19c17d615SPaolo Bonzini /* 29c17d615SPaolo Bonzini * QEMU KVM support 39c17d615SPaolo Bonzini * 49c17d615SPaolo Bonzini * Copyright IBM, Corp. 2008 59c17d615SPaolo Bonzini * 69c17d615SPaolo Bonzini * Authors: 79c17d615SPaolo Bonzini * Anthony Liguori <aliguori@us.ibm.com> 89c17d615SPaolo Bonzini * 99c17d615SPaolo Bonzini * This work is licensed under the terms of the GNU GPL, version 2 or later. 109c17d615SPaolo Bonzini * See the COPYING file in the top-level directory. 119c17d615SPaolo Bonzini * 129c17d615SPaolo Bonzini */ 139c17d615SPaolo Bonzini 149c17d615SPaolo Bonzini #ifndef QEMU_KVM_H 159c17d615SPaolo Bonzini #define QEMU_KVM_H 169c17d615SPaolo Bonzini 179c17d615SPaolo Bonzini #include <errno.h> 189c17d615SPaolo Bonzini #include "config-host.h" 199c17d615SPaolo Bonzini #include "qemu/queue.h" 20504134d2SAndreas Färber #include "qom/cpu.h" 219c17d615SPaolo Bonzini 229c17d615SPaolo Bonzini #ifdef CONFIG_KVM 239c17d615SPaolo Bonzini #include <linux/kvm.h> 249c17d615SPaolo Bonzini #include <linux/kvm_para.h> 259ca58923SEduardo Habkost #else 269ca58923SEduardo Habkost /* These constants must never be used at runtime if kvm_enabled() is false. 279ca58923SEduardo Habkost * They exist so we don't need #ifdefs around KVM-specific code that already 289ca58923SEduardo Habkost * checks kvm_enabled() properly. 299ca58923SEduardo Habkost */ 309ca58923SEduardo Habkost #define KVM_CPUID_SIGNATURE 0 319ca58923SEduardo Habkost #define KVM_CPUID_FEATURES 0 329ca58923SEduardo Habkost #define KVM_FEATURE_CLOCKSOURCE 0 339ca58923SEduardo Habkost #define KVM_FEATURE_NOP_IO_DELAY 0 349ca58923SEduardo Habkost #define KVM_FEATURE_MMU_OP 0 359ca58923SEduardo Habkost #define KVM_FEATURE_CLOCKSOURCE2 0 369ca58923SEduardo Habkost #define KVM_FEATURE_ASYNC_PF 0 379ca58923SEduardo Habkost #define KVM_FEATURE_STEAL_TIME 0 389ca58923SEduardo Habkost #define KVM_FEATURE_PV_EOI 0 39d61a23baSEduardo Habkost #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 0 409c17d615SPaolo Bonzini #endif 419c17d615SPaolo Bonzini 42d5286af5Sliguang extern bool kvm_allowed; 439c17d615SPaolo Bonzini extern bool kvm_kernel_irqchip; 449c17d615SPaolo Bonzini extern bool kvm_async_interrupts_allowed; 459c17d615SPaolo Bonzini extern bool kvm_irqfds_allowed; 469c17d615SPaolo Bonzini extern bool kvm_msi_via_irqfd_allowed; 479c17d615SPaolo Bonzini extern bool kvm_gsi_routing_allowed; 48df9c8b75SJordan Justen extern bool kvm_readonly_mem_allowed; 499c17d615SPaolo Bonzini 509c17d615SPaolo Bonzini #if defined CONFIG_KVM || !defined NEED_CPU_H 519c17d615SPaolo Bonzini #define kvm_enabled() (kvm_allowed) 529c17d615SPaolo Bonzini /** 539c17d615SPaolo Bonzini * kvm_irqchip_in_kernel: 549c17d615SPaolo Bonzini * 559c17d615SPaolo Bonzini * Returns: true if the user asked us to create an in-kernel 569c17d615SPaolo Bonzini * irqchip via the "kernel_irqchip=on" machine option. 579c17d615SPaolo Bonzini * What this actually means is architecture and machine model 589c17d615SPaolo Bonzini * specific: on PC, for instance, it means that the LAPIC, 599c17d615SPaolo Bonzini * IOAPIC and PIT are all in kernel. This function should never 609c17d615SPaolo Bonzini * be used from generic target-independent code: use one of the 619c17d615SPaolo Bonzini * following functions or some other specific check instead. 629c17d615SPaolo Bonzini */ 639c17d615SPaolo Bonzini #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip) 649c17d615SPaolo Bonzini 659c17d615SPaolo Bonzini /** 669c17d615SPaolo Bonzini * kvm_async_interrupts_enabled: 679c17d615SPaolo Bonzini * 689c17d615SPaolo Bonzini * Returns: true if we can deliver interrupts to KVM 699c17d615SPaolo Bonzini * asynchronously (ie by ioctl from any thread at any time) 709c17d615SPaolo Bonzini * rather than having to do interrupt delivery synchronously 719c17d615SPaolo Bonzini * (where the vcpu must be stopped at a suitable point first). 729c17d615SPaolo Bonzini */ 739c17d615SPaolo Bonzini #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed) 749c17d615SPaolo Bonzini 759c17d615SPaolo Bonzini /** 769c17d615SPaolo Bonzini * kvm_irqfds_enabled: 779c17d615SPaolo Bonzini * 789c17d615SPaolo Bonzini * Returns: true if we can use irqfds to inject interrupts into 799c17d615SPaolo Bonzini * a KVM CPU (ie the kernel supports irqfds and we are running 809c17d615SPaolo Bonzini * with a configuration where it is meaningful to use them). 819c17d615SPaolo Bonzini */ 829c17d615SPaolo Bonzini #define kvm_irqfds_enabled() (kvm_irqfds_allowed) 839c17d615SPaolo Bonzini 849c17d615SPaolo Bonzini /** 859c17d615SPaolo Bonzini * kvm_msi_via_irqfd_enabled: 869c17d615SPaolo Bonzini * 879c17d615SPaolo Bonzini * Returns: true if we can route a PCI MSI (Message Signaled Interrupt) 889c17d615SPaolo Bonzini * to a KVM CPU via an irqfd. This requires that the kernel supports 899c17d615SPaolo Bonzini * this and that we're running in a configuration that permits it. 909c17d615SPaolo Bonzini */ 919c17d615SPaolo Bonzini #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed) 929c17d615SPaolo Bonzini 939c17d615SPaolo Bonzini /** 949c17d615SPaolo Bonzini * kvm_gsi_routing_enabled: 959c17d615SPaolo Bonzini * 969c17d615SPaolo Bonzini * Returns: true if GSI routing is enabled (ie the kernel supports 979c17d615SPaolo Bonzini * it and we're running in a configuration that permits it). 989c17d615SPaolo Bonzini */ 999c17d615SPaolo Bonzini #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) 1009c17d615SPaolo Bonzini 101df9c8b75SJordan Justen /** 102df9c8b75SJordan Justen * kvm_readonly_mem_enabled: 103df9c8b75SJordan Justen * 104df9c8b75SJordan Justen * Returns: true if KVM readonly memory is enabled (ie the kernel 105df9c8b75SJordan Justen * supports it and we're running in a configuration that permits it). 106df9c8b75SJordan Justen */ 107df9c8b75SJordan Justen #define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed) 108df9c8b75SJordan Justen 1099c17d615SPaolo Bonzini #else 1109c17d615SPaolo Bonzini #define kvm_enabled() (0) 1119c17d615SPaolo Bonzini #define kvm_irqchip_in_kernel() (false) 1129c17d615SPaolo Bonzini #define kvm_async_interrupts_enabled() (false) 1139c17d615SPaolo Bonzini #define kvm_irqfds_enabled() (false) 1149c17d615SPaolo Bonzini #define kvm_msi_via_irqfd_enabled() (false) 1159c17d615SPaolo Bonzini #define kvm_gsi_routing_allowed() (false) 116df9c8b75SJordan Justen #define kvm_readonly_mem_enabled() (false) 1179c17d615SPaolo Bonzini #endif 1189c17d615SPaolo Bonzini 1199c17d615SPaolo Bonzini struct kvm_run; 1209c17d615SPaolo Bonzini struct kvm_lapic_state; 1219c17d615SPaolo Bonzini 1229c17d615SPaolo Bonzini typedef struct KVMCapabilityInfo { 1239c17d615SPaolo Bonzini const char *name; 1249c17d615SPaolo Bonzini int value; 1259c17d615SPaolo Bonzini } KVMCapabilityInfo; 1269c17d615SPaolo Bonzini 1279c17d615SPaolo Bonzini #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP } 1289c17d615SPaolo Bonzini #define KVM_CAP_LAST_INFO { NULL, 0 } 1299c17d615SPaolo Bonzini 1309c17d615SPaolo Bonzini struct KVMState; 1319c17d615SPaolo Bonzini typedef struct KVMState KVMState; 1329c17d615SPaolo Bonzini extern KVMState *kvm_state; 1339c17d615SPaolo Bonzini 1349c17d615SPaolo Bonzini /* external API */ 1359c17d615SPaolo Bonzini 1369c17d615SPaolo Bonzini int kvm_init(void); 1379c17d615SPaolo Bonzini 1389c17d615SPaolo Bonzini int kvm_has_sync_mmu(void); 1399c17d615SPaolo Bonzini int kvm_has_vcpu_events(void); 1409c17d615SPaolo Bonzini int kvm_has_robust_singlestep(void); 1419c17d615SPaolo Bonzini int kvm_has_debugregs(void); 1429c17d615SPaolo Bonzini int kvm_has_xsave(void); 1439c17d615SPaolo Bonzini int kvm_has_xcrs(void); 1449c17d615SPaolo Bonzini int kvm_has_pit_state2(void); 1459c17d615SPaolo Bonzini int kvm_has_many_ioeventfds(void); 1469c17d615SPaolo Bonzini int kvm_has_gsi_routing(void); 1479c17d615SPaolo Bonzini int kvm_has_intx_set_mask(void); 1489c17d615SPaolo Bonzini 149504134d2SAndreas Färber int kvm_init_vcpu(CPUState *cpu); 1509c17d615SPaolo Bonzini 151504134d2SAndreas Färber #ifdef NEED_CPU_H 1529c17d615SPaolo Bonzini int kvm_cpu_exec(CPUArchState *env); 1539c17d615SPaolo Bonzini 1549c17d615SPaolo Bonzini #if !defined(CONFIG_USER_ONLY) 1556eebf958SPaolo Bonzini void *kvm_ram_alloc(ram_addr_t size); 1566eebf958SPaolo Bonzini void *kvm_arch_ram_alloc(ram_addr_t size); 1579c17d615SPaolo Bonzini #endif 1589c17d615SPaolo Bonzini 159c4cfef5eSIgor Mammedov void kvm_setup_guest_memory(void *start, size_t size); 160c4cfef5eSIgor Mammedov void kvm_flush_coalesced_mmio_buffer(void); 161c4cfef5eSIgor Mammedov 1629c17d615SPaolo Bonzini int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr, 1639c17d615SPaolo Bonzini target_ulong len, int type); 1649c17d615SPaolo Bonzini int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr, 1659c17d615SPaolo Bonzini target_ulong len, int type); 1669c17d615SPaolo Bonzini void kvm_remove_all_breakpoints(CPUArchState *current_env); 1679c17d615SPaolo Bonzini int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap); 1689c17d615SPaolo Bonzini #ifndef _WIN32 169*491d6e80SAndreas Färber int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset); 1709c17d615SPaolo Bonzini #endif 1719c17d615SPaolo Bonzini 172290adf38SAndreas Färber int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); 1739c17d615SPaolo Bonzini int kvm_on_sigbus(int code, void *addr); 1749c17d615SPaolo Bonzini 1759c17d615SPaolo Bonzini /* internal API */ 1769c17d615SPaolo Bonzini 1779c17d615SPaolo Bonzini int kvm_ioctl(KVMState *s, int type, ...); 1789c17d615SPaolo Bonzini 1799c17d615SPaolo Bonzini int kvm_vm_ioctl(KVMState *s, int type, ...); 1809c17d615SPaolo Bonzini 181501a7ce7SAndreas Färber int kvm_vcpu_ioctl(CPUState *cpu, int type, ...); 1829c17d615SPaolo Bonzini 1839c17d615SPaolo Bonzini /* Arch specific hooks */ 1849c17d615SPaolo Bonzini 1859c17d615SPaolo Bonzini extern const KVMCapabilityInfo kvm_arch_required_capabilities[]; 1869c17d615SPaolo Bonzini 187501a7ce7SAndreas Färber void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run); 188501a7ce7SAndreas Färber void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run); 1899c17d615SPaolo Bonzini 190501a7ce7SAndreas Färber int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run); 1919c17d615SPaolo Bonzini 192501a7ce7SAndreas Färber int kvm_arch_process_async_events(CPUState *cpu); 1939c17d615SPaolo Bonzini 194501a7ce7SAndreas Färber int kvm_arch_get_registers(CPUState *cpu); 1959c17d615SPaolo Bonzini 1969c17d615SPaolo Bonzini /* state subset only touched by the VCPU itself during runtime */ 1979c17d615SPaolo Bonzini #define KVM_PUT_RUNTIME_STATE 1 1989c17d615SPaolo Bonzini /* state subset modified during VCPU reset */ 1999c17d615SPaolo Bonzini #define KVM_PUT_RESET_STATE 2 2009c17d615SPaolo Bonzini /* full state set, modified during initialization or on vmload */ 2019c17d615SPaolo Bonzini #define KVM_PUT_FULL_STATE 3 2029c17d615SPaolo Bonzini 203501a7ce7SAndreas Färber int kvm_arch_put_registers(CPUState *cpu, int level); 2049c17d615SPaolo Bonzini 2059c17d615SPaolo Bonzini int kvm_arch_init(KVMState *s); 2069c17d615SPaolo Bonzini 207501a7ce7SAndreas Färber int kvm_arch_init_vcpu(CPUState *cpu); 2089c17d615SPaolo Bonzini 209b164e48eSEduardo Habkost /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */ 210b164e48eSEduardo Habkost unsigned long kvm_arch_vcpu_id(CPUState *cpu); 211b164e48eSEduardo Habkost 212501a7ce7SAndreas Färber void kvm_arch_reset_vcpu(CPUState *cpu); 2139c17d615SPaolo Bonzini 214501a7ce7SAndreas Färber int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); 2159c17d615SPaolo Bonzini int kvm_arch_on_sigbus(int code, void *addr); 2169c17d615SPaolo Bonzini 2179c17d615SPaolo Bonzini void kvm_arch_init_irq_routing(KVMState *s); 2189c17d615SPaolo Bonzini 2199c17d615SPaolo Bonzini int kvm_set_irq(KVMState *s, int irq, int level); 2209c17d615SPaolo Bonzini int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg); 2219c17d615SPaolo Bonzini 2229c17d615SPaolo Bonzini void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin); 2239c17d615SPaolo Bonzini 2249c17d615SPaolo Bonzini void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); 2259c17d615SPaolo Bonzini void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); 2269c17d615SPaolo Bonzini 2279c17d615SPaolo Bonzini struct kvm_guest_debug; 2289c17d615SPaolo Bonzini struct kvm_debug_exit_arch; 2299c17d615SPaolo Bonzini 2309c17d615SPaolo Bonzini struct kvm_sw_breakpoint { 2319c17d615SPaolo Bonzini target_ulong pc; 2329c17d615SPaolo Bonzini target_ulong saved_insn; 2339c17d615SPaolo Bonzini int use_count; 2349c17d615SPaolo Bonzini QTAILQ_ENTRY(kvm_sw_breakpoint) entry; 2359c17d615SPaolo Bonzini }; 2369c17d615SPaolo Bonzini 2379c17d615SPaolo Bonzini QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint); 2389c17d615SPaolo Bonzini 239501a7ce7SAndreas Färber struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, 2409c17d615SPaolo Bonzini target_ulong pc); 2419c17d615SPaolo Bonzini 242501a7ce7SAndreas Färber int kvm_sw_breakpoints_active(CPUState *cpu); 2439c17d615SPaolo Bonzini 244501a7ce7SAndreas Färber int kvm_arch_insert_sw_breakpoint(CPUState *current_cpu, 2459c17d615SPaolo Bonzini struct kvm_sw_breakpoint *bp); 246501a7ce7SAndreas Färber int kvm_arch_remove_sw_breakpoint(CPUState *current_cpu, 2479c17d615SPaolo Bonzini struct kvm_sw_breakpoint *bp); 2489c17d615SPaolo Bonzini int kvm_arch_insert_hw_breakpoint(target_ulong addr, 2499c17d615SPaolo Bonzini target_ulong len, int type); 2509c17d615SPaolo Bonzini int kvm_arch_remove_hw_breakpoint(target_ulong addr, 2519c17d615SPaolo Bonzini target_ulong len, int type); 2529c17d615SPaolo Bonzini void kvm_arch_remove_all_hw_breakpoints(void); 2539c17d615SPaolo Bonzini 254501a7ce7SAndreas Färber void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg); 2559c17d615SPaolo Bonzini 256501a7ce7SAndreas Färber bool kvm_arch_stop_on_emulation_error(CPUState *cpu); 2579c17d615SPaolo Bonzini 2589c17d615SPaolo Bonzini int kvm_check_extension(KVMState *s, unsigned int extension); 2599c17d615SPaolo Bonzini 2609c17d615SPaolo Bonzini uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function, 2619c17d615SPaolo Bonzini uint32_t index, int reg); 262dd1750d7SAndreas Färber void kvm_cpu_synchronize_state(CPUState *cpu); 2639c17d615SPaolo Bonzini 2649c17d615SPaolo Bonzini /* generic hooks - to be moved/refactored once there are more users */ 2659c17d615SPaolo Bonzini 266cb446ecaSAndreas Färber static inline void cpu_synchronize_state(CPUState *cpu) 2679c17d615SPaolo Bonzini { 2689c17d615SPaolo Bonzini if (kvm_enabled()) { 269cb446ecaSAndreas Färber kvm_cpu_synchronize_state(cpu); 2709c17d615SPaolo Bonzini } 2719c17d615SPaolo Bonzini } 2729c17d615SPaolo Bonzini 27313eed94eSIgor Mammedov #if !defined(CONFIG_USER_ONLY) 27413eed94eSIgor Mammedov int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr, 27513eed94eSIgor Mammedov hwaddr *phys_addr); 27613eed94eSIgor Mammedov #endif 27713eed94eSIgor Mammedov 27813eed94eSIgor Mammedov #endif /* NEED_CPU_H */ 27913eed94eSIgor Mammedov 28013eed94eSIgor Mammedov void kvm_cpu_synchronize_post_reset(CPUState *cpu); 28113eed94eSIgor Mammedov void kvm_cpu_synchronize_post_init(CPUState *cpu); 28213eed94eSIgor Mammedov 2833f24a58fSIgor Mammedov static inline void cpu_synchronize_post_reset(CPUState *cpu) 2849c17d615SPaolo Bonzini { 2859c17d615SPaolo Bonzini if (kvm_enabled()) { 2863f24a58fSIgor Mammedov kvm_cpu_synchronize_post_reset(cpu); 2879c17d615SPaolo Bonzini } 2889c17d615SPaolo Bonzini } 2899c17d615SPaolo Bonzini 2903f24a58fSIgor Mammedov static inline void cpu_synchronize_post_init(CPUState *cpu) 2919c17d615SPaolo Bonzini { 2929c17d615SPaolo Bonzini if (kvm_enabled()) { 2933f24a58fSIgor Mammedov kvm_cpu_synchronize_post_init(cpu); 2949c17d615SPaolo Bonzini } 2959c17d615SPaolo Bonzini } 2969c17d615SPaolo Bonzini 2979c17d615SPaolo Bonzini int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg); 2989c17d615SPaolo Bonzini int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg); 2999c17d615SPaolo Bonzini void kvm_irqchip_release_virq(KVMState *s, int virq); 3009c17d615SPaolo Bonzini 3019c17d615SPaolo Bonzini int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); 3029c17d615SPaolo Bonzini int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); 3039c17d615SPaolo Bonzini void kvm_pc_gsi_handler(void *opaque, int n, int level); 3049c17d615SPaolo Bonzini void kvm_pc_setup_irq_routing(bool pci_enabled); 3059c17d615SPaolo Bonzini #endif 306