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 <stdbool.h>
  18 #include <errno.h>
  19 #include "config-host.h"
  20 #include "qemu-queue.h"
  21
  22 #ifdef CONFIG_KVM
  23 #include <linux/kvm.h>
  24 #endif
  25
  26 #ifdef CONFIG_KVM
  27 extern int kvm_allowed;
  28 #define kvm_enabled() (kvm_allowed)
  29 #else
  30 #define kvm_enabled() (0)
  31 #endif
  32
  33 struct kvm_run;
  34
  35 /* external API */
  36
  37 int kvm_init(int smp_cpus);
  38
  39 #ifdef NEED_CPU_H
  40 int kvm_init_vcpu(CPUState *env);
  41
  42 int kvm_cpu_exec(CPUState *env);
  43
  44 #if !defined(CONFIG_USER_ONLY)
  45 int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
  46 int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
  47
  48 int kvm_has_sync_mmu(void);
  49 int kvm_has_vcpu_events(void);
  50 int kvm_has_robust_singlestep(void);
  51
  52 void kvm_setup_guest_memory(void *start, size_t size);
  53
  54 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  55 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  56 void kvm_flush_coalesced_mmio_buffer(void);
  57 #endif
  58
  59 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  60                           target_ulong len, int type);
  61 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  62                           target_ulong len, int type);
  63 void kvm_remove_all_breakpoints(CPUState *current_env);
  64 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  65 #ifndef _WIN32
  66 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  67 #endif
  68
  69 int kvm_pit_in_kernel(void);
  70 int kvm_irqchip_in_kernel(void);
  71
  72 /* internal API */
  73
  74 struct KVMState;
  75 typedef struct KVMState KVMState;
  76
  77 int kvm_ioctl(KVMState *s, int type, ...);
  78
  79 int kvm_vm_ioctl(KVMState *s, int type, ...);
  80
  81 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
  82
  83 /* Arch specific hooks */
  84
  85 int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
  86
  87 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
  88
  89 int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
  90
  91 int kvm_arch_get_registers(CPUState *env);
  92
  93 /* state subset only touched by the VCPU itself during runtime */
  94 #define KVM_PUT_RUNTIME_STATE   1
  95 /* state subset modified during VCPU reset */
  96 #define KVM_PUT_RESET_STATE     2
  97 /* full state set, modified during initialization or on vmload */
  98 #define KVM_PUT_FULL_STATE      3
  99
 100 int kvm_arch_put_registers(CPUState *env, int level);
 101
 102 int kvm_arch_init(KVMState *s, int smp_cpus);
 103
 104 int kvm_arch_init_vcpu(CPUState *env);
 105
 106 void kvm_arch_reset_vcpu(CPUState *env);
 107
 108 struct kvm_guest_debug;
 109 struct kvm_debug_exit_arch;
 110
 111 struct kvm_sw_breakpoint {
 112     target_ulong pc;
 113     target_ulong saved_insn;
 114     int use_count;
 115     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 116 };
 117
 118 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 119
 120 int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
 121
 122 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 123                                                  target_ulong pc);
 124
 125 int kvm_sw_breakpoints_active(CPUState *env);
 126
 127 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 128                                   struct kvm_sw_breakpoint *bp);
 129 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 130                                   struct kvm_sw_breakpoint *bp);
 131 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 132                                   target_ulong len, int type);
 133 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 134                                   target_ulong len, int type);
 135 void kvm_arch_remove_all_hw_breakpoints(void);
 136
 137 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 138
 139 int kvm_check_extension(KVMState *s, unsigned int extension);
 140
 141 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
 142                                       int reg);
 143 void kvm_cpu_synchronize_state(CPUState *env);
 144 void kvm_cpu_synchronize_post_reset(CPUState *env);
 145 void kvm_cpu_synchronize_post_init(CPUState *env);
 146
 147 /* generic hooks - to be moved/refactored once there are more users */
 148
 149 static inline void cpu_synchronize_state(CPUState *env)
 150 {
 151     if (kvm_enabled()) {
 152         kvm_cpu_synchronize_state(env);
 153     }
 154 }
 155
 156 static inline void cpu_synchronize_post_reset(CPUState *env)
 157 {
 158     if (kvm_enabled()) {
 159         kvm_cpu_synchronize_post_reset(env);
 160     }
 161 }
 162
 163 static inline void cpu_synchronize_post_init(CPUState *env)
 164 {
 165     if (kvm_enabled()) {
 166         kvm_cpu_synchronize_post_init(env);
 167     }
 168 }
 169
 170 #if defined(KVM_IOEVENTFD) && defined(CONFIG_KVM)
 171 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 172 #else
 173 static inline
 174 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign)
 175 {
 176     return -ENOSYS;
 177 }
 178 #endif
 179
 180 #endif
 181 #endif