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