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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>
Sheng Yang0937c482008-11-24 14:32:53 +080018#include <linux/msi.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040019#include <asm/signal.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080020
Avi Kivity6aa8b732006-12-10 02:21:36 -080021#include <linux/kvm.h>
Ingo Molnar102d8322007-02-19 14:37:47 +020022#include <linux/kvm_para.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080023
Avi Kivityedf88412007-12-16 11:02:48 +020024#include <linux/kvm_types.h>
Hollis Blanchardd77a39d2007-12-03 15:30:23 -060025
Avi Kivityedf88412007-12-16 11:02:48 +020026#include <asm/kvm_host.h>
Zhang Xiantaod657a982007-12-14 09:41:22 +080027
Avi Kivity6aa8b732006-12-10 02:21:36 -080028/*
Avi Kivityd9e368d2007-06-07 19:18:30 +030029 * vcpu->requests bit members
30 */
Avi Kivity3176bc32007-10-16 17:22:08 +020031#define KVM_REQ_TLB_FLUSH 0
Avi Kivity2f52d582008-01-16 12:49:30 +020032#define KVM_REQ_MIGRATE_TIMER 1
Avi Kivityb209749f2007-10-22 16:50:39 +020033#define KVM_REQ_REPORT_TPR_ACCESS 2
Marcelo Tosatti2e53d632008-02-20 14:47:24 -050034#define KVM_REQ_MMU_RELOAD 3
Joerg Roedel71c4dfa2008-02-26 16:49:16 +010035#define KVM_REQ_TRIPLE_FAULT 4
Marcelo Tosatti06e05642008-06-06 16:37:36 -030036#define KVM_REQ_PENDING_TIMER 5
Marcelo Tosattid7690172008-09-08 15:23:48 -030037#define KVM_REQ_UNHALT 6
Marcelo Tosatti4731d4c2008-09-23 13:18:39 -030038#define KVM_REQ_MMU_SYNC 7
Gerd Hoffmannc8076602009-02-04 17:52:04 +010039#define KVM_REQ_KVMCLOCK_UPDATE 8
Marcelo Tosatti32f88402009-05-07 17:55:12 -030040#define KVM_REQ_KICK 9
Avi Kivity02daab22009-12-30 12:40:26 +020041#define KVM_REQ_DEACTIVATE_FPU 10
Avi Kivity6aa8b732006-12-10 02:21:36 -080042
Sheng Yang5550af42008-10-15 20:15:06 +080043#define KVM_USERSPACE_IRQ_SOURCE_ID 0
44
Michael S. Tsirkin6c474692009-06-29 22:24:26 +030045struct kvm;
Avi Kivity6aa8b732006-12-10 02:21:36 -080046struct kvm_vcpu;
Rusty Russellc16f8622007-07-30 21:12:19 +100047extern struct kmem_cache *kvm_vcpu_cache;
Avi Kivity6aa8b732006-12-10 02:21:36 -080048
Gregory Haskins2eeb2e92007-05-31 14:08:53 -040049/*
50 * It would be nice to use something smarter than a linear search, TBD...
51 * Thankfully we dont expect many devices to register (famous last words :),
52 * so until then it will suffice. At least its abstracted so we can change
53 * in one place.
54 */
55struct kvm_io_bus {
56 int dev_count;
Sridhar Samudralae80e2a62010-03-30 16:48:25 -070057#define NR_IOBUS_DEVS 200
Gregory Haskins2eeb2e92007-05-31 14:08:53 -040058 struct kvm_io_device *devs[NR_IOBUS_DEVS];
59};
60
Marcelo Tosattie93f8a02009-12-23 14:35:24 -020061enum kvm_bus {
62 KVM_MMIO_BUS,
63 KVM_PIO_BUS,
64 KVM_NR_BUSES
65};
66
67int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
68 int len, const void *val);
69int kvm_io_bus_read(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr, int len,
Michael S. Tsirkinbda90202009-06-29 22:24:32 +030070 void *val);
Marcelo Tosattie93f8a02009-12-23 14:35:24 -020071int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx,
Gregory Haskins090b7af2009-07-07 17:08:44 -040072 struct kvm_io_device *dev);
Marcelo Tosattie93f8a02009-12-23 14:35:24 -020073int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
74 struct kvm_io_device *dev);
Gregory Haskins2eeb2e92007-05-31 14:08:53 -040075
Zhang Xiantaod657a982007-12-14 09:41:22 +080076struct kvm_vcpu {
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080077 struct kvm *kvm;
Hollis Blanchard31bb1172008-01-28 17:42:34 -060078#ifdef CONFIG_PREEMPT_NOTIFIERS
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080079 struct preempt_notifier preempt_notifier;
Hollis Blanchard31bb1172008-01-28 17:42:34 -060080#endif
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080081 int vcpu_id;
82 struct mutex mutex;
83 int cpu;
84 struct kvm_run *run;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080085 unsigned long requests;
Jan Kiszkad0bfb942008-12-15 13:52:10 +010086 unsigned long guest_debug;
Marcelo Tosattif656ce02009-12-23 14:35:25 -020087 int srcu_idx;
88
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080089 int fpu_active;
90 int guest_fpu_loaded;
91 wait_queue_head_t wq;
92 int sigset_active;
93 sigset_t sigset;
94 struct kvm_vcpu_stat stat;
95
96#ifdef CONFIG_HAS_IOMEM
97 int mmio_needed;
98 int mmio_read_completed;
99 int mmio_is_write;
100 int mmio_size;
101 unsigned char mmio_data[8];
102 gpa_t mmio_phys_addr;
103#endif
Zhang Xiantaod657a982007-12-14 09:41:22 +0800104
105 struct kvm_vcpu_arch arch;
106};
107
Takuya Yoshikawa660c22c2010-04-13 22:47:24 +0900108/*
109 * Some of the bitops functions do not support too long bitmaps.
110 * This number must be determined not to exceed such limits.
111 */
112#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
113
Avi Kivity6aa8b732006-12-10 02:21:36 -0800114struct kvm_memory_slot {
115 gfn_t base_gfn;
116 unsigned long npages;
117 unsigned long flags;
Izik Eidus290fc382007-09-27 14:11:22 +0200118 unsigned long *rmap;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800119 unsigned long *dirty_bitmap;
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300120 struct {
121 unsigned long rmap_pde;
122 int write_count;
Joerg Roedelec04b262009-06-19 15:16:23 +0200123 } *lpage_info[KVM_NR_PAGE_SIZES - 1];
Izik Eidus8a7ae052007-10-18 11:09:33 +0200124 unsigned long userspace_addr;
Izik Eidus80b14b52007-10-25 11:54:04 +0200125 int user_alloc;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800126};
127
Takuya Yoshikawa87bf6e72010-04-12 19:35:35 +0900128static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
129{
130 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
131}
132
Avi Kivity399ec802008-11-19 13:58:46 +0200133struct kvm_kernel_irq_routing_entry {
134 u32 gsi;
Michael S. Tsirkin5116d8f2009-07-26 17:10:01 +0300135 u32 type;
Gleb Natapov49256632009-02-04 17:28:14 +0200136 int (*set)(struct kvm_kernel_irq_routing_entry *e,
Gleb Natapov1a6e4a82009-08-24 11:54:19 +0300137 struct kvm *kvm, int irq_source_id, int level);
Avi Kivity399ec802008-11-19 13:58:46 +0200138 union {
139 struct {
140 unsigned irqchip;
141 unsigned pin;
142 } irqchip;
Sheng Yang79950e12009-02-10 13:57:06 +0800143 struct msi_msg msi;
Avi Kivity399ec802008-11-19 13:58:46 +0200144 };
Gleb Natapov46e624b2009-08-24 11:54:20 +0300145 struct hlist_node link;
146};
147
Gleb Natapov3e71f882009-08-24 11:54:21 +0300148#ifdef __KVM_HAVE_IOAPIC
149
Gleb Natapov46e624b2009-08-24 11:54:20 +0300150struct kvm_irq_routing_table {
Gleb Natapov3e71f882009-08-24 11:54:21 +0300151 int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS];
Gleb Natapov46e624b2009-08-24 11:54:20 +0300152 struct kvm_kernel_irq_routing_entry *rt_entries;
153 u32 nr_rt_entries;
154 /*
155 * Array indexed by gsi. Each entry contains list of irq chips
156 * the gsi is connected to.
157 */
158 struct hlist_head map[0];
Avi Kivity399ec802008-11-19 13:58:46 +0200159};
160
Gleb Natapov3e71f882009-08-24 11:54:21 +0300161#else
162
163struct kvm_irq_routing_table {};
164
165#endif
166
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200167struct kvm_memslots {
168 int nmemslots;
169 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
170 KVM_PRIVATE_MEM_SLOTS];
171};
172
Avi Kivity6aa8b732006-12-10 02:21:36 -0800173struct kvm {
Marcelo Tosattiaaee2c92007-12-20 19:18:26 -0500174 spinlock_t mmu_lock;
Avi Kivity70e335e2010-02-18 11:25:22 +0200175 raw_spinlock_t requests_lock;
Marcelo Tosatti79fac952009-12-23 14:35:26 -0200176 struct mutex slots_lock;
Avi Kivity6d4e4c42007-11-21 16:41:05 +0200177 struct mm_struct *mm; /* userspace tied to this vm */
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200178 struct kvm_memslots *memslots;
Marcelo Tosattibc6678a2009-12-23 14:35:21 -0200179 struct srcu_struct srcu;
Gleb Natapov73880c82009-06-09 15:56:28 +0300180#ifdef CONFIG_KVM_APIC_ARCHITECTURE
181 u32 bsp_vcpu_id;
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300182 struct kvm_vcpu *bsp_vcpu;
Gleb Natapov73880c82009-06-09 15:56:28 +0300183#endif
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000184 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
Gleb Natapov73880c82009-06-09 15:56:28 +0300185 atomic_t online_vcpus;
Avi Kivity133de902007-02-12 00:54:44 -0800186 struct list_head vm_list;
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300187 struct mutex lock;
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200188 struct kvm_io_bus *buses[KVM_NR_BUSES];
Gregory Haskins721eecb2009-05-20 10:30:49 -0400189#ifdef CONFIG_HAVE_KVM_EVENTFD
190 struct {
191 spinlock_t lock;
192 struct list_head items;
193 } irqfds;
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400194 struct list_head ioeventfds;
Gregory Haskins721eecb2009-05-20 10:30:49 -0400195#endif
Avi Kivityba1389b2007-11-18 16:24:12 +0200196 struct kvm_vm_stat stat;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800197 struct kvm_arch arch;
Izik Eidusd39f13b2008-03-30 16:01:25 +0300198 atomic_t users_count;
Laurent Vivier5f94c172008-05-30 16:05:54 +0200199#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
200 struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
201 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
202#endif
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200203
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300204 struct mutex irq_lock;
Avi Kivity75858a82009-01-04 17:10:50 +0200205#ifdef CONFIG_HAVE_KVM_IRQCHIP
Gleb Natapov46e624b2009-08-24 11:54:20 +0300206 struct kvm_irq_routing_table *irq_routing;
Avi Kivity75858a82009-01-04 17:10:50 +0200207 struct hlist_head mask_notifier_list;
Gleb Natapov136bdfe2009-08-24 11:54:23 +0300208 struct hlist_head irq_ack_notifier_list;
Avi Kivity75858a82009-01-04 17:10:50 +0200209#endif
210
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200211#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
212 struct mmu_notifier mmu_notifier;
213 unsigned long mmu_notifier_seq;
214 long mmu_notifier_count;
215#endif
Avi Kivity6aa8b732006-12-10 02:21:36 -0800216};
217
Rusty Russellf0242472007-08-01 10:48:02 +1000218/* The guest did something we don't support. */
219#define pr_unimpl(vcpu, fmt, ...) \
220 do { \
221 if (printk_ratelimit()) \
222 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
223 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
Mike Dayd77c26f2007-10-08 09:02:08 -0400224 } while (0)
Rusty Russellf0242472007-08-01 10:48:02 +1000225
Avi Kivity6aa8b732006-12-10 02:21:36 -0800226#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
227#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
228
Gleb Natapov988a2ca2009-06-09 15:56:29 +0300229static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
230{
231 smp_rmb();
232 return kvm->vcpus[i];
233}
234
235#define kvm_for_each_vcpu(idx, vcpup, kvm) \
236 for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
237 idx < atomic_read(&kvm->online_vcpus) && vcpup; \
238 vcpup = kvm_get_vcpu(kvm, ++idx))
239
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000240int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
241void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
242
Carsten Otte313a3dc2007-10-11 19:16:52 +0200243void vcpu_load(struct kvm_vcpu *vcpu);
244void vcpu_put(struct kvm_vcpu *vcpu);
245
Avi Kivity0ee75be2010-04-28 15:39:01 +0300246int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
Rusty Russellc16f8622007-07-30 21:12:19 +1000247 struct module *module);
Zhang Xiantaocb498ea2007-11-14 20:39:31 +0800248void kvm_exit(void);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800249
Izik Eidusd39f13b2008-03-30 16:01:25 +0300250void kvm_get_kvm(struct kvm *kvm);
251void kvm_put_kvm(struct kvm *kvm);
252
Lai Jiangshan90d83dc2010-04-19 17:41:23 +0800253static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
254{
255 return rcu_dereference_check(kvm->memslots,
256 srcu_read_lock_held(&kvm->srcu)
257 || lockdep_is_held(&kvm->slots_lock));
258}
259
Avi Kivity6aa8b732006-12-10 02:21:36 -0800260#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
261#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
262static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
Avi Kivity6aa8b732006-12-10 02:21:36 -0800263
Izik Eiduscea7bb22007-10-17 19:17:48 +0200264extern struct page *bad_page;
Anthony Liguori35149e22008-04-02 14:46:56 -0500265extern pfn_t bad_pfn;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800266
Izik Eiduscea7bb22007-10-17 19:17:48 +0200267int is_error_page(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500268int is_error_pfn(pfn_t pfn);
Izik Eidusf9d46eb2007-11-11 22:02:22 +0200269int kvm_is_error_hva(unsigned long addr);
Izik Eidus210c7c42007-10-24 23:52:57 +0200270int kvm_set_memory_region(struct kvm *kvm,
271 struct kvm_userspace_memory_region *mem,
272 int user_alloc);
Sheng Yangf78e0e22007-10-29 09:40:42 +0800273int __kvm_set_memory_region(struct kvm *kvm,
274 struct kvm_userspace_memory_region *mem,
275 int user_alloc);
Marcelo Tosattif7784b82009-12-23 14:35:18 -0200276int kvm_arch_prepare_memory_region(struct kvm *kvm,
277 struct kvm_memory_slot *memslot,
278 struct kvm_memory_slot old,
279 struct kvm_userspace_memory_region *mem,
280 int user_alloc);
281void kvm_arch_commit_memory_region(struct kvm *kvm,
Zhang Xiantao0de10342007-11-20 16:25:04 +0800282 struct kvm_userspace_memory_region *mem,
283 struct kvm_memory_slot old,
284 int user_alloc);
Marcelo Tosatti54dee992009-06-11 12:07:44 -0300285void kvm_disable_largepages(void);
Marcelo Tosatti34d4cb82008-07-10 20:49:31 -0300286void kvm_arch_flush_shadow(struct kvm *kvm);
Izik Eidus290fc382007-09-27 14:11:22 +0200287gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
Marcelo Tosattia983fb22009-12-23 14:35:23 -0200288gfn_t unalias_gfn_instantiation(struct kvm *kvm, gfn_t gfn);
289
Avi Kivity954bbbc22007-03-30 14:02:32 +0300290struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300291unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
Izik Eidusb4231d62007-11-20 11:49:33 +0200292void kvm_release_page_clean(struct page *page);
293void kvm_release_page_dirty(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500294void kvm_set_page_dirty(struct page *page);
295void kvm_set_page_accessed(struct page *page);
296
297pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti506f0d62009-12-23 14:35:19 -0200298pfn_t gfn_to_pfn_memslot(struct kvm *kvm,
299 struct kvm_memory_slot *slot, gfn_t gfn);
Marcelo Tosattibc6678a2009-12-23 14:35:21 -0200300int memslot_id(struct kvm *kvm, gfn_t gfn);
Anthony Liguori35149e22008-04-02 14:46:56 -0500301void kvm_release_pfn_dirty(pfn_t);
302void kvm_release_pfn_clean(pfn_t pfn);
303void kvm_set_pfn_dirty(pfn_t pfn);
304void kvm_set_pfn_accessed(pfn_t pfn);
305void kvm_get_pfn(pfn_t pfn);
306
Izik Eidus195aefd2007-10-01 22:14:18 +0200307int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
308 int len);
Marcelo Tosatti7ec54582007-12-20 19:18:23 -0500309int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
310 unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200311int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
312int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
313 int offset, int len);
314int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
315 unsigned long len);
316int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
317int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800318struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
Izik Eiduse0d62c72007-10-24 23:57:46 +0200319int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
Joerg Roedel8f0b1ab2010-01-28 12:37:56 +0100320unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800321void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
322
Hollis Blanchard8776e512007-10-31 17:24:24 -0500323void kvm_vcpu_block(struct kvm_vcpu *vcpu);
Zhai, Edwind255f4f2009-10-09 18:03:20 +0800324void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800325void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300326void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
327void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Avi Kivityd9e368d2007-06-07 19:18:30 +0300328void kvm_flush_remote_tlbs(struct kvm *kvm);
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500329void kvm_reload_remote_mmus(struct kvm *kvm);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800330
Carsten Otte043405e2007-10-10 17:16:19 +0200331long kvm_arch_dev_ioctl(struct file *filp,
332 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200333long kvm_arch_vcpu_ioctl(struct file *filp,
334 unsigned int ioctl, unsigned long arg);
Zhang Xiantao018d00d2007-11-15 23:07:47 +0800335
336int kvm_dev_ioctl_check_extension(long ext);
337
Zhang Xiantao5bb064d2007-11-18 20:29:43 +0800338int kvm_get_dirty_log(struct kvm *kvm,
339 struct kvm_dirty_log *log, int *is_dirty);
340int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
341 struct kvm_dirty_log *log);
342
Carsten Otte1fe779f2007-10-29 16:08:35 +0100343int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
344 struct
345 kvm_userspace_memory_region *mem,
346 int user_alloc);
347long kvm_arch_vm_ioctl(struct file *filp,
348 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200349
Hollis Blanchardd0752062007-10-31 17:24:25 -0500350int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
351int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
352
Zhang Xiantao8b006792007-11-16 13:05:55 +0800353int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
354 struct kvm_translation *tr);
355
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500356int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
357int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
358int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
359 struct kvm_sregs *sregs);
360int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
361 struct kvm_sregs *sregs);
Marcelo Tosatti62d9f0d2008-04-11 13:24:45 -0300362int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
363 struct kvm_mp_state *mp_state);
364int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
365 struct kvm_mp_state *mp_state);
Jan Kiszkad0bfb942008-12-15 13:52:10 +0100366int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
367 struct kvm_guest_debug *dbg);
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500368int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
369
Zhang Xiantaof8c16bb2007-11-14 20:40:21 +0800370int kvm_arch_init(void *opaque);
371void kvm_arch_exit(void);
Carsten Otte043405e2007-10-10 17:16:19 +0200372
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800373int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
374void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
375
376void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
377void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
378void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
379struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
Avi Kivity26e52152007-11-20 15:30:24 +0200380int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
Hollis Blanchardd40ccc62007-11-19 14:04:43 -0600381void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800382
383int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
Alexander Graf10474ae2009-09-15 11:37:46 +0200384int kvm_arch_hardware_enable(void *garbage);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800385void kvm_arch_hardware_disable(void *garbage);
386int kvm_arch_hardware_setup(void);
387void kvm_arch_hardware_unsetup(void);
388void kvm_arch_check_processor_compat(void *rtn);
Zhang Xiantao1d737c82007-12-14 09:35:10 +0800389int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800390
Zhang Xiantaod19a9cd2007-11-18 18:43:45 +0800391void kvm_free_physmem(struct kvm *kvm);
392
393struct kvm *kvm_arch_create_vm(void);
394void kvm_arch_destroy_vm(struct kvm *kvm);
Xiantao Zhang8a98f662008-10-06 13:47:38 +0800395void kvm_free_all_assigned_devices(struct kvm *kvm);
Sheng Yangad8ba2c2009-01-06 10:03:02 +0800396void kvm_arch_sync_events(struct kvm *kvm);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800397
Marcelo Tosatti3d808402008-04-11 14:53:26 -0300398int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
Zhang Xiantao57361992007-12-17 14:21:40 +0800399void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
Zhang Xiantao682c59a2007-12-11 20:36:00 +0800400
Xiantao Zhangc77fb9d2008-09-27 10:55:40 +0800401int kvm_is_mmio_pfn(pfn_t pfn);
402
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300403struct kvm_irq_ack_notifier {
404 struct hlist_node link;
405 unsigned gsi;
406 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
407};
408
Sheng Yang2350bd12009-02-25 17:22:27 +0800409#define KVM_ASSIGNED_MSIX_PENDING 0x1
Sheng Yangc1e01512009-02-25 17:22:26 +0800410struct kvm_guest_msix_entry {
411 u32 vector;
412 u16 entry;
413 u16 flags;
414};
415
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300416struct kvm_assigned_dev_kernel {
417 struct kvm_irq_ack_notifier ack_notifier;
418 struct work_struct interrupt_work;
419 struct list_head list;
420 int assigned_dev_id;
Zhai, Edwinab9f4ec2010-01-29 14:38:44 +0800421 int host_segnr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300422 int host_busnr;
423 int host_devfn;
Sheng Yangc1e01512009-02-25 17:22:26 +0800424 unsigned int entries_nr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300425 int host_irq;
Mark McLoughlindefaf152008-12-02 12:16:33 +0000426 bool host_irq_disabled;
Sheng Yangc1e01512009-02-25 17:22:26 +0800427 struct msix_entry *host_msix_entries;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300428 int guest_irq;
Sheng Yangc1e01512009-02-25 17:22:26 +0800429 struct kvm_guest_msix_entry *guest_msix_entries;
Sheng Yang4f906c12008-11-24 14:32:51 +0800430 unsigned long irq_requested_type;
Sheng Yang5550af42008-10-15 20:15:06 +0800431 int irq_source_id;
Weidong Hanb6535742008-12-08 23:29:53 +0800432 int flags;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300433 struct pci_dev *dev;
434 struct kvm *kvm;
Marcelo Tosatti547de292009-05-07 17:55:13 -0300435 spinlock_t assigned_dev_lock;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300436};
Avi Kivity75858a82009-01-04 17:10:50 +0200437
438struct kvm_irq_mask_notifier {
439 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
440 int irq;
441 struct hlist_node link;
442};
443
444void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
445 struct kvm_irq_mask_notifier *kimn);
446void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
447 struct kvm_irq_mask_notifier *kimn);
448void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
449
Gleb Natapov46e624b2009-08-24 11:54:20 +0300450#ifdef __KVM_HAVE_IOAPIC
451void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
452 union kvm_ioapic_redirect_entry *entry,
453 unsigned long *deliver_bitmask);
454#endif
455int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level);
Marcelo Tosatti44882ee2009-01-27 15:12:38 -0200456void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
Xiantao Zhang3de42dc2008-10-06 13:48:45 +0800457void kvm_register_irq_ack_notifier(struct kvm *kvm,
458 struct kvm_irq_ack_notifier *kian);
Marcelo Tosattifa40a822009-06-04 15:08:24 -0300459void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
460 struct kvm_irq_ack_notifier *kian);
Sheng Yang5550af42008-10-15 20:15:06 +0800461int kvm_request_irq_source_id(struct kvm *kvm);
462void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300463
Sheng Yang522c68c2009-04-27 20:35:43 +0800464/* For vcpu->arch.iommu_flags */
465#define KVM_IOMMU_CACHE_COHERENCY 0x1
466
Joerg Roedel19de40a2008-12-03 14:43:34 +0100467#ifdef CONFIG_IOMMU_API
Marcelo Tosatti3ad26d82009-12-23 14:35:20 -0200468int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
Weidong Han260782b2008-12-02 21:03:39 +0800469int kvm_iommu_map_guest(struct kvm *kvm);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300470int kvm_iommu_unmap_guest(struct kvm *kvm);
Weidong Han260782b2008-12-02 21:03:39 +0800471int kvm_assign_device(struct kvm *kvm,
472 struct kvm_assigned_dev_kernel *assigned_dev);
Weidong Han0a920352008-12-02 21:24:23 +0800473int kvm_deassign_device(struct kvm *kvm,
474 struct kvm_assigned_dev_kernel *assigned_dev);
Joerg Roedel19de40a2008-12-03 14:43:34 +0100475#else /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300476static inline int kvm_iommu_map_pages(struct kvm *kvm,
477 gfn_t base_gfn,
478 unsigned long npages)
479{
480 return 0;
481}
482
Weidong Han260782b2008-12-02 21:03:39 +0800483static inline int kvm_iommu_map_guest(struct kvm *kvm)
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300484{
485 return -ENODEV;
486}
487
488static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
489{
490 return 0;
491}
Weidong Han260782b2008-12-02 21:03:39 +0800492
493static inline int kvm_assign_device(struct kvm *kvm,
494 struct kvm_assigned_dev_kernel *assigned_dev)
495{
496 return 0;
497}
Weidong Han0a920352008-12-02 21:24:23 +0800498
499static inline int kvm_deassign_device(struct kvm *kvm,
500 struct kvm_assigned_dev_kernel *assigned_dev)
501{
502 return 0;
503}
Joerg Roedel19de40a2008-12-03 14:43:34 +0100504#endif /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300505
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200506static inline void kvm_guest_enter(void)
507{
Christian Borntraegere56a7a22007-10-18 14:39:10 +0200508 account_system_vtime(current);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200509 current->flags |= PF_VCPU;
510}
511
512static inline void kvm_guest_exit(void)
513{
Christian Borntraegere56a7a22007-10-18 14:39:10 +0200514 account_system_vtime(current);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200515 current->flags &= ~PF_VCPU;
516}
517
Avi Kivity1755fbc2007-11-21 14:44:45 +0200518static inline gpa_t gfn_to_gpa(gfn_t gfn)
519{
520 return (gpa_t)gfn << PAGE_SHIFT;
521}
Avi Kivity6aa8b732006-12-10 02:21:36 -0800522
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300523static inline hpa_t pfn_to_hpa(pfn_t pfn)
524{
525 return (hpa_t)pfn << PAGE_SHIFT;
526}
527
Marcelo Tosatti2f599712008-05-27 12:10:20 -0300528static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
Avi Kivity2f52d582008-01-16 12:49:30 +0200529{
530 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
531}
532
Avi Kivityba1389b2007-11-18 16:24:12 +0200533enum kvm_stat_kind {
534 KVM_STAT_VM,
535 KVM_STAT_VCPU,
536};
537
Hollis Blanchard417bc302007-10-31 17:24:23 -0500538struct kvm_stats_debugfs_item {
539 const char *name;
540 int offset;
Avi Kivityba1389b2007-11-18 16:24:12 +0200541 enum kvm_stat_kind kind;
Hollis Blanchard417bc302007-10-31 17:24:23 -0500542 struct dentry *dentry;
543};
544extern struct kvm_stats_debugfs_item debugfs_entries[];
Hollis Blanchard76f7c872008-04-15 16:05:42 -0500545extern struct dentry *kvm_debugfs_dir;
Feng(Eric) Liud4c9ff22008-04-10 08:47:53 -0400546
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200547#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
548static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
549{
550 if (unlikely(vcpu->kvm->mmu_notifier_count))
551 return 1;
552 /*
553 * Both reads happen under the mmu_lock and both values are
554 * modified under mmu_lock, so there's no need of smb_rmb()
555 * here in between, otherwise mmu_notifier_count should be
556 * read before mmu_notifier_seq, see
557 * mmu_notifier_invalidate_range_end write side.
558 */
559 if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
560 return 1;
561 return 0;
562}
563#endif
564
Marcelo Tosattia983fb22009-12-23 14:35:23 -0200565#ifndef KVM_ARCH_HAS_UNALIAS_INSTANTIATION
566#define unalias_gfn_instantiation unalias_gfn
567#endif
568
Avi Kivity399ec802008-11-19 13:58:46 +0200569#ifdef CONFIG_HAVE_KVM_IRQCHIP
570
571#define KVM_MAX_IRQ_ROUTES 1024
572
573int kvm_setup_default_irq_routing(struct kvm *kvm);
574int kvm_set_irq_routing(struct kvm *kvm,
575 const struct kvm_irq_routing_entry *entries,
576 unsigned nr,
577 unsigned flags);
578void kvm_free_irq_routing(struct kvm *kvm);
579
580#else
581
582static inline void kvm_free_irq_routing(struct kvm *kvm) {}
583
584#endif
585
Gregory Haskins721eecb2009-05-20 10:30:49 -0400586#ifdef CONFIG_HAVE_KVM_EVENTFD
587
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400588void kvm_eventfd_init(struct kvm *kvm);
Gregory Haskins721eecb2009-05-20 10:30:49 -0400589int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
590void kvm_irqfd_release(struct kvm *kvm);
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400591int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
Gregory Haskins721eecb2009-05-20 10:30:49 -0400592
593#else
594
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400595static inline void kvm_eventfd_init(struct kvm *kvm) {}
Gregory Haskins721eecb2009-05-20 10:30:49 -0400596static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
597{
598 return -EINVAL;
599}
600
601static inline void kvm_irqfd_release(struct kvm *kvm) {}
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400602static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
603{
604 return -ENOSYS;
605}
Gregory Haskins721eecb2009-05-20 10:30:49 -0400606
607#endif /* CONFIG_HAVE_KVM_EVENTFD */
608
Gleb Natapov73880c82009-06-09 15:56:28 +0300609#ifdef CONFIG_KVM_APIC_ARCHITECTURE
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300610static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
611{
Marcelo Tosattid3efc8e2009-06-17 10:07:59 -0300612 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300613}
Avi Kivity6aa8b732006-12-10 02:21:36 -0800614#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +0300615
616#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
617
618long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
619 unsigned long arg);
620
621#else
622
623static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
624 unsigned long arg)
625{
626 return -ENOTTY;
627}
628
Gleb Natapov73880c82009-06-09 15:56:28 +0300629#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +0300630
631#endif
632