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 <errno.h>
  18 #include "config-host.h"
  19 #include "qemu-queue.h"
  20 #include "qemu-kvm.h"
  21
  22 #ifdef CONFIG_KVM
  23 #include <linux/kvm.h>
  24 #endif
  25
  26 extern int kvm_allowed;
  27
  28 #if defined CONFIG_KVM || !defined NEED_CPU_H
  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 int kvm_has_xsave(void);
  47 int kvm_has_xcrs(void);
  48
  49 #ifdef NEED_CPU_H
  50 int kvm_init_vcpu(CPUState *env);
  51
  52 int kvm_cpu_exec(CPUState *env);
  53
  54 #if !defined(CONFIG_USER_ONLY)
  55 int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
  56 int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
  57
  58 void kvm_cpu_register_phys_memory_client(void);
  59
  60 void kvm_setup_guest_memory(void *start, size_t size);
  61
  62 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  63 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  64 void kvm_flush_coalesced_mmio_buffer(void);
  65 #endif
  66
  67 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  68                           target_ulong len, int type);
  69 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  70                           target_ulong len, int type);
  71 void kvm_remove_all_breakpoints(CPUState *current_env);
  72 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  73 #ifndef _WIN32
  74 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  75 #endif
  76
  77 int kvm_pit_in_kernel(void);
  78 int kvm_irqchip_in_kernel(void);
  79
  80 /* internal API */
  81
  82 struct KVMState;
  83 typedef struct KVMState KVMState;
  84
  85 int kvm_ioctl(KVMState *s, int type, ...);
  86
  87 int kvm_vm_ioctl(KVMState *s, int type, ...);
  88
  89 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
  90
  91 /* Arch specific hooks */
  92
  93 int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
  94
  95 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
  96
  97 int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
  98
  99 #ifdef KVM_UPSTREAM
 100 int kvm_arch_process_irqchip_events(CPUState *env);
 101 #endif
 102
 103 int kvm_arch_get_registers(CPUState *env);
 104
 105 /* state subset only touched by the VCPU itself during runtime */
 106 #define KVM_PUT_RUNTIME_STATE   1
 107 /* state subset modified during VCPU reset */
 108 #define KVM_PUT_RESET_STATE     2
 109 /* full state set, modified during initialization or on vmload */
 110 #define KVM_PUT_FULL_STATE      3
 111
 112 int kvm_arch_put_registers(CPUState *env, int level);
 113
 114 int kvm_arch_init(KVMState *s, int smp_cpus);
 115
 116 int kvm_arch_init_vcpu(CPUState *env);
 117
 118 void kvm_arch_reset_vcpu(CPUState *env);
 119
 120 struct kvm_guest_debug;
 121 struct kvm_debug_exit_arch;
 122
 123 struct kvm_sw_breakpoint {
 124     target_ulong pc;
 125     target_ulong saved_insn;
 126     int use_count;
 127     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 128 };
 129
 130 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 131
 132 int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
 133
 134 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 135                                                  target_ulong pc);
 136
 137 int kvm_sw_breakpoints_active(CPUState *env);
 138
 139 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 140                                   struct kvm_sw_breakpoint *bp);
 141 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 142                                   struct kvm_sw_breakpoint *bp);
 143 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 144                                   target_ulong len, int type);
 145 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 146                                   target_ulong len, int type);
 147 void kvm_arch_remove_all_hw_breakpoints(void);
 148
 149 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 150
 151 bool kvm_arch_stop_on_emulation_error(CPUState *env);
 152
 153 int kvm_check_extension(KVMState *s, unsigned int extension);
 154
 155 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
 156                                       uint32_t index, int reg);
 157 void kvm_cpu_synchronize_state(CPUState *env);
 158 void kvm_cpu_synchronize_post_reset(CPUState *env);
 159 void kvm_cpu_synchronize_post_init(CPUState *env);
 160
 161 /* generic hooks - to be moved/refactored once there are more users */
 162
 163 static inline void cpu_synchronize_state(CPUState *env)
 164 {
 165     if (kvm_enabled()) {
 166         kvm_cpu_synchronize_state(env);
 167     }
 168 }
 169
 170 static inline void cpu_synchronize_post_reset(CPUState *env)
 171 {
 172     if (kvm_enabled()) {
 173         kvm_cpu_synchronize_post_reset(env);
 174     }
 175 }
 176
 177 static inline void cpu_synchronize_post_init(CPUState *env)
 178 {
 179     if (kvm_enabled()) {
 180         kvm_cpu_synchronize_post_init(env);
 181     }
 182 }
 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 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 197 #endif