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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;
Avi Kivityd94e1dc2010-05-03 16:54:48 +030084 atomic_t guest_mode;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080085 struct kvm_run *run;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080086 unsigned long requests;
Jan Kiszkad0bfb942008-12-15 13:52:10 +010087 unsigned long guest_debug;
Marcelo Tosattif656ce02009-12-23 14:35:25 -020088 int srcu_idx;
89
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080090 int fpu_active;
Dexuan Cui2acf9232010-06-10 11:27:12 +080091 int guest_fpu_loaded, guest_xcr0_loaded;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +080092 wait_queue_head_t wq;
93 int sigset_active;
94 sigset_t sigset;
95 struct kvm_vcpu_stat stat;
96
97#ifdef CONFIG_HAS_IOMEM
98 int mmio_needed;
99 int mmio_read_completed;
100 int mmio_is_write;
101 int mmio_size;
102 unsigned char mmio_data[8];
103 gpa_t mmio_phys_addr;
104#endif
Zhang Xiantaod657a982007-12-14 09:41:22 +0800105
106 struct kvm_vcpu_arch arch;
107};
108
Takuya Yoshikawa660c22c2010-04-13 22:47:24 +0900109/*
110 * Some of the bitops functions do not support too long bitmaps.
111 * This number must be determined not to exceed such limits.
112 */
113#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
114
Avi Kivity6aa8b732006-12-10 02:21:36 -0800115struct kvm_memory_slot {
116 gfn_t base_gfn;
117 unsigned long npages;
118 unsigned long flags;
Izik Eidus290fc382007-09-27 14:11:22 +0200119 unsigned long *rmap;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800120 unsigned long *dirty_bitmap;
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300121 struct {
122 unsigned long rmap_pde;
123 int write_count;
Joerg Roedelec04b262009-06-19 15:16:23 +0200124 } *lpage_info[KVM_NR_PAGE_SIZES - 1];
Izik Eidus8a7ae052007-10-18 11:09:33 +0200125 unsigned long userspace_addr;
Izik Eidus80b14b52007-10-25 11:54:04 +0200126 int user_alloc;
Avi Kivitye36d96f2010-06-21 10:56:36 +0300127 int id;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800128};
129
Takuya Yoshikawa87bf6e72010-04-12 19:35:35 +0900130static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
131{
132 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
133}
134
Avi Kivity399ec802008-11-19 13:58:46 +0200135struct kvm_kernel_irq_routing_entry {
136 u32 gsi;
Michael S. Tsirkin5116d8f2009-07-26 17:10:01 +0300137 u32 type;
Gleb Natapov49256632009-02-04 17:28:14 +0200138 int (*set)(struct kvm_kernel_irq_routing_entry *e,
Gleb Natapov1a6e4a82009-08-24 11:54:19 +0300139 struct kvm *kvm, int irq_source_id, int level);
Avi Kivity399ec802008-11-19 13:58:46 +0200140 union {
141 struct {
142 unsigned irqchip;
143 unsigned pin;
144 } irqchip;
Sheng Yang79950e12009-02-10 13:57:06 +0800145 struct msi_msg msi;
Avi Kivity399ec802008-11-19 13:58:46 +0200146 };
Gleb Natapov46e624b2009-08-24 11:54:20 +0300147 struct hlist_node link;
148};
149
Gleb Natapov3e71f882009-08-24 11:54:21 +0300150#ifdef __KVM_HAVE_IOAPIC
151
Gleb Natapov46e624b2009-08-24 11:54:20 +0300152struct kvm_irq_routing_table {
Gleb Natapov3e71f882009-08-24 11:54:21 +0300153 int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS];
Gleb Natapov46e624b2009-08-24 11:54:20 +0300154 struct kvm_kernel_irq_routing_entry *rt_entries;
155 u32 nr_rt_entries;
156 /*
157 * Array indexed by gsi. Each entry contains list of irq chips
158 * the gsi is connected to.
159 */
160 struct hlist_head map[0];
Avi Kivity399ec802008-11-19 13:58:46 +0200161};
162
Gleb Natapov3e71f882009-08-24 11:54:21 +0300163#else
164
165struct kvm_irq_routing_table {};
166
167#endif
168
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200169struct kvm_memslots {
170 int nmemslots;
171 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
172 KVM_PRIVATE_MEM_SLOTS];
173};
174
Avi Kivity6aa8b732006-12-10 02:21:36 -0800175struct kvm {
Marcelo Tosattiaaee2c92007-12-20 19:18:26 -0500176 spinlock_t mmu_lock;
Avi Kivity70e335e2010-02-18 11:25:22 +0200177 raw_spinlock_t requests_lock;
Marcelo Tosatti79fac952009-12-23 14:35:26 -0200178 struct mutex slots_lock;
Avi Kivity6d4e4c42007-11-21 16:41:05 +0200179 struct mm_struct *mm; /* userspace tied to this vm */
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200180 struct kvm_memslots *memslots;
Marcelo Tosattibc6678a2009-12-23 14:35:21 -0200181 struct srcu_struct srcu;
Gleb Natapov73880c82009-06-09 15:56:28 +0300182#ifdef CONFIG_KVM_APIC_ARCHITECTURE
183 u32 bsp_vcpu_id;
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300184 struct kvm_vcpu *bsp_vcpu;
Gleb Natapov73880c82009-06-09 15:56:28 +0300185#endif
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000186 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
Gleb Natapov73880c82009-06-09 15:56:28 +0300187 atomic_t online_vcpus;
Avi Kivity133de902007-02-12 00:54:44 -0800188 struct list_head vm_list;
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300189 struct mutex lock;
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200190 struct kvm_io_bus *buses[KVM_NR_BUSES];
Gregory Haskins721eecb2009-05-20 10:30:49 -0400191#ifdef CONFIG_HAVE_KVM_EVENTFD
192 struct {
193 spinlock_t lock;
194 struct list_head items;
195 } irqfds;
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400196 struct list_head ioeventfds;
Gregory Haskins721eecb2009-05-20 10:30:49 -0400197#endif
Avi Kivityba1389b2007-11-18 16:24:12 +0200198 struct kvm_vm_stat stat;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800199 struct kvm_arch arch;
Izik Eidusd39f13b2008-03-30 16:01:25 +0300200 atomic_t users_count;
Laurent Vivier5f94c172008-05-30 16:05:54 +0200201#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
202 struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
203 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
204#endif
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200205
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300206 struct mutex irq_lock;
Avi Kivity75858a82009-01-04 17:10:50 +0200207#ifdef CONFIG_HAVE_KVM_IRQCHIP
Gleb Natapov46e624b2009-08-24 11:54:20 +0300208 struct kvm_irq_routing_table *irq_routing;
Avi Kivity75858a82009-01-04 17:10:50 +0200209 struct hlist_head mask_notifier_list;
Gleb Natapov136bdfe2009-08-24 11:54:23 +0300210 struct hlist_head irq_ack_notifier_list;
Avi Kivity75858a82009-01-04 17:10:50 +0200211#endif
212
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200213#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
214 struct mmu_notifier mmu_notifier;
215 unsigned long mmu_notifier_seq;
216 long mmu_notifier_count;
217#endif
Avi Kivity6aa8b732006-12-10 02:21:36 -0800218};
219
Rusty Russellf0242472007-08-01 10:48:02 +1000220/* The guest did something we don't support. */
221#define pr_unimpl(vcpu, fmt, ...) \
222 do { \
223 if (printk_ratelimit()) \
224 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
225 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
Mike Dayd77c26f2007-10-08 09:02:08 -0400226 } while (0)
Rusty Russellf0242472007-08-01 10:48:02 +1000227
Avi Kivity6aa8b732006-12-10 02:21:36 -0800228#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
229#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
230
Gleb Natapov988a2ca2009-06-09 15:56:29 +0300231static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
232{
233 smp_rmb();
234 return kvm->vcpus[i];
235}
236
237#define kvm_for_each_vcpu(idx, vcpup, kvm) \
238 for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
239 idx < atomic_read(&kvm->online_vcpus) && vcpup; \
240 vcpup = kvm_get_vcpu(kvm, ++idx))
241
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000242int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
243void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
244
Carsten Otte313a3dc2007-10-11 19:16:52 +0200245void vcpu_load(struct kvm_vcpu *vcpu);
246void vcpu_put(struct kvm_vcpu *vcpu);
247
Avi Kivity0ee75be2010-04-28 15:39:01 +0300248int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
Rusty Russellc16f8622007-07-30 21:12:19 +1000249 struct module *module);
Zhang Xiantaocb498ea2007-11-14 20:39:31 +0800250void kvm_exit(void);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800251
Izik Eidusd39f13b2008-03-30 16:01:25 +0300252void kvm_get_kvm(struct kvm *kvm);
253void kvm_put_kvm(struct kvm *kvm);
254
Lai Jiangshan90d83dc2010-04-19 17:41:23 +0800255static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
256{
257 return rcu_dereference_check(kvm->memslots,
258 srcu_read_lock_held(&kvm->srcu)
259 || lockdep_is_held(&kvm->slots_lock));
260}
261
Avi Kivity6aa8b732006-12-10 02:21:36 -0800262#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
263#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
264static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
Avi Kivity6aa8b732006-12-10 02:21:36 -0800265
Izik Eiduscea7bb22007-10-17 19:17:48 +0200266extern struct page *bad_page;
Anthony Liguori35149e22008-04-02 14:46:56 -0500267extern pfn_t bad_pfn;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800268
Izik Eiduscea7bb22007-10-17 19:17:48 +0200269int is_error_page(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500270int is_error_pfn(pfn_t pfn);
Huang Yingbf998152010-05-31 14:28:19 +0800271int is_hwpoison_pfn(pfn_t pfn);
Gleb Natapovedba23e2010-07-07 20:16:45 +0300272int is_fault_pfn(pfn_t pfn);
Izik Eidusf9d46eb2007-11-11 22:02:22 +0200273int kvm_is_error_hva(unsigned long addr);
Izik Eidus210c7c42007-10-24 23:52:57 +0200274int kvm_set_memory_region(struct kvm *kvm,
275 struct kvm_userspace_memory_region *mem,
276 int user_alloc);
Sheng Yangf78e0e22007-10-29 09:40:42 +0800277int __kvm_set_memory_region(struct kvm *kvm,
278 struct kvm_userspace_memory_region *mem,
279 int user_alloc);
Marcelo Tosattif7784b82009-12-23 14:35:18 -0200280int kvm_arch_prepare_memory_region(struct kvm *kvm,
281 struct kvm_memory_slot *memslot,
282 struct kvm_memory_slot old,
283 struct kvm_userspace_memory_region *mem,
284 int user_alloc);
285void kvm_arch_commit_memory_region(struct kvm *kvm,
Zhang Xiantao0de10342007-11-20 16:25:04 +0800286 struct kvm_userspace_memory_region *mem,
287 struct kvm_memory_slot old,
288 int user_alloc);
Marcelo Tosatti54dee992009-06-11 12:07:44 -0300289void kvm_disable_largepages(void);
Marcelo Tosatti34d4cb82008-07-10 20:49:31 -0300290void kvm_arch_flush_shadow(struct kvm *kvm);
Marcelo Tosattia983fb22009-12-23 14:35:23 -0200291
Avi Kivity954bbbc22007-03-30 14:02:32 +0300292struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300293unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
Izik Eidusb4231d62007-11-20 11:49:33 +0200294void kvm_release_page_clean(struct page *page);
295void kvm_release_page_dirty(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500296void kvm_set_page_dirty(struct page *page);
297void kvm_set_page_accessed(struct page *page);
298
299pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti506f0d62009-12-23 14:35:19 -0200300pfn_t gfn_to_pfn_memslot(struct kvm *kvm,
301 struct kvm_memory_slot *slot, gfn_t gfn);
Marcelo Tosattibc6678a2009-12-23 14:35:21 -0200302int memslot_id(struct kvm *kvm, gfn_t gfn);
Anthony Liguori35149e22008-04-02 14:46:56 -0500303void kvm_release_pfn_dirty(pfn_t);
304void kvm_release_pfn_clean(pfn_t pfn);
305void kvm_set_pfn_dirty(pfn_t pfn);
306void kvm_set_pfn_accessed(pfn_t pfn);
307void kvm_get_pfn(pfn_t pfn);
308
Izik Eidus195aefd2007-10-01 22:14:18 +0200309int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
310 int len);
Marcelo Tosatti7ec54582007-12-20 19:18:23 -0500311int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
312 unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200313int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
314int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
315 int offset, int len);
316int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
317 unsigned long len);
318int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
319int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800320struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
Izik Eiduse0d62c72007-10-24 23:57:46 +0200321int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
Joerg Roedel8f0b1ab2010-01-28 12:37:56 +0100322unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800323void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
324
Hollis Blanchard8776e512007-10-31 17:24:24 -0500325void kvm_vcpu_block(struct kvm_vcpu *vcpu);
Zhai, Edwind255f4f2009-10-09 18:03:20 +0800326void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800327void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300328void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
329void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Avi Kivityd9e368d2007-06-07 19:18:30 +0300330void kvm_flush_remote_tlbs(struct kvm *kvm);
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500331void kvm_reload_remote_mmus(struct kvm *kvm);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800332
Carsten Otte043405e2007-10-10 17:16:19 +0200333long kvm_arch_dev_ioctl(struct file *filp,
334 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200335long kvm_arch_vcpu_ioctl(struct file *filp,
336 unsigned int ioctl, unsigned long arg);
Zhang Xiantao018d00d2007-11-15 23:07:47 +0800337
338int kvm_dev_ioctl_check_extension(long ext);
339
Zhang Xiantao5bb064d2007-11-18 20:29:43 +0800340int kvm_get_dirty_log(struct kvm *kvm,
341 struct kvm_dirty_log *log, int *is_dirty);
342int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
343 struct kvm_dirty_log *log);
344
Carsten Otte1fe779f2007-10-29 16:08:35 +0100345int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
346 struct
347 kvm_userspace_memory_region *mem,
348 int user_alloc);
349long kvm_arch_vm_ioctl(struct file *filp,
350 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200351
Hollis Blanchardd0752062007-10-31 17:24:25 -0500352int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
353int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
354
Zhang Xiantao8b006792007-11-16 13:05:55 +0800355int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
356 struct kvm_translation *tr);
357
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500358int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
359int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
360int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
361 struct kvm_sregs *sregs);
362int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
363 struct kvm_sregs *sregs);
Marcelo Tosatti62d9f0d2008-04-11 13:24:45 -0300364int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
365 struct kvm_mp_state *mp_state);
366int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
367 struct kvm_mp_state *mp_state);
Jan Kiszkad0bfb942008-12-15 13:52:10 +0100368int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
369 struct kvm_guest_debug *dbg);
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500370int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
371
Zhang Xiantaof8c16bb2007-11-14 20:40:21 +0800372int kvm_arch_init(void *opaque);
373void kvm_arch_exit(void);
Carsten Otte043405e2007-10-10 17:16:19 +0200374
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800375int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
376void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
377
378void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
379void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
380void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
381struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
Avi Kivity26e52152007-11-20 15:30:24 +0200382int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
Hollis Blanchardd40ccc62007-11-19 14:04:43 -0600383void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800384
385int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
Alexander Graf10474ae2009-09-15 11:37:46 +0200386int kvm_arch_hardware_enable(void *garbage);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800387void kvm_arch_hardware_disable(void *garbage);
388int kvm_arch_hardware_setup(void);
389void kvm_arch_hardware_unsetup(void);
390void kvm_arch_check_processor_compat(void *rtn);
Zhang Xiantao1d737c82007-12-14 09:35:10 +0800391int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800392
Zhang Xiantaod19a9cd2007-11-18 18:43:45 +0800393void kvm_free_physmem(struct kvm *kvm);
394
395struct kvm *kvm_arch_create_vm(void);
396void kvm_arch_destroy_vm(struct kvm *kvm);
Xiantao Zhang8a98f662008-10-06 13:47:38 +0800397void kvm_free_all_assigned_devices(struct kvm *kvm);
Sheng Yangad8ba2c2009-01-06 10:03:02 +0800398void kvm_arch_sync_events(struct kvm *kvm);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800399
Marcelo Tosatti3d808402008-04-11 14:53:26 -0300400int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
Zhang Xiantao57361992007-12-17 14:21:40 +0800401void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
Zhang Xiantao682c59a2007-12-11 20:36:00 +0800402
Xiantao Zhangc77fb9d2008-09-27 10:55:40 +0800403int kvm_is_mmio_pfn(pfn_t pfn);
404
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300405struct kvm_irq_ack_notifier {
406 struct hlist_node link;
407 unsigned gsi;
408 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
409};
410
Sheng Yang2350bd12009-02-25 17:22:27 +0800411#define KVM_ASSIGNED_MSIX_PENDING 0x1
Sheng Yangc1e01512009-02-25 17:22:26 +0800412struct kvm_guest_msix_entry {
413 u32 vector;
414 u16 entry;
415 u16 flags;
416};
417
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300418struct kvm_assigned_dev_kernel {
419 struct kvm_irq_ack_notifier ack_notifier;
420 struct work_struct interrupt_work;
421 struct list_head list;
422 int assigned_dev_id;
Zhai, Edwinab9f4ec2010-01-29 14:38:44 +0800423 int host_segnr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300424 int host_busnr;
425 int host_devfn;
Sheng Yangc1e01512009-02-25 17:22:26 +0800426 unsigned int entries_nr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300427 int host_irq;
Mark McLoughlindefaf152008-12-02 12:16:33 +0000428 bool host_irq_disabled;
Sheng Yangc1e01512009-02-25 17:22:26 +0800429 struct msix_entry *host_msix_entries;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300430 int guest_irq;
Sheng Yangc1e01512009-02-25 17:22:26 +0800431 struct kvm_guest_msix_entry *guest_msix_entries;
Sheng Yang4f906c12008-11-24 14:32:51 +0800432 unsigned long irq_requested_type;
Sheng Yang5550af42008-10-15 20:15:06 +0800433 int irq_source_id;
Weidong Hanb6535742008-12-08 23:29:53 +0800434 int flags;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300435 struct pci_dev *dev;
436 struct kvm *kvm;
Marcelo Tosatti547de292009-05-07 17:55:13 -0300437 spinlock_t assigned_dev_lock;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300438};
Avi Kivity75858a82009-01-04 17:10:50 +0200439
440struct kvm_irq_mask_notifier {
441 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
442 int irq;
443 struct hlist_node link;
444};
445
446void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
447 struct kvm_irq_mask_notifier *kimn);
448void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
449 struct kvm_irq_mask_notifier *kimn);
Gleb Natapov4a994352010-07-11 15:32:23 +0300450void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
451 bool mask);
Avi Kivity75858a82009-01-04 17:10:50 +0200452
Gleb Natapov46e624b2009-08-24 11:54:20 +0300453#ifdef __KVM_HAVE_IOAPIC
454void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
455 union kvm_ioapic_redirect_entry *entry,
456 unsigned long *deliver_bitmask);
457#endif
458int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level);
Marcelo Tosatti44882ee2009-01-27 15:12:38 -0200459void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
Xiantao Zhang3de42dc2008-10-06 13:48:45 +0800460void kvm_register_irq_ack_notifier(struct kvm *kvm,
461 struct kvm_irq_ack_notifier *kian);
Marcelo Tosattifa40a822009-06-04 15:08:24 -0300462void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
463 struct kvm_irq_ack_notifier *kian);
Sheng Yang5550af42008-10-15 20:15:06 +0800464int kvm_request_irq_source_id(struct kvm *kvm);
465void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300466
Sheng Yang522c68c2009-04-27 20:35:43 +0800467/* For vcpu->arch.iommu_flags */
468#define KVM_IOMMU_CACHE_COHERENCY 0x1
469
Joerg Roedel19de40a2008-12-03 14:43:34 +0100470#ifdef CONFIG_IOMMU_API
Marcelo Tosatti3ad26d82009-12-23 14:35:20 -0200471int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
Weidong Han260782b2008-12-02 21:03:39 +0800472int kvm_iommu_map_guest(struct kvm *kvm);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300473int kvm_iommu_unmap_guest(struct kvm *kvm);
Weidong Han260782b2008-12-02 21:03:39 +0800474int kvm_assign_device(struct kvm *kvm,
475 struct kvm_assigned_dev_kernel *assigned_dev);
Weidong Han0a920352008-12-02 21:24:23 +0800476int kvm_deassign_device(struct kvm *kvm,
477 struct kvm_assigned_dev_kernel *assigned_dev);
Joerg Roedel19de40a2008-12-03 14:43:34 +0100478#else /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300479static inline int kvm_iommu_map_pages(struct kvm *kvm,
480 gfn_t base_gfn,
481 unsigned long npages)
482{
483 return 0;
484}
485
Weidong Han260782b2008-12-02 21:03:39 +0800486static inline int kvm_iommu_map_guest(struct kvm *kvm)
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300487{
488 return -ENODEV;
489}
490
491static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
492{
493 return 0;
494}
Weidong Han260782b2008-12-02 21:03:39 +0800495
496static inline int kvm_assign_device(struct kvm *kvm,
497 struct kvm_assigned_dev_kernel *assigned_dev)
498{
499 return 0;
500}
Weidong Han0a920352008-12-02 21:24:23 +0800501
502static inline int kvm_deassign_device(struct kvm *kvm,
503 struct kvm_assigned_dev_kernel *assigned_dev)
504{
505 return 0;
506}
Joerg Roedel19de40a2008-12-03 14:43:34 +0100507#endif /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300508
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200509static inline void kvm_guest_enter(void)
510{
Christian Borntraegere56a7a22007-10-18 14:39:10 +0200511 account_system_vtime(current);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200512 current->flags |= PF_VCPU;
513}
514
515static inline void kvm_guest_exit(void)
516{
Christian Borntraegere56a7a22007-10-18 14:39:10 +0200517 account_system_vtime(current);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200518 current->flags &= ~PF_VCPU;
519}
520
Avi Kivity1755fbc2007-11-21 14:44:45 +0200521static inline gpa_t gfn_to_gpa(gfn_t gfn)
522{
523 return (gpa_t)gfn << PAGE_SHIFT;
524}
Avi Kivity6aa8b732006-12-10 02:21:36 -0800525
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300526static inline hpa_t pfn_to_hpa(pfn_t pfn)
527{
528 return (hpa_t)pfn << PAGE_SHIFT;
529}
530
Marcelo Tosatti2f599712008-05-27 12:10:20 -0300531static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
Avi Kivity2f52d582008-01-16 12:49:30 +0200532{
533 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
534}
535
Avi Kivityba1389b2007-11-18 16:24:12 +0200536enum kvm_stat_kind {
537 KVM_STAT_VM,
538 KVM_STAT_VCPU,
539};
540
Hollis Blanchard417bc302007-10-31 17:24:23 -0500541struct kvm_stats_debugfs_item {
542 const char *name;
543 int offset;
Avi Kivityba1389b2007-11-18 16:24:12 +0200544 enum kvm_stat_kind kind;
Hollis Blanchard417bc302007-10-31 17:24:23 -0500545 struct dentry *dentry;
546};
547extern struct kvm_stats_debugfs_item debugfs_entries[];
Hollis Blanchard76f7c872008-04-15 16:05:42 -0500548extern struct dentry *kvm_debugfs_dir;
Feng(Eric) Liud4c9ff22008-04-10 08:47:53 -0400549
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200550#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
551static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
552{
553 if (unlikely(vcpu->kvm->mmu_notifier_count))
554 return 1;
555 /*
556 * Both reads happen under the mmu_lock and both values are
557 * modified under mmu_lock, so there's no need of smb_rmb()
558 * here in between, otherwise mmu_notifier_count should be
559 * read before mmu_notifier_seq, see
560 * mmu_notifier_invalidate_range_end write side.
561 */
562 if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
563 return 1;
564 return 0;
565}
566#endif
567
Avi Kivity399ec802008-11-19 13:58:46 +0200568#ifdef CONFIG_HAVE_KVM_IRQCHIP
569
570#define KVM_MAX_IRQ_ROUTES 1024
571
572int kvm_setup_default_irq_routing(struct kvm *kvm);
573int kvm_set_irq_routing(struct kvm *kvm,
574 const struct kvm_irq_routing_entry *entries,
575 unsigned nr,
576 unsigned flags);
577void kvm_free_irq_routing(struct kvm *kvm);
578
579#else
580
581static inline void kvm_free_irq_routing(struct kvm *kvm) {}
582
583#endif
584
Gregory Haskins721eecb2009-05-20 10:30:49 -0400585#ifdef CONFIG_HAVE_KVM_EVENTFD
586
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400587void kvm_eventfd_init(struct kvm *kvm);
Gregory Haskins721eecb2009-05-20 10:30:49 -0400588int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
589void kvm_irqfd_release(struct kvm *kvm);
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400590int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
Gregory Haskins721eecb2009-05-20 10:30:49 -0400591
592#else
593
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400594static inline void kvm_eventfd_init(struct kvm *kvm) {}
Gregory Haskins721eecb2009-05-20 10:30:49 -0400595static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
596{
597 return -EINVAL;
598}
599
600static inline void kvm_irqfd_release(struct kvm *kvm) {}
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400601static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
602{
603 return -ENOSYS;
604}
Gregory Haskins721eecb2009-05-20 10:30:49 -0400605
606#endif /* CONFIG_HAVE_KVM_EVENTFD */
607
Gleb Natapov73880c82009-06-09 15:56:28 +0300608#ifdef CONFIG_KVM_APIC_ARCHITECTURE
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300609static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
610{
Marcelo Tosattid3efc8e2009-06-17 10:07:59 -0300611 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300612}
Avi Kivity6aa8b732006-12-10 02:21:36 -0800613#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +0300614
615#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
616
617long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
618 unsigned long arg);
619
620#else
621
622static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
623 unsigned long arg)
624{
625 return -ENOTTY;
626}
627
Gleb Natapov73880c82009-06-09 15:56:28 +0300628#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +0300629
Avi Kivitya8eeb042010-05-10 12:34:53 +0300630static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
631{
632 set_bit(req, &vcpu->requests);
633}
634
635static inline bool kvm_make_check_request(int req, struct kvm_vcpu *vcpu)
636{
637 return test_and_set_bit(req, &vcpu->requests);
638}
639
640static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
641{
Avi Kivity07198372010-05-10 13:08:26 +0300642 if (test_bit(req, &vcpu->requests)) {
643 clear_bit(req, &vcpu->requests);
644 return true;
645 } else {
646 return false;
647 }
Avi Kivitya8eeb042010-05-10 12:34:53 +0300648}
649
Avi Kivitybfd99ff2009-08-26 14:57:50 +0300650#endif
651