kvm.h

   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
  17 #include "config-host.h"
  18 #include "qemu-queue.h"
  19
  20 extern int kvm_allowed;
  21
  22 #ifdef CONFIG_KVM
  23 #define kvm_enabled() (kvm_allowed)
  24 #else
  25 #define kvm_enabled() (0)
  26 #endif
  27
  28 struct kvm_run;
  29
  30 /* external API */
  31
  32 int kvm_init(int smp_cpus);
  33
  34 #ifdef NEED_CPU_H
  35 int kvm_init_vcpu(CPUState *env);
  36
  37 int kvm_cpu_exec(CPUState *env);
  38
  39 #if !defined(CONFIG_USER_ONLY)
  40 int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
  41 int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
  42
  43 int kvm_has_sync_mmu(void);
  44 int kvm_has_vcpu_events(void);
  45 int kvm_has_robust_singlestep(void);
  46
  47 void kvm_setup_guest_memory(void *start, size_t size);
  48
  49 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  50 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  51 void kvm_flush_coalesced_mmio_buffer(void);
  52 #endif
  53
  54 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  55                           target_ulong len, int type);
  56 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  57                           target_ulong len, int type);
  58 void kvm_remove_all_breakpoints(CPUState *current_env);
  59 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  60 #ifndef _WIN32
  61 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  62 #endif
  63
  64 int kvm_pit_in_kernel(void);
  65 int kvm_irqchip_in_kernel(void);
  66
  67 /* internal API */
  68
  69 struct KVMState;
  70 typedef struct KVMState KVMState;
  71
  72 int kvm_ioctl(KVMState *s, int type, ...);
  73
  74 int kvm_vm_ioctl(KVMState *s, int type, ...);
  75
  76 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
  77
  78 /* Arch specific hooks */
  79
  80 int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
  81
  82 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
  83
  84 int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
  85
  86 int kvm_arch_get_registers(CPUState *env);
  87
  88 /* state subset only touched by the VCPU itself during runtime */
  89 #define KVM_PUT_RUNTIME_STATE   1
  90 /* state subset modified during VCPU reset */
  91 #define KVM_PUT_RESET_STATE     2
  92 /* full state set, modified during initialization or on vmload */
  93 #define KVM_PUT_FULL_STATE      3
  94
  95 int kvm_arch_put_registers(CPUState *env, int level);
  96
  97 int kvm_arch_init(KVMState *s, int smp_cpus);
  98
  99 int kvm_arch_init_vcpu(CPUState *env);
 100
 101 void kvm_arch_reset_vcpu(CPUState *env);
 102
 103 struct kvm_guest_debug;
 104 struct kvm_debug_exit_arch;
 105
 106 struct kvm_sw_breakpoint {
 107     target_ulong pc;
 108     target_ulong saved_insn;
 109     int use_count;
 110     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 111 };
 112
 113 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 114
 115 int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
 116
 117 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 118                                                  target_ulong pc);
 119
 120 int kvm_sw_breakpoints_active(CPUState *env);
 121
 122 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 123                                   struct kvm_sw_breakpoint *bp);
 124 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 125                                   struct kvm_sw_breakpoint *bp);
 126 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 127                                   target_ulong len, int type);
 128 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 129                                   target_ulong len, int type);
 130 void kvm_arch_remove_all_hw_breakpoints(void);
 131
 132 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 133
 134 int kvm_check_extension(KVMState *s, unsigned int extension);
 135
 136 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
 137                                       int reg);
 138 void kvm_cpu_synchronize_state(CPUState *env);
 139 void kvm_cpu_synchronize_post_reset(CPUState *env);
 140 void kvm_cpu_synchronize_post_init(CPUState *env);
 141
 142 /* generic hooks - to be moved/refactored once there are more users */
 143
 144 static inline void cpu_synchronize_state(CPUState *env)
 145 {
 146     if (kvm_enabled()) {
 147         kvm_cpu_synchronize_state(env);
 148     }
 149 }
 150
 151 static inline void cpu_synchronize_post_reset(CPUState *env)
 152 {
 153     if (kvm_enabled()) {
 154         kvm_cpu_synchronize_post_reset(env);
 155     }
 156 }
 157
 158 static inline void cpu_synchronize_post_init(CPUState *env)
 159 {
 160     if (kvm_enabled()) {
 161         kvm_cpu_synchronize_post_init(env);
 162     }
 163 }
 164 #endif
 165 #endif