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
  21 #ifdef CONFIG_KVM
  22 #include <linux/kvm.h>
  23 #endif
  24
  25 extern int kvm_allowed;
  26
  27 #if defined CONFIG_KVM || !defined NEED_CPU_H
  28 #define kvm_enabled() (kvm_allowed)
  29 #else
  30 #define kvm_enabled() (0)
  31 #endif
  32
  33 struct kvm_run;
  34
  35 /* external API */
  36
  37 int kvm_init(int smp_cpus);
  38
  39 int kvm_has_sync_mmu(void);
  40 int kvm_has_vcpu_events(void);
  41 int kvm_has_robust_singlestep(void);
  42 int kvm_has_debugregs(void);
  43 int kvm_has_xsave(void);
  44 int kvm_has_xcrs(void);
  45 int kvm_has_many_ioeventfds(void);
  46
  47 #ifdef NEED_CPU_H
  48 int kvm_init_vcpu(CPUState *env);
  49
  50 int kvm_cpu_exec(CPUState *env);
  51
  52 #if !defined(CONFIG_USER_ONLY)
  53 int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
  54 int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
  55
  56 void kvm_setup_guest_memory(void *start, size_t size);
  57
  58 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  59 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  60 void kvm_flush_coalesced_mmio_buffer(void);
  61 #endif
  62
  63 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  64                           target_ulong len, int type);
  65 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  66                           target_ulong len, int type);
  67 void kvm_remove_all_breakpoints(CPUState *current_env);
  68 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  69 #ifndef _WIN32
  70 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  71 #endif
  72
  73 int kvm_pit_in_kernel(void);
  74 int kvm_irqchip_in_kernel(void);
  75
  76 /* internal API */
  77
  78 struct KVMState;
  79 typedef struct KVMState KVMState;
  80
  81 int kvm_ioctl(KVMState *s, int type, ...);
  82
  83 int kvm_vm_ioctl(KVMState *s, int type, ...);
  84
  85 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
  86
  87 /* Arch specific hooks */
  88
  89 int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
  90
  91 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
  92
  93 int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
  94
  95 int kvm_arch_process_irqchip_events(CPUState *env);
  96
  97 int kvm_arch_get_registers(CPUState *env);
  98
  99 /* state subset only touched by the VCPU itself during runtime */
 100 #define KVM_PUT_RUNTIME_STATE   1
 101 /* state subset modified during VCPU reset */
 102 #define KVM_PUT_RESET_STATE     2
 103 /* full state set, modified during initialization or on vmload */
 104 #define KVM_PUT_FULL_STATE      3
 105
 106 int kvm_arch_put_registers(CPUState *env, int level);
 107
 108 int kvm_arch_init(KVMState *s, int smp_cpus);
 109
 110 int kvm_arch_init_vcpu(CPUState *env);
 111
 112 void kvm_arch_reset_vcpu(CPUState *env);
 113
 114 int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
 115 int kvm_on_sigbus(int code, void *addr);
 116
 117 struct kvm_guest_debug;
 118 struct kvm_debug_exit_arch;
 119
 120 struct kvm_sw_breakpoint {
 121     target_ulong pc;
 122     target_ulong saved_insn;
 123     int use_count;
 124     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 125 };
 126
 127 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 128
 129 int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
 130
 131 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 132                                                  target_ulong pc);
 133
 134 int kvm_sw_breakpoints_active(CPUState *env);
 135
 136 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 137                                   struct kvm_sw_breakpoint *bp);
 138 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 139                                   struct kvm_sw_breakpoint *bp);
 140 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 141                                   target_ulong len, int type);
 142 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 143                                   target_ulong len, int type);
 144 void kvm_arch_remove_all_hw_breakpoints(void);
 145
 146 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 147
 148 bool kvm_arch_stop_on_emulation_error(CPUState *env);
 149
 150 int kvm_check_extension(KVMState *s, unsigned int extension);
 151
 152 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
 153                                       uint32_t index, int reg);
 154 void kvm_cpu_synchronize_state(CPUState *env);
 155 void kvm_cpu_synchronize_post_reset(CPUState *env);
 156 void kvm_cpu_synchronize_post_init(CPUState *env);
 157
 158 /* generic hooks - to be moved/refactored once there are more users */
 159
 160 static inline void cpu_synchronize_state(CPUState *env)
 161 {
 162     if (kvm_enabled()) {
 163         kvm_cpu_synchronize_state(env);
 164     }
 165 }
 166
 167 static inline void cpu_synchronize_post_reset(CPUState *env)
 168 {
 169     if (kvm_enabled()) {
 170         kvm_cpu_synchronize_post_reset(env);
 171     }
 172 }
 173
 174 static inline void cpu_synchronize_post_init(CPUState *env)
 175 {
 176     if (kvm_enabled()) {
 177         kvm_cpu_synchronize_post_init(env);
 178     }
 179 }
 180
 181
 182 #if !defined(CONFIG_USER_ONLY)
 183 int kvm_physical_memory_addr_from_ram(KVMState *s, ram_addr_t ram_addr,
 184                                       target_phys_addr_t *phys_addr);
 185 #endif
 186
 187 #endif
 188 int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign);
 189
 190 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 191 #endif