block: bdrv_img_create(): drop unused error handling code
[qemu/ar7.git] / kvm.h
blob72d866a9668a18bc4e2f08fb0602478d73ccf2e1
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 <errno.h>
18 #include "config-host.h"
19 #include "qemu-queue.h"
21 #ifdef CONFIG_KVM
22 #include <linux/kvm.h>
23 #include <linux/kvm_para.h>
24 #endif
26 extern int kvm_allowed;
27 extern bool kvm_kernel_irqchip;
28 extern bool kvm_async_interrupts_allowed;
29 extern bool kvm_irqfds_allowed;
30 extern bool kvm_msi_via_irqfd_allowed;
31 extern bool kvm_gsi_routing_allowed;
33 #if defined CONFIG_KVM || !defined NEED_CPU_H
34 #define kvm_enabled() (kvm_allowed)
35 /**
36 * kvm_irqchip_in_kernel:
38 * Returns: true if the user asked us to create an in-kernel
39 * irqchip via the "kernel_irqchip=on" machine option.
40 * What this actually means is architecture and machine model
41 * specific: on PC, for instance, it means that the LAPIC,
42 * IOAPIC and PIT are all in kernel. This function should never
43 * be used from generic target-independent code: use one of the
44 * following functions or some other specific check instead.
46 #define kvm_irqchip_in_kernel() (kvm_kernel_irqchip)
48 /**
49 * kvm_async_interrupts_enabled:
51 * Returns: true if we can deliver interrupts to KVM
52 * asynchronously (ie by ioctl from any thread at any time)
53 * rather than having to do interrupt delivery synchronously
54 * (where the vcpu must be stopped at a suitable point first).
56 #define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed)
58 /**
59 * kvm_irqfds_enabled:
61 * Returns: true if we can use irqfds to inject interrupts into
62 * a KVM CPU (ie the kernel supports irqfds and we are running
63 * with a configuration where it is meaningful to use them).
65 #define kvm_irqfds_enabled() (kvm_irqfds_allowed)
67 /**
68 * kvm_msi_via_irqfd_enabled:
70 * Returns: true if we can route a PCI MSI (Message Signaled Interrupt)
71 * to a KVM CPU via an irqfd. This requires that the kernel supports
72 * this and that we're running in a configuration that permits it.
74 #define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed)
76 /**
77 * kvm_gsi_routing_enabled:
79 * Returns: true if GSI routing is enabled (ie the kernel supports
80 * it and we're running in a configuration that permits it).
82 #define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed)
84 #else
85 #define kvm_enabled() (0)
86 #define kvm_irqchip_in_kernel() (false)
87 #define kvm_async_interrupts_enabled() (false)
88 #define kvm_irqfds_enabled() (false)
89 #define kvm_msi_via_irqfd_enabled() (false)
90 #define kvm_gsi_routing_allowed() (false)
91 #endif
93 struct kvm_run;
94 struct kvm_lapic_state;
96 typedef struct KVMCapabilityInfo {
97 const char *name;
98 int value;
99 } KVMCapabilityInfo;
101 #define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
102 #define KVM_CAP_LAST_INFO { NULL, 0 }
104 struct KVMState;
105 typedef struct KVMState KVMState;
106 extern KVMState *kvm_state;
108 /* external API */
110 int kvm_init(void);
112 int kvm_has_sync_mmu(void);
113 int kvm_has_vcpu_events(void);
114 int kvm_has_robust_singlestep(void);
115 int kvm_has_debugregs(void);
116 int kvm_has_xsave(void);
117 int kvm_has_xcrs(void);
118 int kvm_has_pit_state2(void);
119 int kvm_has_many_ioeventfds(void);
120 int kvm_has_gsi_routing(void);
121 int kvm_has_intx_set_mask(void);
123 #ifdef NEED_CPU_H
124 int kvm_init_vcpu(CPUArchState *env);
126 int kvm_cpu_exec(CPUArchState *env);
128 #if !defined(CONFIG_USER_ONLY)
129 void *kvm_vmalloc(ram_addr_t size);
130 void *kvm_arch_vmalloc(ram_addr_t size);
131 void kvm_setup_guest_memory(void *start, size_t size);
133 void kvm_flush_coalesced_mmio_buffer(void);
134 #endif
136 int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
137 target_ulong len, int type);
138 int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
139 target_ulong len, int type);
140 void kvm_remove_all_breakpoints(CPUArchState *current_env);
141 int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap);
142 #ifndef _WIN32
143 int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset);
144 #endif
146 int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
147 int kvm_on_sigbus(int code, void *addr);
149 /* internal API */
151 int kvm_ioctl(KVMState *s, int type, ...);
153 int kvm_vm_ioctl(KVMState *s, int type, ...);
155 int kvm_vcpu_ioctl(CPUArchState *env, int type, ...);
157 /* Arch specific hooks */
159 extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
161 void kvm_arch_pre_run(CPUArchState *env, struct kvm_run *run);
162 void kvm_arch_post_run(CPUArchState *env, struct kvm_run *run);
164 int kvm_arch_handle_exit(CPUArchState *env, struct kvm_run *run);
166 int kvm_arch_process_async_events(CPUArchState *env);
168 int kvm_arch_get_registers(CPUArchState *env);
170 /* state subset only touched by the VCPU itself during runtime */
171 #define KVM_PUT_RUNTIME_STATE 1
172 /* state subset modified during VCPU reset */
173 #define KVM_PUT_RESET_STATE 2
174 /* full state set, modified during initialization or on vmload */
175 #define KVM_PUT_FULL_STATE 3
177 int kvm_arch_put_registers(CPUArchState *env, int level);
179 int kvm_arch_init(KVMState *s);
181 int kvm_arch_init_vcpu(CPUArchState *env);
183 void kvm_arch_reset_vcpu(CPUArchState *env);
185 int kvm_arch_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
186 int kvm_arch_on_sigbus(int code, void *addr);
188 void kvm_arch_init_irq_routing(KVMState *s);
190 int kvm_set_irq(KVMState *s, int irq, int level);
191 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
193 void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin);
195 void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
196 void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
198 struct kvm_guest_debug;
199 struct kvm_debug_exit_arch;
201 struct kvm_sw_breakpoint {
202 target_ulong pc;
203 target_ulong saved_insn;
204 int use_count;
205 QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
208 QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
210 struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env,
211 target_ulong pc);
213 int kvm_sw_breakpoints_active(CPUArchState *env);
215 int kvm_arch_insert_sw_breakpoint(CPUArchState *current_env,
216 struct kvm_sw_breakpoint *bp);
217 int kvm_arch_remove_sw_breakpoint(CPUArchState *current_env,
218 struct kvm_sw_breakpoint *bp);
219 int kvm_arch_insert_hw_breakpoint(target_ulong addr,
220 target_ulong len, int type);
221 int kvm_arch_remove_hw_breakpoint(target_ulong addr,
222 target_ulong len, int type);
223 void kvm_arch_remove_all_hw_breakpoints(void);
225 void kvm_arch_update_guest_debug(CPUArchState *env, struct kvm_guest_debug *dbg);
227 bool kvm_arch_stop_on_emulation_error(CPUArchState *env);
229 int kvm_check_extension(KVMState *s, unsigned int extension);
231 uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
232 uint32_t index, int reg);
233 void kvm_cpu_synchronize_state(CPUArchState *env);
234 void kvm_cpu_synchronize_post_reset(CPUArchState *env);
235 void kvm_cpu_synchronize_post_init(CPUArchState *env);
237 /* generic hooks - to be moved/refactored once there are more users */
239 static inline void cpu_synchronize_state(CPUArchState *env)
241 if (kvm_enabled()) {
242 kvm_cpu_synchronize_state(env);
246 static inline void cpu_synchronize_post_reset(CPUArchState *env)
248 if (kvm_enabled()) {
249 kvm_cpu_synchronize_post_reset(env);
253 static inline void cpu_synchronize_post_init(CPUArchState *env)
255 if (kvm_enabled()) {
256 kvm_cpu_synchronize_post_init(env);
261 #if !defined(CONFIG_USER_ONLY)
262 int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
263 hwaddr *phys_addr);
264 #endif
266 #endif
267 int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign,
268 uint32_t size);
270 int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
272 int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg);
273 int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg);
274 void kvm_irqchip_release_virq(KVMState *s, int virq);
276 int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);
277 int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);
278 void kvm_pc_gsi_handler(void *opaque, int n, int level);
279 void kvm_pc_setup_irq_routing(bool pci_enabled);
280 #endif