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      1 /*
      2  * QEMU KVM support
      3  *
      4  * Copyright IBM, Corp. 2008
      5  *
      6  * Authors:
      7  *  Anthony Liguori   <aliguori (at) 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 
     22 #ifdef TARGET_I386
     23 extern int kvm_allowed;
     24 
     25 #define kvm_enabled() (kvm_allowed)
     26 #else
     27 #define kvm_enabled() (0)
     28 #endif
     29 
     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_init_vcpu(CPUState *env);
     41 int kvm_sync_vcpus(void);
     42 
     43 int kvm_cpu_exec(CPUState *env);
     44 
     45 void kvm_set_phys_mem(target_phys_addr_t start_addr,
     46                       ram_addr_t size,
     47                       ram_addr_t phys_offset);
     48 
     49 int kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
     50                                    target_phys_addr_t end_addr);
     51 
     52 int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
     53 int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
     54 int kvm_set_migration_log(int enable);
     55 
     56 int kvm_has_sync_mmu(void);
     57 
     58 void kvm_setup_guest_memory(void *start, size_t size);
     59 
     60 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
     61 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
     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 
     70 /* internal API */
     71 
     72 struct KVMState;
     73 typedef struct KVMState KVMState;
     74 
     75 int kvm_ioctl(KVMState *s, int type, ...);
     76 
     77 int kvm_vm_ioctl(KVMState *s, int type, ...);
     78 
     79 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
     80 
     81 int kvm_get_mp_state(CPUState *env);
     82 int kvm_put_mp_state(CPUState *env);
     83 
     84 /* Arch specific hooks */
     85 
     86 int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
     87 
     88 int kvm_arch_vcpu_run(CPUState *env);
     89 
     90 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
     91 
     92 int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
     93 
     94 int kvm_arch_get_registers(CPUState *env);
     95 
     96 int kvm_arch_put_registers(CPUState *env);
     97 
     98 int kvm_arch_init(KVMState *s, int smp_cpus);
     99 
    100 int kvm_arch_init_vcpu(CPUState *env);
    101 
    102 struct kvm_guest_debug;
    103 struct kvm_debug_exit_arch;
    104 
    105 struct kvm_sw_breakpoint {
    106     target_ulong pc;
    107     target_ulong saved_insn;
    108     int use_count;
    109     QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
    110 };
    111 
    112 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
    113 
    114 int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
    115 
    116 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
    117                                                  target_ulong pc);
    118 
    119 int kvm_sw_breakpoints_active(CPUState *env);
    120 
    121 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
    122                                   struct kvm_sw_breakpoint *bp);
    123 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
    124                                   struct kvm_sw_breakpoint *bp);
    125 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
    126                                   target_ulong len, int type);
    127 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
    128                                   target_ulong len, int type);
    129 void kvm_arch_remove_all_hw_breakpoints(void);
    130 
    131 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
    132 
    133 int kvm_check_extension(KVMState *s, unsigned int extension);
    134 
    135 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
    136                                       int reg);
    137 
    138 /* generic hooks - to be moved/refactored once there are more users */
    139 #ifdef CONFIG_HAX
    140 void hax_vcpu_sync_state(CPUState *env, int modified);
    141 #endif
    142 static inline void cpu_synchronize_state(CPUState *env, int modified)
    143 {
    144     if (kvm_enabled()) {
    145         if (modified)
    146             kvm_arch_put_registers(env);
    147         else
    148             kvm_arch_get_registers(env);
    149     }
    150 #ifdef CONFIG_HAX
    151     hax_vcpu_sync_state(env, modified);
    152 #endif
    153 }
    154 
    155 int kvm_get_sregs(CPUState *env);
    156 
    157 
    158 #endif
    159