/* * QEMU KVM support * * Copyright IBM, Corp. 2008 * * Authors: * Anthony Liguori <aliguori@us.ibm.com> * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. * */ #ifndef QEMU_KVM_H #define QEMU_KVM_H #include <errno.h> #include "config-host.h" #include "qemu-queue.h" #ifdef CONFIG_KVM #include <linux/kvm.h> #endif extern int kvm_allowed; extern bool kvm_kernel_irqchip; extern bool kvm_async_interrupts_allowed; extern bool kvm_irqfds_allowed; extern bool kvm_msi_via_irqfd_allowed; extern bool kvm_gsi_routing_allowed; #if defined CONFIG_KVM || !defined NEED_CPU_H #define kvm_enabled() (kvm_allowed) /** * kvm_irqchip_in_kernel: * * Returns: true if the user asked us to create an in-kernel * irqchip via the "kernel_irqchip=on" machine option. * What this actually means is architecture and machine model * specific: on PC, for instance, it means that the LAPIC, * IOAPIC and PIT are all in kernel. This function should never * be used from generic target-independent code: use one of the * following functions or some other specific check instead. */ #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip) /** * kvm_async_interrupts_enabled: * * Returns: true if we can deliver interrupts to KVM * asynchronously (ie by ioctl from any thread at any time) * rather than having to do interrupt delivery synchronously * (where the vcpu must be stopped at a suitable point first). */ #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed) /** * kvm_irqfds_enabled: * * Returns: true if we can use irqfds to inject interrupts into * a KVM CPU (ie the kernel supports irqfds and we are running * with a configuration where it is meaningful to use them). */ #define kvm_irqfds_enabled() (kvm_irqfds_allowed) /** * kvm_msi_via_irqfd_enabled: * * Returns: true if we can route a PCI MSI (Message Signaled Interrupt) * to a KVM CPU via an irqfd. This requires that the kernel supports * this and that we're running in a configuration that permits it. */ #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed) /** * kvm_gsi_routing_enabled: * * Returns: true if GSI routing is enabled (ie the kernel supports * it and we're running in a configuration that permits it). */ #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed) #else #define kvm_enabled() (0) #define kvm_irqchip_in_kernel() (false) #define kvm_async_interrupts_enabled() (false) #define kvm_irqfds_enabled() (false) #define kvm_msi_via_irqfd_enabled() (false) #define kvm_gsi_routing_allowed() (false) #endif struct kvm_run; struct kvm_lapic_state; typedef struct KVMCapabilityInfo { const char *name; int value; } KVMCapabilityInfo; #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP } #define KVM_CAP_LAST_INFO { NULL, 0 } struct KVMState; typedef struct KVMState KVMState; extern KVMState *kvm_state; /* external API */ int kvm_init(void); int kvm_has_sync_mmu(void); int kvm_has_vcpu_events(void); int kvm_has_robust_singlestep(void); int kvm_has_debugregs(void); int kvm_has_xsave(void); int kvm_has_xcrs(void); int kvm_has_pit_state2(void); int kvm_has_many_ioeventfds(void); int kvm_has_gsi_routing(void); int kvm_has_intx_set_mask(void); #ifdef NEED_CPU_H int kvm_init_vcpu(CPUArchState *env); int kvm_cpu_exec(CPUArchState *env); #if !defined(CONFIG_USER_ONLY) void *kvm_vmalloc(ram_addr_t size); void *kvm_arch_vmalloc(ram_addr_t size); void kvm_setup_guest_memory(void *start, size_t size); void kvm_flush_coalesced_mmio_buffer(void); #endif int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr, target_ulong len, int type); int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr, target_ulong len, int type); void kvm_remove_all_breakpoints(CPUArchState *current_env); int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap); #ifndef _WIN32 int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset); #endif int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr); int kvm_on_sigbus(int code, void *addr); /* internal API */ int kvm_ioctl(KVMState *s, int type, ...); int kvm_vm_ioctl(KVMState *s, int type, ...); int kvm_vcpu_ioctl(CPUArchState *env, int type, ...); /* Arch specific hooks */ extern const KVMCapabilityInfo kvm_arch_required_capabilities[]; void kvm_arch_pre_run(CPUArchState *env, struct kvm_run *run); void kvm_arch_post_run(CPUArchState *env, struct kvm_run *run); int kvm_arch_handle_exit(CPUArchState *env, struct kvm_run *run); int kvm_arch_process_async_events(CPUArchState *env); int kvm_arch_get_registers(CPUArchState *env); /* state subset only touched by the VCPU itself during runtime */ #define KVM_PUT_RUNTIME_STATE 1 /* state subset modified during VCPU reset */ #define KVM_PUT_RESET_STATE 2 /* full state set, modified during initialization or on vmload */ #define KVM_PUT_FULL_STATE 3 int kvm_arch_put_registers(CPUArchState *env, int level); int kvm_arch_init(KVMState *s); int kvm_arch_init_vcpu(CPUArchState *env); void kvm_arch_reset_vcpu(CPUArchState *env); int kvm_arch_on_sigbus_vcpu(CPUArchState *env, int code, void *addr); int kvm_arch_on_sigbus(int code, void *addr); void kvm_arch_init_irq_routing(KVMState *s); int kvm_set_irq(KVMState *s, int irq, int level); int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg); void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin); void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic); struct kvm_guest_debug; struct kvm_debug_exit_arch; struct kvm_sw_breakpoint { target_ulong pc; target_ulong saved_insn; int use_count; QTAILQ_ENTRY(kvm_sw_breakpoint) entry; }; QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint); struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env, target_ulong pc); int kvm_sw_breakpoints_active(CPUArchState *env); int kvm_arch_insert_sw_breakpoint(CPUArchState *current_env, struct kvm_sw_breakpoint *bp); int kvm_arch_remove_sw_breakpoint(CPUArchState *current_env, struct kvm_sw_breakpoint *bp); int kvm_arch_insert_hw_breakpoint(target_ulong addr, target_ulong len, int type); int kvm_arch_remove_hw_breakpoint(target_ulong addr, target_ulong len, int type); void kvm_arch_remove_all_hw_breakpoints(void); void kvm_arch_update_guest_debug(CPUArchState *env, struct kvm_guest_debug *dbg); bool kvm_arch_stop_on_emulation_error(CPUArchState *env); int kvm_check_extension(KVMState *s, unsigned int extension); uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function, uint32_t index, int reg); void kvm_cpu_synchronize_state(CPUArchState *env); void kvm_cpu_synchronize_post_reset(CPUArchState *env); void kvm_cpu_synchronize_post_init(CPUArchState *env); /* generic hooks - to be moved/refactored once there are more users */ static inline void cpu_synchronize_state(CPUArchState *env) { if (kvm_enabled()) { kvm_cpu_synchronize_state(env); } } static inline void cpu_synchronize_post_reset(CPUArchState *env) { if (kvm_enabled()) { kvm_cpu_synchronize_post_reset(env); } } static inline void cpu_synchronize_post_init(CPUArchState *env) { if (kvm_enabled()) { kvm_cpu_synchronize_post_init(env); } } #if !defined(CONFIG_USER_ONLY) int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr, hwaddr *phys_addr); #endif #endif int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign, uint32_t size); int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign); int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg); int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg); void kvm_irqchip_release_virq(KVMState *s, int virq); int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq); #endif