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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
Kevin Hilmanf445f112013-03-14 17:13:46 -07004#if IS_ENABLED(CONFIG_KVM)
5
Avi Kivity6aa8b732006-12-10 02:21:36 -08006/*
7 * This work is licensed under the terms of the GNU GPL, version 2. See
8 * the COPYING file in the top-level directory.
9 */
10
11#include <linux/types.h>
Christian Borntraegere56a7a22007-10-18 14:39:10 +020012#include <linux/hardirq.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080013#include <linux/list.h>
14#include <linux/mutex.h>
15#include <linux/spinlock.h>
Markus Rechberger06ff0d32007-05-27 10:46:52 +030016#include <linux/signal.h>
17#include <linux/sched.h>
Paul Gortmaker187f1882011-11-23 20:12:59 -050018#include <linux/bug.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080019#include <linux/mm.h>
Eric B Munsonb297e672011-10-10 11:46:15 -040020#include <linux/mmu_notifier.h>
Avi Kivity15ad7142007-07-11 18:17:21 +030021#include <linux/preempt.h>
Sheng Yang0937c482008-11-24 14:32:53 +080022#include <linux/msi.h>
Jan Kiszkad89f5ef2010-11-09 17:02:49 +010023#include <linux/slab.h>
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +020024#include <linux/rcupdate.h>
Jan Kiszkabd801582011-09-12 11:26:22 +020025#include <linux/ratelimit.h>
Xiao Guangrong83f09222012-08-03 15:39:59 +080026#include <linux/err.h>
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +010027#include <linux/irqflags.h>
Alexey Dobriyane8edc6e2007-05-21 01:22:52 +040028#include <asm/signal.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080029
Avi Kivity6aa8b732006-12-10 02:21:36 -080030#include <linux/kvm.h>
Ingo Molnar102d8322007-02-19 14:37:47 +020031#include <linux/kvm_para.h>
Avi Kivity6aa8b732006-12-10 02:21:36 -080032
Avi Kivityedf88412007-12-16 11:02:48 +020033#include <linux/kvm_types.h>
Hollis Blanchardd77a39d92007-12-03 15:30:23 -060034
Avi Kivityedf88412007-12-16 11:02:48 +020035#include <asm/kvm_host.h>
Zhang Xiantaod657a982007-12-14 09:41:22 +080036
Avi Kivitycef4dea2010-01-20 12:01:20 +020037#ifndef KVM_MMIO_SIZE
38#define KVM_MMIO_SIZE 8
39#endif
40
Avi Kivity6aa8b732006-12-10 02:21:36 -080041/*
Xiao Guangrong67b29202012-08-21 10:58:45 +080042 * The bit 16 ~ bit 31 of kvm_memory_region::flags are internally used
43 * in kvm, other bits are visible for userspace which are defined in
44 * include/linux/kvm_h.
45 */
46#define KVM_MEMSLOT_INVALID (1UL << 16)
47
Xiao Guangrong87da7e62012-10-24 14:07:59 +080048/* Two fragments for cross MMIO pages. */
49#define KVM_MAX_MMIO_FRAGMENTS 2
Avi Kivityf78146b2012-04-18 19:22:47 +030050
51/*
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080052 * For the normal pfn, the highest 12 bits should be zero,
Xiao Guangrong81c52c52012-10-16 20:10:59 +080053 * so we can mask bit 62 ~ bit 52 to indicate the error pfn,
54 * mask bit 63 to indicate the noslot pfn.
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080055 */
Xiao Guangrong81c52c52012-10-16 20:10:59 +080056#define KVM_PFN_ERR_MASK (0x7ffULL << 52)
57#define KVM_PFN_ERR_NOSLOT_MASK (0xfffULL << 52)
58#define KVM_PFN_NOSLOT (0x1ULL << 63)
Xiao Guangrong6c8ee572012-08-03 15:37:54 +080059
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080060#define KVM_PFN_ERR_FAULT (KVM_PFN_ERR_MASK)
61#define KVM_PFN_ERR_HWPOISON (KVM_PFN_ERR_MASK + 1)
Xiao Guangrong81c52c52012-10-16 20:10:59 +080062#define KVM_PFN_ERR_RO_FAULT (KVM_PFN_ERR_MASK + 2)
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080063
Xiao Guangrong81c52c52012-10-16 20:10:59 +080064/*
65 * error pfns indicate that the gfn is in slot but faild to
66 * translate it to pfn on host.
67 */
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080068static inline bool is_error_pfn(pfn_t pfn)
Xiao Guangrong83f09222012-08-03 15:39:59 +080069{
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080070 return !!(pfn & KVM_PFN_ERR_MASK);
Xiao Guangrong83f09222012-08-03 15:39:59 +080071}
72
Xiao Guangrong81c52c52012-10-16 20:10:59 +080073/*
74 * error_noslot pfns indicate that the gfn can not be
75 * translated to pfn - it is not in slot or failed to
76 * translate it to pfn.
77 */
78static inline bool is_error_noslot_pfn(pfn_t pfn)
Xiao Guangrong83f09222012-08-03 15:39:59 +080079{
Xiao Guangrong81c52c52012-10-16 20:10:59 +080080 return !!(pfn & KVM_PFN_ERR_NOSLOT_MASK);
Xiao Guangrong83f09222012-08-03 15:39:59 +080081}
82
Xiao Guangrong81c52c52012-10-16 20:10:59 +080083/* noslot pfn indicates that the gfn is not in slot. */
84static inline bool is_noslot_pfn(pfn_t pfn)
Xiao Guangrong83f09222012-08-03 15:39:59 +080085{
Xiao Guangrong81c52c52012-10-16 20:10:59 +080086 return pfn == KVM_PFN_NOSLOT;
Xiao Guangrong83f09222012-08-03 15:39:59 +080087}
88
Xiao Guangrong7068d092012-08-21 11:02:22 +080089#define KVM_HVA_ERR_BAD (PAGE_OFFSET)
90#define KVM_HVA_ERR_RO_BAD (PAGE_OFFSET + PAGE_SIZE)
Xiao Guangrongca3a4902012-08-21 11:01:50 +080091
92static inline bool kvm_is_error_hva(unsigned long addr)
93{
Xiao Guangrong7068d092012-08-21 11:02:22 +080094 return addr >= PAGE_OFFSET;
Xiao Guangrongca3a4902012-08-21 11:01:50 +080095}
96
Xiao Guangrong6cede2e2012-08-03 15:41:22 +080097#define KVM_ERR_PTR_BAD_PAGE (ERR_PTR(-ENOENT))
98
Xiao Guangrong9c5b1172012-08-03 15:43:51 +080099static inline bool is_error_page(struct page *page)
Xiao Guangrong6cede2e2012-08-03 15:41:22 +0800100{
101 return IS_ERR(page);
102}
103
Avi Kivity6aa8b732006-12-10 02:21:36 -0800104/*
Avi Kivityd9e368d2007-06-07 19:18:30 +0300105 * vcpu->requests bit members
106 */
Avi Kivity3176bc32007-10-16 17:22:08 +0200107#define KVM_REQ_TLB_FLUSH 0
Avi Kivity2f52d582008-01-16 12:49:30 +0200108#define KVM_REQ_MIGRATE_TIMER 1
Avi Kivityb209749f2007-10-22 16:50:39 +0200109#define KVM_REQ_REPORT_TPR_ACCESS 2
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500110#define KVM_REQ_MMU_RELOAD 3
Joerg Roedel71c4dfa2008-02-26 16:49:16 +0100111#define KVM_REQ_TRIPLE_FAULT 4
Marcelo Tosatti06e05642008-06-06 16:37:36 -0300112#define KVM_REQ_PENDING_TIMER 5
Marcelo Tosattid7690172008-09-08 15:23:48 -0300113#define KVM_REQ_UNHALT 6
Marcelo Tosatti4731d4c2008-09-23 13:18:39 -0300114#define KVM_REQ_MMU_SYNC 7
Zachary Amsden34c238a2010-09-18 14:38:14 -1000115#define KVM_REQ_CLOCK_UPDATE 8
Marcelo Tosatti32f88402009-05-07 17:55:12 -0300116#define KVM_REQ_KICK 9
Avi Kivity02daab22009-12-30 12:40:26 +0200117#define KVM_REQ_DEACTIVATE_FPU 10
Avi Kivity3842d132010-07-27 12:30:24 +0300118#define KVM_REQ_EVENT 11
Gleb Natapovaf585b92010-10-14 11:22:46 +0200119#define KVM_REQ_APF_HALT 12
Glauber Costac9aaa892011-07-11 15:28:14 -0400120#define KVM_REQ_STEAL_UPDATE 13
Avi Kivity7460fb4a2011-09-20 13:43:14 +0300121#define KVM_REQ_NMI 14
Nadav Har'Eld6185f22011-09-22 13:52:56 +0300122#define KVM_REQ_IMMEDIATE_EXIT 15
Gleb Natapovf5132b02011-11-10 14:57:22 +0200123#define KVM_REQ_PMU 16
124#define KVM_REQ_PMI 17
Bharat Bhushanf61c94b2012-08-08 20:38:19 +0000125#define KVM_REQ_WATCHDOG 18
Marcelo Tosattid8281992012-11-27 23:29:01 -0200126#define KVM_REQ_MASTERCLOCK_UPDATE 19
127#define KVM_REQ_MCLOCK_INPROGRESS 20
Alexander Graf1c810632013-01-04 18:12:48 +0100128#define KVM_REQ_EPR_EXIT 21
Yang Zhangc7c9c562013-01-25 10:18:51 +0800129#define KVM_REQ_EOIBITMAP 22
Avi Kivity6aa8b732006-12-10 02:21:36 -0800130
Alex Williamson7a844282012-09-21 11:58:03 -0600131#define KVM_USERSPACE_IRQ_SOURCE_ID 0
132#define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
Sheng Yang5550af42008-10-15 20:15:06 +0800133
Michael S. Tsirkin6c474692009-06-29 22:24:26 +0300134struct kvm;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800135struct kvm_vcpu;
Rusty Russellc16f8622007-07-30 21:12:19 +1000136extern struct kmem_cache *kvm_vcpu_cache;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800137
Sasha Levin743eeb02011-07-27 16:00:48 +0300138struct kvm_io_range {
139 gpa_t addr;
140 int len;
141 struct kvm_io_device *dev;
142};
143
Amos Kong786a9f82012-03-09 12:17:40 +0800144#define NR_IOBUS_DEVS 1000
Amos Konga13007162012-03-09 12:17:32 +0800145
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400146struct kvm_io_bus {
147 int dev_count;
Amos Konga13007162012-03-09 12:17:32 +0800148 struct kvm_io_range range[];
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400149};
150
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200151enum kvm_bus {
152 KVM_MMIO_BUS,
153 KVM_PIO_BUS,
154 KVM_NR_BUSES
155};
156
157int kvm_io_bus_write(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
158 int len, const void *val);
159int 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 +0300160 void *val);
Sasha Levin743eeb02011-07-27 16:00:48 +0300161int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
162 int len, struct kvm_io_device *dev);
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200163int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
164 struct kvm_io_device *dev);
Gregory Haskins2eeb2e92007-05-31 14:08:53 -0400165
Gleb Natapovaf585b92010-10-14 11:22:46 +0200166#ifdef CONFIG_KVM_ASYNC_PF
167struct kvm_async_pf {
168 struct work_struct work;
169 struct list_head link;
170 struct list_head queue;
171 struct kvm_vcpu *vcpu;
172 struct mm_struct *mm;
173 gva_t gva;
174 unsigned long addr;
175 struct kvm_arch_async_pf arch;
176 struct page *page;
177 bool done;
178};
179
180void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
181void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
182int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
183 struct kvm_arch_async_pf *arch);
Gleb Natapov344d9582010-10-14 11:22:50 +0200184int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
Gleb Natapovaf585b92010-10-14 11:22:46 +0200185#endif
186
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800187enum {
188 OUTSIDE_GUEST_MODE,
189 IN_GUEST_MODE,
Avi Kivityc1427862012-05-14 15:44:06 +0300190 EXITING_GUEST_MODE,
191 READING_SHADOW_PAGE_TABLES,
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800192};
193
Avi Kivityf78146b2012-04-18 19:22:47 +0300194/*
195 * Sometimes a large or cross-page mmio needs to be broken up into separate
196 * exits for userspace servicing.
197 */
198struct kvm_mmio_fragment {
199 gpa_t gpa;
200 void *data;
201 unsigned len;
202};
203
Zhang Xiantaod657a982007-12-14 09:41:22 +0800204struct kvm_vcpu {
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800205 struct kvm *kvm;
Hollis Blanchard31bb1172008-01-28 17:42:34 -0600206#ifdef CONFIG_PREEMPT_NOTIFIERS
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800207 struct preempt_notifier preempt_notifier;
Hollis Blanchard31bb1172008-01-28 17:42:34 -0600208#endif
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800209 int cpu;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800210 int vcpu_id;
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800211 int srcu_idx;
212 int mode;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800213 unsigned long requests;
Jan Kiszkad0bfb942008-12-15 13:52:10 +0100214 unsigned long guest_debug;
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800215
216 struct mutex mutex;
217 struct kvm_run *run;
Marcelo Tosattif656ce02009-12-23 14:35:25 -0200218
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800219 int fpu_active;
Dexuan Cui2acf9232010-06-10 11:27:12 +0800220 int guest_fpu_loaded, guest_xcr0_loaded;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800221 wait_queue_head_t wq;
Rik van Riel34bb10b2011-02-01 09:52:41 -0500222 struct pid *pid;
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800223 int sigset_active;
224 sigset_t sigset;
225 struct kvm_vcpu_stat stat;
226
227#ifdef CONFIG_HAS_IOMEM
228 int mmio_needed;
229 int mmio_read_completed;
230 int mmio_is_write;
Avi Kivityf78146b2012-04-18 19:22:47 +0300231 int mmio_cur_fragment;
232 int mmio_nr_fragments;
233 struct kvm_mmio_fragment mmio_fragments[KVM_MAX_MMIO_FRAGMENTS];
Zhang Xiantaod17fbbf2007-12-14 09:45:31 +0800234#endif
Zhang Xiantaod657a982007-12-14 09:41:22 +0800235
Gleb Natapovaf585b92010-10-14 11:22:46 +0200236#ifdef CONFIG_KVM_ASYNC_PF
237 struct {
238 u32 queued;
239 struct list_head queue;
240 struct list_head done;
241 spinlock_t lock;
242 } async_pf;
243#endif
244
Raghavendra K T4c088492012-07-18 19:07:46 +0530245#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
246 /*
247 * Cpu relax intercept or pause loop exit optimization
248 * in_spin_loop: set when a vcpu does a pause loop exit
249 * or cpu relax intercepted.
250 * dy_eligible: indicates whether vcpu is eligible for directed yield.
251 */
252 struct {
253 bool in_spin_loop;
254 bool dy_eligible;
255 } spin_loop;
256#endif
Zhang Xiantaod657a982007-12-14 09:41:22 +0800257 struct kvm_vcpu_arch arch;
258};
259
Xiao Guangrong6b7e2d02011-01-12 15:40:31 +0800260static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
261{
262 return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
263}
264
Takuya Yoshikawa660c22c2010-04-13 22:47:24 +0900265/*
266 * Some of the bitops functions do not support too long bitmaps.
267 * This number must be determined not to exceed such limits.
268 */
269#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
270
Avi Kivity6aa8b732006-12-10 02:21:36 -0800271struct kvm_memory_slot {
272 gfn_t base_gfn;
273 unsigned long npages;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800274 unsigned long *dirty_bitmap;
Takuya Yoshikawadb3fe4e2012-02-08 13:02:18 +0900275 struct kvm_arch_memory_slot arch;
Izik Eidus8a7ae052007-10-18 11:09:33 +0200276 unsigned long userspace_addr;
Alex Williamson6104f472012-12-10 10:33:26 -0700277 u32 flags;
Alex Williamson1e702d92012-12-10 10:33:32 -0700278 short id;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800279};
280
Takuya Yoshikawa87bf6e72010-04-12 19:35:35 +0900281static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
282{
283 return ALIGN(memslot->npages, BITS_PER_LONG) / 8;
284}
285
Avi Kivity399ec802008-11-19 13:58:46 +0200286struct kvm_kernel_irq_routing_entry {
287 u32 gsi;
Michael S. Tsirkin5116d8f2009-07-26 17:10:01 +0300288 u32 type;
Gleb Natapov49256632009-02-04 17:28:14 +0200289 int (*set)(struct kvm_kernel_irq_routing_entry *e,
Gleb Natapov1a6e4a82009-08-24 11:54:19 +0300290 struct kvm *kvm, int irq_source_id, int level);
Avi Kivity399ec802008-11-19 13:58:46 +0200291 union {
292 struct {
293 unsigned irqchip;
294 unsigned pin;
295 } irqchip;
Sheng Yang79950e12009-02-10 13:57:06 +0800296 struct msi_msg msi;
Avi Kivity399ec802008-11-19 13:58:46 +0200297 };
Gleb Natapov46e624b2009-08-24 11:54:20 +0300298 struct hlist_node link;
299};
300
Gleb Natapov3e71f882009-08-24 11:54:21 +0300301#ifdef __KVM_HAVE_IOAPIC
302
Gleb Natapov46e624b2009-08-24 11:54:20 +0300303struct kvm_irq_routing_table {
Gleb Natapov3e71f882009-08-24 11:54:21 +0300304 int chip[KVM_NR_IRQCHIPS][KVM_IOAPIC_NUM_PINS];
Gleb Natapov46e624b2009-08-24 11:54:20 +0300305 struct kvm_kernel_irq_routing_entry *rt_entries;
306 u32 nr_rt_entries;
307 /*
308 * Array indexed by gsi. Each entry contains list of irq chips
309 * the gsi is connected to.
310 */
311 struct hlist_head map[0];
Avi Kivity399ec802008-11-19 13:58:46 +0200312};
313
Gleb Natapov3e71f882009-08-24 11:54:21 +0300314#else
315
316struct kvm_irq_routing_table {};
317
318#endif
319
Alex Williamson07432472012-12-10 10:33:15 -0700320#ifndef KVM_PRIVATE_MEM_SLOTS
321#define KVM_PRIVATE_MEM_SLOTS 0
322#endif
323
Xiao Guangrong93a5cef2011-11-24 17:37:48 +0800324#ifndef KVM_MEM_SLOTS_NUM
Alex Williamsonbbacc0c2012-12-10 10:33:09 -0700325#define KVM_MEM_SLOTS_NUM (KVM_USER_MEM_SLOTS + KVM_PRIVATE_MEM_SLOTS)
Xiao Guangrong93a5cef2011-11-24 17:37:48 +0800326#endif
327
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800328/*
329 * Note:
330 * memslots are not sorted by id anymore, please use id_to_memslot()
331 * to get the memslot by its id.
332 */
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200333struct kvm_memslots {
Gleb Natapov49c77542010-10-18 15:22:23 +0200334 u64 generation;
Xiao Guangrong93a5cef2011-11-24 17:37:48 +0800335 struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800336 /* The mapping table from slot id to the index in memslots[]. */
Alex Williamson1e702d92012-12-10 10:33:32 -0700337 short id_to_index[KVM_MEM_SLOTS_NUM];
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200338};
339
Avi Kivity6aa8b732006-12-10 02:21:36 -0800340struct kvm {
Marcelo Tosattiaaee2c92007-12-20 19:18:26 -0500341 spinlock_t mmu_lock;
Marcelo Tosatti79fac952009-12-23 14:35:26 -0200342 struct mutex slots_lock;
Avi Kivity6d4e4c42007-11-21 16:41:05 +0200343 struct mm_struct *mm; /* userspace tied to this vm */
Marcelo Tosatti46a26bf2009-12-23 14:35:16 -0200344 struct kvm_memslots *memslots;
Marcelo Tosattibc6678a2009-12-23 14:35:21 -0200345 struct srcu_struct srcu;
Gleb Natapov73880c82009-06-09 15:56:28 +0300346#ifdef CONFIG_KVM_APIC_ARCHITECTURE
347 u32 bsp_vcpu_id;
Gleb Natapov73880c82009-06-09 15:56:28 +0300348#endif
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000349 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
Gleb Natapov73880c82009-06-09 15:56:28 +0300350 atomic_t online_vcpus;
Rik van Riel217ece62011-02-01 09:53:28 -0500351 int last_boosted_vcpu;
Avi Kivity133de902007-02-12 00:54:44 -0800352 struct list_head vm_list;
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300353 struct mutex lock;
Marcelo Tosattie93f8a02009-12-23 14:35:24 -0200354 struct kvm_io_bus *buses[KVM_NR_BUSES];
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400355#ifdef CONFIG_HAVE_KVM_EVENTFD
356 struct {
357 spinlock_t lock;
358 struct list_head items;
Alex Williamson7a844282012-09-21 11:58:03 -0600359 struct list_head resampler_list;
360 struct mutex resampler_lock;
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400361 } irqfds;
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400362 struct list_head ioeventfds;
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400363#endif
Avi Kivityba1389b2007-11-18 16:24:12 +0200364 struct kvm_vm_stat stat;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800365 struct kvm_arch arch;
Izik Eidusd39f13b2008-03-30 16:01:25 +0300366 atomic_t users_count;
Laurent Vivier5f94c172008-05-30 16:05:54 +0200367#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
Laurent Vivier5f94c172008-05-30 16:05:54 +0200368 struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
Sasha Levin2b3c246a2011-07-20 20:59:00 +0300369 spinlock_t ring_lock;
370 struct list_head coalesced_zones;
Laurent Vivier5f94c172008-05-30 16:05:54 +0200371#endif
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200372
Marcelo Tosatti60eead72009-06-04 15:08:23 -0300373 struct mutex irq_lock;
Avi Kivity75858a82009-01-04 17:10:50 +0200374#ifdef CONFIG_HAVE_KVM_IRQCHIP
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200375 /*
376 * Update side is protected by irq_lock and,
377 * if configured, irqfds.lock.
378 */
Arnd Bergmann4b6a2872010-03-04 15:59:23 +0100379 struct kvm_irq_routing_table __rcu *irq_routing;
Avi Kivity75858a82009-01-04 17:10:50 +0200380 struct hlist_head mask_notifier_list;
Gleb Natapov136bdfe2009-08-24 11:54:23 +0300381 struct hlist_head irq_ack_notifier_list;
Avi Kivity75858a82009-01-04 17:10:50 +0200382#endif
383
Marc Zyngier36c1ed82012-06-15 15:07:24 -0400384#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200385 struct mmu_notifier mmu_notifier;
386 unsigned long mmu_notifier_seq;
387 long mmu_notifier_count;
388#endif
Avi Kivity5c663a12010-12-08 18:04:51 +0200389 long tlbs_dirty;
Avi Kivity6aa8b732006-12-10 02:21:36 -0800390};
391
Christoffer Dalla737f252012-06-03 21:17:48 +0300392#define kvm_err(fmt, ...) \
393 pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
394#define kvm_info(fmt, ...) \
395 pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
396#define kvm_debug(fmt, ...) \
397 pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
398#define kvm_pr_unimpl(fmt, ...) \
399 pr_err_ratelimited("kvm [%i]: " fmt, \
400 task_tgid_nr(current), ## __VA_ARGS__)
Rusty Russellf0242472007-08-01 10:48:02 +1000401
Christoffer Dalla737f252012-06-03 21:17:48 +0300402/* The guest did something we don't support. */
403#define vcpu_unimpl(vcpu, fmt, ...) \
404 kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
Avi Kivity6aa8b732006-12-10 02:21:36 -0800405
Gleb Natapov988a2ca2009-06-09 15:56:29 +0300406static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
407{
408 smp_rmb();
409 return kvm->vcpus[i];
410}
411
412#define kvm_for_each_vcpu(idx, vcpup, kvm) \
Jeff Mahoneyb42fc3c2011-04-12 21:30:17 -0400413 for (idx = 0; \
414 idx < atomic_read(&kvm->online_vcpus) && \
415 (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
416 idx++)
Gleb Natapov988a2ca2009-06-09 15:56:29 +0300417
Xiao Guangrongbe6ba0f2011-11-24 17:39:18 +0800418#define kvm_for_each_memslot(memslot, slots) \
419 for (memslot = &slots->memslots[0]; \
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800420 memslot < slots->memslots + KVM_MEM_SLOTS_NUM && memslot->npages;\
421 memslot++)
Xiao Guangrongbe6ba0f2011-11-24 17:39:18 +0800422
Rusty Russellfb3f0f52007-07-27 17:16:56 +1000423int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
424void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
425
Michael S. Tsirkin9fc77442012-09-16 11:50:30 +0300426int __must_check vcpu_load(struct kvm_vcpu *vcpu);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200427void vcpu_put(struct kvm_vcpu *vcpu);
428
Avi Kivity0ee75be2010-04-28 15:39:01 +0300429int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
Rusty Russellc16f8622007-07-30 21:12:19 +1000430 struct module *module);
Zhang Xiantaocb498ea2007-11-14 20:39:31 +0800431void kvm_exit(void);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800432
Izik Eidusd39f13b2008-03-30 16:01:25 +0300433void kvm_get_kvm(struct kvm *kvm);
434void kvm_put_kvm(struct kvm *kvm);
Alex Williamson116c14c2012-12-21 08:20:16 -0700435void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new,
436 u64 last_generation);
Izik Eidusd39f13b2008-03-30 16:01:25 +0300437
Lai Jiangshan90d83dc2010-04-19 17:41:23 +0800438static inline struct kvm_memslots *kvm_memslots(struct kvm *kvm)
439{
440 return rcu_dereference_check(kvm->memslots,
441 srcu_read_lock_held(&kvm->srcu)
442 || lockdep_is_held(&kvm->slots_lock));
443}
444
Xiao Guangrong28a37542011-11-24 19:04:35 +0800445static inline struct kvm_memory_slot *
446id_to_memslot(struct kvm_memslots *slots, int id)
447{
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800448 int index = slots->id_to_index[id];
449 struct kvm_memory_slot *slot;
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800450
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800451 slot = &slots->memslots[index];
Xiao Guangrongbf3e05b2011-11-24 17:40:57 +0800452
Xiao Guangrongf85e2cb2011-11-24 17:41:54 +0800453 WARN_ON(slot->id != id);
454 return slot;
Xiao Guangrong28a37542011-11-24 19:04:35 +0800455}
456
Izik Eidus210c7c42007-10-24 23:52:57 +0200457int kvm_set_memory_region(struct kvm *kvm,
458 struct kvm_userspace_memory_region *mem,
Alex Williamsonf82a8cf2012-12-10 10:33:21 -0700459 bool user_alloc);
Sheng Yangf78e0e22007-10-29 09:40:42 +0800460int __kvm_set_memory_region(struct kvm *kvm,
461 struct kvm_userspace_memory_region *mem,
Alex Williamsonf82a8cf2012-12-10 10:33:21 -0700462 bool user_alloc);
Takuya Yoshikawadb3fe4e2012-02-08 13:02:18 +0900463void kvm_arch_free_memslot(struct kvm_memory_slot *free,
464 struct kvm_memory_slot *dont);
465int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages);
Marcelo Tosattif7784b82009-12-23 14:35:18 -0200466int kvm_arch_prepare_memory_region(struct kvm *kvm,
467 struct kvm_memory_slot *memslot,
468 struct kvm_memory_slot old,
469 struct kvm_userspace_memory_region *mem,
Alex Williamsonf82a8cf2012-12-10 10:33:21 -0700470 bool user_alloc);
Marcelo Tosattif7784b82009-12-23 14:35:18 -0200471void kvm_arch_commit_memory_region(struct kvm *kvm,
Zhang Xiantao0de10342007-11-20 16:25:04 +0800472 struct kvm_userspace_memory_region *mem,
473 struct kvm_memory_slot old,
Alex Williamsonf82a8cf2012-12-10 10:33:21 -0700474 bool user_alloc);
Takuya Yoshikawadb3fe4e2012-02-08 13:02:18 +0900475bool kvm_largepages_enabled(void);
Marcelo Tosatti54dee992009-06-11 12:07:44 -0300476void kvm_disable_largepages(void);
Marcelo Tosatti2df72e92012-08-24 15:54:57 -0300477/* flush all memory translations */
478void kvm_arch_flush_shadow_all(struct kvm *kvm);
479/* flush memory translations pointing to 'slot' */
480void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
481 struct kvm_memory_slot *slot);
Marcelo Tosattia983fb22009-12-23 14:35:23 -0200482
Xiao Guangrong48987782010-08-22 19:11:43 +0800483int gfn_to_page_many_atomic(struct kvm *kvm, gfn_t gfn, struct page **pages,
484 int nr_pages);
485
Avi Kivity954bbbc2007-03-30 14:02:32 +0300486struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300487unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
Xiao Guangrong4d8b81a2012-08-21 11:02:51 +0800488unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
Izik Eidusb4231d62007-11-20 11:49:33 +0200489void kvm_release_page_clean(struct page *page);
490void kvm_release_page_dirty(struct page *page);
Anthony Liguori35149e22008-04-02 14:46:56 -0500491void kvm_set_page_dirty(struct page *page);
492void kvm_set_page_accessed(struct page *page);
493
Xiao Guangrong365fb3f2010-08-28 19:24:13 +0800494pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti612819c2010-10-22 14:18:18 -0200495pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async,
496 bool write_fault, bool *writable);
Anthony Liguori35149e22008-04-02 14:46:56 -0500497pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
Marcelo Tosatti612819c2010-10-22 14:18:18 -0200498pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
499 bool *writable);
Xiao Guangrongd5661042012-07-17 21:56:16 +0800500pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
Xiao Guangrong037d92d2012-08-21 10:59:12 +0800501pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn);
502
Xiao Guangrong32cad842012-08-03 15:42:52 +0800503void kvm_release_pfn_dirty(pfn_t pfn);
Anthony Liguori35149e22008-04-02 14:46:56 -0500504void kvm_release_pfn_clean(pfn_t pfn);
505void kvm_set_pfn_dirty(pfn_t pfn);
506void kvm_set_pfn_accessed(pfn_t pfn);
507void kvm_get_pfn(pfn_t pfn);
508
Izik Eidus195aefd2007-10-01 22:14:18 +0200509int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
510 int len);
Marcelo Tosatti7ec54582007-12-20 19:18:23 -0500511int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
512 unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200513int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
Gleb Natapove03b6442011-07-11 15:28:11 -0400514int kvm_read_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
515 void *data, unsigned long len);
Izik Eidus195aefd2007-10-01 22:14:18 +0200516int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
517 int offset, int len);
518int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
519 unsigned long len);
Gleb Natapov49c77542010-10-18 15:22:23 +0200520int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
521 void *data, unsigned long len);
522int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
523 gpa_t gpa);
Izik Eidus195aefd2007-10-01 22:14:18 +0200524int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
525int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800526struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
Izik Eiduse0d62c72007-10-24 23:57:46 +0200527int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
Joerg Roedel8f0b1ab2010-01-28 12:37:56 +0100528unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800529void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
Gleb Natapov49c77542010-10-18 15:22:23 +0200530void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot,
531 gfn_t gfn);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800532
Hollis Blanchard8776e512007-10-31 17:24:24 -0500533void kvm_vcpu_block(struct kvm_vcpu *vcpu);
Christoffer Dallb6d33832012-03-08 16:44:24 -0500534void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
Konstantin Weitz41628d32012-04-25 15:30:38 +0200535bool kvm_vcpu_yield_to(struct kvm_vcpu *target);
Zhai, Edwind255f4f2009-10-09 18:03:20 +0800536void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800537void kvm_resched(struct kvm_vcpu *vcpu);
Avi Kivity7702fd12007-06-14 16:27:40 +0300538void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
539void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
Xiao Guangronga4ee1ca2010-11-23 11:13:00 +0800540
Avi Kivityd9e368d2007-06-07 19:18:30 +0300541void kvm_flush_remote_tlbs(struct kvm *kvm);
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500542void kvm_reload_remote_mmus(struct kvm *kvm);
Marcelo Tosattid8281992012-11-27 23:29:01 -0200543void kvm_make_mclock_inprogress_request(struct kvm *kvm);
Yang Zhangc7c9c562013-01-25 10:18:51 +0800544void kvm_make_update_eoibitmap_request(struct kvm *kvm);
Avi Kivity6aa8b732006-12-10 02:21:36 -0800545
Carsten Otte043405e2007-10-10 17:16:19 +0200546long kvm_arch_dev_ioctl(struct file *filp,
547 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200548long kvm_arch_vcpu_ioctl(struct file *filp,
549 unsigned int ioctl, unsigned long arg);
Carsten Otte5b1c1492012-01-04 10:25:23 +0100550int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf);
Zhang Xiantao018d00d2007-11-15 23:07:47 +0800551
552int kvm_dev_ioctl_check_extension(long ext);
553
Zhang Xiantao5bb064d2007-11-18 20:29:43 +0800554int kvm_get_dirty_log(struct kvm *kvm,
555 struct kvm_dirty_log *log, int *is_dirty);
556int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
557 struct kvm_dirty_log *log);
558
Carsten Otte1fe779f2007-10-29 16:08:35 +0100559int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
560 struct
561 kvm_userspace_memory_region *mem,
Alex Williamsonf82a8cf2012-12-10 10:33:21 -0700562 bool user_alloc);
Christoffer Dall23d43cf2012-07-24 08:51:20 -0400563int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_level);
Carsten Otte1fe779f2007-10-29 16:08:35 +0100564long kvm_arch_vm_ioctl(struct file *filp,
565 unsigned int ioctl, unsigned long arg);
Carsten Otte313a3dc2007-10-11 19:16:52 +0200566
Hollis Blanchardd0752062007-10-31 17:24:25 -0500567int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
568int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
569
Zhang Xiantao8b006792007-11-16 13:05:55 +0800570int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
571 struct kvm_translation *tr);
572
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500573int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
574int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
575int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
576 struct kvm_sregs *sregs);
577int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
578 struct kvm_sregs *sregs);
Marcelo Tosatti62d9f0d2008-04-11 13:24:45 -0300579int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
580 struct kvm_mp_state *mp_state);
581int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
582 struct kvm_mp_state *mp_state);
Jan Kiszkad0bfb942008-12-15 13:52:10 +0100583int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
584 struct kvm_guest_debug *dbg);
Hollis Blanchardb6c7a5d2007-11-01 14:16:10 -0500585int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
586
Zhang Xiantaof8c16bb2007-11-14 20:40:21 +0800587int kvm_arch_init(void *opaque);
588void kvm_arch_exit(void);
Carsten Otte043405e2007-10-10 17:16:19 +0200589
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800590int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
591void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
592
593void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
594void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
595void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
596struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
Avi Kivity26e52152007-11-20 15:30:24 +0200597int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
Marcelo Tosatti42897d82012-11-27 23:29:02 -0200598int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
Hollis Blanchardd40ccc62007-11-19 14:04:43 -0600599void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800600
Alexander Graf10474ae2009-09-15 11:37:46 +0200601int kvm_arch_hardware_enable(void *garbage);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800602void kvm_arch_hardware_disable(void *garbage);
603int kvm_arch_hardware_setup(void);
604void kvm_arch_hardware_unsetup(void);
605void kvm_arch_check_processor_compat(void *rtn);
Zhang Xiantao1d737c82007-12-14 09:35:10 +0800606int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
Christoffer Dallb6d33832012-03-08 16:44:24 -0500607int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800608
Zhang Xiantaod19a9cd2007-11-18 18:43:45 +0800609void kvm_free_physmem(struct kvm *kvm);
610
Takuya Yoshikawac1a7b322012-05-20 13:15:07 +0900611void *kvm_kvzalloc(unsigned long size);
612void kvm_kvfree(const void *addr);
613
Jan Kiszkad89f5ef2010-11-09 17:02:49 +0100614#ifndef __KVM_HAVE_ARCH_VM_ALLOC
615static inline struct kvm *kvm_arch_alloc_vm(void)
616{
617 return kzalloc(sizeof(struct kvm), GFP_KERNEL);
618}
619
620static inline void kvm_arch_free_vm(struct kvm *kvm)
621{
622 kfree(kvm);
623}
624#endif
625
Christoffer Dallb6d33832012-03-08 16:44:24 -0500626static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
627{
Alexander Graf2246f8b2012-03-13 22:35:01 +0100628#ifdef __KVM_HAVE_ARCH_WQP
629 return vcpu->arch.wqp;
630#else
Christoffer Dallb6d33832012-03-08 16:44:24 -0500631 return &vcpu->wq;
Christoffer Dallb6d33832012-03-08 16:44:24 -0500632#endif
Alexander Graf2246f8b2012-03-13 22:35:01 +0100633}
Christoffer Dallb6d33832012-03-08 16:44:24 -0500634
Carsten Ottee08b9632012-01-04 10:25:20 +0100635int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
Zhang Xiantaod19a9cd2007-11-18 18:43:45 +0800636void kvm_arch_destroy_vm(struct kvm *kvm);
Xiantao Zhang8a98f662008-10-06 13:47:38 +0800637void kvm_free_all_assigned_devices(struct kvm *kvm);
Sheng Yangad8ba2c2009-01-06 10:03:02 +0800638void kvm_arch_sync_events(struct kvm *kvm);
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +0800639
Marcelo Tosatti3d808402008-04-11 14:53:26 -0300640int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
Zhang Xiantao57361992007-12-17 14:21:40 +0800641void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
Zhang Xiantao682c59a2007-12-11 20:36:00 +0800642
Xiao Guangronga2766322012-07-26 11:58:59 +0800643bool kvm_is_mmio_pfn(pfn_t pfn);
Xiantao Zhangc77fb9d2008-09-27 10:55:40 +0800644
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300645struct kvm_irq_ack_notifier {
646 struct hlist_node link;
647 unsigned gsi;
648 void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
649};
650
651struct kvm_assigned_dev_kernel {
652 struct kvm_irq_ack_notifier ack_notifier;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300653 struct list_head list;
654 int assigned_dev_id;
Zhai, Edwinab9f4ec2010-01-29 14:38:44 +0800655 int host_segnr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300656 int host_busnr;
657 int host_devfn;
Sheng Yangc1e01512009-02-25 17:22:26 +0800658 unsigned int entries_nr;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300659 int host_irq;
Mark McLoughlindefaf152008-12-02 12:16:33 +0000660 bool host_irq_disabled;
Jan Kiszka07700a92012-02-28 14:19:54 +0100661 bool pci_2_3;
Sheng Yangc1e01512009-02-25 17:22:26 +0800662 struct msix_entry *host_msix_entries;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300663 int guest_irq;
Jan Kiszka0645211c2010-11-16 22:30:03 +0100664 struct msix_entry *guest_msix_entries;
Sheng Yang4f906c12008-11-24 14:32:51 +0800665 unsigned long irq_requested_type;
Sheng Yang5550af42008-10-15 20:15:06 +0800666 int irq_source_id;
Weidong Hanb6535742008-12-08 23:29:53 +0800667 int flags;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300668 struct pci_dev *dev;
669 struct kvm *kvm;
Jan Kiszka0645211c2010-11-16 22:30:03 +0100670 spinlock_t intx_lock;
Jan Kiszkacf9eeac2012-03-14 11:02:11 +0100671 spinlock_t intx_mask_lock;
Jan Kiszka1e001d42010-11-16 22:30:04 +0100672 char irq_name[32];
Alex Williamsonf8fcfd72011-05-10 10:02:39 -0600673 struct pci_saved_state *pci_saved_state;
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300674};
Avi Kivity75858a82009-01-04 17:10:50 +0200675
676struct kvm_irq_mask_notifier {
677 void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
678 int irq;
679 struct hlist_node link;
680};
681
682void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
683 struct kvm_irq_mask_notifier *kimn);
684void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
685 struct kvm_irq_mask_notifier *kimn);
Gleb Natapov4a994352010-07-11 15:32:23 +0300686void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
687 bool mask);
Avi Kivity75858a82009-01-04 17:10:50 +0200688
Gleb Natapov46e624b2009-08-24 11:54:20 +0300689#ifdef __KVM_HAVE_IOAPIC
690void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
691 union kvm_ioapic_redirect_entry *entry,
692 unsigned long *deliver_bitmask);
693#endif
694int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level);
Michael S. Tsirkin01f21882012-10-17 18:06:02 +0200695int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level);
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200696int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
697 int irq_source_id, int level);
Yang Zhangc7c9c562013-01-25 10:18:51 +0800698bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);
Marcelo Tosatti44882ee2009-01-27 15:12:38 -0200699void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
Xiantao Zhang3de42dc2008-10-06 13:48:45 +0800700void kvm_register_irq_ack_notifier(struct kvm *kvm,
701 struct kvm_irq_ack_notifier *kian);
Marcelo Tosattifa40a822009-06-04 15:08:24 -0300702void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
703 struct kvm_irq_ack_notifier *kian);
Sheng Yang5550af42008-10-15 20:15:06 +0800704int kvm_request_irq_source_id(struct kvm *kvm);
705void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300706
Sheng Yang522c68c2009-04-27 20:35:43 +0800707/* For vcpu->arch.iommu_flags */
708#define KVM_IOMMU_CACHE_COHERENCY 0x1
709
Joerg Roedel19de40a2008-12-03 14:43:34 +0100710#ifdef CONFIG_IOMMU_API
Marcelo Tosatti3ad26d82009-12-23 14:35:20 -0200711int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
Alex Williamson32f6daa2012-04-11 09:51:49 -0600712void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot);
Weidong Han260782b2008-12-02 21:03:39 +0800713int kvm_iommu_map_guest(struct kvm *kvm);
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300714int kvm_iommu_unmap_guest(struct kvm *kvm);
Weidong Han260782b2008-12-02 21:03:39 +0800715int kvm_assign_device(struct kvm *kvm,
716 struct kvm_assigned_dev_kernel *assigned_dev);
Weidong Han0a920352008-12-02 21:24:23 +0800717int kvm_deassign_device(struct kvm *kvm,
718 struct kvm_assigned_dev_kernel *assigned_dev);
Joerg Roedel19de40a2008-12-03 14:43:34 +0100719#else /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300720static inline int kvm_iommu_map_pages(struct kvm *kvm,
Jan Kiszkad7a79b62010-10-14 13:59:04 +0200721 struct kvm_memory_slot *slot)
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300722{
723 return 0;
724}
725
Alex Williamson32f6daa2012-04-11 09:51:49 -0600726static inline void kvm_iommu_unmap_pages(struct kvm *kvm,
727 struct kvm_memory_slot *slot)
728{
729}
730
Weidong Han260782b2008-12-02 21:03:39 +0800731static inline int kvm_iommu_map_guest(struct kvm *kvm)
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300732{
733 return -ENODEV;
734}
735
736static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
737{
738 return 0;
739}
Weidong Han260782b2008-12-02 21:03:39 +0800740
741static inline int kvm_assign_device(struct kvm *kvm,
742 struct kvm_assigned_dev_kernel *assigned_dev)
743{
744 return 0;
745}
Weidong Han0a920352008-12-02 21:24:23 +0800746
747static inline int kvm_deassign_device(struct kvm *kvm,
748 struct kvm_assigned_dev_kernel *assigned_dev)
749{
750 return 0;
751}
Joerg Roedel19de40a2008-12-03 14:43:34 +0100752#endif /* CONFIG_IOMMU_API */
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300753
Frederic Weisbecker6a616712012-12-16 20:00:34 +0100754static inline void __guest_enter(void)
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200755{
Frederic Weisbeckerb0809352012-10-05 23:07:19 +0200756 /*
757 * This is running in ioctl context so we can avoid
758 * the call to vtime_account() with its unnecessary idle check.
759 */
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +0100760 vtime_account_system(current);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200761 current->flags |= PF_VCPU;
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +0100762}
763
Frederic Weisbecker6a616712012-12-16 20:00:34 +0100764static inline void __guest_exit(void)
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +0100765{
766 /*
767 * This is running in ioctl context so we can avoid
768 * the call to vtime_account() with its unnecessary idle check.
769 */
770 vtime_account_system(current);
771 current->flags &= ~PF_VCPU;
772}
773
Frederic Weisbecker6a616712012-12-16 20:00:34 +0100774#ifdef CONFIG_CONTEXT_TRACKING
775extern void guest_enter(void);
776extern void guest_exit(void);
777
778#else /* !CONFIG_CONTEXT_TRACKING */
779static inline void guest_enter(void)
780{
781 __guest_enter();
782}
783
784static inline void guest_exit(void)
785{
786 __guest_exit();
787}
788#endif /* !CONFIG_CONTEXT_TRACKING */
789
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +0100790static inline void kvm_guest_enter(void)
791{
792 unsigned long flags;
793
794 BUG_ON(preemptible());
795
796 local_irq_save(flags);
797 guest_enter();
798 local_irq_restore(flags);
799
Gleb Natapov8fa22062011-05-04 16:31:04 +0300800 /* KVM does not hold any references to rcu protected data when it
801 * switches CPU into a guest mode. In fact switching to a guest mode
802 * is very similar to exiting to userspase from rcu point of view. In
803 * addition CPU may stay in a guest mode for quite a long time (up to
804 * one time slice). Lets treat guest mode as quiescent state, just like
805 * we do with user-mode execution.
806 */
807 rcu_virt_note_context_switch(smp_processor_id());
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200808}
809
810static inline void kvm_guest_exit(void)
811{
Frederic Weisbeckerc11f11f2013-01-21 00:50:22 +0100812 unsigned long flags;
813
814 local_irq_save(flags);
815 guest_exit();
816 local_irq_restore(flags);
Laurent Vivierd172fcd2007-10-15 17:00:19 +0200817}
818
Paul Mackerras9d4cba72012-01-12 20:09:51 +0000819/*
820 * search_memslots() and __gfn_to_memslot() are here because they are
821 * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
822 * gfn_to_memslot() itself isn't here as an inline because that would
823 * bloat other code too much.
824 */
825static inline struct kvm_memory_slot *
826search_memslots(struct kvm_memslots *slots, gfn_t gfn)
827{
828 struct kvm_memory_slot *memslot;
829
830 kvm_for_each_memslot(memslot, slots)
831 if (gfn >= memslot->base_gfn &&
832 gfn < memslot->base_gfn + memslot->npages)
833 return memslot;
834
835 return NULL;
836}
837
838static inline struct kvm_memory_slot *
839__gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
840{
841 return search_memslots(slots, gfn);
842}
843
Gavin Shan66a03502012-08-24 16:50:28 +0800844static inline unsigned long
845__gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn)
846{
847 return slot->userspace_addr + (gfn - slot->base_gfn) * PAGE_SIZE;
848}
849
Xiao Guangrong0ee8dcb2011-03-09 15:41:59 +0800850static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
851{
852 return gfn_to_memslot(kvm, gfn)->id;
853}
854
Takuya Yoshikawafb03cb62012-02-08 12:59:10 +0900855static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
856{
857 /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
858 return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) -
859 (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));
860}
861
Takuya Yoshikawad19a7482012-07-02 17:54:30 +0900862static inline gfn_t
863hva_to_gfn_memslot(unsigned long hva, struct kvm_memory_slot *slot)
Xiao Guangrong887c08a2010-08-22 19:10:28 +0800864{
Takuya Yoshikawad19a7482012-07-02 17:54:30 +0900865 gfn_t gfn_offset = (hva - slot->userspace_addr) >> PAGE_SHIFT;
866
867 return slot->base_gfn + gfn_offset;
Xiao Guangrong887c08a2010-08-22 19:10:28 +0800868}
869
Avi Kivity1755fbc2007-11-21 14:44:45 +0200870static inline gpa_t gfn_to_gpa(gfn_t gfn)
871{
872 return (gpa_t)gfn << PAGE_SHIFT;
873}
Avi Kivity6aa8b732006-12-10 02:21:36 -0800874
Joerg Roedelc30a3582010-09-10 17:30:48 +0200875static inline gfn_t gpa_to_gfn(gpa_t gpa)
876{
877 return (gfn_t)(gpa >> PAGE_SHIFT);
878}
879
Ben-Ami Yassour62c476c2008-09-14 03:48:28 +0300880static inline hpa_t pfn_to_hpa(pfn_t pfn)
881{
882 return (hpa_t)pfn << PAGE_SHIFT;
883}
884
Marcelo Tosatti2f599712008-05-27 12:10:20 -0300885static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
Avi Kivity2f52d582008-01-16 12:49:30 +0200886{
887 set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
888}
889
Avi Kivityba1389b2007-11-18 16:24:12 +0200890enum kvm_stat_kind {
891 KVM_STAT_VM,
892 KVM_STAT_VCPU,
893};
894
Hollis Blanchard417bc302007-10-31 17:24:23 -0500895struct kvm_stats_debugfs_item {
896 const char *name;
897 int offset;
Avi Kivityba1389b2007-11-18 16:24:12 +0200898 enum kvm_stat_kind kind;
Hollis Blanchard417bc302007-10-31 17:24:23 -0500899 struct dentry *dentry;
900};
901extern struct kvm_stats_debugfs_item debugfs_entries[];
Hollis Blanchard76f7c872008-04-15 16:05:42 -0500902extern struct dentry *kvm_debugfs_dir;
Feng(Eric) Liud4c9ff22008-04-10 08:47:53 -0400903
Marc Zyngier36c1ed82012-06-15 15:07:24 -0400904#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
Christoffer Dall8ca40a72012-10-14 23:10:18 -0400905static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq)
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200906{
Christoffer Dall8ca40a72012-10-14 23:10:18 -0400907 if (unlikely(kvm->mmu_notifier_count))
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200908 return 1;
909 /*
Paul Mackerrasa355aa52011-12-12 12:37:21 +0000910 * Ensure the read of mmu_notifier_count happens before the read
911 * of mmu_notifier_seq. This interacts with the smp_wmb() in
912 * mmu_notifier_invalidate_range_end to make sure that the caller
913 * either sees the old (non-zero) value of mmu_notifier_count or
914 * the new (incremented) value of mmu_notifier_seq.
915 * PowerPC Book3s HV KVM calls this under a per-page lock
916 * rather than under kvm->mmu_lock, for scalability, so
917 * can't rely on kvm->mmu_lock to keep things ordered.
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200918 */
Paul Mackerrasa355aa52011-12-12 12:37:21 +0000919 smp_rmb();
Christoffer Dall8ca40a72012-10-14 23:10:18 -0400920 if (kvm->mmu_notifier_seq != mmu_seq)
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200921 return 1;
922 return 0;
923}
924#endif
925
Marc Zyngier9900b4b2012-06-15 15:07:02 -0400926#ifdef KVM_CAP_IRQ_ROUTING
Avi Kivity399ec802008-11-19 13:58:46 +0200927
928#define KVM_MAX_IRQ_ROUTES 1024
929
930int kvm_setup_default_irq_routing(struct kvm *kvm);
931int kvm_set_irq_routing(struct kvm *kvm,
932 const struct kvm_irq_routing_entry *entries,
933 unsigned nr,
934 unsigned flags);
935void kvm_free_irq_routing(struct kvm *kvm);
936
Jan Kiszka07975ad2012-03-29 21:14:12 +0200937int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
938
Avi Kivity399ec802008-11-19 13:58:46 +0200939#else
940
941static inline void kvm_free_irq_routing(struct kvm *kvm) {}
942
943#endif
944
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400945#ifdef CONFIG_HAVE_KVM_EVENTFD
946
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400947void kvm_eventfd_init(struct kvm *kvm);
Alexander Graf914daba2012-10-09 00:22:59 +0200948int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
949
950#ifdef CONFIG_HAVE_KVM_IRQCHIP
Alex Williamsond4db2932012-06-29 09:56:08 -0600951int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400952void kvm_irqfd_release(struct kvm *kvm);
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200953void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *);
Alexander Graf914daba2012-10-09 00:22:59 +0200954#else
955static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
956{
957 return -EINVAL;
958}
959
960static inline void kvm_irqfd_release(struct kvm *kvm) {}
961#endif
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400962
963#else
964
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400965static inline void kvm_eventfd_init(struct kvm *kvm) {}
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200966
Alex Williamsond4db2932012-06-29 09:56:08 -0600967static inline int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400968{
969 return -EINVAL;
970}
971
972static inline void kvm_irqfd_release(struct kvm *kvm) {}
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200973
Alexander Graf27923eb2010-11-25 10:25:44 +0100974#ifdef CONFIG_HAVE_KVM_IRQCHIP
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200975static inline void kvm_irq_routing_update(struct kvm *kvm,
976 struct kvm_irq_routing_table *irq_rt)
977{
978 rcu_assign_pointer(kvm->irq_routing, irq_rt);
979}
Alexander Graf27923eb2010-11-25 10:25:44 +0100980#endif
Michael S. Tsirkinbd2b53b2010-11-18 19:09:08 +0200981
Gregory Haskinsd34e6b12009-07-07 17:08:49 -0400982static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
983{
984 return -ENOSYS;
985}
Gregory Haskins721eecbf2009-05-20 10:30:49 -0400986
987#endif /* CONFIG_HAVE_KVM_EVENTFD */
988
Gleb Natapov73880c82009-06-09 15:56:28 +0300989#ifdef CONFIG_KVM_APIC_ARCHITECTURE
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300990static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
991{
Marcelo Tosattid3efc8e2009-06-17 10:07:59 -0300992 return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
Gleb Natapovc5af89b2009-06-09 15:56:26 +0300993}
Avi Kivity3e515702012-03-05 14:23:29 +0200994
995bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu);
996
997#else
998
999static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; }
1000
Avi Kivity6aa8b732006-12-10 02:21:36 -08001001#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +03001002
1003#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
1004
1005long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
1006 unsigned long arg);
1007
1008#else
1009
1010static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
1011 unsigned long arg)
1012{
1013 return -ENOTTY;
1014}
1015
Gleb Natapov73880c82009-06-09 15:56:28 +03001016#endif
Avi Kivitybfd99ff2009-08-26 14:57:50 +03001017
Avi Kivitya8eeb042010-05-10 12:34:53 +03001018static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
1019{
1020 set_bit(req, &vcpu->requests);
1021}
1022
Avi Kivitya8eeb042010-05-10 12:34:53 +03001023static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
1024{
Avi Kivity07198372010-05-10 13:08:26 +03001025 if (test_bit(req, &vcpu->requests)) {
1026 clear_bit(req, &vcpu->requests);
1027 return true;
1028 } else {
1029 return false;
1030 }
Avi Kivitya8eeb042010-05-10 12:34:53 +03001031}
1032
Raghavendra K T4c088492012-07-18 19:07:46 +05301033#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
1034
1035static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1036{
1037 vcpu->spin_loop.in_spin_loop = val;
1038}
1039static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1040{
1041 vcpu->spin_loop.dy_eligible = val;
1042}
1043
1044#else /* !CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
1045
1046static inline void kvm_vcpu_set_in_spin_loop(struct kvm_vcpu *vcpu, bool val)
1047{
1048}
1049
1050static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
1051{
1052}
1053
Raghavendra K T06e48c52012-07-19 15:17:52 +05301054static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu)
1055{
1056 return true;
1057}
1058
Raghavendra K T4c088492012-07-18 19:07:46 +05301059#endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
Kevin Hilmanf445f112013-03-14 17:13:46 -07001060#else
1061static inline void __guest_enter(void) { return; }
1062static inline void __guest_exit(void) { return; }
1063#endif /* IS_ENABLED(CONFIG_KVM) */
Avi Kivitybfd99ff2009-08-26 14:57:50 +03001064#endif