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 typedef struct KVMCapabilityInfo {
  36     const char *name;
  37     int value;
  38 } KVMCapabilityInfo;
  39
  40 #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
  41 #define KVM_CAP_LAST_INFO { NULL, 0 }
  42
  43 /* external API */
  44
  45 int kvm_init(void);
  46
  47 int kvm_has_sync_mmu(void);
  48 int kvm_has_vcpu_events(void);
  49 int kvm_has_robust_singlestep(void);
  50 int kvm_has_debugregs(void);
  51 int kvm_has_xsave(void);
  52 int kvm_has_xcrs(void);
  53 int kvm_has_many_ioeventfds(void);
  54
  55 #ifdef NEED_CPU_H
  56 int kvm_init_vcpu(CPUState *env);
  57
  58 int kvm_cpu_exec(CPUState *env);
  59
  60 #if !defined(CONFIG_USER_ONLY)
  61 void kvm_setup_guest_memory(void *start, size_t size);
  62
  63 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  64 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  65 void kvm_flush_coalesced_mmio_buffer(void);
  66 #endif
  67
  68 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  69                           target_ulong len, int type);
  70 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  71                           target_ulong len, int type);
  72 void kvm_remove_all_breakpoints(CPUState *current_env);
  73 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  74 #ifndef _WIN32
  75 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  76 #endif
  77
  78 int kvm_pit_in_kernel(void);
  79 int kvm_irqchip_in_kernel(void);
  80
  81 int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
  82 int kvm_on_sigbus(int code, void *addr);
  83
  84 /* internal API */
  85
  86 struct KVMState;
  87 typedef struct KVMState KVMState;
  88 extern KVMState *kvm_state;
  89
  90 int kvm_ioctl(KVMState *s, int type, ...);
  91
  92 int kvm_vm_ioctl(KVMState *s, int type, ...);
  93
  94 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
  95
  96 /* Arch specific hooks */
  97
  98 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
  99
 100 void kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
 101 void kvm_arch_post_run(CPUState *env, struct kvm_run *run);
 102
 103 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
 104
 105 int kvm_arch_process_async_events(CPUState *env);
 106
 107 int kvm_arch_get_registers(CPUState *env);
 108
 109 /* state subset only touched by the VCPU itself during runtime */
 110 #define KVM_PUT_RUNTIME_STATE   1
 111 /* state subset modified during VCPU reset */
 112 #define KVM_PUT_RESET_STATE     2
 113 /* full state set, modified during initialization or on vmload */
 114 #define KVM_PUT_FULL_STATE      3
 115
 116 int kvm_arch_put_registers(CPUState *env, int level);
 117
 118 int kvm_arch_init(KVMState *s);
 119
 120 int kvm_arch_init_vcpu(CPUState *env);
 121
 122 void kvm_arch_reset_vcpu(CPUState *env);
 123
 124 int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr);
 125 int kvm_arch_on_sigbus(int code, void *addr);
 126
 127 struct kvm_guest_debug;
 128 struct kvm_debug_exit_arch;
 129
 130 struct kvm_sw_breakpoint {
 131     target_ulong pc;
 132     target_ulong saved_insn;
 133     int use_count;
 134     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 135 };
 136
 137 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 138
 139 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 140                                                  target_ulong pc);
 141
 142 int kvm_sw_breakpoints_active(CPUState *env);
 143
 144 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 145                                   struct kvm_sw_breakpoint *bp);
 146 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 147                                   struct kvm_sw_breakpoint *bp);
 148 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 149                                   target_ulong len, int type);
 150 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 151                                   target_ulong len, int type);
 152 void kvm_arch_remove_all_hw_breakpoints(void);
 153
 154 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 155
 156 bool kvm_arch_stop_on_emulation_error(CPUState *env);
 157
 158 int kvm_check_extension(KVMState *s, unsigned int extension);
 159
 160 uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
 161                                       uint32_t index, int reg);
 162 void kvm_cpu_synchronize_state(CPUState *env);
 163 void kvm_cpu_synchronize_post_reset(CPUState *env);
 164 void kvm_cpu_synchronize_post_init(CPUState *env);
 165
 166 /* generic hooks - to be moved/refactored once there are more users */
 167
 168 static inline void cpu_synchronize_state(CPUState *env)
 169 {
 170     if (kvm_enabled()) {
 171         kvm_cpu_synchronize_state(env);
 172     }
 173 }
 174
 175 static inline void cpu_synchronize_post_reset(CPUState *env)
 176 {
 177     if (kvm_enabled()) {
 178         kvm_cpu_synchronize_post_reset(env);
 179     }
 180 }
 181
 182 static inline void cpu_synchronize_post_init(CPUState *env)
 183 {
 184     if (kvm_enabled()) {
 185         kvm_cpu_synchronize_post_init(env);
 186     }
 187 }
 188
 189
 190 #if !defined(CONFIG_USER_ONLY)
 191 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
 192                                        target_phys_addr_t *phys_addr);
 193 #endif
 194
 195 #endif
 196 int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign);
 197
 198 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 199 #endif