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