allow changing the speed of a running migration
[qemu-kvm/fedora.git] / kvm.h
blob4cf754962a9d86c45dfaf736fa54ba984e94710b
1 /*
2 * QEMU KVM support
4 * Copyright IBM, Corp. 2008
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
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.
14 #ifndef QEMU_KVM_H
15 #define QEMU_KVM_H
17 #include "config.h"
18 #include "sys-queue.h"
20 #ifdef CONFIG_KVM
21 extern int kvm_allowed;
23 #define kvm_enabled() (kvm_allowed)
24 #else
25 #define kvm_enabled() (0)
26 #endif
28 struct kvm_run;
30 /* external API */
32 int kvm_init(int smp_cpus);
34 int kvm_init_vcpu(CPUState *env);
35 int kvm_sync_vcpus(void);
37 int kvm_cpu_exec(CPUState *env);
39 void kvm_set_phys_mem(target_phys_addr_t start_addr,
40 ram_addr_t size,
41 ram_addr_t phys_offset);
43 void kvm_physical_sync_dirty_bitmap(target_phys_addr_t start_addr,
44 target_phys_addr_t end_addr);
46 int kvm_log_start(target_phys_addr_t phys_addr, ram_addr_t size);
47 int kvm_log_stop(target_phys_addr_t phys_addr, ram_addr_t size);
49 int kvm_has_sync_mmu(void);
51 void kvm_setup_guest_memory(void *start, size_t size);
53 int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
54 int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
56 int kvm_insert_breakpoint(CPUState *current_env, target_ulong addr,
57 target_ulong len, int type);
58 int kvm_remove_breakpoint(CPUState *current_env, target_ulong addr,
59 target_ulong len, int type);
60 void kvm_remove_all_breakpoints(CPUState *current_env);
61 int kvm_update_guest_debug(CPUState *env, unsigned long reinject_trap);
63 /* internal API */
65 struct KVMState;
66 typedef struct KVMState KVMState;
68 int kvm_ioctl(KVMState *s, int type, ...);
70 int kvm_vm_ioctl(KVMState *s, int type, ...);
72 int kvm_vcpu_ioctl(CPUState *env, int type, ...);
74 /* Arch specific hooks */
76 int kvm_arch_post_run(CPUState *env, struct kvm_run *run);
78 int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run);
80 int kvm_arch_pre_run(CPUState *env, struct kvm_run *run);
82 int kvm_arch_get_registers(CPUState *env);
84 int kvm_arch_put_registers(CPUState *env);
86 int kvm_arch_init(KVMState *s, int smp_cpus);
88 int kvm_arch_init_vcpu(CPUState *env);
90 struct kvm_guest_debug;
91 struct kvm_debug_exit_arch;
93 struct kvm_sw_breakpoint {
94 target_ulong pc;
95 target_ulong saved_insn;
96 int use_count;
97 TAILQ_ENTRY(kvm_sw_breakpoint) entry;
100 TAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
102 int kvm_arch_debug(struct kvm_debug_exit_arch *arch_info);
104 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUState *env,
105 target_ulong pc);
107 int kvm_sw_breakpoints_active(CPUState *env);
109 int kvm_arch_insert_sw_breakpoint(CPUState *current_env,
110 struct kvm_sw_breakpoint *bp);
111 int kvm_arch_remove_sw_breakpoint(CPUState *current_env,
112 struct kvm_sw_breakpoint *bp);
113 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
114 target_ulong len, int type);
115 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
116 target_ulong len, int type);
117 void kvm_arch_remove_all_hw_breakpoints(void);
119 void kvm_arch_update_guest_debug(CPUState *env, struct kvm_guest_debug *dbg);
121 int kvm_check_extension(KVMState *s, unsigned int extension);
123 uint32_t kvm_arch_get_supported_cpuid(CPUState *env, uint32_t function,
124 int reg);
126 /* generic hooks - to be moved/refactored once there are more users */
128 static inline void cpu_synchronize_state(CPUState *env, int modified)
130 if (kvm_enabled()) {
131 if (modified)
132 kvm_arch_put_registers(env);
133 else
134 kvm_arch_get_registers(env);
138 #endif