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Avi Kivityedf88412007-12-16 11:02:48 +02001#ifndef __KVM_HOST_H
2#define __KVM_HOST_H
Avi Kivity6aa8b732006-12-10 02:21:36 -08003
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>
Christian Borntraegere56a7a22007-10-18 14:39:10 +020010#include <linux/hardirq.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080011#include <linux/list.h>
12#include <linux/mutex.h>
13#include <linux/spinlock.h>
Markus Rechberger06ff0d32007-05-27 10:46:52 +030014#include <linux/signal.h>
15#include <linux/sched.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080016#include <linux/mm.h>
Avi Kivity15ad7142007-07-11 18:17:21 +030017#include <linux/preempt.h>
Feng(Eric) Liud4c9ff22008-04-10 08:47:53 -040018#include <linux/marker.h>
Sheng Yang0937c482008-11-24 14:32:53 +080019#include <linux/msi.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040020#include <asm/signal.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080021
Avi Kivity6aa8b732006-12-10 02:21:36 -080022#include <linux/kvm.h>
Ingo Molnar102d8322007-02-19 14:37:47 +020023#include <linux/kvm_para.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080024
Avi Kivityedf88412007-12-16 11:02:48 +020025#include <linux/kvm_types.h>
Hollis Blanchardd77a39d2007-12-03 15:30:23 -060026
Avi Kivityedf88412007-12-16 11:02:48 +020027#include <asm/kvm_host.h>
Zhang Xiantaod657a982007-12-14 09:41:22 +080028
Avi Kivity6aa8b732006-12-10 02:21:36 -080029/*
Avi Kivityd9e368d2007-06-07 19:18:30 +030030 * vcpu->requests bit members
31 */
Avi Kivity3176bc32007-10-16 17:22:08 +020032#define KVM_REQ_TLB_FLUSH 0
Avi Kivity2f52d582008-01-16 12:49:30 +020033#define KVM_REQ_MIGRATE_TIMER 1
Avi Kivityb209749f2007-10-22 16:50:39 +020034#define KVM_REQ_REPORT_TPR_ACCESS 2
Marcelo Tosatti2e53d632008-02-20 14:47:24 -050035#define KVM_REQ_MMU_RELOAD 3
Joerg Roedel71c4dfa2008-02-26 16:49:16 +010036#define KVM_REQ_TRIPLE_FAULT 4
Marcelo Tosatti06e05642008-06-06 16:37:36 -030037#define KVM_REQ_PENDING_TIMER 5
Marcelo Tosattid7690172008-09-08 15:23:48 -030038#define KVM_REQ_UNHALT 6
Marcelo Tosatti4731d4c2008-09-23 13:18:39 -030039#define KVM_REQ_MMU_SYNC 7
Gerd Hoffmannc8076602009-02-04 17:52:04 +010040#define KVM_REQ_KVMCLOCK_UPDATE 8
Marcelo Tosatti32f88402009-05-07 17:55:12 -030041#define KVM_REQ_KICK 9
Avi Kivity6aa8b732006-12-10 02:21:36 -080042
Sheng Yang5550af42008-10-15 20:15:06 +080043#define KVM_USERSPACE_IRQ_SOURCE_ID 0
44
Avi Kivity6aa8b732006-12-10 02:21:36 -080045struct kvm_vcpu;
Rusty Russellc16f8622007-07-30 21:12:19 +100046extern struct kmem_cache *kvm_vcpu_cache;
Avi Kivity6aa8b732006-12-10 02:21:36 -080047
Gregory Haskins2eeb2e92007-05-31 14:08:53 -040048/*
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);
Laurent Vivier92760492008-05-30 16:05:53 +020062struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus,
63 gpa_t addr, int len, int is_write);
Gregory Haskins2eeb2e92007-05-31 14:08:53 -040064void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
65 struct kvm_io_device *dev);
66
Zhang Xiantaod657a982007-12-14 09:41:22 +080067struct kvm_vcpu {
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080068 struct kvm *kvm;
Hollis Blanchard31bb1172008-01-28 17:42:34 -060069#ifdef CONFIG_PREEMPT_NOTIFIERS
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080070 struct preempt_notifier preempt_notifier;
Hollis Blanchard31bb1172008-01-28 17:42:34 -060071#endif
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080072 int vcpu_id;
73 struct mutex mutex;
74 int cpu;
75 struct kvm_run *run;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080076 unsigned long requests;
Jan Kiszkad0bfb942008-12-15 13:52:10 +010077 unsigned long guest_debug;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080078 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
85#ifdef CONFIG_HAS_IOMEM
86 int mmio_needed;
87 int mmio_read_completed;
88 int mmio_is_write;
89 int mmio_size;
90 unsigned char mmio_data[8];
91 gpa_t mmio_phys_addr;
92#endif
Zhang Xiantaod657a982007-12-14 09:41:22 +080093
94 struct kvm_vcpu_arch arch;
95};
96
Avi Kivity6aa8b732006-12-10 02:21:36 -080097struct kvm_memory_slot {
98 gfn_t base_gfn;
99 unsigned long npages;
100 unsigned long flags;
Izik Eidus290fc382007-09-27 14:11:22 +0200101 unsigned long *rmap;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800102 unsigned long *dirty_bitmap;
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300103 struct {
104 unsigned long rmap_pde;
105 int write_count;
106 } *lpage_info;
Izik Eidus8a7ae052007-10-18 11:09:33 +0200107 unsigned long userspace_addr;
Izik Eidus80b14b52007-10-25 11:54:04 +0200108 int user_alloc;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800109};
110
Avi Kivity399ec802008-11-19 13:58:46 +0200111struct kvm_kernel_irq_routing_entry {
112 u32 gsi;
Gleb Natapov49256632009-02-04 17:28:14 +0200113 int (*set)(struct kvm_kernel_irq_routing_entry *e,
Avi Kivity399ec802008-11-19 13:58:46 +0200114 struct kvm *kvm, int level);
115 union {
116 struct {
117 unsigned irqchip;
118 unsigned pin;
119 } irqchip;
Sheng Yang79950e12009-02-10 13:57:06 +0800120 struct msi_msg msi;
Avi Kivity399ec802008-11-19 13:58:46 +0200121 };
122 struct list_head link;
123};
124
Avi Kivity6aa8b732006-12-10 02:21:36 -0800125struct kvm {
Marcelo Tosattiaaee2c92007-12-20 19:18:26 -0500126 struct mutex lock; /* protects the vcpus array and APIC accesses */
127 spinlock_t mmu_lock;
Marcelo Tosatti84261922009-06-17 10:53:47 -0300128 spinlock_t requests_lock;
Izik Eidus72dc67a2008-02-10 18:04:15 +0200129 struct rw_semaphore slots_lock;
Avi Kivity6d4e4c42007-11-21 16:41:05 +0200130 struct mm_struct *mm; /* userspace tied to this vm */
Avi Kivity6aa8b732006-12-10 02:21:36 -0800131 int nmemslots;
Izik Eiduse0d62c72007-10-24 23:57:46 +0200132 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
133 KVM_PRIVATE_MEM_SLOTS];
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000134 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
Avi Kivity133de902007-02-12 00:54:44 -0800135 struct list_head vm_list;
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400136 struct kvm_io_bus mmio_bus;
Eddie Dong74906342007-06-19 18:05:03 +0300137 struct kvm_io_bus pio_bus;
Avi Kivityba1389b2007-11-18 16:24:12 +0200138 struct kvm_vm_stat stat;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800139 struct kvm_arch arch;
Izik Eidusd39f13b2008-03-30 16:01:25 +0300140 atomic_t users_count;
Laurent Vivier5f94c172008-05-30 16:05:54 +0200141#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
142 struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
143 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
144#endif
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200145
Avi Kivity75858a82009-01-04 17:10:50 +0200146#ifdef CONFIG_HAVE_KVM_IRQCHIP
Avi Kivity399ec802008-11-19 13:58:46 +0200147 struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
Avi Kivity75858a82009-01-04 17:10:50 +0200148 struct hlist_head mask_notifier_list;
149#endif
150
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200151#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
152 struct mmu_notifier mmu_notifier;
153 unsigned long mmu_notifier_seq;
154 long mmu_notifier_count;
155#endif
Avi Kivity6aa8b732006-12-10 02:21:36 -0800156};
157
Rusty Russellf0242472007-08-01 10:48:02 +1000158/* The guest did something we don't support. */
159#define pr_unimpl(vcpu, fmt, ...) \
160 do { \
161 if (printk_ratelimit()) \
162 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
163 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
Mike Dayd77c26f2007-10-08 09:02:08 -0400164 } while (0)
Rusty Russellf0242472007-08-01 10:48:02 +1000165
Avi Kivity6aa8b732006-12-10 02:21:36 -0800166#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
167#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
168
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000169int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
170void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
171
Carsten Otte313a3dc2007-10-11 19:16:52 +0200172void vcpu_load(struct kvm_vcpu *vcpu);
173void vcpu_put(struct kvm_vcpu *vcpu);
174
Zhang Xiantaof8c16bb2007-11-14 20:40:21 +0800175int kvm_init(void *opaque, unsigned int vcpu_size,
Rusty Russellc16f8622007-07-30 21:12:19 +1000176 struct module *module);
Zhang Xiantaocb498ea2007-11-14 20:39:31 +0800177void kvm_exit(void);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800178
Izik Eidusd39f13b2008-03-30 16:01:25 +0300179void kvm_get_kvm(struct kvm *kvm);
180void kvm_put_kvm(struct kvm *kvm);
181
Avi Kivity6aa8b732006-12-10 02:21:36 -0800182#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
183#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
184static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
Avi Kivity039576c2007-03-20 12:46:50 +0200185struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800186
Izik Eiduscea7bb22007-10-17 19:17:48 +0200187extern struct page *bad_page;
Anthony Liguori35149e22008-04-02 14:46:56 -0500188extern pfn_t bad_pfn;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800189
Izik Eiduscea7bb22007-10-17 19:17:48 +0200190int is_error_page(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500191int is_error_pfn(pfn_t pfn);
Izik Eidusf9d46eb2007-11-11 22:02:22 +0200192int kvm_is_error_hva(unsigned long addr);
Izik Eidus210c7c42007-10-24 23:52:57 +0200193int kvm_set_memory_region(struct kvm *kvm,
194 struct kvm_userspace_memory_region *mem,
195 int user_alloc);
Sheng Yangf78e0e22007-10-29 09:40:42 +0800196int __kvm_set_memory_region(struct kvm *kvm,
197 struct kvm_userspace_memory_region *mem,
198 int user_alloc);
Zhang Xiantao0de10342007-11-20 16:25:04 +0800199int kvm_arch_set_memory_region(struct kvm *kvm,
200 struct kvm_userspace_memory_region *mem,
201 struct kvm_memory_slot old,
202 int user_alloc);
Marcelo Tosatti34d4cb82008-07-10 20:49:31 -0300203void kvm_arch_flush_shadow(struct kvm *kvm);
Izik Eidus290fc382007-09-27 14:11:22 +0200204gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
Avi Kivity954bbbc22007-03-30 14:02:32 +0300205struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300206unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
Izik Eidusb4231d62007-11-20 11:49:33 +0200207void kvm_release_page_clean(struct page *page);
208void kvm_release_page_dirty(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500209void kvm_set_page_dirty(struct page *page);
210void kvm_set_page_accessed(struct page *page);
211
212pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
213void kvm_release_pfn_dirty(pfn_t);
214void kvm_release_pfn_clean(pfn_t pfn);
215void kvm_set_pfn_dirty(pfn_t pfn);
216void kvm_set_pfn_accessed(pfn_t pfn);
217void kvm_get_pfn(pfn_t pfn);
218
Izik Eidus195aefd2007-10-01 22:14:18 +0200219int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
220 int len);
Marcelo Tosatti7ec54582007-12-20 19:18:23 -0500221int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
222 unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200223int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
224int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
225 int offset, int len);
226int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
227 unsigned long len);
228int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
229int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800230struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
Izik Eiduse0d62c72007-10-24 23:57:46 +0200231int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800232void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
233
Hollis Blanchard8776e512007-10-31 17:24:24 -0500234void kvm_vcpu_block(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800235void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300236void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
237void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Avi Kivityd9e368d2007-06-07 19:18:30 +0300238void kvm_flush_remote_tlbs(struct kvm *kvm);
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500239void kvm_reload_remote_mmus(struct kvm *kvm);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800240
Carsten Otte043405e2007-10-10 17:16:19 +0200241long kvm_arch_dev_ioctl(struct file *filp,
242 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200243long kvm_arch_vcpu_ioctl(struct file *filp,
244 unsigned int ioctl, unsigned long arg);
245void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
246void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
Zhang Xiantao018d00d2007-11-15 23:07:47 +0800247
248int kvm_dev_ioctl_check_extension(long ext);
249
Zhang Xiantao5bb064d2007-11-18 20:29:43 +0800250int kvm_get_dirty_log(struct kvm *kvm,
251 struct kvm_dirty_log *log, int *is_dirty);
252int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
253 struct kvm_dirty_log *log);
254
Carsten Otte1fe779f2007-10-29 16:08:35 +0100255int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
256 struct
257 kvm_userspace_memory_region *mem,
258 int user_alloc);
259long kvm_arch_vm_ioctl(struct file *filp,
260 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200261
Hollis Blanchardd0752062007-10-31 17:24:25 -0500262int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
263int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
264
Zhang Xiantao8b006792007-11-16 13:05:55 +0800265int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
266 struct kvm_translation *tr);
267
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500268int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
269int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
270int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
271 struct kvm_sregs *sregs);
272int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
273 struct kvm_sregs *sregs);
Marcelo Tosatti62d9f0d2008-04-11 13:24:45 -0300274int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
275 struct kvm_mp_state *mp_state);
276int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
277 struct kvm_mp_state *mp_state);
Jan Kiszkad0bfb942008-12-15 13:52:10 +0100278int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
279 struct kvm_guest_debug *dbg);
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500280int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
281
Zhang Xiantaof8c16bb2007-11-14 20:40:21 +0800282int kvm_arch_init(void *opaque);
283void kvm_arch_exit(void);
Carsten Otte043405e2007-10-10 17:16:19 +0200284
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800285int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
286void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
287
288void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
289void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
290void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
291struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
Avi Kivity26e52152007-11-20 15:30:24 +0200292int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
Hollis Blanchardd40ccc62007-11-19 14:04:43 -0600293void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800294
295int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
296void kvm_arch_hardware_enable(void *garbage);
297void kvm_arch_hardware_disable(void *garbage);
298int kvm_arch_hardware_setup(void);
299void kvm_arch_hardware_unsetup(void);
300void kvm_arch_check_processor_compat(void *rtn);
Zhang Xiantao1d737c82007-12-14 09:35:10 +0800301int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
Gleb Natapov78646122009-03-23 12:12:11 +0200302int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800303
Zhang Xiantaod19a9cd2007-11-18 18:43:45 +0800304void kvm_free_physmem(struct kvm *kvm);
305
306struct kvm *kvm_arch_create_vm(void);
307void kvm_arch_destroy_vm(struct kvm *kvm);
Xiantao Zhang8a98f662008-10-06 13:47:38 +0800308void kvm_free_all_assigned_devices(struct kvm *kvm);
Sheng Yangad8ba2c2009-01-06 10:03:02 +0800309void kvm_arch_sync_events(struct kvm *kvm);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800310
Zhang Xiantao682c59a2007-12-11 20:36:00 +0800311int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
312int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
Marcelo Tosatti3d808402008-04-11 14:53:26 -0300313int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
Zhang Xiantao57361992007-12-17 14:21:40 +0800314void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
Zhang Xiantao682c59a2007-12-11 20:36:00 +0800315
Xiantao Zhangc77fb9d2008-09-27 10:55:40 +0800316int kvm_is_mmio_pfn(pfn_t pfn);
317
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300318struct kvm_irq_ack_notifier {
319 struct hlist_node link;
320 unsigned gsi;
321 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
322};
323
Sheng Yang2350bd12009-02-25 17:22:27 +0800324#define KVM_ASSIGNED_MSIX_PENDING 0x1
Sheng Yangc1e01512009-02-25 17:22:26 +0800325struct kvm_guest_msix_entry {
326 u32 vector;
327 u16 entry;
328 u16 flags;
329};
330
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300331struct kvm_assigned_dev_kernel {
332 struct kvm_irq_ack_notifier ack_notifier;
333 struct work_struct interrupt_work;
334 struct list_head list;
335 int assigned_dev_id;
336 int host_busnr;
337 int host_devfn;
Sheng Yangc1e01512009-02-25 17:22:26 +0800338 unsigned int entries_nr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300339 int host_irq;
Mark McLoughlindefaf152008-12-02 12:16:33 +0000340 bool host_irq_disabled;
Sheng Yangc1e01512009-02-25 17:22:26 +0800341 struct msix_entry *host_msix_entries;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300342 int guest_irq;
Sheng Yangc1e01512009-02-25 17:22:26 +0800343 struct kvm_guest_msix_entry *guest_msix_entries;
Sheng Yang4f906c12008-11-24 14:32:51 +0800344 unsigned long irq_requested_type;
Sheng Yang5550af42008-10-15 20:15:06 +0800345 int irq_source_id;
Weidong Hanb6535742008-12-08 23:29:53 +0800346 int flags;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300347 struct pci_dev *dev;
348 struct kvm *kvm;
Marcelo Tosatti547de292009-05-07 17:55:13 -0300349 spinlock_t assigned_dev_lock;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300350};
Avi Kivity75858a82009-01-04 17:10:50 +0200351
352struct kvm_irq_mask_notifier {
353 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
354 int irq;
355 struct hlist_node link;
356};
357
358void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
359 struct kvm_irq_mask_notifier *kimn);
360void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
361 struct kvm_irq_mask_notifier *kimn);
362void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
363
Gleb Natapov49256632009-02-04 17:28:14 +0200364int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
Marcelo Tosatti44882ee2009-01-27 15:12:38 -0200365void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
Xiantao Zhang3de42dc2008-10-06 13:48:45 +0800366void kvm_register_irq_ack_notifier(struct kvm *kvm,
367 struct kvm_irq_ack_notifier *kian);
Sheng Yange19e30e2008-10-20 16:07:10 +0800368void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
Sheng Yang5550af42008-10-15 20:15:06 +0800369int kvm_request_irq_source_id(struct kvm *kvm);
370void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300371
Sheng Yang522c68c2009-04-27 20:35:43 +0800372/* For vcpu->arch.iommu_flags */
373#define KVM_IOMMU_CACHE_COHERENCY 0x1
374
Joerg Roedel19de40a2008-12-03 14:43:34 +0100375#ifdef CONFIG_IOMMU_API
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300376int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
377 unsigned long npages);
Weidong Han260782b2008-12-02 21:03:39 +0800378int kvm_iommu_map_guest(struct kvm *kvm);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300379int kvm_iommu_unmap_guest(struct kvm *kvm);
Weidong Han260782b2008-12-02 21:03:39 +0800380int kvm_assign_device(struct kvm *kvm,
381 struct kvm_assigned_dev_kernel *assigned_dev);
Weidong Han0a920352008-12-02 21:24:23 +0800382int kvm_deassign_device(struct kvm *kvm,
383 struct kvm_assigned_dev_kernel *assigned_dev);
Joerg Roedel19de40a2008-12-03 14:43:34 +0100384#else /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300385static inline int kvm_iommu_map_pages(struct kvm *kvm,
386 gfn_t base_gfn,
387 unsigned long npages)
388{
389 return 0;
390}
391
Weidong Han260782b2008-12-02 21:03:39 +0800392static inline int kvm_iommu_map_guest(struct kvm *kvm)
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300393{
394 return -ENODEV;
395}
396
397static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
398{
399 return 0;
400}
Weidong Han260782b2008-12-02 21:03:39 +0800401
402static inline int kvm_assign_device(struct kvm *kvm,
403 struct kvm_assigned_dev_kernel *assigned_dev)
404{
405 return 0;
406}
Weidong Han0a920352008-12-02 21:24:23 +0800407
408static inline int kvm_deassign_device(struct kvm *kvm,
409 struct kvm_assigned_dev_kernel *assigned_dev)
410{
411 return 0;
412}
Joerg Roedel19de40a2008-12-03 14:43:34 +0100413#endif /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300414
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200415static inline void kvm_guest_enter(void)
416{
Christian Borntraegere56a7a22007-10-18 14:39:10 +0200417 account_system_vtime(current);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200418 current->flags |= PF_VCPU;
419}
420
421static inline void kvm_guest_exit(void)
422{
Christian Borntraegere56a7a22007-10-18 14:39:10 +0200423 account_system_vtime(current);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200424 current->flags &= ~PF_VCPU;
425}
426
Avi Kivity6aa8b732006-12-10 02:21:36 -0800427static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
428{
429 return slot - kvm->memslots;
430}
431
Avi Kivity1755fbc2007-11-21 14:44:45 +0200432static inline gpa_t gfn_to_gpa(gfn_t gfn)
433{
434 return (gpa_t)gfn << PAGE_SHIFT;
435}
Avi Kivity6aa8b732006-12-10 02:21:36 -0800436
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300437static inline hpa_t pfn_to_hpa(pfn_t pfn)
438{
439 return (hpa_t)pfn << PAGE_SHIFT;
440}
441
Marcelo Tosatti2f599712008-05-27 12:10:20 -0300442static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
Avi Kivity2f52d582008-01-16 12:49:30 +0200443{
444 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
445}
446
Avi Kivityba1389b2007-11-18 16:24:12 +0200447enum kvm_stat_kind {
448 KVM_STAT_VM,
449 KVM_STAT_VCPU,
450};
451
Hollis Blanchard417bc302007-10-31 17:24:23 -0500452struct kvm_stats_debugfs_item {
453 const char *name;
454 int offset;
Avi Kivityba1389b2007-11-18 16:24:12 +0200455 enum kvm_stat_kind kind;
Hollis Blanchard417bc302007-10-31 17:24:23 -0500456 struct dentry *dentry;
457};
458extern struct kvm_stats_debugfs_item debugfs_entries[];
Hollis Blanchard76f7c872008-04-15 16:05:42 -0500459extern struct dentry *kvm_debugfs_dir;
Feng(Eric) Liud4c9ff22008-04-10 08:47:53 -0400460
Hollis Blanchardd98e6342008-07-01 16:23:49 -0500461#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
462 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
463 vcpu, 5, d1, d2, d3, d4, d5)
464#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
465 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
466 vcpu, 4, d1, d2, d3, d4, 0)
467#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
468 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
469 vcpu, 3, d1, d2, d3, 0, 0)
470#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
471 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
472 vcpu, 2, d1, d2, 0, 0, 0)
473#define KVMTRACE_1D(evt, vcpu, d1, name) \
474 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
475 vcpu, 1, d1, 0, 0, 0, 0)
476#define KVMTRACE_0D(evt, vcpu, name) \
477 trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
478 vcpu, 0, 0, 0, 0, 0, 0)
479
Feng(Eric) Liud4c9ff22008-04-10 08:47:53 -0400480#ifdef CONFIG_KVM_TRACE
481int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
482void kvm_trace_cleanup(void);
483#else
484static inline
485int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
486{
487 return -EINVAL;
488}
489#define kvm_trace_cleanup() ((void)0)
490#endif
Hollis Blanchard417bc302007-10-31 17:24:23 -0500491
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200492#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
493static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
494{
495 if (unlikely(vcpu->kvm->mmu_notifier_count))
496 return 1;
497 /*
498 * Both reads happen under the mmu_lock and both values are
499 * modified under mmu_lock, so there's no need of smb_rmb()
500 * here in between, otherwise mmu_notifier_count should be
501 * read before mmu_notifier_seq, see
502 * mmu_notifier_invalidate_range_end write side.
503 */
504 if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
505 return 1;
506 return 0;
507}
508#endif
509
Avi Kivity399ec802008-11-19 13:58:46 +0200510#ifdef CONFIG_HAVE_KVM_IRQCHIP
511
512#define KVM_MAX_IRQ_ROUTES 1024
513
514int kvm_setup_default_irq_routing(struct kvm *kvm);
515int kvm_set_irq_routing(struct kvm *kvm,
516 const struct kvm_irq_routing_entry *entries,
517 unsigned nr,
518 unsigned flags);
519void kvm_free_irq_routing(struct kvm *kvm);
520
521#else
522
523static inline void kvm_free_irq_routing(struct kvm *kvm) {}
524
525#endif
526
Avi Kivity6aa8b732006-12-10 02:21:36 -0800527#endif