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 #include "qemu-kvm.h"
  22
  23 #ifdef CONFIG_KVM
  24 #include <linux/kvm.h>
  25 #endif
  26
  27 #ifdef CONFIG_KVM
  28 extern int kvm_allowed;
  29 #define kvm_enabled() (kvm_allowed)
  30 #else
  31 #define kvm_enabled() (0)
  32 #endif
  33
  34 #ifdef KVM_UPSTREAM
  35 struct kvm_run;
  36
  37 /* external API */
  38
  39 int kvm_init(int smp_cpus);
  40 #endif /* KVM_UPSTREAM */
  41
  42 int kvm_has_sync_mmu(void);
  43 int kvm_has_vcpu_events(void);
  44 int kvm_has_robust_singlestep(void);
  45 int kvm_has_debugregs(void);
  46
  47 #ifdef NEED_CPU_H
  48 int kvm_init_vcpu(CPUState *env);
  49
  50 int kvm_cpu_exec(CPUState *env);
  51
  52 #if !defined(CONFIG_USER_ONLY)
  53 int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
  54 int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
  55
  56 void kvm_cpu_register_phys_memory_client(void);
  57
  58 void kvm_setup_guest_memory(void *start, size_t size);
  59
  60 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  61 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  62 void kvm_flush_coalesced_mmio_buffer(void);
  63 #endif
  64
  65 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  66                           target_ulong len, int type);
  67 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  68                           target_ulong len, int type);
  69 void kvm_remove_all_breakpoints(CPUState *current_env);
  70 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  71 #ifndef _WIN32
  72 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  73 #endif
  74
  75 int kvm_pit_in_kernel(void);
  76 int kvm_irqchip_in_kernel(void);
  77
  78 /* internal API */
  79
  80 struct KVMState;
  81 typedef struct KVMState KVMState;
  82
  83 int kvm_ioctl(KVMState *s, int type, ...);
  84
  85 int kvm_vm_ioctl(KVMState *s, int type, ...);
  86
  87 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
  88
  89 /* Arch specific hooks */
  90
  91 int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
  92
  93 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
  94
  95 int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
  96
  97 int kvm_arch_get_registers(CPUState *env);
  98
  99 /* state subset only touched by the VCPU itself during runtime */
 100 #define KVM_PUT_RUNTIME_STATE   1
 101 /* state subset modified during VCPU reset */
 102 #define KVM_PUT_RESET_STATE     2
 103 /* full state set, modified during initialization or on vmload */
 104 #define KVM_PUT_FULL_STATE      3
 105
 106 int kvm_arch_put_registers(CPUState *env, int level);
 107
 108 int kvm_arch_init(KVMState *s, int smp_cpus);
 109
 110 int kvm_arch_init_vcpu(CPUState *env);
 111
 112 void kvm_arch_reset_vcpu(CPUState *env);
 113
 114 struct kvm_guest_debug;
 115 struct kvm_debug_exit_arch;
 116
 117 struct kvm_sw_breakpoint {
 118     target_ulong pc;
 119     target_ulong saved_insn;
 120     int use_count;
 121     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 122 };
 123
 124 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 125
 126 int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
 127
 128 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 129                                                  target_ulong pc);
 130
 131 int kvm_sw_breakpoints_active(CPUState *env);
 132
 133 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 134                                   struct kvm_sw_breakpoint *bp);
 135 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 136                                   struct kvm_sw_breakpoint *bp);
 137 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 138                                   target_ulong len, int type);
 139 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 140                                   target_ulong len, int type);
 141 void kvm_arch_remove_all_hw_breakpoints(void);
 142
 143 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 144
 145 int kvm_check_extension(KVMState *s, unsigned int extension);
 146
 147 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
 148                                       int reg);
 149 void kvm_cpu_synchronize_state(CPUState *env);
 150 void kvm_cpu_synchronize_post_reset(CPUState *env);
 151 void kvm_cpu_synchronize_post_init(CPUState *env);
 152
 153 /* generic hooks - to be moved/refactored once there are more users */
 154
 155 static inline void cpu_synchronize_state(CPUState *env)
 156 {
 157     if (kvm_enabled()) {
 158         kvm_cpu_synchronize_state(env);
 159     }
 160 }
 161
 162 static inline void cpu_synchronize_post_reset(CPUState *env)
 163 {
 164     if (kvm_enabled()) {
 165         kvm_cpu_synchronize_post_reset(env);
 166     }
 167 }
 168
 169 static inline void cpu_synchronize_post_init(CPUState *env)
 170 {
 171     if (kvm_enabled()) {
 172         kvm_cpu_synchronize_post_init(env);
 173     }
 174 }
 175
 176 #if defined(KVM_IOEVENTFD) && defined(CONFIG_KVM)
 177 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 178 #else
 179 static inline
 180 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign)
 181 {
 182     return -ENOSYS;
 183 }
 184 #endif
 185
 186 #if defined(KVM_IRQFD) && defined(CONFIG_KVM)
 187 int kvm_set_irqfd(int gsi, int fd, bool assigned);
 188 #else
 189 static inline
 190 int kvm_set_irqfd(int gsi, int fd, bool assigned)
 191 {
 192     return -ENOSYS;
 193 }
 194 #endif
 195
 196 #endif
 197 #endif