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