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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>
Paul Gortmaker187f1882011-11-23 20:12:59 -050016#include <linux/bug.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080017#include <linux/mm.h>
Eric B Munsonb297e672011-10-10 11:46:15 -040018#include <linux/mmu_notifier.h>
Avi Kivity15ad7142007-07-11 18:17:21 +030019#include <linux/preempt.h>
Sheng Yang0937c482008-11-24 14:32:53 +080020#include <linux/msi.h>
Jan Kiszkad89f5ef2010-11-09 17:02:49 +010021#include <linux/slab.h>
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +020022#include <linux/rcupdate.h>
Jan Kiszkabd801582011-09-12 11:26:22 +020023#include <linux/ratelimit.h>
Xiao Guangrong83f09222012-08-03 15:39:59 +080024#include <linux/err.h>
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +010025#include <linux/irqflags.h>
Frederic Weisbecker521921b2013-05-16 01:21:38 +020026#include <linux/context_tracking.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040027#include <asm/signal.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080028
Avi Kivity6aa8b732006-12-10 02:21:36 -080029#include <linux/kvm.h>
Ingo Molnar102d8322007-02-19 14:37:47 +020030#include <linux/kvm_para.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080031
Avi Kivityedf88412007-12-16 11:02:48 +020032#include <linux/kvm_types.h>
Hollis Blanchardd77a39d2007-12-03 15:30:23 -060033
Avi Kivityedf88412007-12-16 11:02:48 +020034#include <asm/kvm_host.h>
Zhang Xiantaod657a982007-12-14 09:41:22 +080035
Avi Kivitycef4dea2010-01-20 12:01:20 +020036#ifndef KVM_MMIO_SIZE
37#define KVM_MMIO_SIZE 8
38#endif
39
Avi Kivity6aa8b732006-12-10 02:21:36 -080040/*
Xiao Guangrong67b29202012-08-21 10:58:45 +080041 * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used
42 * in kvm, other bits are visible for userspace which are defined in
43 * include/linux/kvm_h.
44 */
45#define KVM_MEMSLOT_INVALID (1UL << 16)
46
Xiao Guangrong87da7e62012-10-24 14:07:59 +080047/* Two fragments for cross MMIO pages. */
48#define KVM_MAX_MMIO_FRAGMENTS 2
Avi Kivityf78146b2012-04-18 19:22:47 +030049
50/*
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080051 * For the normal pfn, the highest 12 bits should be zero,
Xiao Guangrong81c52c52012-10-16 20:10:59 +080052 * so we can mask bit 62 ~ bit 52 to indicate the error pfn,
53 * mask bit 63 to indicate the noslot pfn.
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080054 */
Xiao Guangrong81c52c52012-10-16 20:10:59 +080055#define KVM_PFN_ERR_MASK (0x7ffULL << 52)
56#define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52)
57#define KVM_PFN_NOSLOT (0x1ULL << 63)
Xiao Guangrong6c8ee572012-08-03 15:37:54 +080058
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080059#define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK)
60#define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1)
Xiao Guangrong81c52c52012-10-16 20:10:59 +080061#define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2)
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080062
Xiao Guangrong81c52c52012-10-16 20:10:59 +080063/*
64 * error pfns indicate that the gfn is in slot but faild to
65 * translate it to pfn on host.
66 */
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080067static inline bool is_error_pfn(pfn_t pfn)
Xiao Guangrong83f09222012-08-03 15:39:59 +080068{
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080069 return !!(pfn & KVM_PFN_ERR_MASK);
Xiao Guangrong83f09222012-08-03 15:39:59 +080070}
71
Xiao Guangrong81c52c52012-10-16 20:10:59 +080072/*
73 * error_noslot pfns indicate that the gfn can not be
74 * translated to pfn - it is not in slot or failed to
75 * translate it to pfn.
76 */
77static inline bool is_error_noslot_pfn(pfn_t pfn)
Xiao Guangrong83f09222012-08-03 15:39:59 +080078{
Xiao Guangrong81c52c52012-10-16 20:10:59 +080079 return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK);
Xiao Guangrong83f09222012-08-03 15:39:59 +080080}
81
Xiao Guangrong81c52c52012-10-16 20:10:59 +080082/* noslot pfn indicates that the gfn is not in slot. */
83static inline bool is_noslot_pfn(pfn_t pfn)
Xiao Guangrong83f09222012-08-03 15:39:59 +080084{
Xiao Guangrong81c52c52012-10-16 20:10:59 +080085 return pfn == KVM_PFN_NOSLOT;
Xiao Guangrong83f09222012-08-03 15:39:59 +080086}
87
Dominik Dingelbf640872013-07-26 15:04:07 +020088/*
89 * architectures with KVM_HVA_ERR_BAD other than PAGE_OFFSET (e.g. s390)
90 * provide own defines and kvm_is_error_hva
91 */
92#ifndef KVM_HVA_ERR_BAD
93
Xiao Guangrong7068d092012-08-21 11:02:22 +080094#define KVM_HVA_ERR_BAD (PAGE_OFFSET)
95#define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE)
Xiao Guangrongca3a4902012-08-21 11:01:50 +080096
97static inline bool kvm_is_error_hva(unsigned long addr)
98{
Xiao Guangrong7068d092012-08-21 11:02:22 +080099 return addr >= PAGE_OFFSET;
Xiao Guangrongca3a4902012-08-21 11:01:50 +0800100}
101
Dominik Dingelbf640872013-07-26 15:04:07 +0200102#endif
103
Xiao Guangrong6cede2e2012-08-03 15:41:22 +0800104#define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
105
Xiao Guangrong9c5b1172012-08-03 15:43:51 +0800106static inline bool is_error_page(struct page *page)
Xiao Guangrong6cede2e2012-08-03 15:41:22 +0800107{
108 return IS_ERR(page);
109}
110
Avi Kivity6aa8b732006-12-10 02:21:36 -0800111/*
Avi Kivityd9e368d2007-06-07 19:18:30 +0300112 * vcpu->requests bit members
113 */
Avi Kivity3176bc32007-10-16 17:22:08 +0200114#define KVM_REQ_TLB_FLUSH 0
Avi Kivity2f52d582008-01-16 12:49:30 +0200115#define KVM_REQ_MIGRATE_TIMER 1
Avi Kivityb209749f2007-10-22 16:50:39 +0200116#define KVM_REQ_REPORT_TPR_ACCESS 2
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500117#define KVM_REQ_MMU_RELOAD 3
Joerg Roedel71c4dfa2008-02-26 16:49:16 +0100118#define KVM_REQ_TRIPLE_FAULT 4
Marcelo Tosatti06e05642008-06-06 16:37:36 -0300119#define KVM_REQ_PENDING_TIMER 5
Marcelo Tosattid7690172008-09-08 15:23:48 -0300120#define KVM_REQ_UNHALT 6
Marcelo Tosatti4731d4c2008-09-23 13:18:39 -0300121#define KVM_REQ_MMU_SYNC 7
Zachary Amsden34c238a2010-09-18 14:38:14 -1000122#define KVM_REQ_CLOCK_UPDATE 8
Marcelo Tosatti32f88402009-05-07 17:55:12 -0300123#define KVM_REQ_KICK 9
Avi Kivity02daab22009-12-30 12:40:26 +0200124#define KVM_REQ_DEACTIVATE_FPU 10
Avi Kivity3842d132010-07-27 12:30:24 +0300125#define KVM_REQ_EVENT 11
Gleb Natapovaf585b92010-10-14 11:22:46 +0200126#define KVM_REQ_APF_HALT 12
Glauber Costac9aaa892011-07-11 15:28:14 -0400127#define KVM_REQ_STEAL_UPDATE 13
Avi Kivity7460fb4a2011-09-20 13:43:14 +0300128#define KVM_REQ_NMI 14
Jan Kiszka730dca42013-04-28 10:50:52 +0200129#define KVM_REQ_PMU 15
130#define KVM_REQ_PMI 16
131#define KVM_REQ_WATCHDOG 17
132#define KVM_REQ_MASTERCLOCK_UPDATE 18
133#define KVM_REQ_MCLOCK_INPROGRESS 19
134#define KVM_REQ_EPR_EXIT 20
135#define KVM_REQ_SCAN_IOAPIC 21
Marcelo Tosatti0061d532013-05-09 20:21:41 -0300136#define KVM_REQ_GLOBAL_CLOCK_UPDATE 22
Avi Kivity6aa8b732006-12-10 02:21:36 -0800137
Alex Williamson7a844282012-09-21 11:58:03 -0600138#define KVM_USERSPACE_IRQ_SOURCE_ID 0
139#define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
Sheng Yang5550af42008-10-15 20:15:06 +0800140
Michael S. Tsirkin6c474692009-06-29 22:24:26 +0300141struct kvm;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800142struct kvm_vcpu;
Rusty Russellc16f8622007-07-30 21:12:19 +1000143extern struct kmem_cache *kvm_vcpu_cache;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800144
Geoff Levandfc1b7492013-04-05 19:20:30 +0000145extern raw_spinlock_t kvm_lock;
146extern struct list_head vm_list;
147
Sasha Levin743eeb02011-07-27 16:00:48 +0300148struct kvm_io_range {
149 gpa_t addr;
150 int len;
151 struct kvm_io_device *dev;
152};
153
Amos Kong786a9f82012-03-09 12:17:40 +0800154#define NR_IOBUS_DEVS 1000
Amos Konga13007162012-03-09 12:17:32 +0800155
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400156struct kvm_io_bus {
Amos Kong6ea34c92013-05-25 06:44:15 +0800157 int dev_count;
158 int ioeventfd_count;
Amos Konga13007162012-03-09 12:17:32 +0800159 struct kvm_io_range range[];
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400160};
161
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200162enum kvm_bus {
163 KVM_MMIO_BUS,
164 KVM_PIO_BUS,
Cornelia Huck060f0ce2013-02-28 12:33:19 +0100165 KVM_VIRTIO_CCW_NOTIFY_BUS,
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200166 KVM_NR_BUSES
167};
168
169int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
170 int len, const void *val);
Cornelia Huck126a5af2013-07-03 16:30:53 +0200171int kvm_io_bus_write_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
172 int len, const void *val, long cookie);
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200173int 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 +0300174 void *val);
Cornelia Huck126a5af2013-07-03 16:30:53 +0200175int kvm_io_bus_read_cookie(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
176 int len, void *val, long cookie);
Sasha Levin743eeb02011-07-27 16:00:48 +0300177int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
178 int len, struct kvm_io_device *dev);
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200179int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
180 struct kvm_io_device *dev);
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400181
Gleb Natapovaf585b92010-10-14 11:22:46 +0200182#ifdef CONFIG_KVM_ASYNC_PF
183struct kvm_async_pf {
184 struct work_struct work;
185 struct list_head link;
186 struct list_head queue;
187 struct kvm_vcpu *vcpu;
188 struct mm_struct *mm;
189 gva_t gva;
190 unsigned long addr;
191 struct kvm_arch_async_pf arch;
192 struct page *page;
193 bool done;
194};
195
196void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
197void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
198int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
199 struct kvm_arch_async_pf *arch);
Gleb Natapov344d9582010-10-14 11:22:50 +0200200int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
Gleb Natapovaf585b92010-10-14 11:22:46 +0200201#endif
202
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800203enum {
204 OUTSIDE_GUEST_MODE,
205 IN_GUEST_MODE,
Avi Kivityc1427862012-05-14 15:44:06 +0300206 EXITING_GUEST_MODE,
207 READING_SHADOW_PAGE_TABLES,
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800208};
209
Avi Kivityf78146b2012-04-18 19:22:47 +0300210/*
211 * Sometimes a large or cross-page mmio needs to be broken up into separate
212 * exits for userspace servicing.
213 */
214struct kvm_mmio_fragment {
215 gpa_t gpa;
216 void *data;
217 unsigned len;
218};
219
Zhang Xiantaod657a982007-12-14 09:41:22 +0800220struct kvm_vcpu {
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800221 struct kvm *kvm;
Hollis Blanchard31bb1172008-01-28 17:42:34 -0600222#ifdef CONFIG_PREEMPT_NOTIFIERS
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800223 struct preempt_notifier preempt_notifier;
Hollis Blanchard31bb1172008-01-28 17:42:34 -0600224#endif
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800225 int cpu;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800226 int vcpu_id;
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800227 int srcu_idx;
228 int mode;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800229 unsigned long requests;
Jan Kiszkad0bfb942008-12-15 13:52:10 +0100230 unsigned long guest_debug;
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800231
232 struct mutex mutex;
233 struct kvm_run *run;
Marcelo Tosattif656ce02009-12-23 14:35:25 -0200234
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800235 int fpu_active;
Dexuan Cui2acf9232010-06-10 11:27:12 +0800236 int guest_fpu_loaded, guest_xcr0_loaded;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800237 wait_queue_head_t wq;
Rik van Riel34bb10b2011-02-01 09:52:41 -0500238 struct pid *pid;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800239 int sigset_active;
240 sigset_t sigset;
241 struct kvm_vcpu_stat stat;
242
243#ifdef CONFIG_HAS_IOMEM
244 int mmio_needed;
245 int mmio_read_completed;
246 int mmio_is_write;
Avi Kivityf78146b2012-04-18 19:22:47 +0300247 int mmio_cur_fragment;
248 int mmio_nr_fragments;
249 struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS];
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800250#endif
Zhang Xiantaod657a982007-12-14 09:41:22 +0800251
Gleb Natapovaf585b92010-10-14 11:22:46 +0200252#ifdef CONFIG_KVM_ASYNC_PF
253 struct {
254 u32 queued;
255 struct list_head queue;
256 struct list_head done;
257 spinlock_t lock;
258 } async_pf;
259#endif
260
Raghavendra K T4c088492012-07-18 19:07:46 +0530261#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
262 /*
263 * Cpu relax intercept or pause loop exit optimization
264 * in_spin_loop: set when a vcpu does a pause loop exit
265 * or cpu relax intercepted.
266 * dy_eligible: indicates whether vcpu is eligible for directed yield.
267 */
268 struct {
269 bool in_spin_loop;
270 bool dy_eligible;
271 } spin_loop;
272#endif
Raghavendra K T3a08a8f2013-03-04 23:32:07 +0530273 bool preempted;
Zhang Xiantaod657a982007-12-14 09:41:22 +0800274 struct kvm_vcpu_arch arch;
275};
276
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800277static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
278{
279 return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
280}
281
Takuya Yoshikawa660c22c2010-04-13 22:47:24 +0900282/*
283 * Some of the bitops functions do not support too long bitmaps.
284 * This number must be determined not to exceed such limits.
285 */
286#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
287
Avi Kivity6aa8b732006-12-10 02:21:36 -0800288struct kvm_memory_slot {
289 gfn_t base_gfn;
290 unsigned long npages;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800291 unsigned long *dirty_bitmap;
Takuya Yoshikawadb3fe4e2012-02-08 13:02:18 +0900292 struct kvm_arch_memory_slot arch;
Izik Eidus8a7ae052007-10-18 11:09:33 +0200293 unsigned long userspace_addr;
Alex Williamson6104f472012-12-10 10:33:26 -0700294 u32 flags;
Alex Williamson1e702d92012-12-10 10:33:32 -0700295 short id;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800296};
297
Takuya Yoshikawa87bf6e72010-04-12 19:35:35 +0900298static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
299{
300 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
301}
302
Avi Kivity399ec802008-11-19 13:58:46 +0200303struct kvm_kernel_irq_routing_entry {
304 u32 gsi;
Michael S. Tsirkin5116d8f2009-07-26 17:10:01 +0300305 u32 type;
Gleb Natapov49256632009-02-04 17:28:14 +0200306 int (*set)(struct kvm_kernel_irq_routing_entry *e,
Yang Zhangaa2fbe62013-04-11 19:21:40 +0800307 struct kvm *kvm, int irq_source_id, int level,
308 bool line_status);
Avi Kivity399ec802008-11-19 13:58:46 +0200309 union {
310 struct {
311 unsigned irqchip;
312 unsigned pin;
313 } irqchip;
Sheng Yang79950e12009-02-10 13:57:06 +0800314 struct msi_msg msi;
Avi Kivity399ec802008-11-19 13:58:46 +0200315 };
Gleb Natapov46e624b2009-08-24 11:54:20 +0300316 struct hlist_node link;
317};
318
Alexander Grafa725d562013-04-17 13:29:30 +0200319#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
Gleb Natapov3e71f882009-08-24 11:54:21 +0300320
Gleb Natapov46e624b2009-08-24 11:54:20 +0300321struct kvm_irq_routing_table {
Alexander Graf8175e5b2013-04-15 10:42:33 +0200322 int chip[KVM_NR_IRQCHIPS][KVM_IRQCHIP_NUM_PINS];
Gleb Natapov46e624b2009-08-24 11:54:20 +0300323 struct kvm_kernel_irq_routing_entry *rt_entries;
324 u32 nr_rt_entries;
325 /*
326 * Array indexed by gsi. Each entry contains list of irq chips
327 * the gsi is connected to.
328 */
329 struct hlist_head map[0];
Avi Kivity399ec802008-11-19 13:58:46 +0200330};
331
Gleb Natapov3e71f882009-08-24 11:54:21 +0300332#else
333
334struct kvm_irq_routing_table {};
335
336#endif
337
Alex Williamson07432472012-12-10 10:33:15 -0700338#ifndef KVM_PRIVATE_MEM_SLOTS
339#define KVM_PRIVATE_MEM_SLOTS 0
340#endif
341
Xiao Guangrong93a5cef2011-11-24 17:37:48 +0800342#ifndef KVM_MEM_SLOTS_NUM
Alex Williamsonbbacc0c2012-12-10 10:33:09 -0700343#define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
Xiao Guangrong93a5cef2011-11-24 17:37:48 +0800344#endif
345
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800346/*
347 * Note:
348 * memslots are not sorted by id anymore, please use id_to_memslot()
349 * to get the memslot by its id.
350 */
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200351struct kvm_memslots {
Gleb Natapov49c77542010-10-18 15:22:23 +0200352 u64 generation;
Xiao Guangrong93a5cef2011-11-24 17:37:48 +0800353 struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800354 /* The mapping table from slot id to the index in memslots[]. */
Alex Williamson1e702d92012-12-10 10:33:32 -0700355 short id_to_index[KVM_MEM_SLOTS_NUM];
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200356};
357
Avi Kivity6aa8b732006-12-10 02:21:36 -0800358struct kvm {
Marcelo Tosattiaaee2c92007-12-20 19:18:26 -0500359 spinlock_t mmu_lock;
Marcelo Tosatti79fac952009-12-23 14:35:26 -0200360 struct mutex slots_lock;
Avi Kivity6d4e4c42007-11-21 16:41:05 +0200361 struct mm_struct *mm; /* userspace tied to this vm */
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200362 struct kvm_memslots *memslots;
Marcelo Tosattibc6678a2009-12-23 14:35:21 -0200363 struct srcu_struct srcu;
Gleb Natapov73880c82009-06-09 15:56:28 +0300364#ifdef CONFIG_KVM_APIC_ARCHITECTURE
365 u32 bsp_vcpu_id;
Gleb Natapov73880c82009-06-09 15:56:28 +0300366#endif
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000367 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
Gleb Natapov73880c82009-06-09 15:56:28 +0300368 atomic_t online_vcpus;
Rik van Riel217ece62011-02-01 09:53:28 -0500369 int last_boosted_vcpu;
Avi Kivity133de902007-02-12 00:54:44 -0800370 struct list_head vm_list;
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300371 struct mutex lock;
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200372 struct kvm_io_bus *buses[KVM_NR_BUSES];
Gregory Haskins721eecb2009-05-20 10:30:49 -0400373#ifdef CONFIG_HAVE_KVM_EVENTFD
374 struct {
375 spinlock_t lock;
376 struct list_head items;
Alex Williamson7a844282012-09-21 11:58:03 -0600377 struct list_head resampler_list;
378 struct mutex resampler_lock;
Gregory Haskins721eecb2009-05-20 10:30:49 -0400379 } irqfds;
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400380 struct list_head ioeventfds;
Gregory Haskins721eecb2009-05-20 10:30:49 -0400381#endif
Avi Kivityba1389b2007-11-18 16:24:12 +0200382 struct kvm_vm_stat stat;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800383 struct kvm_arch arch;
Izik Eidusd39f13b2008-03-30 16:01:25 +0300384 atomic_t users_count;
Laurent Vivier5f94c172008-05-30 16:05:54 +0200385#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
Laurent Vivier5f94c172008-05-30 16:05:54 +0200386 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
Sasha Levin2b3c2462011-07-20 20:59:00 +0300387 spinlock_t ring_lock;
388 struct list_head coalesced_zones;
Laurent Vivier5f94c172008-05-30 16:05:54 +0200389#endif
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200390
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300391 struct mutex irq_lock;
Avi Kivity75858a82009-01-04 17:10:50 +0200392#ifdef CONFIG_HAVE_KVM_IRQCHIP
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200393 /*
394 * Update side is protected by irq_lock and,
395 * if configured, irqfds.lock.
396 */
Arnd Bergmann4b6a2872010-03-04 15:59:23 +0100397 struct kvm_irq_routing_table __rcu *irq_routing;
Avi Kivity75858a82009-01-04 17:10:50 +0200398 struct hlist_head mask_notifier_list;
Gleb Natapov136bdfe2009-08-24 11:54:23 +0300399 struct hlist_head irq_ack_notifier_list;
Avi Kivity75858a82009-01-04 17:10:50 +0200400#endif
401
Marc Zyngier36c1ed82012-06-15 15:07:24 -0400402#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200403 struct mmu_notifier mmu_notifier;
404 unsigned long mmu_notifier_seq;
405 long mmu_notifier_count;
406#endif
Avi Kivity5c663a12010-12-08 18:04:51 +0200407 long tlbs_dirty;
Scott Wood07f0a7b2013-04-25 14:11:23 +0000408 struct list_head devices;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800409};
410
Christoffer Dalla737f252012-06-03 21:17:48 +0300411#define kvm_err(fmt, ...) \
412 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
413#define kvm_info(fmt, ...) \
414 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
415#define kvm_debug(fmt, ...) \
416 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
417#define kvm_pr_unimpl(fmt, ...) \
418 pr_err_ratelimited("kvm [%i]: " fmt, \
419 task_tgid_nr(current), ## __VA_ARGS__)
Rusty Russellf0242472007-08-01 10:48:02 +1000420
Christoffer Dalla737f252012-06-03 21:17:48 +0300421/* The guest did something we don't support. */
422#define vcpu_unimpl(vcpu, fmt, ...) \
423 kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
Avi Kivity6aa8b732006-12-10 02:21:36 -0800424
Gleb Natapov988a2ca2009-06-09 15:56:29 +0300425static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
426{
427 smp_rmb();
428 return kvm->vcpus[i];
429}
430
431#define kvm_for_each_vcpu(idx, vcpup, kvm) \
Jeff Mahoneyb42fc3c2011-04-12 21:30:17 -0400432 for (idx = 0; \
433 idx < atomic_read(&kvm->online_vcpus) && \
434 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
435 idx++)
Gleb Natapov988a2ca2009-06-09 15:56:29 +0300436
Xiao Guangrongbe6ba0f2011-11-24 17:39:18 +0800437#define kvm_for_each_memslot(memslot, slots) \
438 for (memslot = &slots->memslots[0]; \
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800439 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
440 memslot++)
Xiao Guangrongbe6ba0f2011-11-24 17:39:18 +0800441
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000442int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
443void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
444
Michael S. Tsirkin9fc77442012-09-16 11:50:30 +0300445int __must_check vcpu_load(struct kvm_vcpu *vcpu);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200446void vcpu_put(struct kvm_vcpu *vcpu);
447
Alexander Grafa725d562013-04-17 13:29:30 +0200448#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
Cornelia Hucka0f155e2013-02-28 12:33:18 +0100449int kvm_irqfd_init(void);
450void kvm_irqfd_exit(void);
451#else
452static inline int kvm_irqfd_init(void)
453{
454 return 0;
455}
456
457static inline void kvm_irqfd_exit(void)
458{
459}
460#endif
Avi Kivity0ee75be2010-04-28 15:39:01 +0300461int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
Rusty Russellc16f8622007-07-30 21:12:19 +1000462 struct module *module);
Zhang Xiantaocb498ea2007-11-14 20:39:31 +0800463void kvm_exit(void);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800464
Izik Eidusd39f13b2008-03-30 16:01:25 +0300465void kvm_get_kvm(struct kvm *kvm);
466void kvm_put_kvm(struct kvm *kvm);
Alex Williamson116c14c2012-12-21 08:20:16 -0700467void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new,
468 u64 last_generation);
Izik Eidusd39f13b2008-03-30 16:01:25 +0300469
Lai Jiangshan90d83dc2010-04-19 17:41:23 +0800470static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
471{
472 return rcu_dereference_check(kvm->memslots,
473 srcu_read_lock_held(&kvm->srcu)
474 || lockdep_is_held(&kvm->slots_lock));
475}
476
Xiao Guangrong28a37542011-11-24 19:04:35 +0800477static inline struct kvm_memory_slot *
478id_to_memslot(struct kvm_memslots *slots, int id)
479{
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800480 int index = slots->id_to_index[id];
481 struct kvm_memory_slot *slot;
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800482
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800483 slot = &slots->memslots[index];
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800484
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800485 WARN_ON(slot->id != id);
486 return slot;
Xiao Guangrong28a37542011-11-24 19:04:35 +0800487}
488
Takuya Yoshikawa74d07272013-02-27 19:43:44 +0900489/*
490 * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
491 * - create a new memory slot
492 * - delete an existing memory slot
493 * - modify an existing memory slot
494 * -- move it in the guest physical memory space
495 * -- just change its flags
496 *
497 * Since flags can be changed by some of these operations, the following
498 * differentiation is the best we can do for __kvm_set_memory_region():
499 */
500enum kvm_mr_change {
501 KVM_MR_CREATE,
502 KVM_MR_DELETE,
503 KVM_MR_MOVE,
504 KVM_MR_FLAGS_ONLY,
505};
506
Izik Eidus210c7c42007-10-24 23:52:57 +0200507int kvm_set_memory_region(struct kvm *kvm,
Takuya Yoshikawa47ae31e2013-02-27 19:43:00 +0900508 struct kvm_userspace_memory_region *mem);
Sheng Yangf78e0e22007-10-29 09:40:42 +0800509int __kvm_set_memory_region(struct kvm *kvm,
Takuya Yoshikawa47ae31e2013-02-27 19:43:00 +0900510 struct kvm_userspace_memory_region *mem);
Takuya Yoshikawadb3fe4e2012-02-08 13:02:18 +0900511void kvm_arch_free_memslot(struct kvm_memory_slot *free,
512 struct kvm_memory_slot *dont);
513int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages);
Takuya Yoshikawae59dbe02013-07-04 13:40:29 +0900514void kvm_arch_memslots_updated(struct kvm *kvm);
Marcelo Tosattif7784b82009-12-23 14:35:18 -0200515int kvm_arch_prepare_memory_region(struct kvm *kvm,
516 struct kvm_memory_slot *memslot,
Marcelo Tosattif7784b82009-12-23 14:35:18 -0200517 struct kvm_userspace_memory_region *mem,
Takuya Yoshikawa7b6195a2013-02-27 19:44:34 +0900518 enum kvm_mr_change change);
Marcelo Tosattif7784b82009-12-23 14:35:18 -0200519void kvm_arch_commit_memory_region(struct kvm *kvm,
Zhang Xiantao0de10342007-11-20 16:25:04 +0800520 struct kvm_userspace_memory_region *mem,
Takuya Yoshikawa84826442013-02-27 19:45:25 +0900521 const struct kvm_memory_slot *old,
522 enum kvm_mr_change change);
Takuya Yoshikawadb3fe4e2012-02-08 13:02:18 +0900523bool kvm_largepages_enabled(void);
Marcelo Tosatti54dee992009-06-11 12:07:44 -0300524void kvm_disable_largepages(void);
Marcelo Tosatti2df72e92012-08-24 15:54:57 -0300525/* flush all memory translations */
526void kvm_arch_flush_shadow_all(struct kvm *kvm);
527/* flush memory translations pointing to 'slot' */
528void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
529 struct kvm_memory_slot *slot);
Marcelo Tosattia983fb22009-12-23 14:35:23 -0200530
Xiao Guangrong48987782010-08-22 19:11:43 +0800531int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages,
532 int nr_pages);
533
Avi Kivity954bbbc2007-03-30 14:02:32 +0300534struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300535unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
Xiao Guangrong4d8b81a2012-08-21 11:02:51 +0800536unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
Izik Eidusb4231d62007-11-20 11:49:33 +0200537void kvm_release_page_clean(struct page *page);
538void kvm_release_page_dirty(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500539void kvm_set_page_dirty(struct page *page);
540void kvm_set_page_accessed(struct page *page);
541
Xiao Guangrong365fb3f2010-08-28 19:24:13 +0800542pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti612819c2010-10-22 14:18:18 -0200543pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async,
544 bool write_fault, bool *writable);
Anthony Liguori35149e22008-04-02 14:46:56 -0500545pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti612819c2010-10-22 14:18:18 -0200546pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
547 bool *writable);
Xiao Guangrongd5661042012-07-17 21:56:16 +0800548pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
Xiao Guangrong037d92d2012-08-21 10:59:12 +0800549pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn);
550
Xiao Guangrong32cad842012-08-03 15:42:52 +0800551void kvm_release_pfn_dirty(pfn_t pfn);
Anthony Liguori35149e22008-04-02 14:46:56 -0500552void kvm_release_pfn_clean(pfn_t pfn);
553void kvm_set_pfn_dirty(pfn_t pfn);
554void kvm_set_pfn_accessed(pfn_t pfn);
555void kvm_get_pfn(pfn_t pfn);
556
Izik Eidus195aefd2007-10-01 22:14:18 +0200557int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
558 int len);
Marcelo Tosatti7ec54582007-12-20 19:18:23 -0500559int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
560 unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200561int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
Gleb Natapove03b6442011-07-11 15:28:11 -0400562int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
563 void *data, unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200564int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
565 int offset, int len);
566int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
567 unsigned long len);
Gleb Natapov49c77542010-10-18 15:22:23 +0200568int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
569 void *data, unsigned long len);
570int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
Andrew Honig8f964522013-03-29 09:35:21 -0700571 gpa_t gpa, unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200572int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
573int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800574struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
Izik Eiduse0d62c72007-10-24 23:57:46 +0200575int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
Joerg Roedel8f0b1ab2010-01-28 12:37:56 +0100576unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800577void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
Gleb Natapov49c77542010-10-18 15:22:23 +0200578void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot,
579 gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800580
Hollis Blanchard8776e512007-10-31 17:24:24 -0500581void kvm_vcpu_block(struct kvm_vcpu *vcpu);
Christoffer Dallb6d33832012-03-08 16:44:24 -0500582void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
Konstantin Weitz41628d32012-04-25 15:30:38 +0200583bool kvm_vcpu_yield_to(struct kvm_vcpu *target);
Zhai, Edwind255f4f2009-10-09 18:03:20 +0800584void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800585void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300586void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
587void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Xiao Guangronga4ee1ca2010-11-23 11:13:00 +0800588
Avi Kivityd9e368d2007-06-07 19:18:30 +0300589void kvm_flush_remote_tlbs(struct kvm *kvm);
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500590void kvm_reload_remote_mmus(struct kvm *kvm);
Marcelo Tosattid8281992012-11-27 23:29:01 -0200591void kvm_make_mclock_inprogress_request(struct kvm *kvm);
Yang Zhang3d81bc72013-04-11 19:25:13 +0800592void kvm_make_scan_ioapic_request(struct kvm *kvm);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800593
Carsten Otte043405e2007-10-10 17:16:19 +0200594long kvm_arch_dev_ioctl(struct file *filp,
595 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200596long kvm_arch_vcpu_ioctl(struct file *filp,
597 unsigned int ioctl, unsigned long arg);
Carsten Otte5b1c1492012-01-04 10:25:23 +0100598int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf);
Zhang Xiantao018d00d2007-11-15 23:07:47 +0800599
600int kvm_dev_ioctl_check_extension(long ext);
601
Zhang Xiantao5bb064d2007-11-18 20:29:43 +0800602int kvm_get_dirty_log(struct kvm *kvm,
603 struct kvm_dirty_log *log, int *is_dirty);
604int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
605 struct kvm_dirty_log *log);
606
Carsten Otte1fe779f2007-10-29 16:08:35 +0100607int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
Takuya Yoshikawa47ae31e2013-02-27 19:43:00 +0900608 struct kvm_userspace_memory_region *mem);
Yang Zhangaa2fbe62013-04-11 19:21:40 +0800609int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level,
610 bool line_status);
Carsten Otte1fe779f2007-10-29 16:08:35 +0100611long kvm_arch_vm_ioctl(struct file *filp,
612 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200613
Hollis Blanchardd0752062007-10-31 17:24:25 -0500614int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
615int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
616
Zhang Xiantao8b006792007-11-16 13:05:55 +0800617int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
618 struct kvm_translation *tr);
619
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500620int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
621int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
622int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
623 struct kvm_sregs *sregs);
624int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
625 struct kvm_sregs *sregs);
Marcelo Tosatti62d9f0d2008-04-11 13:24:45 -0300626int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
627 struct kvm_mp_state *mp_state);
628int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
629 struct kvm_mp_state *mp_state);
Jan Kiszkad0bfb942008-12-15 13:52:10 +0100630int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
631 struct kvm_guest_debug *dbg);
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500632int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
633
Zhang Xiantaof8c16bb2007-11-14 20:40:21 +0800634int kvm_arch_init(void *opaque);
635void kvm_arch_exit(void);
Carsten Otte043405e2007-10-10 17:16:19 +0200636
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800637int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
638void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
639
640void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
641void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
642void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
643struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
Avi Kivity26e52152007-11-20 15:30:24 +0200644int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
Marcelo Tosatti42897d82012-11-27 23:29:02 -0200645int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
Hollis Blanchardd40ccc62007-11-19 14:04:43 -0600646void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800647
Alexander Graf10474ae2009-09-15 11:37:46 +0200648int kvm_arch_hardware_enable(void *garbage);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800649void kvm_arch_hardware_disable(void *garbage);
650int kvm_arch_hardware_setup(void);
651void kvm_arch_hardware_unsetup(void);
652void kvm_arch_check_processor_compat(void *rtn);
Zhang Xiantao1d737c82007-12-14 09:35:10 +0800653int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
Christoffer Dallb6d33832012-03-08 16:44:24 -0500654int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800655
Zhang Xiantaod19a9cd2007-11-18 18:43:45 +0800656void kvm_free_physmem(struct kvm *kvm);
657
Takuya Yoshikawac1a7b322012-05-20 13:15:07 +0900658void *kvm_kvzalloc(unsigned long size);
659void kvm_kvfree(const void *addr);
660
Jan Kiszkad89f5ef2010-11-09 17:02:49 +0100661#ifndef __KVM_HAVE_ARCH_VM_ALLOC
662static inline struct kvm *kvm_arch_alloc_vm(void)
663{
664 return kzalloc(sizeof(struct kvm), GFP_KERNEL);
665}
666
667static inline void kvm_arch_free_vm(struct kvm *kvm)
668{
669 kfree(kvm);
670}
671#endif
672
Christoffer Dallb6d33832012-03-08 16:44:24 -0500673static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
674{
Alexander Graf2246f8b2012-03-13 22:35:01 +0100675#ifdef __KVM_HAVE_ARCH_WQP
676 return vcpu->arch.wqp;
677#else
Christoffer Dallb6d33832012-03-08 16:44:24 -0500678 return &vcpu->wq;
Christoffer Dallb6d33832012-03-08 16:44:24 -0500679#endif
Alexander Graf2246f8b2012-03-13 22:35:01 +0100680}
Christoffer Dallb6d33832012-03-08 16:44:24 -0500681
Carsten Ottee08b9632012-01-04 10:25:20 +0100682int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
Zhang Xiantaod19a9cd2007-11-18 18:43:45 +0800683void kvm_arch_destroy_vm(struct kvm *kvm);
Sheng Yangad8ba2c2009-01-06 10:03:02 +0800684void kvm_arch_sync_events(struct kvm *kvm);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800685
Marcelo Tosatti3d808402008-04-11 14:53:26 -0300686int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
Zhang Xiantao57361992007-12-17 14:21:40 +0800687void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
Zhang Xiantao682c59a2007-12-11 20:36:00 +0800688
Xiao Guangronga2766322012-07-26 11:58:59 +0800689bool kvm_is_mmio_pfn(pfn_t pfn);
Xiantao Zhangc77fb9d2008-09-27 10:55:40 +0800690
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300691struct kvm_irq_ack_notifier {
692 struct hlist_node link;
693 unsigned gsi;
694 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
695};
696
697struct kvm_assigned_dev_kernel {
698 struct kvm_irq_ack_notifier ack_notifier;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300699 struct list_head list;
700 int assigned_dev_id;
Zhai, Edwinab9f4ec2010-01-29 14:38:44 +0800701 int host_segnr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300702 int host_busnr;
703 int host_devfn;
Sheng Yangc1e01512009-02-25 17:22:26 +0800704 unsigned int entries_nr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300705 int host_irq;
Mark McLoughlindefaf152008-12-02 12:16:33 +0000706 bool host_irq_disabled;
Jan Kiszka07700a92012-02-28 14:19:54 +0100707 bool pci_2_3;
Sheng Yangc1e01512009-02-25 17:22:26 +0800708 struct msix_entry *host_msix_entries;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300709 int guest_irq;
Jan Kiszka06452112010-11-16 22:30:03 +0100710 struct msix_entry *guest_msix_entries;
Sheng Yang4f906c12008-11-24 14:32:51 +0800711 unsigned long irq_requested_type;
Sheng Yang5550af42008-10-15 20:15:06 +0800712 int irq_source_id;
Weidong Hanb6535742008-12-08 23:29:53 +0800713 int flags;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300714 struct pci_dev *dev;
715 struct kvm *kvm;
Jan Kiszka06452112010-11-16 22:30:03 +0100716 spinlock_t intx_lock;
Jan Kiszkacf9eeac2012-03-14 11:02:11 +0100717 spinlock_t intx_mask_lock;
Jan Kiszka1e001d42010-11-16 22:30:04 +0100718 char irq_name[32];
Alex Williamsonf8fcfd72011-05-10 10:02:39 -0600719 struct pci_saved_state *pci_saved_state;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300720};
Avi Kivity75858a82009-01-04 17:10:50 +0200721
722struct kvm_irq_mask_notifier {
723 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
724 int irq;
725 struct hlist_node link;
726};
727
728void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
729 struct kvm_irq_mask_notifier *kimn);
730void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
731 struct kvm_irq_mask_notifier *kimn);
Gleb Natapov4a994352010-07-11 15:32:23 +0300732void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
733 bool mask);
Avi Kivity75858a82009-01-04 17:10:50 +0200734
Yang Zhangaa2fbe62013-04-11 19:21:40 +0800735int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
736 bool line_status);
Michael S. Tsirkin01f21882012-10-17 18:06:02 +0200737int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level);
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200738int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
Yang Zhangaa2fbe62013-04-11 19:21:40 +0800739 int irq_source_id, int level, bool line_status);
Yang Zhangc7c9c562013-01-25 10:18:51 +0800740bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);
Marcelo Tosatti44882ee2009-01-27 15:12:38 -0200741void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
Xiantao Zhang3de42dc2008-10-06 13:48:45 +0800742void kvm_register_irq_ack_notifier(struct kvm *kvm,
743 struct kvm_irq_ack_notifier *kian);
Marcelo Tosattifa40a822009-06-04 15:08:24 -0300744void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
745 struct kvm_irq_ack_notifier *kian);
Sheng Yang5550af42008-10-15 20:15:06 +0800746int kvm_request_irq_source_id(struct kvm *kvm);
747void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300748
Sheng Yang522c68c2009-04-27 20:35:43 +0800749/* For vcpu->arch.iommu_flags */
750#define KVM_IOMMU_CACHE_COHERENCY 0x1
751
Alex Williamson2a5bab12013-04-16 13:49:18 -0600752#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
Marcelo Tosatti3ad26d82009-12-23 14:35:20 -0200753int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
Alex Williamson32f6daa2012-04-11 09:51:49 -0600754void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
Weidong Han260782b2008-12-02 21:03:39 +0800755int kvm_iommu_map_guest(struct kvm *kvm);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300756int kvm_iommu_unmap_guest(struct kvm *kvm);
Weidong Han260782b2008-12-02 21:03:39 +0800757int kvm_assign_device(struct kvm *kvm,
758 struct kvm_assigned_dev_kernel *assigned_dev);
Weidong Han0a920352008-12-02 21:24:23 +0800759int kvm_deassign_device(struct kvm *kvm,
760 struct kvm_assigned_dev_kernel *assigned_dev);
Alex Williamson2a5bab12013-04-16 13:49:18 -0600761#else
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300762static inline int kvm_iommu_map_pages(struct kvm *kvm,
Jan Kiszkad7a79b62010-10-14 13:59:04 +0200763 struct kvm_memory_slot *slot)
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300764{
765 return 0;
766}
767
Alex Williamson32f6daa2012-04-11 09:51:49 -0600768static inline void kvm_iommu_unmap_pages(struct kvm *kvm,
769 struct kvm_memory_slot *slot)
770{
771}
772
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300773static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
774{
775 return 0;
776}
Alex Williamson2a5bab12013-04-16 13:49:18 -0600777#endif
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300778
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +0100779static inline void kvm_guest_enter(void)
780{
781 unsigned long flags;
782
783 BUG_ON(preemptible());
784
785 local_irq_save(flags);
786 guest_enter();
787 local_irq_restore(flags);
788
Gleb Natapov8fa22062011-05-04 16:31:04 +0300789 /* KVM does not hold any references to rcu protected data when it
790 * switches CPU into a guest mode. In fact switching to a guest mode
791 * is very similar to exiting to userspase from rcu point of view. In
792 * addition CPU may stay in a guest mode for quite a long time (up to
793 * one time slice). Lets treat guest mode as quiescent state, just like
794 * we do with user-mode execution.
795 */
796 rcu_virt_note_context_switch(smp_processor_id());
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200797}
798
799static inline void kvm_guest_exit(void)
800{
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +0100801 unsigned long flags;
802
803 local_irq_save(flags);
804 guest_exit();
805 local_irq_restore(flags);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200806}
807
Paul Mackerras9d4cba72012-01-12 20:09:51 +0000808/*
809 * search_memslots() and __gfn_to_memslot() are here because they are
810 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
811 * gfn_to_memslot() itself isn't here as an inline because that would
812 * bloat other code too much.
813 */
814static inline struct kvm_memory_slot *
815search_memslots(struct kvm_memslots *slots, gfn_t gfn)
816{
817 struct kvm_memory_slot *memslot;
818
819 kvm_for_each_memslot(memslot, slots)
820 if (gfn >= memslot->base_gfn &&
821 gfn < memslot->base_gfn + memslot->npages)
822 return memslot;
823
824 return NULL;
825}
826
827static inline struct kvm_memory_slot *
828__gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
829{
830 return search_memslots(slots, gfn);
831}
832
Gavin Shan66a03502012-08-24 16:50:28 +0800833static inline unsigned long
834__gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn)
835{
836 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE;
837}
838
Xiao Guangrong0ee8dcb2011-03-09 15:41:59 +0800839static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
840{
841 return gfn_to_memslot(kvm, gfn)->id;
842}
843
Takuya Yoshikawafb03cb62012-02-08 12:59:10 +0900844static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
845{
846 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
847 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) -
848 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));
849}
850
Takuya Yoshikawad19a7482012-07-02 17:54:30 +0900851static inline gfn_t
852hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot)
Xiao Guangrong887c08a2010-08-22 19:10:28 +0800853{
Takuya Yoshikawad19a7482012-07-02 17:54:30 +0900854 gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT;
855
856 return slot->base_gfn + gfn_offset;
Xiao Guangrong887c08a2010-08-22 19:10:28 +0800857}
858
Avi Kivity1755fbc2007-11-21 14:44:45 +0200859static inline gpa_t gfn_to_gpa(gfn_t gfn)
860{
861 return (gpa_t)gfn << PAGE_SHIFT;
862}
Avi Kivity6aa8b732006-12-10 02:21:36 -0800863
Joerg Roedelc30a3582010-09-10 17:30:48 +0200864static inline gfn_t gpa_to_gfn(gpa_t gpa)
865{
866 return (gfn_t)(gpa >> PAGE_SHIFT);
867}
868
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300869static inline hpa_t pfn_to_hpa(pfn_t pfn)
870{
871 return (hpa_t)pfn << PAGE_SHIFT;
872}
873
Marcelo Tosatti2f599712008-05-27 12:10:20 -0300874static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
Avi Kivity2f52d582008-01-16 12:49:30 +0200875{
876 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
877}
878
Avi Kivityba1389b2007-11-18 16:24:12 +0200879enum kvm_stat_kind {
880 KVM_STAT_VM,
881 KVM_STAT_VCPU,
882};
883
Hollis Blanchard417bc302007-10-31 17:24:23 -0500884struct kvm_stats_debugfs_item {
885 const char *name;
886 int offset;
Avi Kivityba1389b2007-11-18 16:24:12 +0200887 enum kvm_stat_kind kind;
Hollis Blanchard417bc302007-10-31 17:24:23 -0500888 struct dentry *dentry;
889};
890extern struct kvm_stats_debugfs_item debugfs_entries[];
Hollis Blanchard76f7c872008-04-15 16:05:42 -0500891extern struct dentry *kvm_debugfs_dir;
Feng(Eric) Liud4c9ff22008-04-10 08:47:53 -0400892
Marc Zyngier36c1ed82012-06-15 15:07:24 -0400893#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
Christoffer Dall8ca40a72012-10-14 23:10:18 -0400894static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200895{
Christoffer Dall8ca40a72012-10-14 23:10:18 -0400896 if (unlikely(kvm->mmu_notifier_count))
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200897 return 1;
898 /*
Paul Mackerrasa355aa52011-12-12 12:37:21 +0000899 * Ensure the read of mmu_notifier_count happens before the read
900 * of mmu_notifier_seq. This interacts with the smp_wmb() in
901 * mmu_notifier_invalidate_range_end to make sure that the caller
902 * either sees the old (non-zero) value of mmu_notifier_count or
903 * the new (incremented) value of mmu_notifier_seq.
904 * PowerPC Book3s HV KVM calls this under a per-page lock
905 * rather than under kvm->mmu_lock, for scalability, so
906 * can't rely on kvm->mmu_lock to keep things ordered.
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200907 */
Paul Mackerrasa355aa52011-12-12 12:37:21 +0000908 smp_rmb();
Christoffer Dall8ca40a72012-10-14 23:10:18 -0400909 if (kvm->mmu_notifier_seq != mmu_seq)
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200910 return 1;
911 return 0;
912}
913#endif
914
Alexander Grafa725d562013-04-17 13:29:30 +0200915#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
Avi Kivity399ec802008-11-19 13:58:46 +0200916
917#define KVM_MAX_IRQ_ROUTES 1024
918
919int kvm_setup_default_irq_routing(struct kvm *kvm);
920int kvm_set_irq_routing(struct kvm *kvm,
921 const struct kvm_irq_routing_entry *entries,
922 unsigned nr,
923 unsigned flags);
Alexander Grafe8cde092013-04-15 23:23:21 +0200924int kvm_set_routing_entry(struct kvm_irq_routing_table *rt,
925 struct kvm_kernel_irq_routing_entry *e,
926 const struct kvm_irq_routing_entry *ue);
Avi Kivity399ec802008-11-19 13:58:46 +0200927void kvm_free_irq_routing(struct kvm *kvm);
928
Jan Kiszka07975ad2012-03-29 21:14:12 +0200929int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
930
Avi Kivity399ec802008-11-19 13:58:46 +0200931#else
932
933static inline void kvm_free_irq_routing(struct kvm *kvm) {}
934
935#endif
936
Gregory Haskins721eecb2009-05-20 10:30:49 -0400937#ifdef CONFIG_HAVE_KVM_EVENTFD
938
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400939void kvm_eventfd_init(struct kvm *kvm);
Alexander Graf914daba2012-10-09 00:22:59 +0200940int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
941
942#ifdef CONFIG_HAVE_KVM_IRQCHIP
Alex Williamsond4db2932012-06-29 09:56:08 -0600943int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
Gregory Haskins721eecb2009-05-20 10:30:49 -0400944void kvm_irqfd_release(struct kvm *kvm);
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200945void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *);
Alexander Graf914daba2012-10-09 00:22:59 +0200946#else
947static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
948{
949 return -EINVAL;
950}
951
952static inline void kvm_irqfd_release(struct kvm *kvm) {}
953#endif
Gregory Haskins721eecb2009-05-20 10:30:49 -0400954
955#else
956
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400957static inline void kvm_eventfd_init(struct kvm *kvm) {}
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200958
Alex Williamsond4db2932012-06-29 09:56:08 -0600959static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
Gregory Haskins721eecb2009-05-20 10:30:49 -0400960{
961 return -EINVAL;
962}
963
964static inline void kvm_irqfd_release(struct kvm *kvm) {}
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200965
Alexander Graf27923eb2010-11-25 10:25:44 +0100966#ifdef CONFIG_HAVE_KVM_IRQCHIP
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200967static inline void kvm_irq_routing_update(struct kvm *kvm,
968 struct kvm_irq_routing_table *irq_rt)
969{
970 rcu_assign_pointer(kvm->irq_routing, irq_rt);
971}
Alexander Graf27923eb2010-11-25 10:25:44 +0100972#endif
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200973
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400974static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
975{
976 return -ENOSYS;
977}
Gregory Haskins721eecb2009-05-20 10:30:49 -0400978
979#endif /* CONFIG_HAVE_KVM_EVENTFD */
980
Gleb Natapov73880c82009-06-09 15:56:28 +0300981#ifdef CONFIG_KVM_APIC_ARCHITECTURE
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300982static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
983{
Marcelo Tosattid3efc8e2009-06-17 10:07:59 -0300984 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300985}
Avi Kivity3e515702012-03-05 14:23:29 +0200986
987bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu);
988
989#else
990
991static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; }
992
Avi Kivity6aa8b732006-12-10 02:21:36 -0800993#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +0300994
Alex Williamson2a5bab12013-04-16 13:49:18 -0600995#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
Avi Kivitybfd99ff2009-08-26 14:57:50 +0300996
997long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
998 unsigned long arg);
999
Alex Williamson2a5bab12013-04-16 13:49:18 -06001000void kvm_free_all_assigned_devices(struct kvm *kvm);
1001
Avi Kivitybfd99ff2009-08-26 14:57:50 +03001002#else
1003
1004static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
1005 unsigned long arg)
1006{
1007 return -ENOTTY;
1008}
1009
Alex Williamson2a5bab12013-04-16 13:49:18 -06001010static inline void kvm_free_all_assigned_devices(struct kvm *kvm) {}
1011
Gleb Natapov73880c82009-06-09 15:56:28 +03001012#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +03001013
Avi Kivitya8eeb042010-05-10 12:34:53 +03001014static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
1015{
1016 set_bit(req, &vcpu->requests);
1017}
1018
Avi Kivitya8eeb042010-05-10 12:34:53 +03001019static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
1020{
Avi Kivity07198372010-05-10 13:08:26 +03001021 if (test_bit(req, &vcpu->requests)) {
1022 clear_bit(req, &vcpu->requests);
1023 return true;
1024 } else {
1025 return false;
1026 }
Avi Kivitya8eeb042010-05-10 12:34:53 +03001027}
1028
Geoff Levand8b415dc2013-04-05 19:20:30 +00001029extern bool kvm_rebooting;
1030
Scott Wood852b6d52013-04-12 14:08:42 +00001031struct kvm_device_ops;
1032
1033struct kvm_device {
1034 struct kvm_device_ops *ops;
1035 struct kvm *kvm;
Scott Wood852b6d52013-04-12 14:08:42 +00001036 void *private;
Scott Wood07f0a7b2013-04-25 14:11:23 +00001037 struct list_head vm_node;
Scott Wood852b6d52013-04-12 14:08:42 +00001038};
1039
1040/* create, destroy, and name are mandatory */
1041struct kvm_device_ops {
1042 const char *name;
1043 int (*create)(struct kvm_device *dev, u32 type);
1044
1045 /*
1046 * Destroy is responsible for freeing dev.
1047 *
1048 * Destroy may be called before or after destructors are called
1049 * on emulated I/O regions, depending on whether a reference is
1050 * held by a vcpu or other kvm component that gets destroyed
1051 * after the emulated I/O.
1052 */
1053 void (*destroy)(struct kvm_device *dev);
1054
1055 int (*set_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1056 int (*get_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1057 int (*has_attr)(struct kvm_device *dev, struct kvm_device_attr *attr);
1058 long (*ioctl)(struct kvm_device *dev, unsigned int ioctl,
1059 unsigned long arg);
1060};
1061
1062void kvm_device_get(struct kvm_device *dev);
1063void kvm_device_put(struct kvm_device *dev);
1064struct kvm_device *kvm_device_from_filp(struct file *filp);
1065
Scott Wood5df554a2013-04-12 14:08:46 +00001066extern struct kvm_device_ops kvm_mpic_ops;
Paul Mackerras5975a2e2013-04-27 00:28:37 +00001067extern struct kvm_device_ops kvm_xics_ops;
Scott Wood5df554a2013-04-12 14:08:46 +00001068
Raghavendra K T4c088492012-07-18 19:07:46 +05301069#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
1070
1071static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1072{
1073 vcpu->spin_loop.in_spin_loop = val;
1074}
1075static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1076{
1077 vcpu->spin_loop.dy_eligible = val;
1078}
1079
1080#else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1081
1082static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1083{
1084}
1085
1086static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1087{
1088}
1089
Raghavendra K T06e48c52012-07-19 15:17:52 +05301090static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu)
1091{
1092 return true;
1093}
1094
Raghavendra K T4c088492012-07-18 19:07:46 +05301095#endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
Avi Kivitybfd99ff2009-08-26 14:57:50 +03001096#endif
Marcelo Tosatti09a6e1f2013-03-22 08:08:06 -03001097