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Vegard Nossuma656c8e2008-07-22 21:27:11 +02001/*
Carsten Otte043405e2007-10-10 17:16:19 +02002 * Kernel-based Virtual Machine driver for Linux
3 *
4 * This header defines architecture specific interfaces, x86 version
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2. See
7 * the COPYING file in the top-level directory.
8 *
9 */
10
H. Peter Anvin1965aae2008-10-22 22:26:29 -070011#ifndef _ASM_X86_KVM_HOST_H
12#define _ASM_X86_KVM_HOST_H
Carsten Otte043405e2007-10-10 17:16:19 +020013
Zhang Xiantao34c16ee2007-10-20 15:34:38 +080014#include <linux/types.h>
15#include <linux/mm.h>
Andrea Arcangelie930bff2008-07-25 16:24:52 +020016#include <linux/mmu_notifier.h>
Marcelo Tosatti229456f2009-06-17 09:22:14 -030017#include <linux/tracepoint.h>
Zhang Xiantao34c16ee2007-10-20 15:34:38 +080018
19#include <linux/kvm.h>
20#include <linux/kvm_para.h>
Avi Kivityedf88412007-12-16 11:02:48 +020021#include <linux/kvm_types.h>
Zhang Xiantao34c16ee2007-10-20 15:34:38 +080022
Gerd Hoffmann50d0a0f2008-06-03 16:17:31 +020023#include <asm/pvclock-abi.h>
Hollis Blancharde01a1b52007-12-03 15:30:25 -060024#include <asm/desc.h>
Sheng Yang0bed3b52008-10-09 16:01:54 +080025#include <asm/mtrr.h>
Alexander Graf9962d032008-11-25 20:17:02 +010026#include <asm/msr-index.h>
Hollis Blancharde01a1b52007-12-03 15:30:25 -060027
Avi Kivity0680fe52009-12-27 17:00:46 +020028#define KVM_MAX_VCPUS 64
Avi Kivity69a9f692008-03-21 12:38:23 +020029#define KVM_MEMORY_SLOTS 32
30/* memory slots that does not exposed to userspace */
31#define KVM_PRIVATE_MEM_SLOTS 4
32
33#define KVM_PIO_PAGE_OFFSET 1
Laurent Vivier542472b2008-05-30 16:05:55 +020034#define KVM_COALESCED_MMIO_PAGE_OFFSET 2
Avi Kivity69a9f692008-03-21 12:38:23 +020035
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080036#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
37#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
Joe Perches7d76b4d2008-03-23 01:02:34 -070038#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \
39 0xFFFFFF0000000000ULL)
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080040
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080041#define INVALID_PAGE (~(hpa_t)0)
42#define UNMAPPED_GVA (~(gpa_t)0)
43
Joerg Roedelec04b262009-06-19 15:16:23 +020044/* KVM Hugepage definitions for x86 */
Joerg Roedel04326ca2009-07-27 16:30:47 +020045#define KVM_NR_PAGE_SIZES 3
Joerg Roedelec04b262009-06-19 15:16:23 +020046#define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + (((x) - 1) * 9))
47#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
48#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
49#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
Marcelo Tosatti05da4552008-02-23 11:44:30 -030050
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080051#define DE_VECTOR 0
Jan Kiszka19bd8af2008-07-13 13:40:55 +020052#define DB_VECTOR 1
Jan Kiszka77ab6db2008-07-14 12:28:51 +020053#define BP_VECTOR 3
54#define OF_VECTOR 4
55#define BR_VECTOR 5
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080056#define UD_VECTOR 6
57#define NM_VECTOR 7
58#define DF_VECTOR 8
59#define TS_VECTOR 10
60#define NP_VECTOR 11
61#define SS_VECTOR 12
62#define GP_VECTOR 13
63#define PF_VECTOR 14
Jan Kiszka77ab6db2008-07-14 12:28:51 +020064#define MF_VECTOR 16
Joerg Roedel53371b52008-04-09 14:15:30 +020065#define MC_VECTOR 18
Zhang Xiantaocd6e8f82007-11-19 14:33:37 +080066
67#define SELECTOR_TI_MASK (1 << 2)
68#define SELECTOR_RPL_MASK 0x03
69
70#define IOPL_SHIFT 12
71
Zhang Xiantaod69fb812007-12-14 09:54:20 +080072#define KVM_ALIAS_SLOTS 4
73
Zhang Xiantaod657a982007-12-14 09:41:22 +080074#define KVM_PERMILLE_MMU_PAGES 20
75#define KVM_MIN_ALLOC_MMU_PAGES 64
Dong, Eddie1ae0a132008-01-07 13:20:25 +020076#define KVM_MMU_HASH_SHIFT 10
77#define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
Zhang Xiantaod657a982007-12-14 09:41:22 +080078#define KVM_MIN_FREE_MMU_PAGES 5
79#define KVM_REFILL_PAGES 25
80#define KVM_MAX_CPUID_ENTRIES 40
Sheng Yang0bed3b52008-10-09 16:01:54 +080081#define KVM_NR_FIXED_MTRR_REGION 88
Avi Kivity9ba075a2008-05-26 20:06:35 +030082#define KVM_NR_VAR_MTRR 8
Zhang Xiantaod657a982007-12-14 09:41:22 +080083
Zhang Xiantaoe9b11c12007-11-14 20:38:21 +080084extern spinlock_t kvm_lock;
85extern struct list_head vm_list;
86
Zhang Xiantaod657a982007-12-14 09:41:22 +080087struct kvm_vcpu;
88struct kvm;
89
Marcelo Tosatti5fdbf972008-06-27 14:58:02 -030090enum kvm_reg {
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +080091 VCPU_REGS_RAX = 0,
92 VCPU_REGS_RCX = 1,
93 VCPU_REGS_RDX = 2,
94 VCPU_REGS_RBX = 3,
95 VCPU_REGS_RSP = 4,
96 VCPU_REGS_RBP = 5,
97 VCPU_REGS_RSI = 6,
98 VCPU_REGS_RDI = 7,
99#ifdef CONFIG_X86_64
100 VCPU_REGS_R8 = 8,
101 VCPU_REGS_R9 = 9,
102 VCPU_REGS_R10 = 10,
103 VCPU_REGS_R11 = 11,
104 VCPU_REGS_R12 = 12,
105 VCPU_REGS_R13 = 13,
106 VCPU_REGS_R14 = 14,
107 VCPU_REGS_R15 = 15,
108#endif
Marcelo Tosatti5fdbf972008-06-27 14:58:02 -0300109 VCPU_REGS_RIP,
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +0800110 NR_VCPU_REGS
111};
112
Avi Kivity6de4f3a2009-05-31 22:58:47 +0300113enum kvm_reg_ex {
114 VCPU_EXREG_PDPTR = NR_VCPU_REGS,
115};
116
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +0800117enum {
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +0800118 VCPU_SREG_ES,
Avi Kivity81609e32008-05-27 16:26:01 +0300119 VCPU_SREG_CS,
120 VCPU_SREG_SS,
121 VCPU_SREG_DS,
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +0800122 VCPU_SREG_FS,
123 VCPU_SREG_GS,
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +0800124 VCPU_SREG_TR,
125 VCPU_SREG_LDTR,
126};
127
Avi Kivity56e82312009-08-12 15:04:37 +0300128#include <asm/kvm_emulate.h>
Zhang Xiantao2b3ccfa2007-11-19 14:56:05 +0800129
Zhang Xiantaod657a982007-12-14 09:41:22 +0800130#define KVM_NR_MEM_OBJS 40
131
Jan Kiszka42dbaa52008-12-15 13:52:10 +0100132#define KVM_NR_DB_REGS 4
133
134#define DR6_BD (1 << 13)
135#define DR6_BS (1 << 14)
136#define DR6_FIXED_1 0xffff0ff0
137#define DR6_VOLATILE 0x0000e00f
138
139#define DR7_BP_EN_MASK 0x000000ff
140#define DR7_GE (1 << 9)
141#define DR7_GD (1 << 13)
142#define DR7_FIXED_1 0x00000400
143#define DR7_VOLATILE 0xffff23ff
144
Zhang Xiantaod657a982007-12-14 09:41:22 +0800145/*
146 * We don't want allocation failures within the mmu code, so we preallocate
147 * enough memory for a single page fault in a cache.
148 */
149struct kvm_mmu_memory_cache {
150 int nobjs;
151 void *objects[KVM_NR_MEM_OBJS];
152};
153
154#define NR_PTE_CHAIN_ENTRIES 5
155
156struct kvm_pte_chain {
157 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
158 struct hlist_node link;
159};
160
161/*
162 * kvm_mmu_page_role, below, is defined as:
163 *
164 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
165 * bits 4:7 - page table level for this shadow (1-4)
166 * bits 8:9 - page table quadrant for 2-level guests
Avi Kivityf6e2c022009-01-11 13:02:10 +0200167 * bit 16 - direct mapping of virtual to physical mapping at gfn
168 * used for real mode and two-dimensional paging
Zhang Xiantaod657a982007-12-14 09:41:22 +0800169 * bits 17:19 - common access permissions for all ptes in this shadow page
170 */
171union kvm_mmu_page_role {
172 unsigned word;
173 struct {
Joe Perches7d76b4d2008-03-23 01:02:34 -0700174 unsigned level:4;
Avi Kivity5b7e0102010-04-14 19:20:03 +0300175 unsigned cr4_pae:1;
Joe Perches7d76b4d2008-03-23 01:02:34 -0700176 unsigned quadrant:2;
177 unsigned pad_for_nice_hex_output:6;
Avi Kivityf6e2c022009-01-11 13:02:10 +0200178 unsigned direct:1;
Joe Perches7d76b4d2008-03-23 01:02:34 -0700179 unsigned access:3;
Marcelo Tosatti2e53d632008-02-20 14:47:24 -0500180 unsigned invalid:1;
Avi Kivity9645bb562009-03-31 11:31:54 +0300181 unsigned nxe:1;
Avi Kivity3dbe1412010-05-12 11:48:18 +0300182 unsigned cr0_wp:1;
Zhang Xiantaod657a982007-12-14 09:41:22 +0800183 };
184};
185
186struct kvm_mmu_page {
187 struct list_head link;
188 struct hlist_node hash_link;
189
190 /*
191 * The following two entries are used to key the shadow page in the
192 * hash table.
193 */
194 gfn_t gfn;
195 union kvm_mmu_page_role role;
196
197 u64 *spt;
198 /* hold the gfn of each spte inside spt */
199 gfn_t *gfns;
Sheng Yang291f26b2008-10-16 17:30:57 +0800200 /*
201 * One bit set per slot which has memory
202 * in this shadow page.
203 */
204 DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
Xiao Guangrong0571d362010-04-16 21:27:54 +0800205 bool multimapped; /* More than one parent_pte? */
Marcelo Tosatti4731d4c2008-09-23 13:18:39 -0300206 bool unsync;
Xiao Guangrong0571d362010-04-16 21:27:54 +0800207 int root_count; /* Currently serving as active root */
Marcelo Tosatti60c8aec2008-12-01 22:32:02 -0200208 unsigned int unsync_children;
Zhang Xiantaod657a982007-12-14 09:41:22 +0800209 union {
210 u64 *parent_pte; /* !multimapped */
211 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
212 };
Marcelo Tosatti0074ff62008-09-23 13:18:40 -0300213 DECLARE_BITMAP(unsync_child_bitmap, 512);
Zhang Xiantaod657a982007-12-14 09:41:22 +0800214};
215
Dave Hansen6ad18fb2008-08-11 10:01:49 -0700216struct kvm_pv_mmu_op_buffer {
217 void *ptr;
218 unsigned len;
219 unsigned processed;
220 char buf[512] __aligned(sizeof(long));
221};
222
Avi Kivity1c083642009-01-04 12:39:07 +0200223struct kvm_pio_request {
224 unsigned long count;
Avi Kivity1c083642009-01-04 12:39:07 +0200225 int in;
226 int port;
227 int size;
Avi Kivity1c083642009-01-04 12:39:07 +0200228};
229
Zhang Xiantaod657a982007-12-14 09:41:22 +0800230/*
231 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
232 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
233 * mode.
234 */
235struct kvm_mmu {
236 void (*new_cr3)(struct kvm_vcpu *vcpu);
237 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
238 void (*free)(struct kvm_vcpu *vcpu);
Gleb Natapov1871c602010-02-10 14:21:32 +0200239 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
240 u32 *error);
Zhang Xiantaod657a982007-12-14 09:41:22 +0800241 void (*prefetch_page)(struct kvm_vcpu *vcpu,
242 struct kvm_mmu_page *page);
Marcelo Tosattie8bc2172008-09-23 13:18:33 -0300243 int (*sync_page)(struct kvm_vcpu *vcpu,
244 struct kvm_mmu_page *sp);
Marcelo Tosattia7052892008-09-23 13:18:35 -0300245 void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
Zhang Xiantaod657a982007-12-14 09:41:22 +0800246 hpa_t root_hpa;
247 int root_level;
248 int shadow_root_level;
Avi Kivitya770f6f2008-12-21 19:20:09 +0200249 union kvm_mmu_page_role base_role;
Zhang Xiantaod657a982007-12-14 09:41:22 +0800250
251 u64 *pae_root;
Dong, Eddie82725b22009-03-30 16:21:08 +0800252 u64 rsvd_bits_mask[2][4];
Zhang Xiantaod657a982007-12-14 09:41:22 +0800253};
254
Zhang Xiantaoad312c72007-12-13 23:50:52 +0800255struct kvm_vcpu_arch {
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800256 u64 host_tsc;
Marcelo Tosatti5fdbf972008-06-27 14:58:02 -0300257 /*
258 * rip and regs accesses must go through
259 * kvm_{register,rip}_{read,write} functions.
260 */
261 unsigned long regs[NR_VCPU_REGS];
262 u32 regs_avail;
263 u32 regs_dirty;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800264
265 unsigned long cr0;
Avi Kivitye8467fd2009-12-29 18:43:06 +0200266 unsigned long cr0_guest_owned_bits;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800267 unsigned long cr2;
268 unsigned long cr3;
269 unsigned long cr4;
Avi Kivityfc78f512009-12-07 12:16:48 +0200270 unsigned long cr4_guest_owned_bits;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800271 unsigned long cr8;
Alexander Graf1371d902008-11-25 20:17:04 +0100272 u32 hflags;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800273 u64 pdptrs[4]; /* pae */
Avi Kivityf6801df2010-01-21 15:31:50 +0200274 u64 efer;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800275 u64 apic_base;
276 struct kvm_lapic *apic; /* kernel irqchip context */
Gleb Natapove1035712009-03-05 16:34:59 +0200277 int32_t apic_arb_prio;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800278 int mp_state;
279 int sipi_vector;
280 u64 ia32_misc_enable_msr;
Avi Kivityb209749f2007-10-22 16:50:39 +0200281 bool tpr_access_reporting;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800282
283 struct kvm_mmu mmu;
Dave Hansen6ad18fb2008-08-11 10:01:49 -0700284 /* only needed in kvm_pv_mmu_op() path, but it's hot so
285 * put it here to avoid allocation */
286 struct kvm_pv_mmu_op_buffer mmu_op_buffer;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800287
288 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
289 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
290 struct kvm_mmu_memory_cache mmu_page_cache;
291 struct kvm_mmu_memory_cache mmu_page_header_cache;
292
293 gfn_t last_pt_write_gfn;
294 int last_pt_write_count;
295 u64 *last_pte_updated;
Avi Kivity1b7fcd32008-05-15 13:51:35 +0300296 gfn_t last_pte_gfn;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800297
Avi Kivityd7824ff2007-12-30 12:29:05 +0200298 struct {
Anthony Liguori35149e22008-04-02 14:46:56 -0500299 gfn_t gfn; /* presumed gfn during guest pte update */
300 pfn_t pfn; /* pfn corresponding to that gfn */
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200301 unsigned long mmu_seq;
Avi Kivityd7824ff2007-12-30 12:29:05 +0200302 } update_pte;
303
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800304 struct i387_fxsave_struct host_fx_image;
305 struct i387_fxsave_struct guest_fx_image;
306
307 gva_t mmio_fault_cr2;
308 struct kvm_pio_request pio;
309 void *pio_data;
310
Gleb Natapov66fd3f72009-05-11 13:35:50 +0300311 u8 event_exit_inst_len;
312
Avi Kivity298101d2007-11-25 13:41:11 +0200313 struct kvm_queued_exception {
314 bool pending;
315 bool has_error_code;
Joerg Roedelce7ddec2010-04-22 12:33:13 +0200316 bool reinject;
Avi Kivity298101d2007-11-25 13:41:11 +0200317 u8 nr;
318 u32 error_code;
319 } exception;
320
Avi Kivity937a7ea2008-07-03 15:17:01 +0300321 struct kvm_queued_interrupt {
322 bool pending;
Gleb Natapov66fd3f72009-05-11 13:35:50 +0300323 bool soft;
Avi Kivity937a7ea2008-07-03 15:17:01 +0300324 u8 nr;
325 } interrupt;
326
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800327 int halt_request; /* real mode on Intel only */
328
329 int cpuid_nent;
Dan Kenigsberg07716712007-11-21 17:10:04 +0200330 struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800331 /* emulate context */
332
333 struct x86_emulate_ctxt emulate_ctxt;
Glauber de Oliveira Costa18068522008-02-15 17:52:47 -0200334
335 gpa_t time;
Gerd Hoffmann50d0a0f2008-06-03 16:17:31 +0200336 struct pvclock_vcpu_time_info hv_clock;
337 unsigned int hv_clock_tsc_khz;
Glauber de Oliveira Costa18068522008-02-15 17:52:47 -0200338 unsigned int time_offset;
339 struct page *time_page;
Sheng Yang3419ffc2008-05-15 09:52:48 +0800340
341 bool nmi_pending;
Avi Kivity668f6122008-07-02 09:28:55 +0300342 bool nmi_injected;
Avi Kivity9ba075a2008-05-26 20:06:35 +0300343
Sheng Yang0bed3b52008-10-09 16:01:54 +0800344 struct mtrr_state_type mtrr_state;
345 u32 pat;
Jan Kiszka42dbaa52008-12-15 13:52:10 +0100346
347 int switch_db_regs;
Jan Kiszka42dbaa52008-12-15 13:52:10 +0100348 unsigned long db[KVM_NR_DB_REGS];
349 unsigned long dr6;
350 unsigned long dr7;
351 unsigned long eff_db[KVM_NR_DB_REGS];
Huang Ying890ca9a2009-05-11 16:48:15 +0800352
353 u64 mcg_cap;
354 u64 mcg_status;
355 u64 mcg_ctl;
356 u64 *mce_banks;
Jan Kiszka94fe45d2009-10-18 13:24:44 +0200357
358 /* used for guest single stepping over the given code position */
Jan Kiszka94fe45d2009-10-18 13:24:44 +0200359 unsigned long singlestep_rip;
Jan Kiszkaf92653e2010-02-23 17:47:55 +0100360
Gleb Natapov10388a02010-01-17 15:51:23 +0200361 /* fields used by HYPER-V emulation */
362 u64 hv_vapic;
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800363};
364
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800365struct kvm_mem_alias {
366 gfn_t base_gfn;
367 unsigned long npages;
368 gfn_t target_gfn;
Marcelo Tosattia983fb22009-12-23 14:35:23 -0200369#define KVM_ALIAS_INVALID 1UL
370 unsigned long flags;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800371};
372
Marcelo Tosattia983fb22009-12-23 14:35:23 -0200373#define KVM_ARCH_HAS_UNALIAS_INSTANTIATION
374
Marcelo Tosattifef9cce2009-12-23 14:35:17 -0200375struct kvm_mem_aliases {
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800376 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
Marcelo Tosattifef9cce2009-12-23 14:35:17 -0200377 int naliases;
378};
379
380struct kvm_arch {
381 struct kvm_mem_aliases *aliases;
Zhang Xiantaof05e70a2007-12-14 10:01:48 +0800382
383 unsigned int n_free_mmu_pages;
384 unsigned int n_requested_mmu_pages;
385 unsigned int n_alloc_mmu_pages;
Avi Kivity08e850c2010-03-15 13:59:57 +0200386 atomic_t invlpg_counter;
Zhang Xiantaof05e70a2007-12-14 10:01:48 +0800387 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
388 /*
389 * Hash table of struct kvm_mmu_page.
390 */
391 struct list_head active_mmu_pages;
Ben-Ami Yassour4d5c5d02008-07-28 19:26:26 +0300392 struct list_head assigned_dev_head;
Joerg Roedel19de40a2008-12-03 14:43:34 +0100393 struct iommu_domain *iommu_domain;
Sheng Yang522c68c2009-04-27 20:35:43 +0800394 int iommu_flags;
Zhang Xiantaod7deeeb02007-12-14 10:17:34 +0800395 struct kvm_pic *vpic;
396 struct kvm_ioapic *vioapic;
Sheng Yang78376992008-01-28 05:10:22 +0800397 struct kvm_pit *vpit;
Jan Kiszkacc6e4622008-10-20 10:20:03 +0200398 int vapics_in_nmi_mode;
Zhang Xiantaobfc6d222007-12-14 10:20:16 +0800399
Zhang Xiantaobfc6d222007-12-14 10:20:16 +0800400 unsigned int tss_addr;
401 struct page *apic_access_page;
Glauber de Oliveira Costa18068522008-02-15 17:52:47 -0200402
403 gpa_t wall_clock;
Sheng Yangb7ebfb02008-04-25 21:44:52 +0800404
405 struct page *ept_identity_pagetable;
406 bool ept_identity_pagetable_done;
Sheng Yangb927a3c2009-07-21 10:42:48 +0800407 gpa_t ept_identity_map_addr;
Sheng Yang5550af42008-10-15 20:15:06 +0800408
409 unsigned long irq_sources_bitmap;
Marcelo Tosatti53f658b32008-12-11 20:45:05 +0100410 u64 vm_init_tsc;
Glauber Costaafbcf7a2009-10-16 15:28:36 -0400411 s64 kvmclock_offset;
Ed Swierkffde22a2009-10-15 15:21:43 -0700412
413 struct kvm_xen_hvm_config xen_hvm_config;
Gleb Natapov55cd8e52010-01-17 15:51:22 +0200414
415 /* fields used by HYPER-V emulation */
416 u64 hv_guest_os_id;
417 u64 hv_hypercall;
Zhang Xiantaod69fb812007-12-14 09:54:20 +0800418};
419
Zhang Xiantao07114562007-12-14 10:23:23 +0800420struct kvm_vm_stat {
421 u32 mmu_shadow_zapped;
422 u32 mmu_pte_write;
423 u32 mmu_pte_updated;
424 u32 mmu_pde_zapped;
425 u32 mmu_flooded;
426 u32 mmu_recycled;
Avi Kivitydfc5aa02007-12-18 19:47:18 +0200427 u32 mmu_cache_miss;
Marcelo Tosatti4731d4c2008-09-23 13:18:39 -0300428 u32 mmu_unsync;
Zhang Xiantao07114562007-12-14 10:23:23 +0800429 u32 remote_tlb_flush;
Marcelo Tosatti05da4552008-02-23 11:44:30 -0300430 u32 lpages;
Zhang Xiantao07114562007-12-14 10:23:23 +0800431};
432
Zhang Xiantao77b4c252007-12-14 09:49:26 +0800433struct kvm_vcpu_stat {
434 u32 pf_fixed;
435 u32 pf_guest;
436 u32 tlb_flush;
437 u32 invlpg;
438
439 u32 exits;
440 u32 io_exits;
441 u32 mmio_exits;
442 u32 signal_exits;
443 u32 irq_window_exits;
Sheng Yangf08864b2008-05-15 18:23:25 +0800444 u32 nmi_window_exits;
Zhang Xiantao77b4c252007-12-14 09:49:26 +0800445 u32 halt_exits;
446 u32 halt_wakeup;
447 u32 request_irq_exits;
448 u32 irq_exits;
449 u32 host_state_reload;
450 u32 efer_reload;
451 u32 fpu_reload;
452 u32 insn_emulation;
453 u32 insn_emulation_fail;
Amit Shahf11c3a82008-02-21 01:00:30 +0530454 u32 hypercalls;
Avi Kivityfa89a812008-09-01 15:57:51 +0300455 u32 irq_injections;
Jan Kiszkac4abb7c2008-09-26 09:30:55 +0200456 u32 nmi_injections;
Zhang Xiantao77b4c252007-12-14 09:49:26 +0800457};
Zhang Xiantaoad312c72007-12-13 23:50:52 +0800458
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800459struct kvm_x86_ops {
460 int (*cpu_has_kvm_support)(void); /* __init */
461 int (*disabled_by_bios)(void); /* __init */
Alexander Graf10474ae2009-09-15 11:37:46 +0200462 int (*hardware_enable)(void *dummy);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800463 void (*hardware_disable)(void *dummy);
464 void (*check_processor_compatibility)(void *rtn);
465 int (*hardware_setup)(void); /* __init */
466 void (*hardware_unsetup)(void); /* __exit */
Avi Kivity774ead32007-12-26 13:57:04 +0200467 bool (*cpu_has_accelerated_tpr)(void);
Sheng Yang0e851882009-12-18 16:48:46 +0800468 void (*cpuid_update)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800469
470 /* Create, but do not attach this VCPU */
471 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
472 void (*vcpu_free)(struct kvm_vcpu *vcpu);
473 int (*vcpu_reset)(struct kvm_vcpu *vcpu);
474
475 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
476 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
477 void (*vcpu_put)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800478
Jan Kiszka355be0b2009-10-03 00:31:21 +0200479 void (*set_guest_debug)(struct kvm_vcpu *vcpu,
480 struct kvm_guest_debug *dbg);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800481 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
482 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
483 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
484 void (*get_segment)(struct kvm_vcpu *vcpu,
485 struct kvm_segment *var, int seg);
Izik Eidus2e4d2652008-03-24 19:38:34 +0200486 int (*get_cpl)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800487 void (*set_segment)(struct kvm_vcpu *vcpu,
488 struct kvm_segment *var, int seg);
489 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
Avi Kivitye8467fd2009-12-29 18:43:06 +0200490 void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800491 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
492 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
493 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
494 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
495 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
Gleb Natapov89a27f42010-02-16 10:51:48 +0200496 void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
497 void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
498 void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
499 void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
Gleb Natapov020df072010-04-13 10:05:23 +0300500 void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
Marcelo Tosatti5fdbf972008-06-27 14:58:02 -0300501 void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800502 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
503 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
Avi Kivity6b52d182010-01-21 15:31:47 +0200504 void (*fpu_activate)(struct kvm_vcpu *vcpu);
Avi Kivity02daab22009-12-30 12:40:26 +0200505 void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800506
507 void (*tlb_flush)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800508
Avi Kivity851ba692009-08-24 11:10:17 +0300509 void (*run)(struct kvm_vcpu *vcpu);
510 int (*handle_exit)(struct kvm_vcpu *vcpu);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800511 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
Glauber Costa2809f5d2009-05-12 16:21:05 -0400512 void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
513 u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800514 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
515 unsigned char *hypercall_addr);
Gleb Natapov66fd3f72009-05-11 13:35:50 +0300516 void (*set_irq)(struct kvm_vcpu *vcpu);
Gleb Natapov95ba8273132009-04-21 17:45:08 +0300517 void (*set_nmi)(struct kvm_vcpu *vcpu);
Avi Kivity298101d2007-11-25 13:41:11 +0200518 void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
Joerg Roedelce7ddec2010-04-22 12:33:13 +0200519 bool has_error_code, u32 error_code,
520 bool reinject);
Gleb Natapov78646122009-03-23 12:12:11 +0200521 int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
Gleb Natapov95ba8273132009-04-21 17:45:08 +0300522 int (*nmi_allowed)(struct kvm_vcpu *vcpu);
Jan Kiszka3cfc3092009-11-12 01:04:25 +0100523 bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
524 void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
Gleb Natapov95ba8273132009-04-21 17:45:08 +0300525 void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
526 void (*enable_irq_window)(struct kvm_vcpu *vcpu);
527 void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800528 int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
Sheng Yang67253af2008-04-25 10:20:22 +0800529 int (*get_tdp_level)(void);
Sheng Yang4b12f0d2009-04-27 20:35:42 +0800530 u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
Sheng Yang17cc3932010-01-05 19:02:27 +0800531 int (*get_lpage_level)(void);
Sheng Yang4e47c7a2009-12-18 16:48:47 +0800532 bool (*rdtscp_supported)(void);
Joerg Roedel344f4142009-07-27 16:30:48 +0200533
Joerg Roedeld4330ef2010-04-22 12:33:11 +0200534 void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
535
Marcelo Tosatti229456f2009-06-17 09:22:14 -0300536 const struct trace_print_flags *exit_reasons_str;
Zhang Xiantaoea4a5ff2007-11-19 14:40:47 +0800537};
538
Zhang Xiantao97896d02007-11-14 20:09:30 +0800539extern struct kvm_x86_ops *kvm_x86_ops;
540
Zhang Xiantao54f15852007-11-19 15:24:28 +0800541int kvm_mmu_module_init(void);
542void kvm_mmu_module_exit(void);
543
544void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
545int kvm_mmu_create(struct kvm_vcpu *vcpu);
546int kvm_mmu_setup(struct kvm_vcpu *vcpu);
547void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
Sheng Yang7b523452008-04-25 21:13:50 +0800548void kvm_mmu_set_base_ptes(u64 base_pte);
549void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
Sheng Yang4b12f0d2009-04-27 20:35:42 +0800550 u64 dirty_mask, u64 nx_mask, u64 x_mask);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800551
552int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
553void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
554void kvm_mmu_zap_all(struct kvm *kvm);
Zhang Xiantao3ad82a72007-11-20 13:11:38 +0800555unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800556void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
557
Joerg Roedelcc4b6872008-02-07 13:47:43 +0100558int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
559
Marcelo Tosatti3200f402008-03-29 20:17:59 -0300560int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
Avi Kivity9f811282008-03-02 14:06:05 +0200561 const void *val, int bytes);
Marcelo Tosatti2f333bc2008-02-22 12:21:37 -0500562int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
563 gpa_t addr, unsigned long *ret);
Sheng Yang4b12f0d2009-04-27 20:35:42 +0800564u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
Marcelo Tosatti2f333bc2008-02-22 12:21:37 -0500565
566extern bool tdp_enabled;
Avi Kivity9f811282008-03-02 14:06:05 +0200567
Zhang Xiantao54f15852007-11-19 15:24:28 +0800568enum emulation_result {
569 EMULATE_DONE, /* no further processing */
570 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
571 EMULATE_FAIL, /* can't emulate this instruction */
572};
573
Sheng Yang571008d2008-01-02 14:49:22 +0800574#define EMULTYPE_NO_DECODE (1 << 0)
575#define EMULTYPE_TRAP_UD (1 << 1)
Gleb Natapovba8afb62009-04-12 13:36:57 +0300576#define EMULTYPE_SKIP (1 << 2)
Avi Kivity851ba692009-08-24 11:10:17 +0300577int emulate_instruction(struct kvm_vcpu *vcpu,
Sheng Yang571008d2008-01-02 14:49:22 +0800578 unsigned long cr2, u16 error_code, int emulation_type);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800579void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
580void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
581void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800582
Joerg Roedelf2b4b7d2008-01-31 14:57:37 +0100583void kvm_enable_efer_bits(u64);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800584int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
585int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
586
587struct x86_emulate_ctxt;
588
Gleb Natapovcf8f70b2010-03-18 15:20:23 +0200589int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800590void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
591int kvm_emulate_halt(struct kvm_vcpu *vcpu);
592int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
593int emulate_clts(struct kvm_vcpu *vcpu);
594int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
595 unsigned long *dest);
596int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
597 unsigned long value);
598
Guillaume Thouvenin3e6e0aa2008-05-27 10:18:46 +0200599void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
Gleb Natapovc6975182010-02-18 12:15:01 +0200600int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
Guillaume Thouvenin3e6e0aa2008-05-27 10:18:46 +0200601
Jan Kiszkae269fb22010-04-14 15:51:09 +0200602int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
603 bool has_error_code, u32 error_code);
Izik Eidus37817f22008-03-24 23:14:53 +0200604
Avi Kivity2d3ad1f2008-02-24 11:20:43 +0200605void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
Joerg Roedel9c204562008-04-01 16:44:56 +0200606void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
607void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
608void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
Gleb Natapov020df072010-04-13 10:05:23 +0300609int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
610int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
Avi Kivity2d3ad1f2008-02-24 11:20:43 +0200611unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
612void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800613void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
614
615int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
616int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
617
Jan Kiszka91586a32009-10-05 13:07:21 +0200618unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
619void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
620
Avi Kivity298101d2007-11-25 13:41:11 +0200621void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
622void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
Joerg Roedelce7ddec2010-04-22 12:33:13 +0200623void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
624void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
Avi Kivityc3c91fe2007-11-25 14:04:58 +0200625void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
626 u32 error_code);
Avi Kivity0a79b002009-09-01 12:03:25 +0300627bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
Avi Kivity298101d2007-11-25 13:41:11 +0200628
Gleb Natapov49256632009-02-04 17:28:14 +0200629int kvm_pic_set_irq(void *opaque, int irq, int level);
Xiantao Zhang3de42dc2008-10-06 13:48:45 +0800630
Sheng Yang3419ffc2008-05-15 09:52:48 +0800631void kvm_inject_nmi(struct kvm_vcpu *vcpu);
632
Zhang Xiantao54f15852007-11-19 15:24:28 +0800633void fx_init(struct kvm_vcpu *vcpu);
634
Zhang Xiantao54f15852007-11-19 15:24:28 +0800635int emulator_write_emulated(unsigned long addr,
636 const void *val,
637 unsigned int bytes,
638 struct kvm_vcpu *vcpu);
639
Avi Kivityd835dfe2007-11-21 02:57:59 +0200640void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800641void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
Marcelo Tosattiad218f82008-12-01 22:32:05 -0200642 const u8 *new, int bytes,
643 bool guest_initiated);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800644int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
645void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
646int kvm_mmu_load(struct kvm_vcpu *vcpu);
647void kvm_mmu_unload(struct kvm_vcpu *vcpu);
Marcelo Tosatti0ba73cd2008-09-23 13:18:34 -0300648void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
Gleb Natapov1871c602010-02-10 14:21:32 +0200649gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
650gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
651gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
652gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, u32 *error);
Zhang Xiantao54f15852007-11-19 15:24:28 +0800653
654int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
655
656int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
657
Avi Kivity30677142007-10-28 18:48:59 +0200658int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
Marcelo Tosattia7052892008-09-23 13:18:35 -0300659void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
Zhang Xiantao34c16ee2007-10-20 15:34:38 +0800660
Joerg Roedel18552672008-02-07 13:47:41 +0100661void kvm_enable_tdp(void);
Joerg Roedel5f4cb662008-07-14 20:36:36 +0200662void kvm_disable_tdp(void);
Joerg Roedel18552672008-02-07 13:47:41 +0100663
Carsten Ottede7d7892007-10-30 18:44:25 +0100664int complete_pio(struct kvm_vcpu *vcpu);
Gleb Natapovf850e2e2010-02-10 14:21:33 +0200665bool kvm_check_iopl(struct kvm_vcpu *vcpu);
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800666
Izik Eidus28430992008-10-03 17:40:32 +0300667struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn);
668
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800669static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
670{
671 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
672
673 return (struct kvm_mmu_page *)page_private(page);
674}
675
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300676static inline u16 kvm_read_fs(void)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800677{
678 u16 seg;
679 asm("mov %%fs, %0" : "=g"(seg));
680 return seg;
681}
682
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300683static inline u16 kvm_read_gs(void)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800684{
685 u16 seg;
686 asm("mov %%gs, %0" : "=g"(seg));
687 return seg;
688}
689
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300690static inline u16 kvm_read_ldt(void)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800691{
692 u16 ldt;
693 asm("sldt %0" : "=g"(ldt));
694 return ldt;
695}
696
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300697static inline void kvm_load_fs(u16 sel)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800698{
699 asm("mov %0, %%fs" : : "rm"(sel));
700}
701
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300702static inline void kvm_load_gs(u16 sel)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800703{
704 asm("mov %0, %%gs" : : "rm"(sel));
705}
706
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300707static inline void kvm_load_ldt(u16 sel)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800708{
709 asm("lldt %0" : : "rm"(sel));
710}
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800711
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800712#ifdef CONFIG_X86_64
713static inline unsigned long read_msr(unsigned long msr)
714{
715 u64 value;
716
717 rdmsrl(msr, value);
718 return value;
719}
720#endif
721
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300722static inline void kvm_fx_save(struct i387_fxsave_struct *image)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800723{
724 asm("fxsave (%0)":: "r" (image));
725}
726
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300727static inline void kvm_fx_restore(struct i387_fxsave_struct *image)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800728{
729 asm("fxrstor (%0)":: "r" (image));
730}
731
Avi Kivityd6e88ae2008-07-10 16:53:33 +0300732static inline void kvm_fx_finit(void)
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800733{
734 asm("finit");
735}
736
737static inline u32 get_rdx_init_val(void)
738{
739 return 0x600; /* P6 family */
740}
741
Avi Kivityc1a5d4f2007-11-25 14:12:03 +0200742static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
743{
744 kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
745}
746
Zhang Xiantaoec6d2732007-11-19 15:08:31 +0800747#define TSS_IOPB_BASE_OFFSET 0x66
748#define TSS_BASE_SIZE 0x68
749#define TSS_IOPB_SIZE (65536 / 8)
750#define TSS_REDIRECTION_SIZE (256 / 8)
Joe Perches7d76b4d2008-03-23 01:02:34 -0700751#define RMODE_TSS_SIZE \
752 (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
Hollis Blanchard53e0aa72007-12-03 16:15:26 -0600753
Izik Eidus37817f22008-03-24 23:14:53 +0200754enum {
755 TASK_SWITCH_CALL = 0,
756 TASK_SWITCH_IRET = 1,
757 TASK_SWITCH_JMP = 2,
758 TASK_SWITCH_GATE = 3,
759};
760
Alexander Graf1371d902008-11-25 20:17:04 +0100761#define HF_GIF_MASK (1 << 0)
Alexander Graf3d6368e2008-11-25 20:17:07 +0100762#define HF_HIF_MASK (1 << 1)
763#define HF_VINTR_MASK (1 << 2)
Gleb Natapov95ba8273132009-04-21 17:45:08 +0300764#define HF_NMI_MASK (1 << 3)
Gleb Natapov44c11432009-05-11 13:35:52 +0300765#define HF_IRET_MASK (1 << 4)
Alexander Graf1371d902008-11-25 20:17:04 +0100766
Avi Kivity4ecac3f2008-05-13 13:23:38 +0300767/*
768 * Hardware virtualization extension instructions may fault if a
769 * reboot turns off virtualization while processes are running.
770 * Trap the fault and ignore the instruction if that happens.
771 */
772asmlinkage void kvm_handle_fault_on_reboot(void);
773
774#define __kvm_handle_fault_on_reboot(insn) \
775 "666: " insn "\n\t" \
Eduardo Habkost18b13e52008-08-19 20:00:08 -0300776 ".pushsection .fixup, \"ax\" \n" \
Avi Kivity4ecac3f2008-05-13 13:23:38 +0300777 "667: \n\t" \
Avi Kivity8ceed3472008-08-14 21:25:47 +0300778 __ASM_SIZE(push) " $666b \n\t" \
Avi Kivity4ecac3f2008-05-13 13:23:38 +0300779 "jmp kvm_handle_fault_on_reboot \n\t" \
780 ".popsection \n\t" \
781 ".pushsection __ex_table, \"a\" \n\t" \
Avi Kivity8ceed3472008-08-14 21:25:47 +0300782 _ASM_PTR " 666b, 667b \n\t" \
Avi Kivity4ecac3f2008-05-13 13:23:38 +0300783 ".popsection"
784
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200785#define KVM_ARCH_WANT_MMU_NOTIFIER
786int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
787int kvm_age_hva(struct kvm *kvm, unsigned long hva);
Izik Eidus3da0dd42009-09-23 21:47:18 +0300788void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
Dong, Eddie82725b22009-03-30 16:21:08 +0800789int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
Gleb Natapova1b37102009-07-09 15:33:52 +0300790int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
791int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
Gleb Natapov0b717852009-07-09 15:33:53 +0300792int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
Andrea Arcangelie930bff2008-07-25 16:24:52 +0200793
Avi Kivity18863bd2009-09-07 11:12:18 +0300794void kvm_define_shared_msr(unsigned index, u32 msr);
Avi Kivityd5696722009-12-02 12:28:47 +0200795void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
Avi Kivity18863bd2009-09-07 11:12:18 +0300796
Jan Kiszkaf92653e2010-02-23 17:47:55 +0100797bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
798
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700799#endif /* _ASM_X86_KVM_HOST_H */