Returns: true if the user asked us to create an in-kernel | |
58 | * irqchip via the "kernel_irqchip=on" machine option. | |
59 | * What this actually means is architecture and machine model | |
60 | * specific: on PC, for instance, it means that the LAPIC, | |
61 | * IOAPIC and PIT are all in kernel. This function should never | |
62 | * be used from generic target-independent code: use one of the | |
63 | * following functions or some other specific check instead. | |
64 | */ | |
3d4b2649 | 65 | #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip) |
7ae26bd4 PM |
66 | |
67 | /** | |
68 | * kvm_async_interrupts_enabled: | |
69 | * | |
70 | * Returns: true if we can deliver interrupts to KVM | |
71 | * asynchronously (ie by ioctl from any thread at any time) | |
72 | * rather than having to do interrupt delivery synchronously | |
73 | * (where the vcpu must be stopped at a suitable point first). | |
74 | */ | |
75 | #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed) | |
76 | ||
215e79c0 AG |
77 | /** |
78 | * kvm_halt_in_kernel | |
79 | * | |
80 | * Returns: true if halted cpus should still get a KVM_RUN ioctl to run | |
81 | * inside of kernel space. This only works if MP state is implemented. | |
82 | */ | |
83 | #define kvm_halt_in_kernel() (kvm_halt_in_kernel_allowed) | |
84 | ||
cc7e0ddf PM |
85 | /** |
86 | * kvm_irqfds_enabled: | |
87 | * | |
88 | * Returns: true if we can use irqfds to inject interrupts into | |
89 | * a KVM CPU (ie the kernel supports irqfds and we are running | |
90 | * with a configuration where it is meaningful to use them). | |
91 | */ | |
92 | #define kvm_irqfds_enabled() (kvm_irqfds_allowed) | |
93 | ||
614e41bc PM |
94 | /** |
95 | * kvm_msi_via_irqfd_enabled: | |
96 | * | |
97 | * Returns: true if we can route a PCI MSI (Message Signaled Interrupt) | |
98 | * to a KVM CPU via an irqfd. This requires that the kernel supports | |
99 | * this and that we're running in a configuration that permits it. | |
100 | */ | |
101 | #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed) | |
102 | ||
f3e1bed8 PM |
103 | /** |
104 | * kvm_gsi_routing_enabled: | |
105 | * | |
106 | * Returns: true if GSI routing is enabled (ie the kernel supports | |
107 | * it and we're running in a configuration that permits it). | |
108 | */ | |
109 | #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) | |
110 | ||
76fe21de AK |
111 | /** |
112 | * kvm_gsi_direct_mapping: | |
113 | * | |
114 | * Returns: true if GSI direct mapping is enabled. | |
115 | */ | |
116 | #define kvm_gsi_direct_mapping() (kvm_gsi_direct_mapping) | |
117 | ||
df9c8b75 JJ |
118 | /** |
119 | * kvm_readonly_mem_enabled: | |
120 | * | |
121 | * Returns: true if KVM readonly memory is enabled (ie the kernel | |
122 | * supports it and we're running in a configuration that permits it). | |
123 | */ | |
124 | #define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed) | |
125 | ||
05330448 | 126 | #else |
3d4b2649 JK |
127 | #define kvm_enabled() (0) |
128 | #define kvm_irqchip_in_kernel() (false) | |
7ae26bd4 | 129 | #define kvm_async_interrupts_enabled() (false) |
215e79c0 | 130 | #define kvm_halt_in_kernel() (false) |
cc7e0ddf | 131 | #define kvm_irqfds_enabled() (false) |
614e41bc | 132 | #define kvm_msi_via_irqfd_enabled() (false) |
f3e1bed8 | 133 | #define kvm_gsi_routing_allowed() (false) |
76fe21de | 134 | #define kvm_gsi_direct_mapping() (false) |
df9c8b75 | 135 | #define kvm_readonly_mem_enabled() (false) |
05330448 AL |
136 | #endif |
137 | ||
138 | struct kvm_run; | |
680c1c6f | 139 | struct kvm_lapic_state; |
05330448 | 140 | |
94a8d39a JK |
141 | typedef struct KVMCapabilityInfo { |
142 | const char *name; | |
143 | int value; | |
144 | } KVMCapabilityInfo; | |
145 | ||
146 | #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP } | |
147 | #define KVM_CAP_LAST_INFO { NULL, 0 } | |
148 | ||
92b4e489 JK |
149 | struct KVMState; |
150 | typedef struct KVMState KVMState; | |
151 | extern KVMState *kvm_state; | |
152 | ||
05330448 AL |
153 | /* external API */ |
154 | ||
cad1e282 | 155 | int kvm_init(void); |
05330448 | 156 | |
00a1555e PB |
157 | int kvm_has_sync_mmu(void); |
158 | int kvm_has_vcpu_events(void); | |
159 | int kvm_has_robust_singlestep(void); | |
ff44f1a3 | 160 | int kvm_has_debugregs(void); |
f1665b21 SY |
161 | int kvm_has_xsave(void); |
162 | int kvm_has_xcrs(void); | |
8a7c7393 | 163 | int kvm_has_pit_state2(void); |
d2f2b8a7 | 164 | int kvm_has_many_ioeventfds(void); |
84b058d7 | 165 | int kvm_has_gsi_routing(void); |
3ab73842 | 166 | int kvm_has_intx_set_mask(void); |
00a1555e | 167 | |
504134d2 | 168 | int kvm_init_vcpu(CPUState *cpu); |
1458c363 | 169 | int kvm_cpu_exec(CPUState *cpu); |
05330448 | 170 | |
504134d2 | 171 | #ifdef NEED_CPU_H |
05330448 | 172 | |
c4cfef5e | 173 | void kvm_setup_guest_memory(void *start, size_t size); |
62a2744c | 174 | void kvm_flush_coalesced_mmio_buffer(void); |
f65ed4c1 | 175 | |
62278814 | 176 | int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 | 177 | target_ulong len, int type); |
62278814 | 178 | int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr, |
e22a25c9 | 179 | target_ulong len, int type); |
1d5791f4 | 180 | void kvm_remove_all_breakpoints(CPUState *cpu); |
38e478ec | 181 | int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap); |
20c20526 | 182 | #ifndef _WIN32 |
491d6e80 | 183 | int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset); |
20c20526 | 184 | #endif |
e22a25c9 | 185 | |
290adf38 | 186 | int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); |
a1b87fe0 JK |
187 | int kvm_on_sigbus(int code, void *addr); |
188 | ||
05330448 AL |
189 | /* internal API */ |
190 | ||
984b5181 | 191 | int kvm_ioctl(KVMState *s, int type, ...); |
05330448 | 192 | |
984b5181 | 193 | int kvm_vm_ioctl(KVMState *s, int type, ...); |
05330448 | 194 | |
1bc22652 | 195 | int kvm_vcpu_ioctl(CPUState *cpu, int type, ...); |
05330448 AL |
196 | |
197 | /* Arch specific hooks */ | |
198 | ||
94a8d39a JK |
199 | extern const KVMCapabilityInfo kvm_arch_required_capabilities[]; |
200 | ||
20d695a9 AF |
201 | void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run); |
202 | void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run); | |
05330448 | 203 | |
20d695a9 | 204 | int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run); |
05330448 | 205 | |
20d695a9 | 206 | int kvm_arch_process_async_events(CPUState *cpu); |
0af691d7 | 207 | |
20d695a9 | 208 | int kvm_arch_get_registers(CPUState *cpu); |
05330448 | 209 | |
ea375f9a JK |
210 | /* state subset only touched by the VCPU itself during runtime */ |
211 | #define KVM_PUT_RUNTIME_STATE 1 | |
212 | /* state subset modified during VCPU reset */ | |
213 | #define KVM_PUT_RESET_STATE 2 | |
214 | /* full state set, modified during initialization or on vmload */ | |
215 | #define KVM_PUT_FULL_STATE 3 | |
216 | ||
20d695a9 | 217 | int kvm_arch_put_registers(CPUState *cpu, int level); |
05330448 | 218 | |
cad1e282 | 219 | int kvm_arch_init(KVMState *s); |
05330448 | 220 | |
20d695a9 | 221 | int kvm_arch_init_vcpu(CPUState *cpu); |
05330448 | 222 | |
b164e48e EH |
223 | /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */ |
224 | unsigned long kvm_arch_vcpu_id(CPUState *cpu); | |
225 | ||
20d695a9 | 226 | void kvm_arch_reset_vcpu(CPUState *cpu); |
caa5af0f | 227 | |
20d695a9 | 228 | int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); |
a1b87fe0 | 229 | int kvm_arch_on_sigbus(int code, void *addr); |
c0532a76 | 230 | |
84b058d7 JK |
231 | void kvm_arch_init_irq_routing(KVMState *s); |
232 | ||
3889c3fa | 233 | int kvm_set_irq(KVMState *s, int irq, int level); |
04fa27f5 | 234 | int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg); |
84b058d7 | 235 | |
1df186df | 236 | void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin); |
cb925cf9 | 237 | void kvm_irqchip_commit_routes(KVMState *s); |
84b058d7 | 238 | |
680c1c6f JK |
239 | void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); |
240 | void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); | |
241 | ||
e22a25c9 AL |
242 | struct kvm_guest_debug; |
243 | struct kvm_debug_exit_arch; | |
244 | ||
245 | struct kvm_sw_breakpoint { | |
246 | target_ulong pc; | |
247 | target_ulong saved_insn; | |
248 | int use_count; | |
72cf2d4f | 249 | QTAILQ_ENTRY(kvm_sw_breakpoint) entry; |
e22a25c9 AL |
250 | }; |
251 | ||
72cf2d4f | 252 | QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint); |
e22a25c9 | 253 | |
a60f24b5 | 254 | struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, |
e22a25c9 AL |
255 | target_ulong pc); |
256 | ||
a60f24b5 | 257 | int kvm_sw_breakpoints_active(CPUState *cpu); |
e22a25c9 | 258 | |
80b7cd73 | 259 | int kvm_arch_insert_sw_breakpoint(CPUState *cpu, |
e22a25c9 | 260 | struct kvm_sw_breakpoint *bp); |
80b7cd73 | 261 | int kvm_arch_remove_sw_breakpoint(CPUState *cpu, |
e22a25c9 AL |
262 | struct kvm_sw_breakpoint *bp); |
263 | int kvm_arch_insert_hw_breakpoint(target_ulong addr, | |
264 | target_ulong len, int type); | |
265 | int kvm_arch_remove_hw_breakpoint(target_ulong addr, | |
266 | target_ulong len, int type); | |
267 | void kvm_arch_remove_all_hw_breakpoints(void); | |
268 | ||
20d695a9 | 269 | void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg); |
e22a25c9 | 270 | |
20d695a9 | 271 | bool kvm_arch_stop_on_emulation_error(CPUState *cpu); |
4513d923 | 272 | |
ad7b8b33 AL |
273 | int kvm_check_extension(KVMState *s, unsigned int extension); |
274 | ||
ba9bc59e | 275 | uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function, |
c958a8bd | 276 | uint32_t index, int reg); |
e22a25c9 | 277 | |
13eed94e IM |
278 | #if !defined(CONFIG_USER_ONLY) |
279 | int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr, | |
280 | hwaddr *phys_addr); | |
281 | #endif | |
282 | ||
283 | #endif /* NEED_CPU_H */ | |
284 | ||
97577fd4 | 285 | void kvm_cpu_synchronize_state(CPUState *cpu); |
13eed94e IM |
286 | void kvm_cpu_synchronize_post_reset(CPUState *cpu); |
287 | void kvm_cpu_synchronize_post_init(CPUState *cpu); | |
288 | ||
97577fd4 JH |
289 | /* generic hooks - to be moved/refactored once there are more users */ |
290 | ||
291 | static inline void cpu_synchronize_state(CPUState *cpu) | |
292 | { | |
293 | if (kvm_enabled()) { | |
294 | kvm_cpu_synchronize_state(cpu); | |
295 | } | |
296 | } | |
297 | ||
3f24a58f | 298 | static inline void cpu_synchronize_post_reset(CPUState *cpu) |
ea375f9a JK |
299 | { |
300 | if (kvm_enabled()) { | |
3f24a58f | 301 | kvm_cpu_synchronize_post_reset(cpu); |
ea375f9a JK |
302 | } |
303 | } | |
304 | ||
3f24a58f | 305 | static inline void cpu_synchronize_post_init(CPUState *cpu) |
ea375f9a JK |
306 | { |
307 | if (kvm_enabled()) { | |
3f24a58f | 308 | kvm_cpu_synchronize_post_init(cpu); |
ea375f9a JK |
309 | } |
310 | } | |
ca821806 | 311 | |
92b4e489 | 312 | int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg); |
cc57407e | 313 | int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg); |
1e2aa8be | 314 | void kvm_irqchip_release_virq(KVMState *s, int virq); |
39853bbc | 315 | |
ca916d37 VM |
316 | int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, |
317 | EventNotifier *rn, int virq); | |
b131c74a | 318 | int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); |
d8ee0384 JB |
319 | void kvm_pc_gsi_handler(void *opaque, int n, int level); |
320 | void kvm_pc_setup_irq_routing(bool pci_enabled); | |
7b774593 | 321 | void kvm_init_irq_routing(KVMState *s); |
05330448 | 322 | #endif |