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 struct kvm_lapic_state;
  35
  36 typedef struct KVMCapabilityInfo {
  37     const char *name;
  38     int value;
  39 } KVMCapabilityInfo;
  40
  41 #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
  42 #define KVM_CAP_LAST_INFO { NULL, 0 }
  43
  44 /* external API */
  45
  46 int kvm_init(void);
  47
  48 int kvm_has_sync_mmu(void);
  49 int kvm_has_vcpu_events(void);
  50 int kvm_has_robust_singlestep(void);
  51 int kvm_has_debugregs(void);
  52 int kvm_has_xsave(void);
  53 int kvm_has_xcrs(void);
  54 int kvm_has_many_ioeventfds(void);
  55 int kvm_has_gsi_routing(void);
  56
  57 int kvm_allows_irq0_override(void);
  58
  59 #ifdef NEED_CPU_H
  60 int kvm_init_vcpu(CPUState *env);
  61
  62 int kvm_cpu_exec(CPUState *env);
  63
  64 #if !defined(CONFIG_USER_ONLY)
  65 void kvm_setup_guest_memory(void *start, size_t size);
  66
  67 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  68 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
  69 void kvm_flush_coalesced_mmio_buffer(void);
  70 #endif
  71
  72 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
  73                           target_ulong len, int type);
  74 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
  75                           target_ulong len, int type);
  76 void kvm_remove_all_breakpoints(CPUState *current_env);
  77 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
  78 #ifndef _WIN32
  79 int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
  80 #endif
  81
  82 int kvm_pit_in_kernel(void);
  83 int kvm_irqchip_in_kernel(void);
  84
  85 int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
  86 int kvm_on_sigbus(int code, void *addr);
  87
  88 /* internal API */
  89
  90 struct KVMState;
  91 typedef struct KVMState KVMState;
  92 extern KVMState *kvm_state;
  93
  94 int kvm_ioctl(KVMState *s, int type, ...);
  95
  96 int kvm_vm_ioctl(KVMState *s, int type, ...);
  97
  98 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
  99
 100 /* Arch specific hooks */
 101
 102 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
 103
 104 void kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
 105 void kvm_arch_post_run(CPUState *env, struct kvm_run *run);
 106
 107 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
 108
 109 int kvm_arch_process_async_events(CPUState *env);
 110
 111 int kvm_arch_get_registers(CPUState *env);
 112
 113 /* state subset only touched by the VCPU itself during runtime */
 114 #define KVM_PUT_RUNTIME_STATE   1
 115 /* state subset modified during VCPU reset */
 116 #define KVM_PUT_RESET_STATE     2
 117 /* full state set, modified during initialization or on vmload */
 118 #define KVM_PUT_FULL_STATE      3
 119
 120 int kvm_arch_put_registers(CPUState *env, int level);
 121
 122 int kvm_arch_init(KVMState *s);
 123
 124 int kvm_arch_init_vcpu(CPUState *env);
 125
 126 void kvm_arch_reset_vcpu(CPUState *env);
 127
 128 int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr);
 129 int kvm_arch_on_sigbus(int code, void *addr);
 130
 131 void kvm_arch_init_irq_routing(KVMState *s);
 132
 133 int kvm_irqchip_set_irq(KVMState *s, int irq, int level);
 134
 135 void kvm_irqchip_add_route(KVMState *s, int gsi, int irqchip, int pin);
 136 int kvm_irqchip_commit_routes(KVMState *s);
 137
 138 void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
 139 void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
 140
 141 struct kvm_guest_debug;
 142 struct kvm_debug_exit_arch;
 143
 144 struct kvm_sw_breakpoint {
 145     target_ulong pc;
 146     target_ulong saved_insn;
 147     int use_count;
 148     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
 149 };
 150
 151 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
 152
 153 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
 154                                                  target_ulong pc);
 155
 156 int kvm_sw_breakpoints_active(CPUState *env);
 157
 158 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
 159                                   struct kvm_sw_breakpoint *bp);
 160 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
 161                                   struct kvm_sw_breakpoint *bp);
 162 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
 163                                   target_ulong len, int type);
 164 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
 165                                   target_ulong len, int type);
 166 void kvm_arch_remove_all_hw_breakpoints(void);
 167
 168 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
 169
 170 bool kvm_arch_stop_on_emulation_error(CPUState *env);
 171
 172 int kvm_check_extension(KVMState *s, unsigned int extension);
 173
 174 uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
 175                                       uint32_t index, int reg);
 176 void kvm_cpu_synchronize_state(CPUState *env);
 177 void kvm_cpu_synchronize_post_reset(CPUState *env);
 178 void kvm_cpu_synchronize_post_init(CPUState *env);
 179
 180 /* generic hooks - to be moved/refactored once there are more users */
 181
 182 static inline void cpu_synchronize_state(CPUState *env)
 183 {
 184     if (kvm_enabled()) {
 185         kvm_cpu_synchronize_state(env);
 186     }
 187 }
 188
 189 static inline void cpu_synchronize_post_reset(CPUState *env)
 190 {
 191     if (kvm_enabled()) {
 192         kvm_cpu_synchronize_post_reset(env);
 193     }
 194 }
 195
 196 static inline void cpu_synchronize_post_init(CPUState *env)
 197 {
 198     if (kvm_enabled()) {
 199         kvm_cpu_synchronize_post_init(env);
 200     }
 201 }
 202
 203
 204 #if !defined(CONFIG_USER_ONLY)
 205 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
 206                                        target_phys_addr_t *phys_addr);
 207 #endif
 208
 209 #endif
 210 int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign);
 211
 212 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
 213 #endif