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