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" 20*504134d2SAndreas 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> 259c17d615SPaolo Bonzini #endif 269c17d615SPaolo Bonzini 279c17d615SPaolo Bonzini extern int kvm_allowed; 289c17d615SPaolo Bonzini extern bool kvm_kernel_irqchip; 299c17d615SPaolo Bonzini extern bool kvm_async_interrupts_allowed; 309c17d615SPaolo Bonzini extern bool kvm_irqfds_allowed; 319c17d615SPaolo Bonzini extern bool kvm_msi_via_irqfd_allowed; 329c17d615SPaolo Bonzini extern bool kvm_gsi_routing_allowed; 339c17d615SPaolo Bonzini 349c17d615SPaolo Bonzini #if defined CONFIG_KVM || !defined NEED_CPU_H 359c17d615SPaolo Bonzini #define kvm_enabled() (kvm_allowed) 369c17d615SPaolo Bonzini /** 379c17d615SPaolo Bonzini * kvm_irqchip_in_kernel: 389c17d615SPaolo Bonzini * 399c17d615SPaolo Bonzini * Returns: true if the user asked us to create an in-kernel 409c17d615SPaolo Bonzini * irqchip via the "kernel_irqchip=on" machine option. 419c17d615SPaolo Bonzini * What this actually means is architecture and machine model 429c17d615SPaolo Bonzini * specific: on PC, for instance, it means that the LAPIC, 439c17d615SPaolo Bonzini * IOAPIC and PIT are all in kernel. This function should never 449c17d615SPaolo Bonzini * be used from generic target-independent code: use one of the 459c17d615SPaolo Bonzini * following functions or some other specific check instead. 469c17d615SPaolo Bonzini */ 479c17d615SPaolo Bonzini #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip) 489c17d615SPaolo Bonzini 499c17d615SPaolo Bonzini /** 509c17d615SPaolo Bonzini * kvm_async_interrupts_enabled: 519c17d615SPaolo Bonzini * 529c17d615SPaolo Bonzini * Returns: true if we can deliver interrupts to KVM 539c17d615SPaolo Bonzini * asynchronously (ie by ioctl from any thread at any time) 549c17d615SPaolo Bonzini * rather than having to do interrupt delivery synchronously 559c17d615SPaolo Bonzini * (where the vcpu must be stopped at a suitable point first). 569c17d615SPaolo Bonzini */ 579c17d615SPaolo Bonzini #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed) 589c17d615SPaolo Bonzini 599c17d615SPaolo Bonzini /** 609c17d615SPaolo Bonzini * kvm_irqfds_enabled: 619c17d615SPaolo Bonzini * 629c17d615SPaolo Bonzini * Returns: true if we can use irqfds to inject interrupts into 639c17d615SPaolo Bonzini * a KVM CPU (ie the kernel supports irqfds and we are running 649c17d615SPaolo Bonzini * with a configuration where it is meaningful to use them). 659c17d615SPaolo Bonzini */ 669c17d615SPaolo Bonzini #define kvm_irqfds_enabled() (kvm_irqfds_allowed) 679c17d615SPaolo Bonzini 689c17d615SPaolo Bonzini /** 699c17d615SPaolo Bonzini * kvm_msi_via_irqfd_enabled: 709c17d615SPaolo Bonzini * 719c17d615SPaolo Bonzini * Returns: true if we can route a PCI MSI (Message Signaled Interrupt) 729c17d615SPaolo Bonzini * to a KVM CPU via an irqfd. This requires that the kernel supports 739c17d615SPaolo Bonzini * this and that we're running in a configuration that permits it. 749c17d615SPaolo Bonzini */ 759c17d615SPaolo Bonzini #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed) 769c17d615SPaolo Bonzini 779c17d615SPaolo Bonzini /** 789c17d615SPaolo Bonzini * kvm_gsi_routing_enabled: 799c17d615SPaolo Bonzini * 809c17d615SPaolo Bonzini * Returns: true if GSI routing is enabled (ie the kernel supports 819c17d615SPaolo Bonzini * it and we're running in a configuration that permits it). 829c17d615SPaolo Bonzini */ 839c17d615SPaolo Bonzini #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) 849c17d615SPaolo Bonzini 859c17d615SPaolo Bonzini #else 869c17d615SPaolo Bonzini #define kvm_enabled() (0) 879c17d615SPaolo Bonzini #define kvm_irqchip_in_kernel() (false) 889c17d615SPaolo Bonzini #define kvm_async_interrupts_enabled() (false) 899c17d615SPaolo Bonzini #define kvm_irqfds_enabled() (false) 909c17d615SPaolo Bonzini #define kvm_msi_via_irqfd_enabled() (false) 919c17d615SPaolo Bonzini #define kvm_gsi_routing_allowed() (false) 929c17d615SPaolo Bonzini #endif 939c17d615SPaolo Bonzini 949c17d615SPaolo Bonzini struct kvm_run; 959c17d615SPaolo Bonzini struct kvm_lapic_state; 969c17d615SPaolo Bonzini 979c17d615SPaolo Bonzini typedef struct KVMCapabilityInfo { 989c17d615SPaolo Bonzini const char *name; 999c17d615SPaolo Bonzini int value; 1009c17d615SPaolo Bonzini } KVMCapabilityInfo; 1019c17d615SPaolo Bonzini 1029c17d615SPaolo Bonzini #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP } 1039c17d615SPaolo Bonzini #define KVM_CAP_LAST_INFO { NULL, 0 } 1049c17d615SPaolo Bonzini 1059c17d615SPaolo Bonzini struct KVMState; 1069c17d615SPaolo Bonzini typedef struct KVMState KVMState; 1079c17d615SPaolo Bonzini extern KVMState *kvm_state; 1089c17d615SPaolo Bonzini 1099c17d615SPaolo Bonzini /* external API */ 1109c17d615SPaolo Bonzini 1119c17d615SPaolo Bonzini int kvm_init(void); 1129c17d615SPaolo Bonzini 1139c17d615SPaolo Bonzini int kvm_has_sync_mmu(void); 1149c17d615SPaolo Bonzini int kvm_has_vcpu_events(void); 1159c17d615SPaolo Bonzini int kvm_has_robust_singlestep(void); 1169c17d615SPaolo Bonzini int kvm_has_debugregs(void); 1179c17d615SPaolo Bonzini int kvm_has_xsave(void); 1189c17d615SPaolo Bonzini int kvm_has_xcrs(void); 1199c17d615SPaolo Bonzini int kvm_has_pit_state2(void); 1209c17d615SPaolo Bonzini int kvm_has_many_ioeventfds(void); 1219c17d615SPaolo Bonzini int kvm_has_gsi_routing(void); 1229c17d615SPaolo Bonzini int kvm_has_intx_set_mask(void); 1239c17d615SPaolo Bonzini 124*504134d2SAndreas Färber int kvm_init_vcpu(CPUState *cpu); 1259c17d615SPaolo Bonzini 126*504134d2SAndreas Färber #ifdef NEED_CPU_H 1279c17d615SPaolo Bonzini int kvm_cpu_exec(CPUArchState *env); 1289c17d615SPaolo Bonzini 1299c17d615SPaolo Bonzini #if !defined(CONFIG_USER_ONLY) 1309c17d615SPaolo Bonzini void *kvm_vmalloc(ram_addr_t size); 1319c17d615SPaolo Bonzini void *kvm_arch_vmalloc(ram_addr_t size); 1329c17d615SPaolo Bonzini void kvm_setup_guest_memory(void *start, size_t size); 1339c17d615SPaolo Bonzini 1349c17d615SPaolo Bonzini void kvm_flush_coalesced_mmio_buffer(void); 1359c17d615SPaolo Bonzini #endif 1369c17d615SPaolo Bonzini 1379c17d615SPaolo Bonzini int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr, 1389c17d615SPaolo Bonzini target_ulong len, int type); 1399c17d615SPaolo Bonzini int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr, 1409c17d615SPaolo Bonzini target_ulong len, int type); 1419c17d615SPaolo Bonzini void kvm_remove_all_breakpoints(CPUArchState *current_env); 1429c17d615SPaolo Bonzini int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap); 1439c17d615SPaolo Bonzini #ifndef _WIN32 1449c17d615SPaolo Bonzini int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset); 1459c17d615SPaolo Bonzini #endif 1469c17d615SPaolo Bonzini 1479c17d615SPaolo Bonzini int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr); 1489c17d615SPaolo Bonzini int kvm_on_sigbus(int code, void *addr); 1499c17d615SPaolo Bonzini 1509c17d615SPaolo Bonzini /* internal API */ 1519c17d615SPaolo Bonzini 1529c17d615SPaolo Bonzini int kvm_ioctl(KVMState *s, int type, ...); 1539c17d615SPaolo Bonzini 1549c17d615SPaolo Bonzini int kvm_vm_ioctl(KVMState *s, int type, ...); 1559c17d615SPaolo Bonzini 156501a7ce7SAndreas Färber int kvm_vcpu_ioctl(CPUState *cpu, int type, ...); 1579c17d615SPaolo Bonzini 1589c17d615SPaolo Bonzini /* Arch specific hooks */ 1599c17d615SPaolo Bonzini 1609c17d615SPaolo Bonzini extern const KVMCapabilityInfo kvm_arch_required_capabilities[]; 1619c17d615SPaolo Bonzini 162501a7ce7SAndreas Färber void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run); 163501a7ce7SAndreas Färber void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run); 1649c17d615SPaolo Bonzini 165501a7ce7SAndreas Färber int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run); 1669c17d615SPaolo Bonzini 167501a7ce7SAndreas Färber int kvm_arch_process_async_events(CPUState *cpu); 1689c17d615SPaolo Bonzini 169501a7ce7SAndreas Färber int kvm_arch_get_registers(CPUState *cpu); 1709c17d615SPaolo Bonzini 1719c17d615SPaolo Bonzini /* state subset only touched by the VCPU itself during runtime */ 1729c17d615SPaolo Bonzini #define KVM_PUT_RUNTIME_STATE 1 1739c17d615SPaolo Bonzini /* state subset modified during VCPU reset */ 1749c17d615SPaolo Bonzini #define KVM_PUT_RESET_STATE 2 1759c17d615SPaolo Bonzini /* full state set, modified during initialization or on vmload */ 1769c17d615SPaolo Bonzini #define KVM_PUT_FULL_STATE 3 1779c17d615SPaolo Bonzini 178501a7ce7SAndreas Färber int kvm_arch_put_registers(CPUState *cpu, int level); 1799c17d615SPaolo Bonzini 1809c17d615SPaolo Bonzini int kvm_arch_init(KVMState *s); 1819c17d615SPaolo Bonzini 182501a7ce7SAndreas Färber int kvm_arch_init_vcpu(CPUState *cpu); 1839c17d615SPaolo Bonzini 184501a7ce7SAndreas Färber void kvm_arch_reset_vcpu(CPUState *cpu); 1859c17d615SPaolo Bonzini 186501a7ce7SAndreas Färber int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); 1879c17d615SPaolo Bonzini int kvm_arch_on_sigbus(int code, void *addr); 1889c17d615SPaolo Bonzini 1899c17d615SPaolo Bonzini void kvm_arch_init_irq_routing(KVMState *s); 1909c17d615SPaolo Bonzini 1919c17d615SPaolo Bonzini int kvm_set_irq(KVMState *s, int irq, int level); 1929c17d615SPaolo Bonzini int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg); 1939c17d615SPaolo Bonzini 1949c17d615SPaolo Bonzini void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin); 1959c17d615SPaolo Bonzini 1969c17d615SPaolo Bonzini void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); 1979c17d615SPaolo Bonzini void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); 1989c17d615SPaolo Bonzini 1999c17d615SPaolo Bonzini struct kvm_guest_debug; 2009c17d615SPaolo Bonzini struct kvm_debug_exit_arch; 2019c17d615SPaolo Bonzini 2029c17d615SPaolo Bonzini struct kvm_sw_breakpoint { 2039c17d615SPaolo Bonzini target_ulong pc; 2049c17d615SPaolo Bonzini target_ulong saved_insn; 2059c17d615SPaolo Bonzini int use_count; 2069c17d615SPaolo Bonzini QTAILQ_ENTRY(kvm_sw_breakpoint) entry; 2079c17d615SPaolo Bonzini }; 2089c17d615SPaolo Bonzini 2099c17d615SPaolo Bonzini QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint); 2109c17d615SPaolo Bonzini 211501a7ce7SAndreas Färber struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *cpu, 2129c17d615SPaolo Bonzini target_ulong pc); 2139c17d615SPaolo Bonzini 214501a7ce7SAndreas Färber int kvm_sw_breakpoints_active(CPUState *cpu); 2159c17d615SPaolo Bonzini 216501a7ce7SAndreas Färber int kvm_arch_insert_sw_breakpoint(CPUState *current_cpu, 2179c17d615SPaolo Bonzini struct kvm_sw_breakpoint *bp); 218501a7ce7SAndreas Färber int kvm_arch_remove_sw_breakpoint(CPUState *current_cpu, 2199c17d615SPaolo Bonzini struct kvm_sw_breakpoint *bp); 2209c17d615SPaolo Bonzini int kvm_arch_insert_hw_breakpoint(target_ulong addr, 2219c17d615SPaolo Bonzini target_ulong len, int type); 2229c17d615SPaolo Bonzini int kvm_arch_remove_hw_breakpoint(target_ulong addr, 2239c17d615SPaolo Bonzini target_ulong len, int type); 2249c17d615SPaolo Bonzini void kvm_arch_remove_all_hw_breakpoints(void); 2259c17d615SPaolo Bonzini 226501a7ce7SAndreas Färber void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg); 2279c17d615SPaolo Bonzini 228501a7ce7SAndreas Färber bool kvm_arch_stop_on_emulation_error(CPUState *cpu); 2299c17d615SPaolo Bonzini 2309c17d615SPaolo Bonzini int kvm_check_extension(KVMState *s, unsigned int extension); 2319c17d615SPaolo Bonzini 2329c17d615SPaolo Bonzini uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function, 2339c17d615SPaolo Bonzini uint32_t index, int reg); 2349c17d615SPaolo Bonzini void kvm_cpu_synchronize_state(CPUArchState *env); 2359c17d615SPaolo Bonzini void kvm_cpu_synchronize_post_reset(CPUArchState *env); 2369c17d615SPaolo Bonzini void kvm_cpu_synchronize_post_init(CPUArchState *env); 2379c17d615SPaolo Bonzini 2389c17d615SPaolo Bonzini /* generic hooks - to be moved/refactored once there are more users */ 2399c17d615SPaolo Bonzini 2409c17d615SPaolo Bonzini static inline void cpu_synchronize_state(CPUArchState *env) 2419c17d615SPaolo Bonzini { 2429c17d615SPaolo Bonzini if (kvm_enabled()) { 2439c17d615SPaolo Bonzini kvm_cpu_synchronize_state(env); 2449c17d615SPaolo Bonzini } 2459c17d615SPaolo Bonzini } 2469c17d615SPaolo Bonzini 2479c17d615SPaolo Bonzini static inline void cpu_synchronize_post_reset(CPUArchState *env) 2489c17d615SPaolo Bonzini { 2499c17d615SPaolo Bonzini if (kvm_enabled()) { 2509c17d615SPaolo Bonzini kvm_cpu_synchronize_post_reset(env); 2519c17d615SPaolo Bonzini } 2529c17d615SPaolo Bonzini } 2539c17d615SPaolo Bonzini 2549c17d615SPaolo Bonzini static inline void cpu_synchronize_post_init(CPUArchState *env) 2559c17d615SPaolo Bonzini { 2569c17d615SPaolo Bonzini if (kvm_enabled()) { 2579c17d615SPaolo Bonzini kvm_cpu_synchronize_post_init(env); 2589c17d615SPaolo Bonzini } 2599c17d615SPaolo Bonzini } 2609c17d615SPaolo Bonzini 2619c17d615SPaolo Bonzini 2629c17d615SPaolo Bonzini #if !defined(CONFIG_USER_ONLY) 2639c17d615SPaolo Bonzini int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr, 2649c17d615SPaolo Bonzini hwaddr *phys_addr); 2659c17d615SPaolo Bonzini #endif 2669c17d615SPaolo Bonzini 2679c17d615SPaolo Bonzini #endif 2689c17d615SPaolo Bonzini int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign, 2699c17d615SPaolo Bonzini uint32_t size); 2709c17d615SPaolo Bonzini 2719c17d615SPaolo Bonzini int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign); 2729c17d615SPaolo Bonzini 2739c17d615SPaolo Bonzini int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg); 2749c17d615SPaolo Bonzini int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg); 2759c17d615SPaolo Bonzini void kvm_irqchip_release_virq(KVMState *s, int virq); 2769c17d615SPaolo Bonzini 2779c17d615SPaolo Bonzini int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); 2789c17d615SPaolo Bonzini int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); 2799c17d615SPaolo Bonzini void kvm_pc_gsi_handler(void *opaque, int n, int level); 2809c17d615SPaolo Bonzini void kvm_pc_setup_irq_routing(bool pci_enabled); 2819c17d615SPaolo Bonzini #endif 282