| /* |
| * 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" |
| #include "qom/cpu.h" |
| |
| #ifdef CONFIG_KVM |
| #include <linux/kvm.h> |
| #include <linux/kvm_para.h> |
| #else |
| /* These constants must never be used at runtime if kvm_enabled() is false. |
| * They exist so we don't need #ifdefs around KVM-specific code that already |
| * checks kvm_enabled() properly. |
| */ |
| #define KVM_CPUID_SIGNATURE 0 |
| #define KVM_CPUID_FEATURES 0 |
| #define KVM_FEATURE_CLOCKSOURCE 0 |
| #define KVM_FEATURE_NOP_IO_DELAY 0 |
| #define KVM_FEATURE_MMU_OP 0 |
| #define KVM_FEATURE_CLOCKSOURCE2 0 |
| #define KVM_FEATURE_ASYNC_PF 0 |
| #define KVM_FEATURE_STEAL_TIME 0 |
| #define KVM_FEATURE_PV_EOI 0 |
| #define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 0 |
| #endif |
| |
| extern bool 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); |
| |
| int kvm_init_vcpu(CPUState *cpu); |
| |
| #ifdef NEED_CPU_H |
| 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(CPUState *cpu, 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(CPUState *cpu, int type, ...); |
| |
| /* Arch specific hooks */ |
| |
| extern const KVMCapabilityInfo kvm_arch_required_capabilities[]; |
| |
| void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run); |
| void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run); |
| |
| int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run); |
| |
| int kvm_arch_process_async_events(CPUState *cpu); |
| |
| int kvm_arch_get_registers(CPUState *cpu); |
| |
| /* 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(CPUState *cpu, int level); |
| |
| int kvm_arch_init(KVMState *s); |
| |
| int kvm_arch_init_vcpu(CPUState *cpu); |
| |
| /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */ |
| unsigned long kvm_arch_vcpu_id(CPUState *cpu); |
| |
| void kvm_arch_reset_vcpu(CPUState *cpu); |
| |
| int kvm_arch_on_sigbus_vcpu(CPUState *cpu, 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(CPUState *cpu, |
| target_ulong pc); |
| |
| int kvm_sw_breakpoints_active(CPUState *cpu); |
| |
| int kvm_arch_insert_sw_breakpoint(CPUState *current_cpu, |
| struct kvm_sw_breakpoint *bp); |
| int kvm_arch_remove_sw_breakpoint(CPUState *current_cpu, |
| 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(CPUState *cpu, struct kvm_guest_debug *dbg); |
| |
| bool kvm_arch_stop_on_emulation_error(CPUState *cpu); |
| |
| 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); |
| void kvm_pc_gsi_handler(void *opaque, int n, int level); |
| void kvm_pc_setup_irq_routing(bool pci_enabled); |
| #endif |