Commit | Line | Data |
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6aa8b732 AK |
1 | /* |
2 | * Kernel-based Virtual Machine driver for Linux | |
3 | * | |
4 | * AMD SVM support | |
5 | * | |
6 | * Copyright (C) 2006 Qumranet, Inc. | |
7 | * | |
8 | * Authors: | |
9 | * Yaniv Kamay <yaniv@qumranet.com> | |
10 | * Avi Kivity <avi@qumranet.com> | |
11 | * | |
12 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
13 | * the COPYING file in the top-level directory. | |
14 | * | |
15 | */ | |
34c16eec | 16 | #include "x86.h" |
e495606d AK |
17 | #include "kvm_svm.h" |
18 | #include "x86_emulate.h" | |
85f455f7 | 19 | #include "irq.h" |
e495606d | 20 | |
6aa8b732 | 21 | #include <linux/module.h> |
9d8f549d | 22 | #include <linux/kernel.h> |
6aa8b732 AK |
23 | #include <linux/vmalloc.h> |
24 | #include <linux/highmem.h> | |
e8edc6e0 | 25 | #include <linux/sched.h> |
6aa8b732 | 26 | |
e495606d | 27 | #include <asm/desc.h> |
6aa8b732 AK |
28 | |
29 | MODULE_AUTHOR("Qumranet"); | |
30 | MODULE_LICENSE("GPL"); | |
31 | ||
32 | #define IOPM_ALLOC_ORDER 2 | |
33 | #define MSRPM_ALLOC_ORDER 1 | |
34 | ||
35 | #define DB_VECTOR 1 | |
36 | #define UD_VECTOR 6 | |
37 | #define GP_VECTOR 13 | |
38 | ||
39 | #define DR7_GD_MASK (1 << 13) | |
40 | #define DR6_BD_MASK (1 << 13) | |
6aa8b732 AK |
41 | |
42 | #define SEG_TYPE_LDT 2 | |
43 | #define SEG_TYPE_BUSY_TSS16 3 | |
44 | ||
45 | #define KVM_EFER_LMA (1 << 10) | |
46 | #define KVM_EFER_LME (1 << 8) | |
47 | ||
80b7706e JR |
48 | #define SVM_FEATURE_NPT (1 << 0) |
49 | #define SVM_FEATURE_LBRV (1 << 1) | |
50 | #define SVM_DEATURE_SVML (1 << 2) | |
51 | ||
04d2cc77 AK |
52 | static void kvm_reput_irq(struct vcpu_svm *svm); |
53 | ||
a2fa3e9f GH |
54 | static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu) |
55 | { | |
fb3f0f51 | 56 | return container_of(vcpu, struct vcpu_svm, vcpu); |
a2fa3e9f GH |
57 | } |
58 | ||
6aa8b732 AK |
59 | unsigned long iopm_base; |
60 | unsigned long msrpm_base; | |
61 | ||
62 | struct kvm_ldttss_desc { | |
63 | u16 limit0; | |
64 | u16 base0; | |
65 | unsigned base1 : 8, type : 5, dpl : 2, p : 1; | |
66 | unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8; | |
67 | u32 base3; | |
68 | u32 zero1; | |
69 | } __attribute__((packed)); | |
70 | ||
71 | struct svm_cpu_data { | |
72 | int cpu; | |
73 | ||
5008fdf5 AK |
74 | u64 asid_generation; |
75 | u32 max_asid; | |
76 | u32 next_asid; | |
6aa8b732 AK |
77 | struct kvm_ldttss_desc *tss_desc; |
78 | ||
79 | struct page *save_area; | |
80 | }; | |
81 | ||
82 | static DEFINE_PER_CPU(struct svm_cpu_data *, svm_data); | |
80b7706e | 83 | static uint32_t svm_features; |
6aa8b732 AK |
84 | |
85 | struct svm_init_data { | |
86 | int cpu; | |
87 | int r; | |
88 | }; | |
89 | ||
90 | static u32 msrpm_ranges[] = {0, 0xc0000000, 0xc0010000}; | |
91 | ||
9d8f549d | 92 | #define NUM_MSR_MAPS ARRAY_SIZE(msrpm_ranges) |
6aa8b732 AK |
93 | #define MSRS_RANGE_SIZE 2048 |
94 | #define MSRS_IN_RANGE (MSRS_RANGE_SIZE * 8 / 2) | |
95 | ||
96 | #define MAX_INST_SIZE 15 | |
97 | ||
80b7706e JR |
98 | static inline u32 svm_has(u32 feat) |
99 | { | |
100 | return svm_features & feat; | |
101 | } | |
102 | ||
6aa8b732 AK |
103 | static inline u8 pop_irq(struct kvm_vcpu *vcpu) |
104 | { | |
105 | int word_index = __ffs(vcpu->irq_summary); | |
106 | int bit_index = __ffs(vcpu->irq_pending[word_index]); | |
107 | int irq = word_index * BITS_PER_LONG + bit_index; | |
108 | ||
109 | clear_bit(bit_index, &vcpu->irq_pending[word_index]); | |
110 | if (!vcpu->irq_pending[word_index]) | |
111 | clear_bit(word_index, &vcpu->irq_summary); | |
112 | return irq; | |
113 | } | |
114 | ||
115 | static inline void push_irq(struct kvm_vcpu *vcpu, u8 irq) | |
116 | { | |
117 | set_bit(irq, vcpu->irq_pending); | |
118 | set_bit(irq / BITS_PER_LONG, &vcpu->irq_summary); | |
119 | } | |
120 | ||
121 | static inline void clgi(void) | |
122 | { | |
123 | asm volatile (SVM_CLGI); | |
124 | } | |
125 | ||
126 | static inline void stgi(void) | |
127 | { | |
128 | asm volatile (SVM_STGI); | |
129 | } | |
130 | ||
131 | static inline void invlpga(unsigned long addr, u32 asid) | |
132 | { | |
133 | asm volatile (SVM_INVLPGA :: "a"(addr), "c"(asid)); | |
134 | } | |
135 | ||
136 | static inline unsigned long kvm_read_cr2(void) | |
137 | { | |
138 | unsigned long cr2; | |
139 | ||
140 | asm volatile ("mov %%cr2, %0" : "=r" (cr2)); | |
141 | return cr2; | |
142 | } | |
143 | ||
144 | static inline void kvm_write_cr2(unsigned long val) | |
145 | { | |
146 | asm volatile ("mov %0, %%cr2" :: "r" (val)); | |
147 | } | |
148 | ||
149 | static inline unsigned long read_dr6(void) | |
150 | { | |
151 | unsigned long dr6; | |
152 | ||
153 | asm volatile ("mov %%dr6, %0" : "=r" (dr6)); | |
154 | return dr6; | |
155 | } | |
156 | ||
157 | static inline void write_dr6(unsigned long val) | |
158 | { | |
159 | asm volatile ("mov %0, %%dr6" :: "r" (val)); | |
160 | } | |
161 | ||
162 | static inline unsigned long read_dr7(void) | |
163 | { | |
164 | unsigned long dr7; | |
165 | ||
166 | asm volatile ("mov %%dr7, %0" : "=r" (dr7)); | |
167 | return dr7; | |
168 | } | |
169 | ||
170 | static inline void write_dr7(unsigned long val) | |
171 | { | |
172 | asm volatile ("mov %0, %%dr7" :: "r" (val)); | |
173 | } | |
174 | ||
6aa8b732 AK |
175 | static inline void force_new_asid(struct kvm_vcpu *vcpu) |
176 | { | |
a2fa3e9f | 177 | to_svm(vcpu)->asid_generation--; |
6aa8b732 AK |
178 | } |
179 | ||
180 | static inline void flush_guest_tlb(struct kvm_vcpu *vcpu) | |
181 | { | |
182 | force_new_asid(vcpu); | |
183 | } | |
184 | ||
185 | static void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer) | |
186 | { | |
187 | if (!(efer & KVM_EFER_LMA)) | |
188 | efer &= ~KVM_EFER_LME; | |
189 | ||
a2fa3e9f | 190 | to_svm(vcpu)->vmcb->save.efer = efer | MSR_EFER_SVME_MASK; |
6aa8b732 AK |
191 | vcpu->shadow_efer = efer; |
192 | } | |
193 | ||
194 | static void svm_inject_gp(struct kvm_vcpu *vcpu, unsigned error_code) | |
195 | { | |
a2fa3e9f GH |
196 | struct vcpu_svm *svm = to_svm(vcpu); |
197 | ||
198 | svm->vmcb->control.event_inj = SVM_EVTINJ_VALID | | |
6aa8b732 AK |
199 | SVM_EVTINJ_VALID_ERR | |
200 | SVM_EVTINJ_TYPE_EXEPT | | |
201 | GP_VECTOR; | |
a2fa3e9f | 202 | svm->vmcb->control.event_inj_err = error_code; |
6aa8b732 AK |
203 | } |
204 | ||
205 | static void inject_ud(struct kvm_vcpu *vcpu) | |
206 | { | |
a2fa3e9f | 207 | to_svm(vcpu)->vmcb->control.event_inj = SVM_EVTINJ_VALID | |
6aa8b732 AK |
208 | SVM_EVTINJ_TYPE_EXEPT | |
209 | UD_VECTOR; | |
210 | } | |
211 | ||
6aa8b732 AK |
212 | static int is_page_fault(uint32_t info) |
213 | { | |
214 | info &= SVM_EVTINJ_VEC_MASK | SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID; | |
215 | return info == (PF_VECTOR | SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_EXEPT); | |
216 | } | |
217 | ||
218 | static int is_external_interrupt(u32 info) | |
219 | { | |
220 | info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID; | |
221 | return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR); | |
222 | } | |
223 | ||
224 | static void skip_emulated_instruction(struct kvm_vcpu *vcpu) | |
225 | { | |
a2fa3e9f GH |
226 | struct vcpu_svm *svm = to_svm(vcpu); |
227 | ||
228 | if (!svm->next_rip) { | |
6aa8b732 AK |
229 | printk(KERN_DEBUG "%s: NOP\n", __FUNCTION__); |
230 | return; | |
231 | } | |
d77c26fc | 232 | if (svm->next_rip - svm->vmcb->save.rip > MAX_INST_SIZE) |
6aa8b732 AK |
233 | printk(KERN_ERR "%s: ip 0x%llx next 0x%llx\n", |
234 | __FUNCTION__, | |
a2fa3e9f GH |
235 | svm->vmcb->save.rip, |
236 | svm->next_rip); | |
6aa8b732 | 237 | |
a2fa3e9f GH |
238 | vcpu->rip = svm->vmcb->save.rip = svm->next_rip; |
239 | svm->vmcb->control.int_state &= ~SVM_INTERRUPT_SHADOW_MASK; | |
c1150d8c DL |
240 | |
241 | vcpu->interrupt_window_open = 1; | |
6aa8b732 AK |
242 | } |
243 | ||
244 | static int has_svm(void) | |
245 | { | |
246 | uint32_t eax, ebx, ecx, edx; | |
247 | ||
1e885461 | 248 | if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) { |
6aa8b732 AK |
249 | printk(KERN_INFO "has_svm: not amd\n"); |
250 | return 0; | |
251 | } | |
252 | ||
253 | cpuid(0x80000000, &eax, &ebx, &ecx, &edx); | |
254 | if (eax < SVM_CPUID_FUNC) { | |
255 | printk(KERN_INFO "has_svm: can't execute cpuid_8000000a\n"); | |
256 | return 0; | |
257 | } | |
258 | ||
259 | cpuid(0x80000001, &eax, &ebx, &ecx, &edx); | |
260 | if (!(ecx & (1 << SVM_CPUID_FEATURE_SHIFT))) { | |
261 | printk(KERN_DEBUG "has_svm: svm not available\n"); | |
262 | return 0; | |
263 | } | |
264 | return 1; | |
265 | } | |
266 | ||
267 | static void svm_hardware_disable(void *garbage) | |
268 | { | |
269 | struct svm_cpu_data *svm_data | |
270 | = per_cpu(svm_data, raw_smp_processor_id()); | |
271 | ||
272 | if (svm_data) { | |
273 | uint64_t efer; | |
274 | ||
275 | wrmsrl(MSR_VM_HSAVE_PA, 0); | |
276 | rdmsrl(MSR_EFER, efer); | |
277 | wrmsrl(MSR_EFER, efer & ~MSR_EFER_SVME_MASK); | |
8b6d44c7 | 278 | per_cpu(svm_data, raw_smp_processor_id()) = NULL; |
6aa8b732 AK |
279 | __free_page(svm_data->save_area); |
280 | kfree(svm_data); | |
281 | } | |
282 | } | |
283 | ||
284 | static void svm_hardware_enable(void *garbage) | |
285 | { | |
286 | ||
287 | struct svm_cpu_data *svm_data; | |
288 | uint64_t efer; | |
05b3e0c2 | 289 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
290 | struct desc_ptr gdt_descr; |
291 | #else | |
6b68f01b | 292 | struct desc_ptr gdt_descr; |
6aa8b732 AK |
293 | #endif |
294 | struct desc_struct *gdt; | |
295 | int me = raw_smp_processor_id(); | |
296 | ||
297 | if (!has_svm()) { | |
298 | printk(KERN_ERR "svm_cpu_init: err EOPNOTSUPP on %d\n", me); | |
299 | return; | |
300 | } | |
301 | svm_data = per_cpu(svm_data, me); | |
302 | ||
303 | if (!svm_data) { | |
304 | printk(KERN_ERR "svm_cpu_init: svm_data is NULL on %d\n", | |
305 | me); | |
306 | return; | |
307 | } | |
308 | ||
309 | svm_data->asid_generation = 1; | |
310 | svm_data->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1; | |
311 | svm_data->next_asid = svm_data->max_asid + 1; | |
80b7706e | 312 | svm_features = cpuid_edx(SVM_CPUID_FUNC); |
6aa8b732 | 313 | |
d77c26fc | 314 | asm volatile ("sgdt %0" : "=m"(gdt_descr)); |
6aa8b732 AK |
315 | gdt = (struct desc_struct *)gdt_descr.address; |
316 | svm_data->tss_desc = (struct kvm_ldttss_desc *)(gdt + GDT_ENTRY_TSS); | |
317 | ||
318 | rdmsrl(MSR_EFER, efer); | |
319 | wrmsrl(MSR_EFER, efer | MSR_EFER_SVME_MASK); | |
320 | ||
321 | wrmsrl(MSR_VM_HSAVE_PA, | |
322 | page_to_pfn(svm_data->save_area) << PAGE_SHIFT); | |
323 | } | |
324 | ||
325 | static int svm_cpu_init(int cpu) | |
326 | { | |
327 | struct svm_cpu_data *svm_data; | |
328 | int r; | |
329 | ||
330 | svm_data = kzalloc(sizeof(struct svm_cpu_data), GFP_KERNEL); | |
331 | if (!svm_data) | |
332 | return -ENOMEM; | |
333 | svm_data->cpu = cpu; | |
334 | svm_data->save_area = alloc_page(GFP_KERNEL); | |
335 | r = -ENOMEM; | |
336 | if (!svm_data->save_area) | |
337 | goto err_1; | |
338 | ||
339 | per_cpu(svm_data, cpu) = svm_data; | |
340 | ||
341 | return 0; | |
342 | ||
343 | err_1: | |
344 | kfree(svm_data); | |
345 | return r; | |
346 | ||
347 | } | |
348 | ||
bfc733a7 RR |
349 | static void set_msr_interception(u32 *msrpm, unsigned msr, |
350 | int read, int write) | |
6aa8b732 AK |
351 | { |
352 | int i; | |
353 | ||
354 | for (i = 0; i < NUM_MSR_MAPS; i++) { | |
355 | if (msr >= msrpm_ranges[i] && | |
356 | msr < msrpm_ranges[i] + MSRS_IN_RANGE) { | |
357 | u32 msr_offset = (i * MSRS_IN_RANGE + msr - | |
358 | msrpm_ranges[i]) * 2; | |
359 | ||
360 | u32 *base = msrpm + (msr_offset / 32); | |
361 | u32 msr_shift = msr_offset % 32; | |
362 | u32 mask = ((write) ? 0 : 2) | ((read) ? 0 : 1); | |
363 | *base = (*base & ~(0x3 << msr_shift)) | | |
364 | (mask << msr_shift); | |
bfc733a7 | 365 | return; |
6aa8b732 AK |
366 | } |
367 | } | |
bfc733a7 | 368 | BUG(); |
6aa8b732 AK |
369 | } |
370 | ||
371 | static __init int svm_hardware_setup(void) | |
372 | { | |
373 | int cpu; | |
374 | struct page *iopm_pages; | |
375 | struct page *msrpm_pages; | |
c8681339 | 376 | void *iopm_va, *msrpm_va; |
6aa8b732 AK |
377 | int r; |
378 | ||
6aa8b732 AK |
379 | iopm_pages = alloc_pages(GFP_KERNEL, IOPM_ALLOC_ORDER); |
380 | ||
381 | if (!iopm_pages) | |
382 | return -ENOMEM; | |
c8681339 AL |
383 | |
384 | iopm_va = page_address(iopm_pages); | |
385 | memset(iopm_va, 0xff, PAGE_SIZE * (1 << IOPM_ALLOC_ORDER)); | |
386 | clear_bit(0x80, iopm_va); /* allow direct access to PC debug port */ | |
6aa8b732 AK |
387 | iopm_base = page_to_pfn(iopm_pages) << PAGE_SHIFT; |
388 | ||
389 | ||
390 | msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER); | |
391 | ||
392 | r = -ENOMEM; | |
393 | if (!msrpm_pages) | |
394 | goto err_1; | |
395 | ||
396 | msrpm_va = page_address(msrpm_pages); | |
397 | memset(msrpm_va, 0xff, PAGE_SIZE * (1 << MSRPM_ALLOC_ORDER)); | |
398 | msrpm_base = page_to_pfn(msrpm_pages) << PAGE_SHIFT; | |
399 | ||
05b3e0c2 | 400 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
401 | set_msr_interception(msrpm_va, MSR_GS_BASE, 1, 1); |
402 | set_msr_interception(msrpm_va, MSR_FS_BASE, 1, 1); | |
403 | set_msr_interception(msrpm_va, MSR_KERNEL_GS_BASE, 1, 1); | |
6aa8b732 AK |
404 | set_msr_interception(msrpm_va, MSR_LSTAR, 1, 1); |
405 | set_msr_interception(msrpm_va, MSR_CSTAR, 1, 1); | |
406 | set_msr_interception(msrpm_va, MSR_SYSCALL_MASK, 1, 1); | |
407 | #endif | |
0e859cac | 408 | set_msr_interception(msrpm_va, MSR_K6_STAR, 1, 1); |
6aa8b732 AK |
409 | set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_CS, 1, 1); |
410 | set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_ESP, 1, 1); | |
411 | set_msr_interception(msrpm_va, MSR_IA32_SYSENTER_EIP, 1, 1); | |
412 | ||
413 | for_each_online_cpu(cpu) { | |
414 | r = svm_cpu_init(cpu); | |
415 | if (r) | |
416 | goto err_2; | |
417 | } | |
418 | return 0; | |
419 | ||
420 | err_2: | |
421 | __free_pages(msrpm_pages, MSRPM_ALLOC_ORDER); | |
422 | msrpm_base = 0; | |
423 | err_1: | |
424 | __free_pages(iopm_pages, IOPM_ALLOC_ORDER); | |
425 | iopm_base = 0; | |
426 | return r; | |
427 | } | |
428 | ||
429 | static __exit void svm_hardware_unsetup(void) | |
430 | { | |
431 | __free_pages(pfn_to_page(msrpm_base >> PAGE_SHIFT), MSRPM_ALLOC_ORDER); | |
432 | __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER); | |
433 | iopm_base = msrpm_base = 0; | |
434 | } | |
435 | ||
436 | static void init_seg(struct vmcb_seg *seg) | |
437 | { | |
438 | seg->selector = 0; | |
439 | seg->attrib = SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK | | |
440 | SVM_SELECTOR_WRITE_MASK; /* Read/Write Data Segment */ | |
441 | seg->limit = 0xffff; | |
442 | seg->base = 0; | |
443 | } | |
444 | ||
445 | static void init_sys_seg(struct vmcb_seg *seg, uint32_t type) | |
446 | { | |
447 | seg->selector = 0; | |
448 | seg->attrib = SVM_SELECTOR_P_MASK | type; | |
449 | seg->limit = 0xffff; | |
450 | seg->base = 0; | |
451 | } | |
452 | ||
6aa8b732 AK |
453 | static void init_vmcb(struct vmcb *vmcb) |
454 | { | |
455 | struct vmcb_control_area *control = &vmcb->control; | |
456 | struct vmcb_save_area *save = &vmcb->save; | |
6aa8b732 AK |
457 | |
458 | control->intercept_cr_read = INTERCEPT_CR0_MASK | | |
459 | INTERCEPT_CR3_MASK | | |
460 | INTERCEPT_CR4_MASK; | |
461 | ||
462 | control->intercept_cr_write = INTERCEPT_CR0_MASK | | |
463 | INTERCEPT_CR3_MASK | | |
464 | INTERCEPT_CR4_MASK; | |
465 | ||
466 | control->intercept_dr_read = INTERCEPT_DR0_MASK | | |
467 | INTERCEPT_DR1_MASK | | |
468 | INTERCEPT_DR2_MASK | | |
469 | INTERCEPT_DR3_MASK; | |
470 | ||
471 | control->intercept_dr_write = INTERCEPT_DR0_MASK | | |
472 | INTERCEPT_DR1_MASK | | |
473 | INTERCEPT_DR2_MASK | | |
474 | INTERCEPT_DR3_MASK | | |
475 | INTERCEPT_DR5_MASK | | |
476 | INTERCEPT_DR7_MASK; | |
477 | ||
7aa81cc0 AL |
478 | control->intercept_exceptions = (1 << PF_VECTOR) | |
479 | (1 << UD_VECTOR); | |
6aa8b732 AK |
480 | |
481 | ||
482 | control->intercept = (1ULL << INTERCEPT_INTR) | | |
483 | (1ULL << INTERCEPT_NMI) | | |
0152527b | 484 | (1ULL << INTERCEPT_SMI) | |
6aa8b732 AK |
485 | /* |
486 | * selective cr0 intercept bug? | |
487 | * 0: 0f 22 d8 mov %eax,%cr3 | |
488 | * 3: 0f 20 c0 mov %cr0,%eax | |
489 | * 6: 0d 00 00 00 80 or $0x80000000,%eax | |
490 | * b: 0f 22 c0 mov %eax,%cr0 | |
491 | * set cr3 ->interception | |
492 | * get cr0 ->interception | |
493 | * set cr0 -> no interception | |
494 | */ | |
495 | /* (1ULL << INTERCEPT_SELECTIVE_CR0) | */ | |
496 | (1ULL << INTERCEPT_CPUID) | | |
cf5a94d1 | 497 | (1ULL << INTERCEPT_INVD) | |
6aa8b732 | 498 | (1ULL << INTERCEPT_HLT) | |
6aa8b732 AK |
499 | (1ULL << INTERCEPT_INVLPGA) | |
500 | (1ULL << INTERCEPT_IOIO_PROT) | | |
501 | (1ULL << INTERCEPT_MSR_PROT) | | |
502 | (1ULL << INTERCEPT_TASK_SWITCH) | | |
46fe4ddd | 503 | (1ULL << INTERCEPT_SHUTDOWN) | |
6aa8b732 AK |
504 | (1ULL << INTERCEPT_VMRUN) | |
505 | (1ULL << INTERCEPT_VMMCALL) | | |
506 | (1ULL << INTERCEPT_VMLOAD) | | |
507 | (1ULL << INTERCEPT_VMSAVE) | | |
508 | (1ULL << INTERCEPT_STGI) | | |
509 | (1ULL << INTERCEPT_CLGI) | | |
916ce236 | 510 | (1ULL << INTERCEPT_SKINIT) | |
cf5a94d1 | 511 | (1ULL << INTERCEPT_WBINVD) | |
916ce236 JR |
512 | (1ULL << INTERCEPT_MONITOR) | |
513 | (1ULL << INTERCEPT_MWAIT); | |
6aa8b732 AK |
514 | |
515 | control->iopm_base_pa = iopm_base; | |
516 | control->msrpm_base_pa = msrpm_base; | |
0cc5064d | 517 | control->tsc_offset = 0; |
6aa8b732 AK |
518 | control->int_ctl = V_INTR_MASKING_MASK; |
519 | ||
520 | init_seg(&save->es); | |
521 | init_seg(&save->ss); | |
522 | init_seg(&save->ds); | |
523 | init_seg(&save->fs); | |
524 | init_seg(&save->gs); | |
525 | ||
526 | save->cs.selector = 0xf000; | |
527 | /* Executable/Readable Code Segment */ | |
528 | save->cs.attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK | | |
529 | SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK; | |
530 | save->cs.limit = 0xffff; | |
d92899a0 AK |
531 | /* |
532 | * cs.base should really be 0xffff0000, but vmx can't handle that, so | |
533 | * be consistent with it. | |
534 | * | |
535 | * Replace when we have real mode working for vmx. | |
536 | */ | |
537 | save->cs.base = 0xf0000; | |
6aa8b732 AK |
538 | |
539 | save->gdtr.limit = 0xffff; | |
540 | save->idtr.limit = 0xffff; | |
541 | ||
542 | init_sys_seg(&save->ldtr, SEG_TYPE_LDT); | |
543 | init_sys_seg(&save->tr, SEG_TYPE_BUSY_TSS16); | |
544 | ||
545 | save->efer = MSR_EFER_SVME_MASK; | |
d77c26fc | 546 | save->dr6 = 0xffff0ff0; |
6aa8b732 AK |
547 | save->dr7 = 0x400; |
548 | save->rflags = 2; | |
549 | save->rip = 0x0000fff0; | |
550 | ||
551 | /* | |
552 | * cr0 val on cpu init should be 0x60000010, we enable cpu | |
553 | * cache by default. the orderly way is to enable cache in bios. | |
554 | */ | |
707d92fa | 555 | save->cr0 = 0x00000010 | X86_CR0_PG | X86_CR0_WP; |
66aee91a | 556 | save->cr4 = X86_CR4_PAE; |
6aa8b732 AK |
557 | /* rdx = ?? */ |
558 | } | |
559 | ||
e00c8cf2 | 560 | static int svm_vcpu_reset(struct kvm_vcpu *vcpu) |
04d2cc77 AK |
561 | { |
562 | struct vcpu_svm *svm = to_svm(vcpu); | |
563 | ||
564 | init_vmcb(svm->vmcb); | |
70433389 AK |
565 | |
566 | if (vcpu->vcpu_id != 0) { | |
567 | svm->vmcb->save.rip = 0; | |
568 | svm->vmcb->save.cs.base = svm->vcpu.sipi_vector << 12; | |
569 | svm->vmcb->save.cs.selector = svm->vcpu.sipi_vector << 8; | |
570 | } | |
e00c8cf2 AK |
571 | |
572 | return 0; | |
04d2cc77 AK |
573 | } |
574 | ||
fb3f0f51 | 575 | static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id) |
6aa8b732 | 576 | { |
a2fa3e9f | 577 | struct vcpu_svm *svm; |
6aa8b732 | 578 | struct page *page; |
fb3f0f51 | 579 | int err; |
6aa8b732 | 580 | |
c16f862d | 581 | svm = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); |
fb3f0f51 RR |
582 | if (!svm) { |
583 | err = -ENOMEM; | |
584 | goto out; | |
585 | } | |
586 | ||
587 | err = kvm_vcpu_init(&svm->vcpu, kvm, id); | |
588 | if (err) | |
589 | goto free_svm; | |
590 | ||
6aa8b732 | 591 | page = alloc_page(GFP_KERNEL); |
fb3f0f51 RR |
592 | if (!page) { |
593 | err = -ENOMEM; | |
594 | goto uninit; | |
595 | } | |
6aa8b732 | 596 | |
a2fa3e9f GH |
597 | svm->vmcb = page_address(page); |
598 | clear_page(svm->vmcb); | |
599 | svm->vmcb_pa = page_to_pfn(page) << PAGE_SHIFT; | |
600 | svm->asid_generation = 0; | |
601 | memset(svm->db_regs, 0, sizeof(svm->db_regs)); | |
602 | init_vmcb(svm->vmcb); | |
603 | ||
fb3f0f51 RR |
604 | fx_init(&svm->vcpu); |
605 | svm->vcpu.fpu_active = 1; | |
606 | svm->vcpu.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE; | |
607 | if (svm->vcpu.vcpu_id == 0) | |
608 | svm->vcpu.apic_base |= MSR_IA32_APICBASE_BSP; | |
6aa8b732 | 609 | |
fb3f0f51 | 610 | return &svm->vcpu; |
36241b8c | 611 | |
fb3f0f51 RR |
612 | uninit: |
613 | kvm_vcpu_uninit(&svm->vcpu); | |
614 | free_svm: | |
a4770347 | 615 | kmem_cache_free(kvm_vcpu_cache, svm); |
fb3f0f51 RR |
616 | out: |
617 | return ERR_PTR(err); | |
6aa8b732 AK |
618 | } |
619 | ||
620 | static void svm_free_vcpu(struct kvm_vcpu *vcpu) | |
621 | { | |
a2fa3e9f GH |
622 | struct vcpu_svm *svm = to_svm(vcpu); |
623 | ||
fb3f0f51 RR |
624 | __free_page(pfn_to_page(svm->vmcb_pa >> PAGE_SHIFT)); |
625 | kvm_vcpu_uninit(vcpu); | |
a4770347 | 626 | kmem_cache_free(kvm_vcpu_cache, svm); |
6aa8b732 AK |
627 | } |
628 | ||
15ad7146 | 629 | static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
6aa8b732 | 630 | { |
a2fa3e9f | 631 | struct vcpu_svm *svm = to_svm(vcpu); |
15ad7146 | 632 | int i; |
0cc5064d | 633 | |
0cc5064d AK |
634 | if (unlikely(cpu != vcpu->cpu)) { |
635 | u64 tsc_this, delta; | |
636 | ||
637 | /* | |
638 | * Make sure that the guest sees a monotonically | |
639 | * increasing TSC. | |
640 | */ | |
641 | rdtscll(tsc_this); | |
642 | delta = vcpu->host_tsc - tsc_this; | |
a2fa3e9f | 643 | svm->vmcb->control.tsc_offset += delta; |
0cc5064d | 644 | vcpu->cpu = cpu; |
a3d7f85f | 645 | kvm_migrate_apic_timer(vcpu); |
0cc5064d | 646 | } |
94dfbdb3 AL |
647 | |
648 | for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++) | |
a2fa3e9f | 649 | rdmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]); |
6aa8b732 AK |
650 | } |
651 | ||
652 | static void svm_vcpu_put(struct kvm_vcpu *vcpu) | |
653 | { | |
a2fa3e9f | 654 | struct vcpu_svm *svm = to_svm(vcpu); |
94dfbdb3 AL |
655 | int i; |
656 | ||
657 | for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++) | |
a2fa3e9f | 658 | wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]); |
94dfbdb3 | 659 | |
0cc5064d | 660 | rdtscll(vcpu->host_tsc); |
8d379a7c | 661 | kvm_put_guest_fpu(vcpu); |
6aa8b732 AK |
662 | } |
663 | ||
774c47f1 AK |
664 | static void svm_vcpu_decache(struct kvm_vcpu *vcpu) |
665 | { | |
666 | } | |
667 | ||
6aa8b732 AK |
668 | static void svm_cache_regs(struct kvm_vcpu *vcpu) |
669 | { | |
a2fa3e9f GH |
670 | struct vcpu_svm *svm = to_svm(vcpu); |
671 | ||
672 | vcpu->regs[VCPU_REGS_RAX] = svm->vmcb->save.rax; | |
673 | vcpu->regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp; | |
674 | vcpu->rip = svm->vmcb->save.rip; | |
6aa8b732 AK |
675 | } |
676 | ||
677 | static void svm_decache_regs(struct kvm_vcpu *vcpu) | |
678 | { | |
a2fa3e9f GH |
679 | struct vcpu_svm *svm = to_svm(vcpu); |
680 | svm->vmcb->save.rax = vcpu->regs[VCPU_REGS_RAX]; | |
681 | svm->vmcb->save.rsp = vcpu->regs[VCPU_REGS_RSP]; | |
682 | svm->vmcb->save.rip = vcpu->rip; | |
6aa8b732 AK |
683 | } |
684 | ||
685 | static unsigned long svm_get_rflags(struct kvm_vcpu *vcpu) | |
686 | { | |
a2fa3e9f | 687 | return to_svm(vcpu)->vmcb->save.rflags; |
6aa8b732 AK |
688 | } |
689 | ||
690 | static void svm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags) | |
691 | { | |
a2fa3e9f | 692 | to_svm(vcpu)->vmcb->save.rflags = rflags; |
6aa8b732 AK |
693 | } |
694 | ||
695 | static struct vmcb_seg *svm_seg(struct kvm_vcpu *vcpu, int seg) | |
696 | { | |
a2fa3e9f | 697 | struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save; |
6aa8b732 AK |
698 | |
699 | switch (seg) { | |
700 | case VCPU_SREG_CS: return &save->cs; | |
701 | case VCPU_SREG_DS: return &save->ds; | |
702 | case VCPU_SREG_ES: return &save->es; | |
703 | case VCPU_SREG_FS: return &save->fs; | |
704 | case VCPU_SREG_GS: return &save->gs; | |
705 | case VCPU_SREG_SS: return &save->ss; | |
706 | case VCPU_SREG_TR: return &save->tr; | |
707 | case VCPU_SREG_LDTR: return &save->ldtr; | |
708 | } | |
709 | BUG(); | |
8b6d44c7 | 710 | return NULL; |
6aa8b732 AK |
711 | } |
712 | ||
713 | static u64 svm_get_segment_base(struct kvm_vcpu *vcpu, int seg) | |
714 | { | |
715 | struct vmcb_seg *s = svm_seg(vcpu, seg); | |
716 | ||
717 | return s->base; | |
718 | } | |
719 | ||
720 | static void svm_get_segment(struct kvm_vcpu *vcpu, | |
721 | struct kvm_segment *var, int seg) | |
722 | { | |
723 | struct vmcb_seg *s = svm_seg(vcpu, seg); | |
724 | ||
725 | var->base = s->base; | |
726 | var->limit = s->limit; | |
727 | var->selector = s->selector; | |
728 | var->type = s->attrib & SVM_SELECTOR_TYPE_MASK; | |
729 | var->s = (s->attrib >> SVM_SELECTOR_S_SHIFT) & 1; | |
730 | var->dpl = (s->attrib >> SVM_SELECTOR_DPL_SHIFT) & 3; | |
731 | var->present = (s->attrib >> SVM_SELECTOR_P_SHIFT) & 1; | |
732 | var->avl = (s->attrib >> SVM_SELECTOR_AVL_SHIFT) & 1; | |
733 | var->l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1; | |
734 | var->db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1; | |
735 | var->g = (s->attrib >> SVM_SELECTOR_G_SHIFT) & 1; | |
736 | var->unusable = !var->present; | |
737 | } | |
738 | ||
6aa8b732 AK |
739 | static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) |
740 | { | |
a2fa3e9f GH |
741 | struct vcpu_svm *svm = to_svm(vcpu); |
742 | ||
743 | dt->limit = svm->vmcb->save.idtr.limit; | |
744 | dt->base = svm->vmcb->save.idtr.base; | |
6aa8b732 AK |
745 | } |
746 | ||
747 | static void svm_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) | |
748 | { | |
a2fa3e9f GH |
749 | struct vcpu_svm *svm = to_svm(vcpu); |
750 | ||
751 | svm->vmcb->save.idtr.limit = dt->limit; | |
752 | svm->vmcb->save.idtr.base = dt->base ; | |
6aa8b732 AK |
753 | } |
754 | ||
755 | static void svm_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) | |
756 | { | |
a2fa3e9f GH |
757 | struct vcpu_svm *svm = to_svm(vcpu); |
758 | ||
759 | dt->limit = svm->vmcb->save.gdtr.limit; | |
760 | dt->base = svm->vmcb->save.gdtr.base; | |
6aa8b732 AK |
761 | } |
762 | ||
763 | static void svm_set_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) | |
764 | { | |
a2fa3e9f GH |
765 | struct vcpu_svm *svm = to_svm(vcpu); |
766 | ||
767 | svm->vmcb->save.gdtr.limit = dt->limit; | |
768 | svm->vmcb->save.gdtr.base = dt->base ; | |
6aa8b732 AK |
769 | } |
770 | ||
25c4c276 | 771 | static void svm_decache_cr4_guest_bits(struct kvm_vcpu *vcpu) |
399badf3 AK |
772 | { |
773 | } | |
774 | ||
6aa8b732 AK |
775 | static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) |
776 | { | |
a2fa3e9f GH |
777 | struct vcpu_svm *svm = to_svm(vcpu); |
778 | ||
05b3e0c2 | 779 | #ifdef CONFIG_X86_64 |
6aa8b732 | 780 | if (vcpu->shadow_efer & KVM_EFER_LME) { |
707d92fa | 781 | if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) { |
6aa8b732 | 782 | vcpu->shadow_efer |= KVM_EFER_LMA; |
a2fa3e9f | 783 | svm->vmcb->save.efer |= KVM_EFER_LMA | KVM_EFER_LME; |
6aa8b732 AK |
784 | } |
785 | ||
d77c26fc | 786 | if (is_paging(vcpu) && !(cr0 & X86_CR0_PG)) { |
6aa8b732 | 787 | vcpu->shadow_efer &= ~KVM_EFER_LMA; |
a2fa3e9f | 788 | svm->vmcb->save.efer &= ~(KVM_EFER_LMA | KVM_EFER_LME); |
6aa8b732 AK |
789 | } |
790 | } | |
791 | #endif | |
707d92fa | 792 | if ((vcpu->cr0 & X86_CR0_TS) && !(cr0 & X86_CR0_TS)) { |
a2fa3e9f | 793 | svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR); |
7807fa6c AL |
794 | vcpu->fpu_active = 1; |
795 | } | |
796 | ||
6aa8b732 | 797 | vcpu->cr0 = cr0; |
707d92fa RR |
798 | cr0 |= X86_CR0_PG | X86_CR0_WP; |
799 | cr0 &= ~(X86_CR0_CD | X86_CR0_NW); | |
a2fa3e9f | 800 | svm->vmcb->save.cr0 = cr0; |
6aa8b732 AK |
801 | } |
802 | ||
803 | static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4) | |
804 | { | |
805 | vcpu->cr4 = cr4; | |
a2fa3e9f | 806 | to_svm(vcpu)->vmcb->save.cr4 = cr4 | X86_CR4_PAE; |
6aa8b732 AK |
807 | } |
808 | ||
809 | static void svm_set_segment(struct kvm_vcpu *vcpu, | |
810 | struct kvm_segment *var, int seg) | |
811 | { | |
a2fa3e9f | 812 | struct vcpu_svm *svm = to_svm(vcpu); |
6aa8b732 AK |
813 | struct vmcb_seg *s = svm_seg(vcpu, seg); |
814 | ||
815 | s->base = var->base; | |
816 | s->limit = var->limit; | |
817 | s->selector = var->selector; | |
818 | if (var->unusable) | |
819 | s->attrib = 0; | |
820 | else { | |
821 | s->attrib = (var->type & SVM_SELECTOR_TYPE_MASK); | |
822 | s->attrib |= (var->s & 1) << SVM_SELECTOR_S_SHIFT; | |
823 | s->attrib |= (var->dpl & 3) << SVM_SELECTOR_DPL_SHIFT; | |
824 | s->attrib |= (var->present & 1) << SVM_SELECTOR_P_SHIFT; | |
825 | s->attrib |= (var->avl & 1) << SVM_SELECTOR_AVL_SHIFT; | |
826 | s->attrib |= (var->l & 1) << SVM_SELECTOR_L_SHIFT; | |
827 | s->attrib |= (var->db & 1) << SVM_SELECTOR_DB_SHIFT; | |
828 | s->attrib |= (var->g & 1) << SVM_SELECTOR_G_SHIFT; | |
829 | } | |
830 | if (seg == VCPU_SREG_CS) | |
a2fa3e9f GH |
831 | svm->vmcb->save.cpl |
832 | = (svm->vmcb->save.cs.attrib | |
6aa8b732 AK |
833 | >> SVM_SELECTOR_DPL_SHIFT) & 3; |
834 | ||
835 | } | |
836 | ||
837 | /* FIXME: | |
838 | ||
a2fa3e9f GH |
839 | svm(vcpu)->vmcb->control.int_ctl &= ~V_TPR_MASK; |
840 | svm(vcpu)->vmcb->control.int_ctl |= (sregs->cr8 & V_TPR_MASK); | |
6aa8b732 AK |
841 | |
842 | */ | |
843 | ||
844 | static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg) | |
845 | { | |
846 | return -EOPNOTSUPP; | |
847 | } | |
848 | ||
2a8067f1 ED |
849 | static int svm_get_irq(struct kvm_vcpu *vcpu) |
850 | { | |
851 | struct vcpu_svm *svm = to_svm(vcpu); | |
852 | u32 exit_int_info = svm->vmcb->control.exit_int_info; | |
853 | ||
854 | if (is_external_interrupt(exit_int_info)) | |
855 | return exit_int_info & SVM_EVTINJ_VEC_MASK; | |
856 | return -1; | |
857 | } | |
858 | ||
6aa8b732 AK |
859 | static void load_host_msrs(struct kvm_vcpu *vcpu) |
860 | { | |
94dfbdb3 | 861 | #ifdef CONFIG_X86_64 |
a2fa3e9f | 862 | wrmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base); |
94dfbdb3 | 863 | #endif |
6aa8b732 AK |
864 | } |
865 | ||
866 | static void save_host_msrs(struct kvm_vcpu *vcpu) | |
867 | { | |
94dfbdb3 | 868 | #ifdef CONFIG_X86_64 |
a2fa3e9f | 869 | rdmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base); |
94dfbdb3 | 870 | #endif |
6aa8b732 AK |
871 | } |
872 | ||
e756fc62 | 873 | static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *svm_data) |
6aa8b732 AK |
874 | { |
875 | if (svm_data->next_asid > svm_data->max_asid) { | |
876 | ++svm_data->asid_generation; | |
877 | svm_data->next_asid = 1; | |
a2fa3e9f | 878 | svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID; |
6aa8b732 AK |
879 | } |
880 | ||
e756fc62 | 881 | svm->vcpu.cpu = svm_data->cpu; |
a2fa3e9f GH |
882 | svm->asid_generation = svm_data->asid_generation; |
883 | svm->vmcb->control.asid = svm_data->next_asid++; | |
6aa8b732 AK |
884 | } |
885 | ||
6aa8b732 AK |
886 | static unsigned long svm_get_dr(struct kvm_vcpu *vcpu, int dr) |
887 | { | |
a2fa3e9f | 888 | return to_svm(vcpu)->db_regs[dr]; |
6aa8b732 AK |
889 | } |
890 | ||
891 | static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
892 | int *exception) | |
893 | { | |
a2fa3e9f GH |
894 | struct vcpu_svm *svm = to_svm(vcpu); |
895 | ||
6aa8b732 AK |
896 | *exception = 0; |
897 | ||
a2fa3e9f GH |
898 | if (svm->vmcb->save.dr7 & DR7_GD_MASK) { |
899 | svm->vmcb->save.dr7 &= ~DR7_GD_MASK; | |
900 | svm->vmcb->save.dr6 |= DR6_BD_MASK; | |
6aa8b732 AK |
901 | *exception = DB_VECTOR; |
902 | return; | |
903 | } | |
904 | ||
905 | switch (dr) { | |
906 | case 0 ... 3: | |
a2fa3e9f | 907 | svm->db_regs[dr] = value; |
6aa8b732 AK |
908 | return; |
909 | case 4 ... 5: | |
66aee91a | 910 | if (vcpu->cr4 & X86_CR4_DE) { |
6aa8b732 AK |
911 | *exception = UD_VECTOR; |
912 | return; | |
913 | } | |
914 | case 7: { | |
915 | if (value & ~((1ULL << 32) - 1)) { | |
916 | *exception = GP_VECTOR; | |
917 | return; | |
918 | } | |
a2fa3e9f | 919 | svm->vmcb->save.dr7 = value; |
6aa8b732 AK |
920 | return; |
921 | } | |
922 | default: | |
923 | printk(KERN_DEBUG "%s: unexpected dr %u\n", | |
924 | __FUNCTION__, dr); | |
925 | *exception = UD_VECTOR; | |
926 | return; | |
927 | } | |
928 | } | |
929 | ||
e756fc62 | 930 | static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 | 931 | { |
a2fa3e9f | 932 | u32 exit_int_info = svm->vmcb->control.exit_int_info; |
e756fc62 | 933 | struct kvm *kvm = svm->vcpu.kvm; |
6aa8b732 AK |
934 | u64 fault_address; |
935 | u32 error_code; | |
936 | enum emulation_result er; | |
e2dec939 | 937 | int r; |
6aa8b732 | 938 | |
85f455f7 ED |
939 | if (!irqchip_in_kernel(kvm) && |
940 | is_external_interrupt(exit_int_info)) | |
e756fc62 | 941 | push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK); |
6aa8b732 | 942 | |
e756fc62 | 943 | mutex_lock(&kvm->lock); |
6aa8b732 | 944 | |
a2fa3e9f GH |
945 | fault_address = svm->vmcb->control.exit_info_2; |
946 | error_code = svm->vmcb->control.exit_info_1; | |
e756fc62 | 947 | r = kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code); |
e2dec939 | 948 | if (r < 0) { |
e756fc62 | 949 | mutex_unlock(&kvm->lock); |
e2dec939 AK |
950 | return r; |
951 | } | |
952 | if (!r) { | |
e756fc62 | 953 | mutex_unlock(&kvm->lock); |
6aa8b732 AK |
954 | return 1; |
955 | } | |
e756fc62 | 956 | er = emulate_instruction(&svm->vcpu, kvm_run, fault_address, |
3427318f | 957 | error_code, 0); |
e756fc62 | 958 | mutex_unlock(&kvm->lock); |
6aa8b732 AK |
959 | |
960 | switch (er) { | |
961 | case EMULATE_DONE: | |
962 | return 1; | |
963 | case EMULATE_DO_MMIO: | |
e756fc62 | 964 | ++svm->vcpu.stat.mmio_exits; |
6aa8b732 AK |
965 | return 0; |
966 | case EMULATE_FAIL: | |
054b1369 | 967 | kvm_report_emulation_failure(&svm->vcpu, "pagetable"); |
6aa8b732 AK |
968 | break; |
969 | default: | |
970 | BUG(); | |
971 | } | |
972 | ||
973 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
974 | return 0; | |
975 | } | |
976 | ||
7aa81cc0 AL |
977 | static int ud_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
978 | { | |
979 | int er; | |
980 | ||
3427318f | 981 | er = emulate_instruction(&svm->vcpu, kvm_run, 0, 0, 0); |
7aa81cc0 AL |
982 | if (er != EMULATE_DONE) |
983 | inject_ud(&svm->vcpu); | |
984 | ||
985 | return 1; | |
986 | } | |
987 | ||
e756fc62 | 988 | static int nm_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
7807fa6c | 989 | { |
a2fa3e9f | 990 | svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR); |
e756fc62 | 991 | if (!(svm->vcpu.cr0 & X86_CR0_TS)) |
a2fa3e9f | 992 | svm->vmcb->save.cr0 &= ~X86_CR0_TS; |
e756fc62 | 993 | svm->vcpu.fpu_active = 1; |
a2fa3e9f GH |
994 | |
995 | return 1; | |
7807fa6c AL |
996 | } |
997 | ||
e756fc62 | 998 | static int shutdown_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
46fe4ddd JR |
999 | { |
1000 | /* | |
1001 | * VMCB is undefined after a SHUTDOWN intercept | |
1002 | * so reinitialize it. | |
1003 | */ | |
a2fa3e9f GH |
1004 | clear_page(svm->vmcb); |
1005 | init_vmcb(svm->vmcb); | |
46fe4ddd JR |
1006 | |
1007 | kvm_run->exit_reason = KVM_EXIT_SHUTDOWN; | |
1008 | return 0; | |
1009 | } | |
1010 | ||
e756fc62 | 1011 | static int io_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 | 1012 | { |
d77c26fc | 1013 | u32 io_info = svm->vmcb->control.exit_info_1; /* address size bug? */ |
039576c0 AK |
1014 | int size, down, in, string, rep; |
1015 | unsigned port; | |
6aa8b732 | 1016 | |
e756fc62 | 1017 | ++svm->vcpu.stat.io_exits; |
6aa8b732 | 1018 | |
a2fa3e9f | 1019 | svm->next_rip = svm->vmcb->control.exit_info_2; |
6aa8b732 | 1020 | |
e70669ab LV |
1021 | string = (io_info & SVM_IOIO_STR_MASK) != 0; |
1022 | ||
1023 | if (string) { | |
3427318f LV |
1024 | if (emulate_instruction(&svm->vcpu, |
1025 | kvm_run, 0, 0, 0) == EMULATE_DO_MMIO) | |
e70669ab LV |
1026 | return 0; |
1027 | return 1; | |
1028 | } | |
1029 | ||
039576c0 AK |
1030 | in = (io_info & SVM_IOIO_TYPE_MASK) != 0; |
1031 | port = io_info >> 16; | |
1032 | size = (io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT; | |
039576c0 | 1033 | rep = (io_info & SVM_IOIO_REP_MASK) != 0; |
a2fa3e9f | 1034 | down = (svm->vmcb->save.rflags & X86_EFLAGS_DF) != 0; |
6aa8b732 | 1035 | |
3090dd73 | 1036 | return kvm_emulate_pio(&svm->vcpu, kvm_run, in, size, port); |
6aa8b732 AK |
1037 | } |
1038 | ||
e756fc62 | 1039 | static int nop_on_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 AK |
1040 | { |
1041 | return 1; | |
1042 | } | |
1043 | ||
e756fc62 | 1044 | static int halt_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 | 1045 | { |
a2fa3e9f | 1046 | svm->next_rip = svm->vmcb->save.rip + 1; |
e756fc62 RR |
1047 | skip_emulated_instruction(&svm->vcpu); |
1048 | return kvm_emulate_halt(&svm->vcpu); | |
6aa8b732 AK |
1049 | } |
1050 | ||
e756fc62 | 1051 | static int vmmcall_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
02e235bc | 1052 | { |
a2fa3e9f | 1053 | svm->next_rip = svm->vmcb->save.rip + 3; |
e756fc62 | 1054 | skip_emulated_instruction(&svm->vcpu); |
7aa81cc0 AL |
1055 | kvm_emulate_hypercall(&svm->vcpu); |
1056 | return 1; | |
02e235bc AK |
1057 | } |
1058 | ||
e756fc62 RR |
1059 | static int invalid_op_interception(struct vcpu_svm *svm, |
1060 | struct kvm_run *kvm_run) | |
6aa8b732 | 1061 | { |
e756fc62 | 1062 | inject_ud(&svm->vcpu); |
6aa8b732 AK |
1063 | return 1; |
1064 | } | |
1065 | ||
e756fc62 RR |
1066 | static int task_switch_interception(struct vcpu_svm *svm, |
1067 | struct kvm_run *kvm_run) | |
6aa8b732 | 1068 | { |
f0242478 | 1069 | pr_unimpl(&svm->vcpu, "%s: task switch is unsupported\n", __FUNCTION__); |
6aa8b732 AK |
1070 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; |
1071 | return 0; | |
1072 | } | |
1073 | ||
e756fc62 | 1074 | static int cpuid_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 | 1075 | { |
a2fa3e9f | 1076 | svm->next_rip = svm->vmcb->save.rip + 2; |
e756fc62 | 1077 | kvm_emulate_cpuid(&svm->vcpu); |
06465c5a | 1078 | return 1; |
6aa8b732 AK |
1079 | } |
1080 | ||
e756fc62 RR |
1081 | static int emulate_on_interception(struct vcpu_svm *svm, |
1082 | struct kvm_run *kvm_run) | |
6aa8b732 | 1083 | { |
3427318f | 1084 | if (emulate_instruction(&svm->vcpu, NULL, 0, 0, 0) != EMULATE_DONE) |
f0242478 | 1085 | pr_unimpl(&svm->vcpu, "%s: failed\n", __FUNCTION__); |
6aa8b732 AK |
1086 | return 1; |
1087 | } | |
1088 | ||
1089 | static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data) | |
1090 | { | |
a2fa3e9f GH |
1091 | struct vcpu_svm *svm = to_svm(vcpu); |
1092 | ||
6aa8b732 | 1093 | switch (ecx) { |
6aa8b732 AK |
1094 | case MSR_IA32_TIME_STAMP_COUNTER: { |
1095 | u64 tsc; | |
1096 | ||
1097 | rdtscll(tsc); | |
a2fa3e9f | 1098 | *data = svm->vmcb->control.tsc_offset + tsc; |
6aa8b732 AK |
1099 | break; |
1100 | } | |
0e859cac | 1101 | case MSR_K6_STAR: |
a2fa3e9f | 1102 | *data = svm->vmcb->save.star; |
6aa8b732 | 1103 | break; |
0e859cac | 1104 | #ifdef CONFIG_X86_64 |
6aa8b732 | 1105 | case MSR_LSTAR: |
a2fa3e9f | 1106 | *data = svm->vmcb->save.lstar; |
6aa8b732 AK |
1107 | break; |
1108 | case MSR_CSTAR: | |
a2fa3e9f | 1109 | *data = svm->vmcb->save.cstar; |
6aa8b732 AK |
1110 | break; |
1111 | case MSR_KERNEL_GS_BASE: | |
a2fa3e9f | 1112 | *data = svm->vmcb->save.kernel_gs_base; |
6aa8b732 AK |
1113 | break; |
1114 | case MSR_SYSCALL_MASK: | |
a2fa3e9f | 1115 | *data = svm->vmcb->save.sfmask; |
6aa8b732 AK |
1116 | break; |
1117 | #endif | |
1118 | case MSR_IA32_SYSENTER_CS: | |
a2fa3e9f | 1119 | *data = svm->vmcb->save.sysenter_cs; |
6aa8b732 AK |
1120 | break; |
1121 | case MSR_IA32_SYSENTER_EIP: | |
a2fa3e9f | 1122 | *data = svm->vmcb->save.sysenter_eip; |
6aa8b732 AK |
1123 | break; |
1124 | case MSR_IA32_SYSENTER_ESP: | |
a2fa3e9f | 1125 | *data = svm->vmcb->save.sysenter_esp; |
6aa8b732 AK |
1126 | break; |
1127 | default: | |
3bab1f5d | 1128 | return kvm_get_msr_common(vcpu, ecx, data); |
6aa8b732 AK |
1129 | } |
1130 | return 0; | |
1131 | } | |
1132 | ||
e756fc62 | 1133 | static int rdmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 | 1134 | { |
e756fc62 | 1135 | u32 ecx = svm->vcpu.regs[VCPU_REGS_RCX]; |
6aa8b732 AK |
1136 | u64 data; |
1137 | ||
e756fc62 RR |
1138 | if (svm_get_msr(&svm->vcpu, ecx, &data)) |
1139 | svm_inject_gp(&svm->vcpu, 0); | |
6aa8b732 | 1140 | else { |
a2fa3e9f | 1141 | svm->vmcb->save.rax = data & 0xffffffff; |
e756fc62 | 1142 | svm->vcpu.regs[VCPU_REGS_RDX] = data >> 32; |
a2fa3e9f | 1143 | svm->next_rip = svm->vmcb->save.rip + 2; |
e756fc62 | 1144 | skip_emulated_instruction(&svm->vcpu); |
6aa8b732 AK |
1145 | } |
1146 | return 1; | |
1147 | } | |
1148 | ||
1149 | static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data) | |
1150 | { | |
a2fa3e9f GH |
1151 | struct vcpu_svm *svm = to_svm(vcpu); |
1152 | ||
6aa8b732 | 1153 | switch (ecx) { |
6aa8b732 AK |
1154 | case MSR_IA32_TIME_STAMP_COUNTER: { |
1155 | u64 tsc; | |
1156 | ||
1157 | rdtscll(tsc); | |
a2fa3e9f | 1158 | svm->vmcb->control.tsc_offset = data - tsc; |
6aa8b732 AK |
1159 | break; |
1160 | } | |
0e859cac | 1161 | case MSR_K6_STAR: |
a2fa3e9f | 1162 | svm->vmcb->save.star = data; |
6aa8b732 | 1163 | break; |
49b14f24 | 1164 | #ifdef CONFIG_X86_64 |
6aa8b732 | 1165 | case MSR_LSTAR: |
a2fa3e9f | 1166 | svm->vmcb->save.lstar = data; |
6aa8b732 AK |
1167 | break; |
1168 | case MSR_CSTAR: | |
a2fa3e9f | 1169 | svm->vmcb->save.cstar = data; |
6aa8b732 AK |
1170 | break; |
1171 | case MSR_KERNEL_GS_BASE: | |
a2fa3e9f | 1172 | svm->vmcb->save.kernel_gs_base = data; |
6aa8b732 AK |
1173 | break; |
1174 | case MSR_SYSCALL_MASK: | |
a2fa3e9f | 1175 | svm->vmcb->save.sfmask = data; |
6aa8b732 AK |
1176 | break; |
1177 | #endif | |
1178 | case MSR_IA32_SYSENTER_CS: | |
a2fa3e9f | 1179 | svm->vmcb->save.sysenter_cs = data; |
6aa8b732 AK |
1180 | break; |
1181 | case MSR_IA32_SYSENTER_EIP: | |
a2fa3e9f | 1182 | svm->vmcb->save.sysenter_eip = data; |
6aa8b732 AK |
1183 | break; |
1184 | case MSR_IA32_SYSENTER_ESP: | |
a2fa3e9f | 1185 | svm->vmcb->save.sysenter_esp = data; |
6aa8b732 AK |
1186 | break; |
1187 | default: | |
3bab1f5d | 1188 | return kvm_set_msr_common(vcpu, ecx, data); |
6aa8b732 AK |
1189 | } |
1190 | return 0; | |
1191 | } | |
1192 | ||
e756fc62 | 1193 | static int wrmsr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 | 1194 | { |
e756fc62 | 1195 | u32 ecx = svm->vcpu.regs[VCPU_REGS_RCX]; |
a2fa3e9f | 1196 | u64 data = (svm->vmcb->save.rax & -1u) |
e756fc62 | 1197 | | ((u64)(svm->vcpu.regs[VCPU_REGS_RDX] & -1u) << 32); |
a2fa3e9f | 1198 | svm->next_rip = svm->vmcb->save.rip + 2; |
e756fc62 RR |
1199 | if (svm_set_msr(&svm->vcpu, ecx, data)) |
1200 | svm_inject_gp(&svm->vcpu, 0); | |
6aa8b732 | 1201 | else |
e756fc62 | 1202 | skip_emulated_instruction(&svm->vcpu); |
6aa8b732 AK |
1203 | return 1; |
1204 | } | |
1205 | ||
e756fc62 | 1206 | static int msr_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) |
6aa8b732 | 1207 | { |
e756fc62 RR |
1208 | if (svm->vmcb->control.exit_info_1) |
1209 | return wrmsr_interception(svm, kvm_run); | |
6aa8b732 | 1210 | else |
e756fc62 | 1211 | return rdmsr_interception(svm, kvm_run); |
6aa8b732 AK |
1212 | } |
1213 | ||
e756fc62 | 1214 | static int interrupt_window_interception(struct vcpu_svm *svm, |
c1150d8c DL |
1215 | struct kvm_run *kvm_run) |
1216 | { | |
85f455f7 ED |
1217 | svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_VINTR); |
1218 | svm->vmcb->control.int_ctl &= ~V_IRQ_MASK; | |
c1150d8c DL |
1219 | /* |
1220 | * If the user space waits to inject interrupts, exit as soon as | |
1221 | * possible | |
1222 | */ | |
1223 | if (kvm_run->request_interrupt_window && | |
e756fc62 RR |
1224 | !svm->vcpu.irq_summary) { |
1225 | ++svm->vcpu.stat.irq_window_exits; | |
c1150d8c DL |
1226 | kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN; |
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | return 1; | |
1231 | } | |
1232 | ||
e756fc62 | 1233 | static int (*svm_exit_handlers[])(struct vcpu_svm *svm, |
6aa8b732 AK |
1234 | struct kvm_run *kvm_run) = { |
1235 | [SVM_EXIT_READ_CR0] = emulate_on_interception, | |
1236 | [SVM_EXIT_READ_CR3] = emulate_on_interception, | |
1237 | [SVM_EXIT_READ_CR4] = emulate_on_interception, | |
1238 | /* for now: */ | |
1239 | [SVM_EXIT_WRITE_CR0] = emulate_on_interception, | |
1240 | [SVM_EXIT_WRITE_CR3] = emulate_on_interception, | |
1241 | [SVM_EXIT_WRITE_CR4] = emulate_on_interception, | |
1242 | [SVM_EXIT_READ_DR0] = emulate_on_interception, | |
1243 | [SVM_EXIT_READ_DR1] = emulate_on_interception, | |
1244 | [SVM_EXIT_READ_DR2] = emulate_on_interception, | |
1245 | [SVM_EXIT_READ_DR3] = emulate_on_interception, | |
1246 | [SVM_EXIT_WRITE_DR0] = emulate_on_interception, | |
1247 | [SVM_EXIT_WRITE_DR1] = emulate_on_interception, | |
1248 | [SVM_EXIT_WRITE_DR2] = emulate_on_interception, | |
1249 | [SVM_EXIT_WRITE_DR3] = emulate_on_interception, | |
1250 | [SVM_EXIT_WRITE_DR5] = emulate_on_interception, | |
1251 | [SVM_EXIT_WRITE_DR7] = emulate_on_interception, | |
7aa81cc0 | 1252 | [SVM_EXIT_EXCP_BASE + UD_VECTOR] = ud_interception, |
6aa8b732 | 1253 | [SVM_EXIT_EXCP_BASE + PF_VECTOR] = pf_interception, |
7807fa6c | 1254 | [SVM_EXIT_EXCP_BASE + NM_VECTOR] = nm_interception, |
6aa8b732 AK |
1255 | [SVM_EXIT_INTR] = nop_on_interception, |
1256 | [SVM_EXIT_NMI] = nop_on_interception, | |
1257 | [SVM_EXIT_SMI] = nop_on_interception, | |
1258 | [SVM_EXIT_INIT] = nop_on_interception, | |
c1150d8c | 1259 | [SVM_EXIT_VINTR] = interrupt_window_interception, |
6aa8b732 AK |
1260 | /* [SVM_EXIT_CR0_SEL_WRITE] = emulate_on_interception, */ |
1261 | [SVM_EXIT_CPUID] = cpuid_interception, | |
cf5a94d1 | 1262 | [SVM_EXIT_INVD] = emulate_on_interception, |
6aa8b732 AK |
1263 | [SVM_EXIT_HLT] = halt_interception, |
1264 | [SVM_EXIT_INVLPG] = emulate_on_interception, | |
1265 | [SVM_EXIT_INVLPGA] = invalid_op_interception, | |
1266 | [SVM_EXIT_IOIO] = io_interception, | |
1267 | [SVM_EXIT_MSR] = msr_interception, | |
1268 | [SVM_EXIT_TASK_SWITCH] = task_switch_interception, | |
46fe4ddd | 1269 | [SVM_EXIT_SHUTDOWN] = shutdown_interception, |
6aa8b732 | 1270 | [SVM_EXIT_VMRUN] = invalid_op_interception, |
02e235bc | 1271 | [SVM_EXIT_VMMCALL] = vmmcall_interception, |
6aa8b732 AK |
1272 | [SVM_EXIT_VMLOAD] = invalid_op_interception, |
1273 | [SVM_EXIT_VMSAVE] = invalid_op_interception, | |
1274 | [SVM_EXIT_STGI] = invalid_op_interception, | |
1275 | [SVM_EXIT_CLGI] = invalid_op_interception, | |
1276 | [SVM_EXIT_SKINIT] = invalid_op_interception, | |
cf5a94d1 | 1277 | [SVM_EXIT_WBINVD] = emulate_on_interception, |
916ce236 JR |
1278 | [SVM_EXIT_MONITOR] = invalid_op_interception, |
1279 | [SVM_EXIT_MWAIT] = invalid_op_interception, | |
6aa8b732 AK |
1280 | }; |
1281 | ||
1282 | ||
04d2cc77 | 1283 | static int handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) |
6aa8b732 | 1284 | { |
04d2cc77 | 1285 | struct vcpu_svm *svm = to_svm(vcpu); |
a2fa3e9f | 1286 | u32 exit_code = svm->vmcb->control.exit_code; |
6aa8b732 | 1287 | |
04d2cc77 AK |
1288 | kvm_reput_irq(svm); |
1289 | ||
1290 | if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) { | |
1291 | kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY; | |
1292 | kvm_run->fail_entry.hardware_entry_failure_reason | |
1293 | = svm->vmcb->control.exit_code; | |
1294 | return 0; | |
1295 | } | |
1296 | ||
a2fa3e9f | 1297 | if (is_external_interrupt(svm->vmcb->control.exit_int_info) && |
6aa8b732 AK |
1298 | exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR) |
1299 | printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x " | |
1300 | "exit_code 0x%x\n", | |
a2fa3e9f | 1301 | __FUNCTION__, svm->vmcb->control.exit_int_info, |
6aa8b732 AK |
1302 | exit_code); |
1303 | ||
9d8f549d | 1304 | if (exit_code >= ARRAY_SIZE(svm_exit_handlers) |
6aa8b732 AK |
1305 | || svm_exit_handlers[exit_code] == 0) { |
1306 | kvm_run->exit_reason = KVM_EXIT_UNKNOWN; | |
364b625b | 1307 | kvm_run->hw.hardware_exit_reason = exit_code; |
6aa8b732 AK |
1308 | return 0; |
1309 | } | |
1310 | ||
e756fc62 | 1311 | return svm_exit_handlers[exit_code](svm, kvm_run); |
6aa8b732 AK |
1312 | } |
1313 | ||
1314 | static void reload_tss(struct kvm_vcpu *vcpu) | |
1315 | { | |
1316 | int cpu = raw_smp_processor_id(); | |
1317 | ||
1318 | struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu); | |
d77c26fc | 1319 | svm_data->tss_desc->type = 9; /* available 32/64-bit TSS */ |
6aa8b732 AK |
1320 | load_TR_desc(); |
1321 | } | |
1322 | ||
e756fc62 | 1323 | static void pre_svm_run(struct vcpu_svm *svm) |
6aa8b732 AK |
1324 | { |
1325 | int cpu = raw_smp_processor_id(); | |
1326 | ||
1327 | struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu); | |
1328 | ||
a2fa3e9f | 1329 | svm->vmcb->control.tlb_ctl = TLB_CONTROL_DO_NOTHING; |
e756fc62 | 1330 | if (svm->vcpu.cpu != cpu || |
a2fa3e9f | 1331 | svm->asid_generation != svm_data->asid_generation) |
e756fc62 | 1332 | new_asid(svm, svm_data); |
6aa8b732 AK |
1333 | } |
1334 | ||
1335 | ||
85f455f7 | 1336 | static inline void svm_inject_irq(struct vcpu_svm *svm, int irq) |
6aa8b732 AK |
1337 | { |
1338 | struct vmcb_control_area *control; | |
1339 | ||
e756fc62 | 1340 | control = &svm->vmcb->control; |
85f455f7 | 1341 | control->int_vector = irq; |
6aa8b732 AK |
1342 | control->int_ctl &= ~V_INTR_PRIO_MASK; |
1343 | control->int_ctl |= V_IRQ_MASK | | |
1344 | ((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT); | |
1345 | } | |
1346 | ||
2a8067f1 ED |
1347 | static void svm_set_irq(struct kvm_vcpu *vcpu, int irq) |
1348 | { | |
1349 | struct vcpu_svm *svm = to_svm(vcpu); | |
1350 | ||
1351 | svm_inject_irq(svm, irq); | |
1352 | } | |
1353 | ||
04d2cc77 | 1354 | static void svm_intr_assist(struct kvm_vcpu *vcpu) |
6aa8b732 | 1355 | { |
04d2cc77 | 1356 | struct vcpu_svm *svm = to_svm(vcpu); |
85f455f7 ED |
1357 | struct vmcb *vmcb = svm->vmcb; |
1358 | int intr_vector = -1; | |
1359 | ||
1360 | if ((vmcb->control.exit_int_info & SVM_EVTINJ_VALID) && | |
1361 | ((vmcb->control.exit_int_info & SVM_EVTINJ_TYPE_MASK) == 0)) { | |
1362 | intr_vector = vmcb->control.exit_int_info & | |
1363 | SVM_EVTINJ_VEC_MASK; | |
1364 | vmcb->control.exit_int_info = 0; | |
1365 | svm_inject_irq(svm, intr_vector); | |
1366 | return; | |
1367 | } | |
1368 | ||
1369 | if (vmcb->control.int_ctl & V_IRQ_MASK) | |
1370 | return; | |
1371 | ||
1b9778da | 1372 | if (!kvm_cpu_has_interrupt(vcpu)) |
85f455f7 ED |
1373 | return; |
1374 | ||
1375 | if (!(vmcb->save.rflags & X86_EFLAGS_IF) || | |
1376 | (vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) || | |
1377 | (vmcb->control.event_inj & SVM_EVTINJ_VALID)) { | |
1378 | /* unable to deliver irq, set pending irq */ | |
1379 | vmcb->control.intercept |= (1ULL << INTERCEPT_VINTR); | |
1380 | svm_inject_irq(svm, 0x0); | |
1381 | return; | |
1382 | } | |
1383 | /* Okay, we can deliver the interrupt: grab it and update PIC state. */ | |
1b9778da | 1384 | intr_vector = kvm_cpu_get_interrupt(vcpu); |
85f455f7 | 1385 | svm_inject_irq(svm, intr_vector); |
1b9778da | 1386 | kvm_timer_intr_post(vcpu, intr_vector); |
85f455f7 ED |
1387 | } |
1388 | ||
1389 | static void kvm_reput_irq(struct vcpu_svm *svm) | |
1390 | { | |
e756fc62 | 1391 | struct vmcb_control_area *control = &svm->vmcb->control; |
6aa8b732 | 1392 | |
7017fc3d ED |
1393 | if ((control->int_ctl & V_IRQ_MASK) |
1394 | && !irqchip_in_kernel(svm->vcpu.kvm)) { | |
6aa8b732 | 1395 | control->int_ctl &= ~V_IRQ_MASK; |
e756fc62 | 1396 | push_irq(&svm->vcpu, control->int_vector); |
6aa8b732 | 1397 | } |
c1150d8c | 1398 | |
e756fc62 | 1399 | svm->vcpu.interrupt_window_open = |
c1150d8c DL |
1400 | !(control->int_state & SVM_INTERRUPT_SHADOW_MASK); |
1401 | } | |
1402 | ||
85f455f7 ED |
1403 | static void svm_do_inject_vector(struct vcpu_svm *svm) |
1404 | { | |
1405 | struct kvm_vcpu *vcpu = &svm->vcpu; | |
1406 | int word_index = __ffs(vcpu->irq_summary); | |
1407 | int bit_index = __ffs(vcpu->irq_pending[word_index]); | |
1408 | int irq = word_index * BITS_PER_LONG + bit_index; | |
1409 | ||
1410 | clear_bit(bit_index, &vcpu->irq_pending[word_index]); | |
1411 | if (!vcpu->irq_pending[word_index]) | |
1412 | clear_bit(word_index, &vcpu->irq_summary); | |
1413 | svm_inject_irq(svm, irq); | |
1414 | } | |
1415 | ||
04d2cc77 | 1416 | static void do_interrupt_requests(struct kvm_vcpu *vcpu, |
c1150d8c DL |
1417 | struct kvm_run *kvm_run) |
1418 | { | |
04d2cc77 | 1419 | struct vcpu_svm *svm = to_svm(vcpu); |
a2fa3e9f | 1420 | struct vmcb_control_area *control = &svm->vmcb->control; |
c1150d8c | 1421 | |
e756fc62 | 1422 | svm->vcpu.interrupt_window_open = |
c1150d8c | 1423 | (!(control->int_state & SVM_INTERRUPT_SHADOW_MASK) && |
a2fa3e9f | 1424 | (svm->vmcb->save.rflags & X86_EFLAGS_IF)); |
c1150d8c | 1425 | |
e756fc62 | 1426 | if (svm->vcpu.interrupt_window_open && svm->vcpu.irq_summary) |
c1150d8c DL |
1427 | /* |
1428 | * If interrupts enabled, and not blocked by sti or mov ss. Good. | |
1429 | */ | |
85f455f7 | 1430 | svm_do_inject_vector(svm); |
c1150d8c DL |
1431 | |
1432 | /* | |
1433 | * Interrupts blocked. Wait for unblock. | |
1434 | */ | |
e756fc62 | 1435 | if (!svm->vcpu.interrupt_window_open && |
d77c26fc | 1436 | (svm->vcpu.irq_summary || kvm_run->request_interrupt_window)) |
c1150d8c | 1437 | control->intercept |= 1ULL << INTERCEPT_VINTR; |
d77c26fc | 1438 | else |
c1150d8c DL |
1439 | control->intercept &= ~(1ULL << INTERCEPT_VINTR); |
1440 | } | |
1441 | ||
6aa8b732 AK |
1442 | static void save_db_regs(unsigned long *db_regs) |
1443 | { | |
5aff458e AK |
1444 | asm volatile ("mov %%dr0, %0" : "=r"(db_regs[0])); |
1445 | asm volatile ("mov %%dr1, %0" : "=r"(db_regs[1])); | |
1446 | asm volatile ("mov %%dr2, %0" : "=r"(db_regs[2])); | |
1447 | asm volatile ("mov %%dr3, %0" : "=r"(db_regs[3])); | |
6aa8b732 AK |
1448 | } |
1449 | ||
1450 | static void load_db_regs(unsigned long *db_regs) | |
1451 | { | |
5aff458e AK |
1452 | asm volatile ("mov %0, %%dr0" : : "r"(db_regs[0])); |
1453 | asm volatile ("mov %0, %%dr1" : : "r"(db_regs[1])); | |
1454 | asm volatile ("mov %0, %%dr2" : : "r"(db_regs[2])); | |
1455 | asm volatile ("mov %0, %%dr3" : : "r"(db_regs[3])); | |
6aa8b732 AK |
1456 | } |
1457 | ||
d9e368d6 AK |
1458 | static void svm_flush_tlb(struct kvm_vcpu *vcpu) |
1459 | { | |
1460 | force_new_asid(vcpu); | |
1461 | } | |
1462 | ||
04d2cc77 AK |
1463 | static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu) |
1464 | { | |
1465 | } | |
1466 | ||
1467 | static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) | |
6aa8b732 | 1468 | { |
a2fa3e9f | 1469 | struct vcpu_svm *svm = to_svm(vcpu); |
6aa8b732 AK |
1470 | u16 fs_selector; |
1471 | u16 gs_selector; | |
1472 | u16 ldt_selector; | |
d9e368d6 | 1473 | |
e756fc62 | 1474 | pre_svm_run(svm); |
6aa8b732 AK |
1475 | |
1476 | save_host_msrs(vcpu); | |
1477 | fs_selector = read_fs(); | |
1478 | gs_selector = read_gs(); | |
1479 | ldt_selector = read_ldt(); | |
a2fa3e9f GH |
1480 | svm->host_cr2 = kvm_read_cr2(); |
1481 | svm->host_dr6 = read_dr6(); | |
1482 | svm->host_dr7 = read_dr7(); | |
1483 | svm->vmcb->save.cr2 = vcpu->cr2; | |
6aa8b732 | 1484 | |
a2fa3e9f | 1485 | if (svm->vmcb->save.dr7 & 0xff) { |
6aa8b732 | 1486 | write_dr7(0); |
a2fa3e9f GH |
1487 | save_db_regs(svm->host_db_regs); |
1488 | load_db_regs(svm->db_regs); | |
6aa8b732 | 1489 | } |
36241b8c | 1490 | |
04d2cc77 AK |
1491 | clgi(); |
1492 | ||
1493 | local_irq_enable(); | |
36241b8c | 1494 | |
6aa8b732 | 1495 | asm volatile ( |
05b3e0c2 | 1496 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
1497 | "push %%rbx; push %%rcx; push %%rdx;" |
1498 | "push %%rsi; push %%rdi; push %%rbp;" | |
1499 | "push %%r8; push %%r9; push %%r10; push %%r11;" | |
1500 | "push %%r12; push %%r13; push %%r14; push %%r15;" | |
1501 | #else | |
1502 | "push %%ebx; push %%ecx; push %%edx;" | |
1503 | "push %%esi; push %%edi; push %%ebp;" | |
1504 | #endif | |
1505 | ||
05b3e0c2 | 1506 | #ifdef CONFIG_X86_64 |
fb3f0f51 RR |
1507 | "mov %c[rbx](%[svm]), %%rbx \n\t" |
1508 | "mov %c[rcx](%[svm]), %%rcx \n\t" | |
1509 | "mov %c[rdx](%[svm]), %%rdx \n\t" | |
1510 | "mov %c[rsi](%[svm]), %%rsi \n\t" | |
1511 | "mov %c[rdi](%[svm]), %%rdi \n\t" | |
1512 | "mov %c[rbp](%[svm]), %%rbp \n\t" | |
1513 | "mov %c[r8](%[svm]), %%r8 \n\t" | |
1514 | "mov %c[r9](%[svm]), %%r9 \n\t" | |
1515 | "mov %c[r10](%[svm]), %%r10 \n\t" | |
1516 | "mov %c[r11](%[svm]), %%r11 \n\t" | |
1517 | "mov %c[r12](%[svm]), %%r12 \n\t" | |
1518 | "mov %c[r13](%[svm]), %%r13 \n\t" | |
1519 | "mov %c[r14](%[svm]), %%r14 \n\t" | |
1520 | "mov %c[r15](%[svm]), %%r15 \n\t" | |
6aa8b732 | 1521 | #else |
fb3f0f51 RR |
1522 | "mov %c[rbx](%[svm]), %%ebx \n\t" |
1523 | "mov %c[rcx](%[svm]), %%ecx \n\t" | |
1524 | "mov %c[rdx](%[svm]), %%edx \n\t" | |
1525 | "mov %c[rsi](%[svm]), %%esi \n\t" | |
1526 | "mov %c[rdi](%[svm]), %%edi \n\t" | |
1527 | "mov %c[rbp](%[svm]), %%ebp \n\t" | |
6aa8b732 AK |
1528 | #endif |
1529 | ||
05b3e0c2 | 1530 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
1531 | /* Enter guest mode */ |
1532 | "push %%rax \n\t" | |
fb3f0f51 | 1533 | "mov %c[vmcb](%[svm]), %%rax \n\t" |
6aa8b732 AK |
1534 | SVM_VMLOAD "\n\t" |
1535 | SVM_VMRUN "\n\t" | |
1536 | SVM_VMSAVE "\n\t" | |
1537 | "pop %%rax \n\t" | |
1538 | #else | |
1539 | /* Enter guest mode */ | |
1540 | "push %%eax \n\t" | |
fb3f0f51 | 1541 | "mov %c[vmcb](%[svm]), %%eax \n\t" |
6aa8b732 AK |
1542 | SVM_VMLOAD "\n\t" |
1543 | SVM_VMRUN "\n\t" | |
1544 | SVM_VMSAVE "\n\t" | |
1545 | "pop %%eax \n\t" | |
1546 | #endif | |
1547 | ||
1548 | /* Save guest registers, load host registers */ | |
05b3e0c2 | 1549 | #ifdef CONFIG_X86_64 |
fb3f0f51 RR |
1550 | "mov %%rbx, %c[rbx](%[svm]) \n\t" |
1551 | "mov %%rcx, %c[rcx](%[svm]) \n\t" | |
1552 | "mov %%rdx, %c[rdx](%[svm]) \n\t" | |
1553 | "mov %%rsi, %c[rsi](%[svm]) \n\t" | |
1554 | "mov %%rdi, %c[rdi](%[svm]) \n\t" | |
1555 | "mov %%rbp, %c[rbp](%[svm]) \n\t" | |
1556 | "mov %%r8, %c[r8](%[svm]) \n\t" | |
1557 | "mov %%r9, %c[r9](%[svm]) \n\t" | |
1558 | "mov %%r10, %c[r10](%[svm]) \n\t" | |
1559 | "mov %%r11, %c[r11](%[svm]) \n\t" | |
1560 | "mov %%r12, %c[r12](%[svm]) \n\t" | |
1561 | "mov %%r13, %c[r13](%[svm]) \n\t" | |
1562 | "mov %%r14, %c[r14](%[svm]) \n\t" | |
1563 | "mov %%r15, %c[r15](%[svm]) \n\t" | |
6aa8b732 AK |
1564 | |
1565 | "pop %%r15; pop %%r14; pop %%r13; pop %%r12;" | |
1566 | "pop %%r11; pop %%r10; pop %%r9; pop %%r8;" | |
1567 | "pop %%rbp; pop %%rdi; pop %%rsi;" | |
1568 | "pop %%rdx; pop %%rcx; pop %%rbx; \n\t" | |
1569 | #else | |
fb3f0f51 RR |
1570 | "mov %%ebx, %c[rbx](%[svm]) \n\t" |
1571 | "mov %%ecx, %c[rcx](%[svm]) \n\t" | |
1572 | "mov %%edx, %c[rdx](%[svm]) \n\t" | |
1573 | "mov %%esi, %c[rsi](%[svm]) \n\t" | |
1574 | "mov %%edi, %c[rdi](%[svm]) \n\t" | |
1575 | "mov %%ebp, %c[rbp](%[svm]) \n\t" | |
6aa8b732 AK |
1576 | |
1577 | "pop %%ebp; pop %%edi; pop %%esi;" | |
1578 | "pop %%edx; pop %%ecx; pop %%ebx; \n\t" | |
1579 | #endif | |
1580 | : | |
fb3f0f51 | 1581 | : [svm]"a"(svm), |
6aa8b732 | 1582 | [vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)), |
d77c26fc MD |
1583 | [rbx]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_RBX])), |
1584 | [rcx]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_RCX])), | |
1585 | [rdx]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_RDX])), | |
1586 | [rsi]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_RSI])), | |
1587 | [rdi]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_RDI])), | |
1588 | [rbp]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_RBP])) | |
05b3e0c2 | 1589 | #ifdef CONFIG_X86_64 |
d77c26fc MD |
1590 | , [r8]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R8])), |
1591 | [r9]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R9])), | |
1592 | [r10]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R10])), | |
1593 | [r11]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R11])), | |
1594 | [r12]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R12])), | |
1595 | [r13]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R13])), | |
1596 | [r14]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R14])), | |
1597 | [r15]"i"(offsetof(struct vcpu_svm, vcpu.regs[VCPU_REGS_R15])) | |
6aa8b732 | 1598 | #endif |
d77c26fc | 1599 | : "cc", "memory"); |
6aa8b732 | 1600 | |
a2fa3e9f GH |
1601 | if ((svm->vmcb->save.dr7 & 0xff)) |
1602 | load_db_regs(svm->host_db_regs); | |
6aa8b732 | 1603 | |
a2fa3e9f | 1604 | vcpu->cr2 = svm->vmcb->save.cr2; |
6aa8b732 | 1605 | |
a2fa3e9f GH |
1606 | write_dr6(svm->host_dr6); |
1607 | write_dr7(svm->host_dr7); | |
1608 | kvm_write_cr2(svm->host_cr2); | |
6aa8b732 AK |
1609 | |
1610 | load_fs(fs_selector); | |
1611 | load_gs(gs_selector); | |
1612 | load_ldt(ldt_selector); | |
1613 | load_host_msrs(vcpu); | |
1614 | ||
1615 | reload_tss(vcpu); | |
1616 | ||
56ba47dd AK |
1617 | local_irq_disable(); |
1618 | ||
1619 | stgi(); | |
1620 | ||
a2fa3e9f | 1621 | svm->next_rip = 0; |
6aa8b732 AK |
1622 | } |
1623 | ||
6aa8b732 AK |
1624 | static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root) |
1625 | { | |
a2fa3e9f GH |
1626 | struct vcpu_svm *svm = to_svm(vcpu); |
1627 | ||
1628 | svm->vmcb->save.cr3 = root; | |
6aa8b732 | 1629 | force_new_asid(vcpu); |
7807fa6c AL |
1630 | |
1631 | if (vcpu->fpu_active) { | |
a2fa3e9f GH |
1632 | svm->vmcb->control.intercept_exceptions |= (1 << NM_VECTOR); |
1633 | svm->vmcb->save.cr0 |= X86_CR0_TS; | |
7807fa6c AL |
1634 | vcpu->fpu_active = 0; |
1635 | } | |
6aa8b732 AK |
1636 | } |
1637 | ||
1638 | static void svm_inject_page_fault(struct kvm_vcpu *vcpu, | |
1639 | unsigned long addr, | |
1640 | uint32_t err_code) | |
1641 | { | |
a2fa3e9f GH |
1642 | struct vcpu_svm *svm = to_svm(vcpu); |
1643 | uint32_t exit_int_info = svm->vmcb->control.exit_int_info; | |
6aa8b732 | 1644 | |
1165f5fe | 1645 | ++vcpu->stat.pf_guest; |
6aa8b732 AK |
1646 | |
1647 | if (is_page_fault(exit_int_info)) { | |
1648 | ||
a2fa3e9f GH |
1649 | svm->vmcb->control.event_inj_err = 0; |
1650 | svm->vmcb->control.event_inj = SVM_EVTINJ_VALID | | |
1651 | SVM_EVTINJ_VALID_ERR | | |
1652 | SVM_EVTINJ_TYPE_EXEPT | | |
1653 | DF_VECTOR; | |
6aa8b732 AK |
1654 | return; |
1655 | } | |
1656 | vcpu->cr2 = addr; | |
a2fa3e9f GH |
1657 | svm->vmcb->save.cr2 = addr; |
1658 | svm->vmcb->control.event_inj = SVM_EVTINJ_VALID | | |
1659 | SVM_EVTINJ_VALID_ERR | | |
1660 | SVM_EVTINJ_TYPE_EXEPT | | |
1661 | PF_VECTOR; | |
1662 | svm->vmcb->control.event_inj_err = err_code; | |
6aa8b732 AK |
1663 | } |
1664 | ||
1665 | ||
1666 | static int is_disabled(void) | |
1667 | { | |
6031a61c JR |
1668 | u64 vm_cr; |
1669 | ||
1670 | rdmsrl(MSR_VM_CR, vm_cr); | |
1671 | if (vm_cr & (1 << SVM_VM_CR_SVM_DISABLE)) | |
1672 | return 1; | |
1673 | ||
6aa8b732 AK |
1674 | return 0; |
1675 | } | |
1676 | ||
102d8325 IM |
1677 | static void |
1678 | svm_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall) | |
1679 | { | |
1680 | /* | |
1681 | * Patch in the VMMCALL instruction: | |
1682 | */ | |
1683 | hypercall[0] = 0x0f; | |
1684 | hypercall[1] = 0x01; | |
1685 | hypercall[2] = 0xd9; | |
102d8325 IM |
1686 | } |
1687 | ||
002c7f7c YS |
1688 | static void svm_check_processor_compat(void *rtn) |
1689 | { | |
1690 | *(int *)rtn = 0; | |
1691 | } | |
1692 | ||
cbdd1bea | 1693 | static struct kvm_x86_ops svm_x86_ops = { |
6aa8b732 AK |
1694 | .cpu_has_kvm_support = has_svm, |
1695 | .disabled_by_bios = is_disabled, | |
1696 | .hardware_setup = svm_hardware_setup, | |
1697 | .hardware_unsetup = svm_hardware_unsetup, | |
002c7f7c | 1698 | .check_processor_compatibility = svm_check_processor_compat, |
6aa8b732 AK |
1699 | .hardware_enable = svm_hardware_enable, |
1700 | .hardware_disable = svm_hardware_disable, | |
1701 | ||
1702 | .vcpu_create = svm_create_vcpu, | |
1703 | .vcpu_free = svm_free_vcpu, | |
04d2cc77 | 1704 | .vcpu_reset = svm_vcpu_reset, |
6aa8b732 | 1705 | |
04d2cc77 | 1706 | .prepare_guest_switch = svm_prepare_guest_switch, |
6aa8b732 AK |
1707 | .vcpu_load = svm_vcpu_load, |
1708 | .vcpu_put = svm_vcpu_put, | |
774c47f1 | 1709 | .vcpu_decache = svm_vcpu_decache, |
6aa8b732 AK |
1710 | |
1711 | .set_guest_debug = svm_guest_debug, | |
1712 | .get_msr = svm_get_msr, | |
1713 | .set_msr = svm_set_msr, | |
1714 | .get_segment_base = svm_get_segment_base, | |
1715 | .get_segment = svm_get_segment, | |
1716 | .set_segment = svm_set_segment, | |
1747fb71 | 1717 | .get_cs_db_l_bits = kvm_get_cs_db_l_bits, |
25c4c276 | 1718 | .decache_cr4_guest_bits = svm_decache_cr4_guest_bits, |
6aa8b732 | 1719 | .set_cr0 = svm_set_cr0, |
6aa8b732 AK |
1720 | .set_cr3 = svm_set_cr3, |
1721 | .set_cr4 = svm_set_cr4, | |
1722 | .set_efer = svm_set_efer, | |
1723 | .get_idt = svm_get_idt, | |
1724 | .set_idt = svm_set_idt, | |
1725 | .get_gdt = svm_get_gdt, | |
1726 | .set_gdt = svm_set_gdt, | |
1727 | .get_dr = svm_get_dr, | |
1728 | .set_dr = svm_set_dr, | |
1729 | .cache_regs = svm_cache_regs, | |
1730 | .decache_regs = svm_decache_regs, | |
1731 | .get_rflags = svm_get_rflags, | |
1732 | .set_rflags = svm_set_rflags, | |
1733 | ||
6aa8b732 AK |
1734 | .tlb_flush = svm_flush_tlb, |
1735 | .inject_page_fault = svm_inject_page_fault, | |
1736 | ||
1737 | .inject_gp = svm_inject_gp, | |
1738 | ||
1739 | .run = svm_vcpu_run, | |
04d2cc77 | 1740 | .handle_exit = handle_exit, |
6aa8b732 | 1741 | .skip_emulated_instruction = skip_emulated_instruction, |
102d8325 | 1742 | .patch_hypercall = svm_patch_hypercall, |
2a8067f1 ED |
1743 | .get_irq = svm_get_irq, |
1744 | .set_irq = svm_set_irq, | |
04d2cc77 AK |
1745 | .inject_pending_irq = svm_intr_assist, |
1746 | .inject_pending_vectors = do_interrupt_requests, | |
6aa8b732 AK |
1747 | }; |
1748 | ||
1749 | static int __init svm_init(void) | |
1750 | { | |
cbdd1bea | 1751 | return kvm_init_x86(&svm_x86_ops, sizeof(struct vcpu_svm), |
c16f862d | 1752 | THIS_MODULE); |
6aa8b732 AK |
1753 | } |
1754 | ||
1755 | static void __exit svm_exit(void) | |
1756 | { | |
cbdd1bea | 1757 | kvm_exit_x86(); |
6aa8b732 AK |
1758 | } |
1759 | ||
1760 | module_init(svm_init) | |
1761 | module_exit(svm_exit) |