KVM: switch pit creation to slots_lock
[linux-block.git] / include / linux / kvm_host.h
CommitLineData
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1#ifndef __KVM_HOST_H
2#define __KVM_HOST_H
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3
4/*
5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
7 */
8
9#include <linux/types.h>
e56a7a28 10#include <linux/hardirq.h>
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11#include <linux/list.h>
12#include <linux/mutex.h>
13#include <linux/spinlock.h>
06ff0d37
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14#include <linux/signal.h>
15#include <linux/sched.h>
6aa8b732 16#include <linux/mm.h>
15ad7146 17#include <linux/preempt.h>
d4c9ff2d 18#include <linux/marker.h>
0937c48d 19#include <linux/msi.h>
e8edc6e0 20#include <asm/signal.h>
6aa8b732 21
6aa8b732 22#include <linux/kvm.h>
102d8325 23#include <linux/kvm_para.h>
6aa8b732 24
edf88417 25#include <linux/kvm_types.h>
d77a39d9 26
edf88417 27#include <asm/kvm_host.h>
d657a98e 28
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29/*
30 * vcpu->requests bit members
31 */
3176bc3e 32#define KVM_REQ_TLB_FLUSH 0
2f52d58c 33#define KVM_REQ_MIGRATE_TIMER 1
b209749f 34#define KVM_REQ_REPORT_TPR_ACCESS 2
2e53d63a 35#define KVM_REQ_MMU_RELOAD 3
71c4dfaf 36#define KVM_REQ_TRIPLE_FAULT 4
06e05645 37#define KVM_REQ_PENDING_TIMER 5
d7690175 38#define KVM_REQ_UNHALT 6
4731d4c7 39#define KVM_REQ_MMU_SYNC 7
c8076604 40#define KVM_REQ_KVMCLOCK_UPDATE 8
32f88400 41#define KVM_REQ_KICK 9
6aa8b732 42
5550af4d
SY
43#define KVM_USERSPACE_IRQ_SOURCE_ID 0
44
6aa8b732 45struct kvm_vcpu;
c16f862d 46extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732 47
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GH
48/*
49 * It would be nice to use something smarter than a linear search, TBD...
50 * Thankfully we dont expect many devices to register (famous last words :),
51 * so until then it will suffice. At least its abstracted so we can change
52 * in one place.
53 */
54struct kvm_io_bus {
55 int dev_count;
56#define NR_IOBUS_DEVS 6
57 struct kvm_io_device *devs[NR_IOBUS_DEVS];
58};
59
60void kvm_io_bus_init(struct kvm_io_bus *bus);
61void kvm_io_bus_destroy(struct kvm_io_bus *bus);
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62struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus,
63 gpa_t addr, int len, int is_write);
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64void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
65 struct kvm_io_device *dev);
66
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67struct kvm_vcpu {
68 struct kvm *kvm;
31bb117e 69#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7 70 struct preempt_notifier preempt_notifier;
31bb117e 71#endif
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72 int vcpu_id;
73 struct mutex mutex;
74 int cpu;
75 struct kvm_run *run;
d17fbbf7 76 unsigned long requests;
d0bfb940 77 unsigned long guest_debug;
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78 int fpu_active;
79 int guest_fpu_loaded;
80 wait_queue_head_t wq;
81 int sigset_active;
82 sigset_t sigset;
83 struct kvm_vcpu_stat stat;
84
34c16eec 85#ifdef CONFIG_HAS_IOMEM
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86 int mmio_needed;
87 int mmio_read_completed;
88 int mmio_is_write;
89 int mmio_size;
90 unsigned char mmio_data[8];
6aa8b732 91 gpa_t mmio_phys_addr;
34c16eec 92#endif
1165f5fe 93
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94 struct kvm_vcpu_arch arch;
95};
96
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97struct kvm_memory_slot {
98 gfn_t base_gfn;
99 unsigned long npages;
100 unsigned long flags;
290fc38d 101 unsigned long *rmap;
6aa8b732 102 unsigned long *dirty_bitmap;
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103 struct {
104 unsigned long rmap_pde;
105 int write_count;
ec04b260 106 } *lpage_info[KVM_NR_PAGE_SIZES - 1];
8a7ae055 107 unsigned long userspace_addr;
80b14b5b 108 int user_alloc;
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109};
110
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111struct kvm_kernel_irq_routing_entry {
112 u32 gsi;
5116d8f6 113 u32 type;
4925663a 114 int (*set)(struct kvm_kernel_irq_routing_entry *e,
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115 struct kvm *kvm, int level);
116 union {
117 struct {
118 unsigned irqchip;
119 unsigned pin;
120 } irqchip;
79950e10 121 struct msi_msg msi;
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122 };
123 struct list_head link;
124};
125
6aa8b732 126struct kvm {
aaee2c94 127 spinlock_t mmu_lock;
84261923 128 spinlock_t requests_lock;
72dc67a6 129 struct rw_semaphore slots_lock;
6d4e4c4f 130 struct mm_struct *mm; /* userspace tied to this vm */
6aa8b732 131 int nmemslots;
e0d62c7f
IE
132 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
133 KVM_PRIVATE_MEM_SLOTS];
73880c80
GN
134#ifdef CONFIG_KVM_APIC_ARCHITECTURE
135 u32 bsp_vcpu_id;
c5af89b6 136 struct kvm_vcpu *bsp_vcpu;
73880c80 137#endif
fb3f0f51 138 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
73880c80 139 atomic_t online_vcpus;
133de902 140 struct list_head vm_list;
60eead79 141 struct mutex lock;
2eeb2e94 142 struct kvm_io_bus mmio_bus;
74906345 143 struct kvm_io_bus pio_bus;
721eecbf
GH
144#ifdef CONFIG_HAVE_KVM_EVENTFD
145 struct {
146 spinlock_t lock;
147 struct list_head items;
148 } irqfds;
149#endif
ba1389b7 150 struct kvm_vm_stat stat;
d69fb81f 151 struct kvm_arch arch;
d39f13b0 152 atomic_t users_count;
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153#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
154 struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
155 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
156#endif
e930bffe 157
60eead79 158 struct mutex irq_lock;
75858a84 159#ifdef CONFIG_HAVE_KVM_IRQCHIP
399ec807 160 struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
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161 struct hlist_head mask_notifier_list;
162#endif
163
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164#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
165 struct mmu_notifier mmu_notifier;
166 unsigned long mmu_notifier_seq;
167 long mmu_notifier_count;
168#endif
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169};
170
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171/* The guest did something we don't support. */
172#define pr_unimpl(vcpu, fmt, ...) \
173 do { \
174 if (printk_ratelimit()) \
175 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
176 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc 177 } while (0)
f0242478 178
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179#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
180#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
181
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GN
182static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
183{
184 smp_rmb();
185 return kvm->vcpus[i];
186}
187
188#define kvm_for_each_vcpu(idx, vcpup, kvm) \
189 for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
190 idx < atomic_read(&kvm->online_vcpus) && vcpup; \
191 vcpup = kvm_get_vcpu(kvm, ++idx))
192
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193int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
194void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
195
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196void vcpu_load(struct kvm_vcpu *vcpu);
197void vcpu_put(struct kvm_vcpu *vcpu);
198
f8c16bba 199int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d 200 struct module *module);
cb498ea2 201void kvm_exit(void);
6aa8b732 202
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203void kvm_get_kvm(struct kvm *kvm);
204void kvm_put_kvm(struct kvm *kvm);
205
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206#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
207#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
208static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0 209struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
6aa8b732 210
cea7bb21 211extern struct page *bad_page;
35149e21 212extern pfn_t bad_pfn;
6aa8b732 213
cea7bb21 214int is_error_page(struct page *page);
35149e21 215int is_error_pfn(pfn_t pfn);
f9d46eb0 216int kvm_is_error_hva(unsigned long addr);
210c7c4d
IE
217int kvm_set_memory_region(struct kvm *kvm,
218 struct kvm_userspace_memory_region *mem,
219 int user_alloc);
f78e0e2e
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220int __kvm_set_memory_region(struct kvm *kvm,
221 struct kvm_userspace_memory_region *mem,
222 int user_alloc);
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223int kvm_arch_set_memory_region(struct kvm *kvm,
224 struct kvm_userspace_memory_region *mem,
225 struct kvm_memory_slot old,
226 int user_alloc);
54dee993 227void kvm_disable_largepages(void);
34d4cb8f 228void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d 229gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2 230struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
05da4558 231unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61
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232void kvm_release_page_clean(struct page *page);
233void kvm_release_page_dirty(struct page *page);
35149e21
AL
234void kvm_set_page_dirty(struct page *page);
235void kvm_set_page_accessed(struct page *page);
236
237pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
238void kvm_release_pfn_dirty(pfn_t);
239void kvm_release_pfn_clean(pfn_t pfn);
240void kvm_set_pfn_dirty(pfn_t pfn);
241void kvm_set_pfn_accessed(pfn_t pfn);
242void kvm_get_pfn(pfn_t pfn);
243
195aefde
IE
244int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
245 int len);
7ec54588
MT
246int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
247 unsigned long len);
195aefde
IE
248int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
249int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
250 int offset, int len);
251int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
252 unsigned long len);
253int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
254int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732 255struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
e0d62c7f 256int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
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257void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
258
8776e519 259void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732 260void kvm_resched(struct kvm_vcpu *vcpu);
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261void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
262void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6 263void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a 264void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732 265
043405e1
CO
266long kvm_arch_dev_ioctl(struct file *filp,
267 unsigned int ioctl, unsigned long arg);
313a3dc7
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268long kvm_arch_vcpu_ioctl(struct file *filp,
269 unsigned int ioctl, unsigned long arg);
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270
271int kvm_dev_ioctl_check_extension(long ext);
272
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273int kvm_get_dirty_log(struct kvm *kvm,
274 struct kvm_dirty_log *log, int *is_dirty);
275int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
276 struct kvm_dirty_log *log);
277
1fe779f8
CO
278int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
279 struct
280 kvm_userspace_memory_region *mem,
281 int user_alloc);
282long kvm_arch_vm_ioctl(struct file *filp,
283 unsigned int ioctl, unsigned long arg);
313a3dc7 284
d0752060
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285int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
286int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
287
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288int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
289 struct kvm_translation *tr);
290
b6c7a5dc
HB
291int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
292int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
293int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
294 struct kvm_sregs *sregs);
295int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
296 struct kvm_sregs *sregs);
62d9f0db
MT
297int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
298 struct kvm_mp_state *mp_state);
299int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
300 struct kvm_mp_state *mp_state);
d0bfb940
JK
301int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
302 struct kvm_guest_debug *dbg);
b6c7a5dc
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303int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
304
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305int kvm_arch_init(void *opaque);
306void kvm_arch_exit(void);
043405e1 307
e9b11c17
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308int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
309void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
310
311void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
312void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
313void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
314struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
26e5215f 315int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62 316void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17
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317
318int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
319void kvm_arch_hardware_enable(void *garbage);
320void kvm_arch_hardware_disable(void *garbage);
321int kvm_arch_hardware_setup(void);
322void kvm_arch_hardware_unsetup(void);
323void kvm_arch_check_processor_compat(void *rtn);
1d737c8a 324int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
78646121 325int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
e9b11c17 326
d19a9cd2
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327void kvm_free_physmem(struct kvm *kvm);
328
329struct kvm *kvm_arch_create_vm(void);
330void kvm_arch_destroy_vm(struct kvm *kvm);
8a98f664 331void kvm_free_all_assigned_devices(struct kvm *kvm);
ad8ba2cd 332void kvm_arch_sync_events(struct kvm *kvm);
e9b11c17 333
682c59a3
ZX
334int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
335int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d 336int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a 337void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3 338
c77fb9dc
XZ
339int kvm_is_mmio_pfn(pfn_t pfn);
340
62c476c7
BAY
341struct kvm_irq_ack_notifier {
342 struct hlist_node link;
343 unsigned gsi;
344 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
345};
346
2350bd1f 347#define KVM_ASSIGNED_MSIX_PENDING 0x1
c1e01514
SY
348struct kvm_guest_msix_entry {
349 u32 vector;
350 u16 entry;
351 u16 flags;
352};
353
62c476c7
BAY
354struct kvm_assigned_dev_kernel {
355 struct kvm_irq_ack_notifier ack_notifier;
356 struct work_struct interrupt_work;
357 struct list_head list;
358 int assigned_dev_id;
359 int host_busnr;
360 int host_devfn;
c1e01514 361 unsigned int entries_nr;
62c476c7 362 int host_irq;
defaf158 363 bool host_irq_disabled;
c1e01514 364 struct msix_entry *host_msix_entries;
62c476c7 365 int guest_irq;
c1e01514 366 struct kvm_guest_msix_entry *guest_msix_entries;
4f906c19 367 unsigned long irq_requested_type;
5550af4d 368 int irq_source_id;
b653574a 369 int flags;
62c476c7
BAY
370 struct pci_dev *dev;
371 struct kvm *kvm;
547de29e 372 spinlock_t assigned_dev_lock;
62c476c7 373};
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374
375struct kvm_irq_mask_notifier {
376 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
377 int irq;
378 struct hlist_node link;
379};
380
381void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
382 struct kvm_irq_mask_notifier *kimn);
383void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
384 struct kvm_irq_mask_notifier *kimn);
385void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
386
4925663a 387int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
44882eed 388void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
3de42dc0
XZ
389void kvm_register_irq_ack_notifier(struct kvm *kvm,
390 struct kvm_irq_ack_notifier *kian);
fa40a821
MT
391void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
392 struct kvm_irq_ack_notifier *kian);
5550af4d
SY
393int kvm_request_irq_source_id(struct kvm *kvm);
394void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7 395
522c68c4
SY
396/* For vcpu->arch.iommu_flags */
397#define KVM_IOMMU_CACHE_COHERENCY 0x1
398
19de40a8 399#ifdef CONFIG_IOMMU_API
62c476c7
BAY
400int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
401 unsigned long npages);
260782bc 402int kvm_iommu_map_guest(struct kvm *kvm);
62c476c7 403int kvm_iommu_unmap_guest(struct kvm *kvm);
260782bc
WH
404int kvm_assign_device(struct kvm *kvm,
405 struct kvm_assigned_dev_kernel *assigned_dev);
0a920356
WH
406int kvm_deassign_device(struct kvm *kvm,
407 struct kvm_assigned_dev_kernel *assigned_dev);
19de40a8 408#else /* CONFIG_IOMMU_API */
62c476c7
BAY
409static inline int kvm_iommu_map_pages(struct kvm *kvm,
410 gfn_t base_gfn,
411 unsigned long npages)
412{
413 return 0;
414}
415
260782bc 416static inline int kvm_iommu_map_guest(struct kvm *kvm)
62c476c7
BAY
417{
418 return -ENODEV;
419}
420
421static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
422{
423 return 0;
424}
260782bc
WH
425
426static inline int kvm_assign_device(struct kvm *kvm,
427 struct kvm_assigned_dev_kernel *assigned_dev)
428{
429 return 0;
430}
0a920356
WH
431
432static inline int kvm_deassign_device(struct kvm *kvm,
433 struct kvm_assigned_dev_kernel *assigned_dev)
434{
435 return 0;
436}
19de40a8 437#endif /* CONFIG_IOMMU_API */
62c476c7 438
d172fcd3
LV
439static inline void kvm_guest_enter(void)
440{
e56a7a28 441 account_system_vtime(current);
d172fcd3
LV
442 current->flags |= PF_VCPU;
443}
444
445static inline void kvm_guest_exit(void)
446{
e56a7a28 447 account_system_vtime(current);
d172fcd3
LV
448 current->flags &= ~PF_VCPU;
449}
450
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451static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
452{
453 return slot - kvm->memslots;
454}
455
1755fbcc
AK
456static inline gpa_t gfn_to_gpa(gfn_t gfn)
457{
458 return (gpa_t)gfn << PAGE_SHIFT;
459}
6aa8b732 460
62c476c7
BAY
461static inline hpa_t pfn_to_hpa(pfn_t pfn)
462{
463 return (hpa_t)pfn << PAGE_SHIFT;
464}
465
2f599714 466static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c
AK
467{
468 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
469}
470
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471enum kvm_stat_kind {
472 KVM_STAT_VM,
473 KVM_STAT_VCPU,
474};
475
417bc304
HB
476struct kvm_stats_debugfs_item {
477 const char *name;
478 int offset;
ba1389b7 479 enum kvm_stat_kind kind;
417bc304
HB
480 struct dentry *dentry;
481};
482extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879 483extern struct dentry *kvm_debugfs_dir;
d4c9ff2d 484
e930bffe
AA
485#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
486static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
487{
488 if (unlikely(vcpu->kvm->mmu_notifier_count))
489 return 1;
490 /*
491 * Both reads happen under the mmu_lock and both values are
492 * modified under mmu_lock, so there's no need of smb_rmb()
493 * here in between, otherwise mmu_notifier_count should be
494 * read before mmu_notifier_seq, see
495 * mmu_notifier_invalidate_range_end write side.
496 */
497 if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
498 return 1;
499 return 0;
500}
501#endif
502
399ec807
AK
503#ifdef CONFIG_HAVE_KVM_IRQCHIP
504
505#define KVM_MAX_IRQ_ROUTES 1024
506
507int kvm_setup_default_irq_routing(struct kvm *kvm);
508int kvm_set_irq_routing(struct kvm *kvm,
509 const struct kvm_irq_routing_entry *entries,
510 unsigned nr,
511 unsigned flags);
512void kvm_free_irq_routing(struct kvm *kvm);
513
514#else
515
516static inline void kvm_free_irq_routing(struct kvm *kvm) {}
517
518#endif
519
721eecbf
GH
520#ifdef CONFIG_HAVE_KVM_EVENTFD
521
522void kvm_irqfd_init(struct kvm *kvm);
523int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
524void kvm_irqfd_release(struct kvm *kvm);
525
526#else
527
528static inline void kvm_irqfd_init(struct kvm *kvm) {}
529static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
530{
531 return -EINVAL;
532}
533
534static inline void kvm_irqfd_release(struct kvm *kvm) {}
535
536#endif /* CONFIG_HAVE_KVM_EVENTFD */
537
73880c80 538#ifdef CONFIG_KVM_APIC_ARCHITECTURE
c5af89b6
GN
539static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
540{
d3efc8ef 541 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
c5af89b6 542}
6aa8b732 543#endif
73880c80 544#endif