2 * Kernel-based Virtual Machine driver for Linux
6 * Copyright (C) 2006 Qumranet, Inc.
9 * Yaniv Kamay <yaniv@qumranet.com>
10 * Avi Kivity <avi@qumranet.com>
12 * This work is licensed under the terms of the GNU GPL, version 2. See
13 * the COPYING file in the top-level directory.
16 #include <linux/kvm_host.h>
20 #include "kvm_cache_regs.h"
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/vmalloc.h>
26 #include <linux/highmem.h>
27 #include <linux/sched.h>
28 #include <linux/ftrace_event.h>
32 #include <asm/virtext.h>
35 #define __ex(x) __kvm_handle_fault_on_reboot(x)
37 MODULE_AUTHOR("Qumranet");
38 MODULE_LICENSE("GPL");
40 #define IOPM_ALLOC_ORDER 2
41 #define MSRPM_ALLOC_ORDER 1
43 #define SEG_TYPE_LDT 2
44 #define SEG_TYPE_BUSY_TSS16 3
46 #define SVM_FEATURE_NPT (1 << 0)
47 #define SVM_FEATURE_LBRV (1 << 1)
48 #define SVM_FEATURE_SVML (1 << 2)
50 #define NESTED_EXIT_HOST 0 /* Exit handled on host level */
51 #define NESTED_EXIT_DONE 1 /* Exit caused nested vmexit */
52 #define NESTED_EXIT_CONTINUE 2 /* Further checks needed */
54 #define DEBUGCTL_RESERVED_BITS (~(0x3fULL))
56 /* Turn on to get debugging output*/
57 /* #define NESTED_DEBUG */
60 #define nsvm_printk(fmt, args...) printk(KERN_INFO fmt, ## args)
62 #define nsvm_printk(fmt, args...) do {} while(0)
65 static const u32 host_save_user_msrs[] = {
67 MSR_STAR, MSR_LSTAR, MSR_CSTAR, MSR_SYSCALL_MASK, MSR_KERNEL_GS_BASE,
70 MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP,
73 #define NR_HOST_SAVE_USER_MSRS ARRAY_SIZE(host_save_user_msrs)
82 /* These are the merged vectors */
85 /* gpa pointers to the real vectors */
88 /* cache for intercepts of the guest */
89 u16 intercept_cr_read;
90 u16 intercept_cr_write;
91 u16 intercept_dr_read;
92 u16 intercept_dr_write;
93 u32 intercept_exceptions;
101 unsigned long vmcb_pa;
102 struct svm_cpu_data *svm_data;
103 uint64_t asid_generation;
104 uint64_t sysenter_esp;
105 uint64_t sysenter_eip;
109 u64 host_user_msrs[NR_HOST_SAVE_USER_MSRS];
114 struct nested_state nested;
117 /* enable NPT for AMD64 and X86 with PAE */
118 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
119 static bool npt_enabled = true;
121 static bool npt_enabled = false;
125 module_param(npt, int, S_IRUGO);
127 static int nested = 1;
128 module_param(nested, int, S_IRUGO);
130 static void svm_flush_tlb(struct kvm_vcpu *vcpu);
131 static void svm_complete_interrupts(struct vcpu_svm *svm);
133 static int nested_svm_exit_handled(struct vcpu_svm *svm);
134 static int nested_svm_vmexit(struct vcpu_svm *svm);
135 static int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
136 bool has_error_code, u32 error_code);
138 static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
140 return container_of(vcpu, struct vcpu_svm, vcpu);
143 static inline bool is_nested(struct vcpu_svm *svm)
145 return svm->nested.vmcb;
148 static inline void enable_gif(struct vcpu_svm *svm)
150 svm->vcpu.arch.hflags |= HF_GIF_MASK;
153 static inline void disable_gif(struct vcpu_svm *svm)
155 svm->vcpu.arch.hflags &= ~HF_GIF_MASK;
158 static inline bool gif_set(struct vcpu_svm *svm)
160 return !!(svm->vcpu.arch.hflags & HF_GIF_MASK);
163 static unsigned long iopm_base;
165 struct kvm_ldttss_desc {
168 unsigned base1 : 8, type : 5, dpl : 2, p : 1;
169 unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8;
172 } __attribute__((packed));
174 struct svm_cpu_data {
180 struct kvm_ldttss_desc *tss_desc;
182 struct page *save_area;
185 static DEFINE_PER_CPU(struct svm_cpu_data *, svm_data);
186 static uint32_t svm_features;
188 struct svm_init_data {
193 static u32 msrpm_ranges[] = {0, 0xc0000000, 0xc0010000};
195 #define NUM_MSR_MAPS ARRAY_SIZE(msrpm_ranges)
196 #define MSRS_RANGE_SIZE 2048
197 #define MSRS_IN_RANGE (MSRS_RANGE_SIZE * 8 / 2)
199 #define MAX_INST_SIZE 15
201 static inline u32 svm_has(u32 feat)
203 return svm_features & feat;
206 static inline void clgi(void)
208 asm volatile (__ex(SVM_CLGI));
211 static inline void stgi(void)
213 asm volatile (__ex(SVM_STGI));
216 static inline void invlpga(unsigned long addr, u32 asid)
218 asm volatile (__ex(SVM_INVLPGA) :: "a"(addr), "c"(asid));
221 static inline void force_new_asid(struct kvm_vcpu *vcpu)
223 to_svm(vcpu)->asid_generation--;
226 static inline void flush_guest_tlb(struct kvm_vcpu *vcpu)
228 force_new_asid(vcpu);
231 static void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer)
233 if (!npt_enabled && !(efer & EFER_LMA))
236 to_svm(vcpu)->vmcb->save.efer = efer | EFER_SVME;
237 vcpu->arch.shadow_efer = efer;
240 static void svm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr,
241 bool has_error_code, u32 error_code)
243 struct vcpu_svm *svm = to_svm(vcpu);
245 /* If we are within a nested VM we'd better #VMEXIT and let the
246 guest handle the exception */
247 if (nested_svm_check_exception(svm, nr, has_error_code, error_code))
250 svm->vmcb->control.event_inj = nr
252 | (has_error_code ? SVM_EVTINJ_VALID_ERR : 0)
253 | SVM_EVTINJ_TYPE_EXEPT;
254 svm->vmcb->control.event_inj_err = error_code;
257 static int is_external_interrupt(u32 info)
259 info &= SVM_EVTINJ_TYPE_MASK | SVM_EVTINJ_VALID;
260 return info == (SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR);
263 static u32 svm_get_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
265 struct vcpu_svm *svm = to_svm(vcpu);
268 if (svm->vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK)
269 ret |= X86_SHADOW_INT_STI | X86_SHADOW_INT_MOV_SS;
273 static void svm_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
275 struct vcpu_svm *svm = to_svm(vcpu);
278 svm->vmcb->control.int_state &= ~SVM_INTERRUPT_SHADOW_MASK;
280 svm->vmcb->control.int_state |= SVM_INTERRUPT_SHADOW_MASK;
284 static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
286 struct vcpu_svm *svm = to_svm(vcpu);
288 if (!svm->next_rip) {
289 if (emulate_instruction(vcpu, 0, 0, EMULTYPE_SKIP) !=
291 printk(KERN_DEBUG "%s: NOP\n", __func__);
294 if (svm->next_rip - kvm_rip_read(vcpu) > MAX_INST_SIZE)
295 printk(KERN_ERR "%s: ip 0x%lx next 0x%llx\n",
296 __func__, kvm_rip_read(vcpu), svm->next_rip);
298 kvm_rip_write(vcpu, svm->next_rip);
299 svm_set_interrupt_shadow(vcpu, 0);
302 static int has_svm(void)
306 if (!cpu_has_svm(&msg)) {
307 printk(KERN_INFO "has_svm: %s\n", msg);
314 static void svm_hardware_disable(void *garbage)
319 static void svm_hardware_enable(void *garbage)
322 struct svm_cpu_data *svm_data;
324 struct descriptor_table gdt_descr;
325 struct desc_struct *gdt;
326 int me = raw_smp_processor_id();
329 printk(KERN_ERR "svm_cpu_init: err EOPNOTSUPP on %d\n", me);
332 svm_data = per_cpu(svm_data, me);
335 printk(KERN_ERR "svm_cpu_init: svm_data is NULL on %d\n",
340 svm_data->asid_generation = 1;
341 svm_data->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1;
342 svm_data->next_asid = svm_data->max_asid + 1;
344 kvm_get_gdt(&gdt_descr);
345 gdt = (struct desc_struct *)gdt_descr.base;
346 svm_data->tss_desc = (struct kvm_ldttss_desc *)(gdt + GDT_ENTRY_TSS);
348 rdmsrl(MSR_EFER, efer);
349 wrmsrl(MSR_EFER, efer | EFER_SVME);
351 wrmsrl(MSR_VM_HSAVE_PA,
352 page_to_pfn(svm_data->save_area) << PAGE_SHIFT);
355 static void svm_cpu_uninit(int cpu)
357 struct svm_cpu_data *svm_data
358 = per_cpu(svm_data, raw_smp_processor_id());
363 per_cpu(svm_data, raw_smp_processor_id()) = NULL;
364 __free_page(svm_data->save_area);
368 static int svm_cpu_init(int cpu)
370 struct svm_cpu_data *svm_data;
373 svm_data = kzalloc(sizeof(struct svm_cpu_data), GFP_KERNEL);
377 svm_data->save_area = alloc_page(GFP_KERNEL);
379 if (!svm_data->save_area)
382 per_cpu(svm_data, cpu) = svm_data;
392 static void set_msr_interception(u32 *msrpm, unsigned msr,
397 for (i = 0; i < NUM_MSR_MAPS; i++) {
398 if (msr >= msrpm_ranges[i] &&
399 msr < msrpm_ranges[i] + MSRS_IN_RANGE) {
400 u32 msr_offset = (i * MSRS_IN_RANGE + msr -
401 msrpm_ranges[i]) * 2;
403 u32 *base = msrpm + (msr_offset / 32);
404 u32 msr_shift = msr_offset % 32;
405 u32 mask = ((write) ? 0 : 2) | ((read) ? 0 : 1);
406 *base = (*base & ~(0x3 << msr_shift)) |
414 static void svm_vcpu_init_msrpm(u32 *msrpm)
416 memset(msrpm, 0xff, PAGE_SIZE * (1 << MSRPM_ALLOC_ORDER));
419 set_msr_interception(msrpm, MSR_GS_BASE, 1, 1);
420 set_msr_interception(msrpm, MSR_FS_BASE, 1, 1);
421 set_msr_interception(msrpm, MSR_KERNEL_GS_BASE, 1, 1);
422 set_msr_interception(msrpm, MSR_LSTAR, 1, 1);
423 set_msr_interception(msrpm, MSR_CSTAR, 1, 1);
424 set_msr_interception(msrpm, MSR_SYSCALL_MASK, 1, 1);
426 set_msr_interception(msrpm, MSR_K6_STAR, 1, 1);
427 set_msr_interception(msrpm, MSR_IA32_SYSENTER_CS, 1, 1);
430 static void svm_enable_lbrv(struct vcpu_svm *svm)
432 u32 *msrpm = svm->msrpm;
434 svm->vmcb->control.lbr_ctl = 1;
435 set_msr_interception(msrpm, MSR_IA32_LASTBRANCHFROMIP, 1, 1);
436 set_msr_interception(msrpm, MSR_IA32_LASTBRANCHTOIP, 1, 1);
437 set_msr_interception(msrpm, MSR_IA32_LASTINTFROMIP, 1, 1);
438 set_msr_interception(msrpm, MSR_IA32_LASTINTTOIP, 1, 1);
441 static void svm_disable_lbrv(struct vcpu_svm *svm)
443 u32 *msrpm = svm->msrpm;
445 svm->vmcb->control.lbr_ctl = 0;
446 set_msr_interception(msrpm, MSR_IA32_LASTBRANCHFROMIP, 0, 0);
447 set_msr_interception(msrpm, MSR_IA32_LASTBRANCHTOIP, 0, 0);
448 set_msr_interception(msrpm, MSR_IA32_LASTINTFROMIP, 0, 0);
449 set_msr_interception(msrpm, MSR_IA32_LASTINTTOIP, 0, 0);
452 static __init int svm_hardware_setup(void)
455 struct page *iopm_pages;
459 iopm_pages = alloc_pages(GFP_KERNEL, IOPM_ALLOC_ORDER);
464 iopm_va = page_address(iopm_pages);
465 memset(iopm_va, 0xff, PAGE_SIZE * (1 << IOPM_ALLOC_ORDER));
466 iopm_base = page_to_pfn(iopm_pages) << PAGE_SHIFT;
468 if (boot_cpu_has(X86_FEATURE_NX))
469 kvm_enable_efer_bits(EFER_NX);
471 if (boot_cpu_has(X86_FEATURE_FXSR_OPT))
472 kvm_enable_efer_bits(EFER_FFXSR);
475 printk(KERN_INFO "kvm: Nested Virtualization enabled\n");
476 kvm_enable_efer_bits(EFER_SVME);
479 for_each_online_cpu(cpu) {
480 r = svm_cpu_init(cpu);
485 svm_features = cpuid_edx(SVM_CPUID_FUNC);
487 if (!svm_has(SVM_FEATURE_NPT))
490 if (npt_enabled && !npt) {
491 printk(KERN_INFO "kvm: Nested Paging disabled\n");
496 printk(KERN_INFO "kvm: Nested Paging enabled\n");
504 __free_pages(iopm_pages, IOPM_ALLOC_ORDER);
509 static __exit void svm_hardware_unsetup(void)
513 for_each_online_cpu(cpu)
516 __free_pages(pfn_to_page(iopm_base >> PAGE_SHIFT), IOPM_ALLOC_ORDER);
520 static void init_seg(struct vmcb_seg *seg)
523 seg->attrib = SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK |
524 SVM_SELECTOR_WRITE_MASK; /* Read/Write Data Segment */
529 static void init_sys_seg(struct vmcb_seg *seg, uint32_t type)
532 seg->attrib = SVM_SELECTOR_P_MASK | type;
537 static void init_vmcb(struct vcpu_svm *svm)
539 struct vmcb_control_area *control = &svm->vmcb->control;
540 struct vmcb_save_area *save = &svm->vmcb->save;
542 control->intercept_cr_read = INTERCEPT_CR0_MASK |
546 control->intercept_cr_write = INTERCEPT_CR0_MASK |
551 control->intercept_dr_read = INTERCEPT_DR0_MASK |
556 control->intercept_dr_write = INTERCEPT_DR0_MASK |
563 control->intercept_exceptions = (1 << PF_VECTOR) |
568 control->intercept = (1ULL << INTERCEPT_INTR) |
569 (1ULL << INTERCEPT_NMI) |
570 (1ULL << INTERCEPT_SMI) |
571 (1ULL << INTERCEPT_CPUID) |
572 (1ULL << INTERCEPT_INVD) |
573 (1ULL << INTERCEPT_HLT) |
574 (1ULL << INTERCEPT_INVLPG) |
575 (1ULL << INTERCEPT_INVLPGA) |
576 (1ULL << INTERCEPT_IOIO_PROT) |
577 (1ULL << INTERCEPT_MSR_PROT) |
578 (1ULL << INTERCEPT_TASK_SWITCH) |
579 (1ULL << INTERCEPT_SHUTDOWN) |
580 (1ULL << INTERCEPT_VMRUN) |
581 (1ULL << INTERCEPT_VMMCALL) |
582 (1ULL << INTERCEPT_VMLOAD) |
583 (1ULL << INTERCEPT_VMSAVE) |
584 (1ULL << INTERCEPT_STGI) |
585 (1ULL << INTERCEPT_CLGI) |
586 (1ULL << INTERCEPT_SKINIT) |
587 (1ULL << INTERCEPT_WBINVD) |
588 (1ULL << INTERCEPT_MONITOR) |
589 (1ULL << INTERCEPT_MWAIT);
591 control->iopm_base_pa = iopm_base;
592 control->msrpm_base_pa = __pa(svm->msrpm);
593 control->tsc_offset = 0;
594 control->int_ctl = V_INTR_MASKING_MASK;
602 save->cs.selector = 0xf000;
603 /* Executable/Readable Code Segment */
604 save->cs.attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK |
605 SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK;
606 save->cs.limit = 0xffff;
608 * cs.base should really be 0xffff0000, but vmx can't handle that, so
609 * be consistent with it.
611 * Replace when we have real mode working for vmx.
613 save->cs.base = 0xf0000;
615 save->gdtr.limit = 0xffff;
616 save->idtr.limit = 0xffff;
618 init_sys_seg(&save->ldtr, SEG_TYPE_LDT);
619 init_sys_seg(&save->tr, SEG_TYPE_BUSY_TSS16);
621 save->efer = EFER_SVME;
622 save->dr6 = 0xffff0ff0;
625 save->rip = 0x0000fff0;
626 svm->vcpu.arch.regs[VCPU_REGS_RIP] = save->rip;
629 * cr0 val on cpu init should be 0x60000010, we enable cpu
630 * cache by default. the orderly way is to enable cache in bios.
632 save->cr0 = 0x00000010 | X86_CR0_PG | X86_CR0_WP;
633 save->cr4 = X86_CR4_PAE;
637 /* Setup VMCB for Nested Paging */
638 control->nested_ctl = 1;
639 control->intercept &= ~((1ULL << INTERCEPT_TASK_SWITCH) |
640 (1ULL << INTERCEPT_INVLPG));
641 control->intercept_exceptions &= ~(1 << PF_VECTOR);
642 control->intercept_cr_read &= ~(INTERCEPT_CR0_MASK|
644 control->intercept_cr_write &= ~(INTERCEPT_CR0_MASK|
646 save->g_pat = 0x0007040600070406ULL;
647 /* enable caching because the QEMU Bios doesn't enable it */
648 save->cr0 = X86_CR0_ET;
652 force_new_asid(&svm->vcpu);
654 svm->nested.vmcb = 0;
655 svm->vcpu.arch.hflags = 0;
660 static int svm_vcpu_reset(struct kvm_vcpu *vcpu)
662 struct vcpu_svm *svm = to_svm(vcpu);
666 if (!kvm_vcpu_is_bsp(vcpu)) {
667 kvm_rip_write(vcpu, 0);
668 svm->vmcb->save.cs.base = svm->vcpu.arch.sipi_vector << 12;
669 svm->vmcb->save.cs.selector = svm->vcpu.arch.sipi_vector << 8;
671 vcpu->arch.regs_avail = ~0;
672 vcpu->arch.regs_dirty = ~0;
677 static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id)
679 struct vcpu_svm *svm;
681 struct page *msrpm_pages;
682 struct page *hsave_page;
683 struct page *nested_msrpm_pages;
686 svm = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
692 err = kvm_vcpu_init(&svm->vcpu, kvm, id);
696 page = alloc_page(GFP_KERNEL);
703 msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER);
707 nested_msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER);
708 if (!nested_msrpm_pages)
711 svm->msrpm = page_address(msrpm_pages);
712 svm_vcpu_init_msrpm(svm->msrpm);
714 hsave_page = alloc_page(GFP_KERNEL);
717 svm->nested.hsave = page_address(hsave_page);
719 svm->nested.msrpm = page_address(nested_msrpm_pages);
721 svm->vmcb = page_address(page);
722 clear_page(svm->vmcb);
723 svm->vmcb_pa = page_to_pfn(page) << PAGE_SHIFT;
724 svm->asid_generation = 0;
728 svm->vcpu.fpu_active = 1;
729 svm->vcpu.arch.apic_base = 0xfee00000 | MSR_IA32_APICBASE_ENABLE;
730 if (kvm_vcpu_is_bsp(&svm->vcpu))
731 svm->vcpu.arch.apic_base |= MSR_IA32_APICBASE_BSP;
736 kvm_vcpu_uninit(&svm->vcpu);
738 kmem_cache_free(kvm_vcpu_cache, svm);
743 static void svm_free_vcpu(struct kvm_vcpu *vcpu)
745 struct vcpu_svm *svm = to_svm(vcpu);
747 __free_page(pfn_to_page(svm->vmcb_pa >> PAGE_SHIFT));
748 __free_pages(virt_to_page(svm->msrpm), MSRPM_ALLOC_ORDER);
749 __free_page(virt_to_page(svm->nested.hsave));
750 __free_pages(virt_to_page(svm->nested.msrpm), MSRPM_ALLOC_ORDER);
751 kvm_vcpu_uninit(vcpu);
752 kmem_cache_free(kvm_vcpu_cache, svm);
755 static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
757 struct vcpu_svm *svm = to_svm(vcpu);
760 if (unlikely(cpu != vcpu->cpu)) {
764 * Make sure that the guest sees a monotonically
768 delta = vcpu->arch.host_tsc - tsc_this;
769 svm->vmcb->control.tsc_offset += delta;
771 svm->nested.hsave->control.tsc_offset += delta;
773 kvm_migrate_timers(vcpu);
774 svm->asid_generation = 0;
777 for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
778 rdmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
781 static void svm_vcpu_put(struct kvm_vcpu *vcpu)
783 struct vcpu_svm *svm = to_svm(vcpu);
786 ++vcpu->stat.host_state_reload;
787 for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
788 wrmsrl(host_save_user_msrs[i], svm->host_user_msrs[i]);
790 rdtscll(vcpu->arch.host_tsc);
793 static unsigned long svm_get_rflags(struct kvm_vcpu *vcpu)
795 return to_svm(vcpu)->vmcb->save.rflags;
798 static void svm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
800 to_svm(vcpu)->vmcb->save.rflags = rflags;
803 static void svm_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
806 case VCPU_EXREG_PDPTR:
807 BUG_ON(!npt_enabled);
808 load_pdptrs(vcpu, vcpu->arch.cr3);
815 static void svm_set_vintr(struct vcpu_svm *svm)
817 svm->vmcb->control.intercept |= 1ULL << INTERCEPT_VINTR;
820 static void svm_clear_vintr(struct vcpu_svm *svm)
822 svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_VINTR);
825 static struct vmcb_seg *svm_seg(struct kvm_vcpu *vcpu, int seg)
827 struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save;
830 case VCPU_SREG_CS: return &save->cs;
831 case VCPU_SREG_DS: return &save->ds;
832 case VCPU_SREG_ES: return &save->es;
833 case VCPU_SREG_FS: return &save->fs;
834 case VCPU_SREG_GS: return &save->gs;
835 case VCPU_SREG_SS: return &save->ss;
836 case VCPU_SREG_TR: return &save->tr;
837 case VCPU_SREG_LDTR: return &save->ldtr;
843 static u64 svm_get_segment_base(struct kvm_vcpu *vcpu, int seg)
845 struct vmcb_seg *s = svm_seg(vcpu, seg);
850 static void svm_get_segment(struct kvm_vcpu *vcpu,
851 struct kvm_segment *var, int seg)
853 struct vmcb_seg *s = svm_seg(vcpu, seg);
856 var->limit = s->limit;
857 var->selector = s->selector;
858 var->type = s->attrib & SVM_SELECTOR_TYPE_MASK;
859 var->s = (s->attrib >> SVM_SELECTOR_S_SHIFT) & 1;
860 var->dpl = (s->attrib >> SVM_SELECTOR_DPL_SHIFT) & 3;
861 var->present = (s->attrib >> SVM_SELECTOR_P_SHIFT) & 1;
862 var->avl = (s->attrib >> SVM_SELECTOR_AVL_SHIFT) & 1;
863 var->l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1;
864 var->db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1;
865 var->g = (s->attrib >> SVM_SELECTOR_G_SHIFT) & 1;
867 /* AMD's VMCB does not have an explicit unusable field, so emulate it
868 * for cross vendor migration purposes by "not present"
870 var->unusable = !var->present || (var->type == 0);
875 * SVM always stores 0 for the 'G' bit in the CS selector in
876 * the VMCB on a VMEXIT. This hurts cross-vendor migration:
877 * Intel's VMENTRY has a check on the 'G' bit.
879 var->g = s->limit > 0xfffff;
883 * Work around a bug where the busy flag in the tr selector
893 * The accessed bit must always be set in the segment
894 * descriptor cache, although it can be cleared in the
895 * descriptor, the cached bit always remains at 1. Since
896 * Intel has a check on this, set it here to support
897 * cross-vendor migration.
903 /* On AMD CPUs sometimes the DB bit in the segment
904 * descriptor is left as 1, although the whole segment has
905 * been made unusable. Clear it here to pass an Intel VMX
906 * entry check when cross vendor migrating.
914 static int svm_get_cpl(struct kvm_vcpu *vcpu)
916 struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save;
921 static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
923 struct vcpu_svm *svm = to_svm(vcpu);
925 dt->limit = svm->vmcb->save.idtr.limit;
926 dt->base = svm->vmcb->save.idtr.base;
929 static void svm_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
931 struct vcpu_svm *svm = to_svm(vcpu);
933 svm->vmcb->save.idtr.limit = dt->limit;
934 svm->vmcb->save.idtr.base = dt->base ;
937 static void svm_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
939 struct vcpu_svm *svm = to_svm(vcpu);
941 dt->limit = svm->vmcb->save.gdtr.limit;
942 dt->base = svm->vmcb->save.gdtr.base;
945 static void svm_set_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
947 struct vcpu_svm *svm = to_svm(vcpu);
949 svm->vmcb->save.gdtr.limit = dt->limit;
950 svm->vmcb->save.gdtr.base = dt->base ;
953 static void svm_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)
957 static void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
959 struct vcpu_svm *svm = to_svm(vcpu);
962 if (vcpu->arch.shadow_efer & EFER_LME) {
963 if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) {
964 vcpu->arch.shadow_efer |= EFER_LMA;
965 svm->vmcb->save.efer |= EFER_LMA | EFER_LME;
968 if (is_paging(vcpu) && !(cr0 & X86_CR0_PG)) {
969 vcpu->arch.shadow_efer &= ~EFER_LMA;
970 svm->vmcb->save.efer &= ~(EFER_LMA | EFER_LME);
977 if ((vcpu->arch.cr0 & X86_CR0_TS) && !(cr0 & X86_CR0_TS)) {
978 svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR);
979 vcpu->fpu_active = 1;
982 vcpu->arch.cr0 = cr0;
983 cr0 |= X86_CR0_PG | X86_CR0_WP;
984 if (!vcpu->fpu_active) {
985 svm->vmcb->control.intercept_exceptions |= (1 << NM_VECTOR);
990 * re-enable caching here because the QEMU bios
991 * does not do it - this results in some delay at
994 cr0 &= ~(X86_CR0_CD | X86_CR0_NW);
995 svm->vmcb->save.cr0 = cr0;
998 static void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
1000 unsigned long host_cr4_mce = read_cr4() & X86_CR4_MCE;
1001 unsigned long old_cr4 = to_svm(vcpu)->vmcb->save.cr4;
1003 if (npt_enabled && ((old_cr4 ^ cr4) & X86_CR4_PGE))
1004 force_new_asid(vcpu);
1006 vcpu->arch.cr4 = cr4;
1009 cr4 |= host_cr4_mce;
1010 to_svm(vcpu)->vmcb->save.cr4 = cr4;
1013 static void svm_set_segment(struct kvm_vcpu *vcpu,
1014 struct kvm_segment *var, int seg)
1016 struct vcpu_svm *svm = to_svm(vcpu);
1017 struct vmcb_seg *s = svm_seg(vcpu, seg);
1019 s->base = var->base;
1020 s->limit = var->limit;
1021 s->selector = var->selector;
1025 s->attrib = (var->type & SVM_SELECTOR_TYPE_MASK);
1026 s->attrib |= (var->s & 1) << SVM_SELECTOR_S_SHIFT;
1027 s->attrib |= (var->dpl & 3) << SVM_SELECTOR_DPL_SHIFT;
1028 s->attrib |= (var->present & 1) << SVM_SELECTOR_P_SHIFT;
1029 s->attrib |= (var->avl & 1) << SVM_SELECTOR_AVL_SHIFT;
1030 s->attrib |= (var->l & 1) << SVM_SELECTOR_L_SHIFT;
1031 s->attrib |= (var->db & 1) << SVM_SELECTOR_DB_SHIFT;
1032 s->attrib |= (var->g & 1) << SVM_SELECTOR_G_SHIFT;
1034 if (seg == VCPU_SREG_CS)
1036 = (svm->vmcb->save.cs.attrib
1037 >> SVM_SELECTOR_DPL_SHIFT) & 3;
1041 static void update_db_intercept(struct kvm_vcpu *vcpu)
1043 struct vcpu_svm *svm = to_svm(vcpu);
1045 svm->vmcb->control.intercept_exceptions &=
1046 ~((1 << DB_VECTOR) | (1 << BP_VECTOR));
1048 if (vcpu->arch.singlestep)
1049 svm->vmcb->control.intercept_exceptions |= (1 << DB_VECTOR);
1051 if (vcpu->guest_debug & KVM_GUESTDBG_ENABLE) {
1052 if (vcpu->guest_debug &
1053 (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
1054 svm->vmcb->control.intercept_exceptions |=
1056 if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
1057 svm->vmcb->control.intercept_exceptions |=
1060 vcpu->guest_debug = 0;
1063 static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
1065 int old_debug = vcpu->guest_debug;
1066 struct vcpu_svm *svm = to_svm(vcpu);
1068 vcpu->guest_debug = dbg->control;
1070 update_db_intercept(vcpu);
1072 if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
1073 svm->vmcb->save.dr7 = dbg->arch.debugreg[7];
1075 svm->vmcb->save.dr7 = vcpu->arch.dr7;
1077 if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
1078 svm->vmcb->save.rflags |= X86_EFLAGS_TF | X86_EFLAGS_RF;
1079 else if (old_debug & KVM_GUESTDBG_SINGLESTEP)
1080 svm->vmcb->save.rflags &= ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
1085 static void load_host_msrs(struct kvm_vcpu *vcpu)
1087 #ifdef CONFIG_X86_64
1088 wrmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base);
1092 static void save_host_msrs(struct kvm_vcpu *vcpu)
1094 #ifdef CONFIG_X86_64
1095 rdmsrl(MSR_GS_BASE, to_svm(vcpu)->host_gs_base);
1099 static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *svm_data)
1101 if (svm_data->next_asid > svm_data->max_asid) {
1102 ++svm_data->asid_generation;
1103 svm_data->next_asid = 1;
1104 svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID;
1107 svm->asid_generation = svm_data->asid_generation;
1108 svm->vmcb->control.asid = svm_data->next_asid++;
1111 static unsigned long svm_get_dr(struct kvm_vcpu *vcpu, int dr)
1113 struct vcpu_svm *svm = to_svm(vcpu);
1118 val = vcpu->arch.db[dr];
1121 if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
1122 val = vcpu->arch.dr6;
1124 val = svm->vmcb->save.dr6;
1127 if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)
1128 val = vcpu->arch.dr7;
1130 val = svm->vmcb->save.dr7;
1139 static void svm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long value,
1142 struct vcpu_svm *svm = to_svm(vcpu);
1148 vcpu->arch.db[dr] = value;
1149 if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP))
1150 vcpu->arch.eff_db[dr] = value;
1153 if (vcpu->arch.cr4 & X86_CR4_DE)
1154 *exception = UD_VECTOR;
1157 if (value & 0xffffffff00000000ULL) {
1158 *exception = GP_VECTOR;
1161 vcpu->arch.dr6 = (value & DR6_VOLATILE) | DR6_FIXED_1;
1164 if (value & 0xffffffff00000000ULL) {
1165 *exception = GP_VECTOR;
1168 vcpu->arch.dr7 = (value & DR7_VOLATILE) | DR7_FIXED_1;
1169 if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)) {
1170 svm->vmcb->save.dr7 = vcpu->arch.dr7;
1171 vcpu->arch.switch_db_regs = (value & DR7_BP_EN_MASK);
1175 /* FIXME: Possible case? */
1176 printk(KERN_DEBUG "%s: unexpected dr %u\n",
1178 *exception = UD_VECTOR;
1183 static int pf_interception(struct vcpu_svm *svm)
1188 fault_address = svm->vmcb->control.exit_info_2;
1189 error_code = svm->vmcb->control.exit_info_1;
1191 trace_kvm_page_fault(fault_address, error_code);
1192 if (!npt_enabled && kvm_event_needs_reinjection(&svm->vcpu))
1193 kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address);
1194 return kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code);
1197 static int db_interception(struct vcpu_svm *svm)
1199 struct kvm_run *kvm_run = svm->vcpu.run;
1201 if (!(svm->vcpu.guest_debug &
1202 (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP)) &&
1203 !svm->vcpu.arch.singlestep) {
1204 kvm_queue_exception(&svm->vcpu, DB_VECTOR);
1208 if (svm->vcpu.arch.singlestep) {
1209 svm->vcpu.arch.singlestep = false;
1210 if (!(svm->vcpu.guest_debug & KVM_GUESTDBG_SINGLESTEP))
1211 svm->vmcb->save.rflags &=
1212 ~(X86_EFLAGS_TF | X86_EFLAGS_RF);
1213 update_db_intercept(&svm->vcpu);
1216 if (svm->vcpu.guest_debug &
1217 (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP)){
1218 kvm_run->exit_reason = KVM_EXIT_DEBUG;
1219 kvm_run->debug.arch.pc =
1220 svm->vmcb->save.cs.base + svm->vmcb->save.rip;
1221 kvm_run->debug.arch.exception = DB_VECTOR;
1228 static int bp_interception(struct vcpu_svm *svm)
1230 struct kvm_run *kvm_run = svm->vcpu.run;
1232 kvm_run->exit_reason = KVM_EXIT_DEBUG;
1233 kvm_run->debug.arch.pc = svm->vmcb->save.cs.base + svm->vmcb->save.rip;
1234 kvm_run->debug.arch.exception = BP_VECTOR;
1238 static int ud_interception(struct vcpu_svm *svm)
1242 er = emulate_instruction(&svm->vcpu, 0, 0, EMULTYPE_TRAP_UD);
1243 if (er != EMULATE_DONE)
1244 kvm_queue_exception(&svm->vcpu, UD_VECTOR);
1248 static int nm_interception(struct vcpu_svm *svm)
1250 svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR);
1251 if (!(svm->vcpu.arch.cr0 & X86_CR0_TS))
1252 svm->vmcb->save.cr0 &= ~X86_CR0_TS;
1253 svm->vcpu.fpu_active = 1;
1258 static int mc_interception(struct vcpu_svm *svm)
1261 * On an #MC intercept the MCE handler is not called automatically in
1262 * the host. So do it by hand here.
1266 /* not sure if we ever come back to this point */
1271 static int shutdown_interception(struct vcpu_svm *svm)
1273 struct kvm_run *kvm_run = svm->vcpu.run;
1276 * VMCB is undefined after a SHUTDOWN intercept
1277 * so reinitialize it.
1279 clear_page(svm->vmcb);
1282 kvm_run->exit_reason = KVM_EXIT_SHUTDOWN;
1286 static int io_interception(struct vcpu_svm *svm)
1288 u32 io_info = svm->vmcb->control.exit_info_1; /* address size bug? */
1289 int size, in, string;
1292 ++svm->vcpu.stat.io_exits;
1294 svm->next_rip = svm->vmcb->control.exit_info_2;
1296 string = (io_info & SVM_IOIO_STR_MASK) != 0;
1299 if (emulate_instruction(&svm->vcpu,
1300 0, 0, 0) == EMULATE_DO_MMIO)
1305 in = (io_info & SVM_IOIO_TYPE_MASK) != 0;
1306 port = io_info >> 16;
1307 size = (io_info & SVM_IOIO_SIZE_MASK) >> SVM_IOIO_SIZE_SHIFT;
1309 skip_emulated_instruction(&svm->vcpu);
1310 return kvm_emulate_pio(&svm->vcpu, in, size, port);
1313 static int nmi_interception(struct vcpu_svm *svm)
1318 static int intr_interception(struct vcpu_svm *svm)
1320 ++svm->vcpu.stat.irq_exits;
1324 static int nop_on_interception(struct vcpu_svm *svm)
1329 static int halt_interception(struct vcpu_svm *svm)
1331 svm->next_rip = kvm_rip_read(&svm->vcpu) + 1;
1332 skip_emulated_instruction(&svm->vcpu);
1333 return kvm_emulate_halt(&svm->vcpu);
1336 static int vmmcall_interception(struct vcpu_svm *svm)
1338 svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
1339 skip_emulated_instruction(&svm->vcpu);
1340 kvm_emulate_hypercall(&svm->vcpu);
1344 static int nested_svm_check_permissions(struct vcpu_svm *svm)
1346 if (!(svm->vcpu.arch.shadow_efer & EFER_SVME)
1347 || !is_paging(&svm->vcpu)) {
1348 kvm_queue_exception(&svm->vcpu, UD_VECTOR);
1352 if (svm->vmcb->save.cpl) {
1353 kvm_inject_gp(&svm->vcpu, 0);
1360 static int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
1361 bool has_error_code, u32 error_code)
1363 if (!is_nested(svm))
1366 svm->vmcb->control.exit_code = SVM_EXIT_EXCP_BASE + nr;
1367 svm->vmcb->control.exit_code_hi = 0;
1368 svm->vmcb->control.exit_info_1 = error_code;
1369 svm->vmcb->control.exit_info_2 = svm->vcpu.arch.cr2;
1371 return nested_svm_exit_handled(svm);
1374 static inline int nested_svm_intr(struct vcpu_svm *svm)
1376 if (!is_nested(svm))
1379 if (!(svm->vcpu.arch.hflags & HF_VINTR_MASK))
1382 if (!(svm->vcpu.arch.hflags & HF_HIF_MASK))
1385 svm->vmcb->control.exit_code = SVM_EXIT_INTR;
1387 if (nested_svm_exit_handled(svm)) {
1388 nsvm_printk("VMexit -> INTR\n");
1395 static void *nested_svm_map(struct vcpu_svm *svm, u64 gpa, enum km_type idx)
1399 down_read(¤t->mm->mmap_sem);
1400 page = gfn_to_page(svm->vcpu.kvm, gpa >> PAGE_SHIFT);
1401 up_read(¤t->mm->mmap_sem);
1403 if (is_error_page(page))
1406 return kmap_atomic(page, idx);
1409 kvm_release_page_clean(page);
1410 kvm_inject_gp(&svm->vcpu, 0);
1415 static void nested_svm_unmap(void *addr, enum km_type idx)
1422 page = kmap_atomic_to_page(addr);
1424 kunmap_atomic(addr, idx);
1425 kvm_release_page_dirty(page);
1428 static bool nested_svm_exit_handled_msr(struct vcpu_svm *svm)
1430 u32 param = svm->vmcb->control.exit_info_1 & 1;
1431 u32 msr = svm->vcpu.arch.regs[VCPU_REGS_RCX];
1436 if (!(svm->nested.intercept & (1ULL << INTERCEPT_MSR_PROT)))
1439 msrpm = nested_svm_map(svm, svm->nested.vmcb_msrpm, KM_USER0);
1449 case 0xc0000000 ... 0xc0001fff:
1450 t0 = (8192 + msr - 0xc0000000) * 2;
1454 case 0xc0010000 ... 0xc0011fff:
1455 t0 = (16384 + msr - 0xc0010000) * 2;
1464 ret = msrpm[t1] & ((1 << param) << t0);
1467 nested_svm_unmap(msrpm, KM_USER0);
1472 static int nested_svm_exit_special(struct vcpu_svm *svm)
1474 u32 exit_code = svm->vmcb->control.exit_code;
1476 switch (exit_code) {
1479 return NESTED_EXIT_HOST;
1480 /* For now we are always handling NPFs when using them */
1483 return NESTED_EXIT_HOST;
1485 /* When we're shadowing, trap PFs */
1486 case SVM_EXIT_EXCP_BASE + PF_VECTOR:
1488 return NESTED_EXIT_HOST;
1494 return NESTED_EXIT_CONTINUE;
1498 * If this function returns true, this #vmexit was already handled
1500 static int nested_svm_exit_handled(struct vcpu_svm *svm)
1502 u32 exit_code = svm->vmcb->control.exit_code;
1503 int vmexit = NESTED_EXIT_HOST;
1505 switch (exit_code) {
1507 vmexit = nested_svm_exit_handled_msr(svm);
1509 case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR8: {
1510 u32 cr_bits = 1 << (exit_code - SVM_EXIT_READ_CR0);
1511 if (svm->nested.intercept_cr_read & cr_bits)
1512 vmexit = NESTED_EXIT_DONE;
1515 case SVM_EXIT_WRITE_CR0 ... SVM_EXIT_WRITE_CR8: {
1516 u32 cr_bits = 1 << (exit_code - SVM_EXIT_WRITE_CR0);
1517 if (svm->nested.intercept_cr_write & cr_bits)
1518 vmexit = NESTED_EXIT_DONE;
1521 case SVM_EXIT_READ_DR0 ... SVM_EXIT_READ_DR7: {
1522 u32 dr_bits = 1 << (exit_code - SVM_EXIT_READ_DR0);
1523 if (svm->nested.intercept_dr_read & dr_bits)
1524 vmexit = NESTED_EXIT_DONE;
1527 case SVM_EXIT_WRITE_DR0 ... SVM_EXIT_WRITE_DR7: {
1528 u32 dr_bits = 1 << (exit_code - SVM_EXIT_WRITE_DR0);
1529 if (svm->nested.intercept_dr_write & dr_bits)
1530 vmexit = NESTED_EXIT_DONE;
1533 case SVM_EXIT_EXCP_BASE ... SVM_EXIT_EXCP_BASE + 0x1f: {
1534 u32 excp_bits = 1 << (exit_code - SVM_EXIT_EXCP_BASE);
1535 if (svm->nested.intercept_exceptions & excp_bits)
1536 vmexit = NESTED_EXIT_DONE;
1540 u64 exit_bits = 1ULL << (exit_code - SVM_EXIT_INTR);
1541 nsvm_printk("exit code: 0x%x\n", exit_code);
1542 if (svm->nested.intercept & exit_bits)
1543 vmexit = NESTED_EXIT_DONE;
1547 if (vmexit == NESTED_EXIT_DONE) {
1548 nsvm_printk("#VMEXIT reason=%04x\n", exit_code);
1549 nested_svm_vmexit(svm);
1555 static inline void copy_vmcb_control_area(struct vmcb *dst_vmcb, struct vmcb *from_vmcb)
1557 struct vmcb_control_area *dst = &dst_vmcb->control;
1558 struct vmcb_control_area *from = &from_vmcb->control;
1560 dst->intercept_cr_read = from->intercept_cr_read;
1561 dst->intercept_cr_write = from->intercept_cr_write;
1562 dst->intercept_dr_read = from->intercept_dr_read;
1563 dst->intercept_dr_write = from->intercept_dr_write;
1564 dst->intercept_exceptions = from->intercept_exceptions;
1565 dst->intercept = from->intercept;
1566 dst->iopm_base_pa = from->iopm_base_pa;
1567 dst->msrpm_base_pa = from->msrpm_base_pa;
1568 dst->tsc_offset = from->tsc_offset;
1569 dst->asid = from->asid;
1570 dst->tlb_ctl = from->tlb_ctl;
1571 dst->int_ctl = from->int_ctl;
1572 dst->int_vector = from->int_vector;
1573 dst->int_state = from->int_state;
1574 dst->exit_code = from->exit_code;
1575 dst->exit_code_hi = from->exit_code_hi;
1576 dst->exit_info_1 = from->exit_info_1;
1577 dst->exit_info_2 = from->exit_info_2;
1578 dst->exit_int_info = from->exit_int_info;
1579 dst->exit_int_info_err = from->exit_int_info_err;
1580 dst->nested_ctl = from->nested_ctl;
1581 dst->event_inj = from->event_inj;
1582 dst->event_inj_err = from->event_inj_err;
1583 dst->nested_cr3 = from->nested_cr3;
1584 dst->lbr_ctl = from->lbr_ctl;
1587 static int nested_svm_vmexit(struct vcpu_svm *svm)
1589 struct vmcb *nested_vmcb;
1590 struct vmcb *hsave = svm->nested.hsave;
1591 struct vmcb *vmcb = svm->vmcb;
1593 nested_vmcb = nested_svm_map(svm, svm->nested.vmcb, KM_USER0);
1597 /* Give the current vmcb to the guest */
1600 nested_vmcb->save.es = vmcb->save.es;
1601 nested_vmcb->save.cs = vmcb->save.cs;
1602 nested_vmcb->save.ss = vmcb->save.ss;
1603 nested_vmcb->save.ds = vmcb->save.ds;
1604 nested_vmcb->save.gdtr = vmcb->save.gdtr;
1605 nested_vmcb->save.idtr = vmcb->save.idtr;
1607 nested_vmcb->save.cr3 = vmcb->save.cr3;
1608 nested_vmcb->save.cr2 = vmcb->save.cr2;
1609 nested_vmcb->save.rflags = vmcb->save.rflags;
1610 nested_vmcb->save.rip = vmcb->save.rip;
1611 nested_vmcb->save.rsp = vmcb->save.rsp;
1612 nested_vmcb->save.rax = vmcb->save.rax;
1613 nested_vmcb->save.dr7 = vmcb->save.dr7;
1614 nested_vmcb->save.dr6 = vmcb->save.dr6;
1615 nested_vmcb->save.cpl = vmcb->save.cpl;
1617 nested_vmcb->control.int_ctl = vmcb->control.int_ctl;
1618 nested_vmcb->control.int_vector = vmcb->control.int_vector;
1619 nested_vmcb->control.int_state = vmcb->control.int_state;
1620 nested_vmcb->control.exit_code = vmcb->control.exit_code;
1621 nested_vmcb->control.exit_code_hi = vmcb->control.exit_code_hi;
1622 nested_vmcb->control.exit_info_1 = vmcb->control.exit_info_1;
1623 nested_vmcb->control.exit_info_2 = vmcb->control.exit_info_2;
1624 nested_vmcb->control.exit_int_info = vmcb->control.exit_int_info;
1625 nested_vmcb->control.exit_int_info_err = vmcb->control.exit_int_info_err;
1626 nested_vmcb->control.tlb_ctl = 0;
1627 nested_vmcb->control.event_inj = 0;
1628 nested_vmcb->control.event_inj_err = 0;
1630 /* We always set V_INTR_MASKING and remember the old value in hflags */
1631 if (!(svm->vcpu.arch.hflags & HF_VINTR_MASK))
1632 nested_vmcb->control.int_ctl &= ~V_INTR_MASKING_MASK;
1634 /* Restore the original control entries */
1635 copy_vmcb_control_area(vmcb, hsave);
1637 /* Kill any pending exceptions */
1638 if (svm->vcpu.arch.exception.pending == true)
1639 nsvm_printk("WARNING: Pending Exception\n");
1641 kvm_clear_exception_queue(&svm->vcpu);
1642 kvm_clear_interrupt_queue(&svm->vcpu);
1644 /* Restore selected save entries */
1645 svm->vmcb->save.es = hsave->save.es;
1646 svm->vmcb->save.cs = hsave->save.cs;
1647 svm->vmcb->save.ss = hsave->save.ss;
1648 svm->vmcb->save.ds = hsave->save.ds;
1649 svm->vmcb->save.gdtr = hsave->save.gdtr;
1650 svm->vmcb->save.idtr = hsave->save.idtr;
1651 svm->vmcb->save.rflags = hsave->save.rflags;
1652 svm_set_efer(&svm->vcpu, hsave->save.efer);
1653 svm_set_cr0(&svm->vcpu, hsave->save.cr0 | X86_CR0_PE);
1654 svm_set_cr4(&svm->vcpu, hsave->save.cr4);
1656 svm->vmcb->save.cr3 = hsave->save.cr3;
1657 svm->vcpu.arch.cr3 = hsave->save.cr3;
1659 kvm_set_cr3(&svm->vcpu, hsave->save.cr3);
1661 kvm_register_write(&svm->vcpu, VCPU_REGS_RAX, hsave->save.rax);
1662 kvm_register_write(&svm->vcpu, VCPU_REGS_RSP, hsave->save.rsp);
1663 kvm_register_write(&svm->vcpu, VCPU_REGS_RIP, hsave->save.rip);
1664 svm->vmcb->save.dr7 = 0;
1665 svm->vmcb->save.cpl = 0;
1666 svm->vmcb->control.exit_int_info = 0;
1668 /* Exit nested SVM mode */
1669 svm->nested.vmcb = 0;
1671 nested_svm_unmap(nested_vmcb, KM_USER0);
1673 kvm_mmu_reset_context(&svm->vcpu);
1674 kvm_mmu_load(&svm->vcpu);
1679 static bool nested_svm_vmrun_msrpm(struct vcpu_svm *svm)
1684 nested_msrpm = nested_svm_map(svm, svm->nested.vmcb_msrpm, KM_USER0);
1688 for (i=0; i< PAGE_SIZE * (1 << MSRPM_ALLOC_ORDER) / 4; i++)
1689 svm->nested.msrpm[i] = svm->msrpm[i] | nested_msrpm[i];
1691 svm->vmcb->control.msrpm_base_pa = __pa(svm->nested.msrpm);
1693 nested_svm_unmap(nested_msrpm, KM_USER0);
1698 static bool nested_svm_vmrun(struct vcpu_svm *svm)
1700 struct vmcb *nested_vmcb;
1701 struct vmcb *hsave = svm->nested.hsave;
1702 struct vmcb *vmcb = svm->vmcb;
1704 nested_vmcb = nested_svm_map(svm, svm->vmcb->save.rax, KM_USER0);
1708 /* nested_vmcb is our indicator if nested SVM is activated */
1709 svm->nested.vmcb = svm->vmcb->save.rax;
1711 /* Clear internal status */
1712 kvm_clear_exception_queue(&svm->vcpu);
1713 kvm_clear_interrupt_queue(&svm->vcpu);
1715 /* Save the old vmcb, so we don't need to pick what we save, but
1716 can restore everything when a VMEXIT occurs */
1717 hsave->save.es = vmcb->save.es;
1718 hsave->save.cs = vmcb->save.cs;
1719 hsave->save.ss = vmcb->save.ss;
1720 hsave->save.ds = vmcb->save.ds;
1721 hsave->save.gdtr = vmcb->save.gdtr;
1722 hsave->save.idtr = vmcb->save.idtr;
1723 hsave->save.efer = svm->vcpu.arch.shadow_efer;
1724 hsave->save.cr0 = svm->vcpu.arch.cr0;
1725 hsave->save.cr4 = svm->vcpu.arch.cr4;
1726 hsave->save.rflags = vmcb->save.rflags;
1727 hsave->save.rip = svm->next_rip;
1728 hsave->save.rsp = vmcb->save.rsp;
1729 hsave->save.rax = vmcb->save.rax;
1731 hsave->save.cr3 = vmcb->save.cr3;
1733 hsave->save.cr3 = svm->vcpu.arch.cr3;
1735 copy_vmcb_control_area(hsave, vmcb);
1737 if (svm->vmcb->save.rflags & X86_EFLAGS_IF)
1738 svm->vcpu.arch.hflags |= HF_HIF_MASK;
1740 svm->vcpu.arch.hflags &= ~HF_HIF_MASK;
1742 /* Load the nested guest state */
1743 svm->vmcb->save.es = nested_vmcb->save.es;
1744 svm->vmcb->save.cs = nested_vmcb->save.cs;
1745 svm->vmcb->save.ss = nested_vmcb->save.ss;
1746 svm->vmcb->save.ds = nested_vmcb->save.ds;
1747 svm->vmcb->save.gdtr = nested_vmcb->save.gdtr;
1748 svm->vmcb->save.idtr = nested_vmcb->save.idtr;
1749 svm->vmcb->save.rflags = nested_vmcb->save.rflags;
1750 svm_set_efer(&svm->vcpu, nested_vmcb->save.efer);
1751 svm_set_cr0(&svm->vcpu, nested_vmcb->save.cr0);
1752 svm_set_cr4(&svm->vcpu, nested_vmcb->save.cr4);
1754 svm->vmcb->save.cr3 = nested_vmcb->save.cr3;
1755 svm->vcpu.arch.cr3 = nested_vmcb->save.cr3;
1757 kvm_set_cr3(&svm->vcpu, nested_vmcb->save.cr3);
1758 kvm_mmu_reset_context(&svm->vcpu);
1760 svm->vmcb->save.cr2 = svm->vcpu.arch.cr2 = nested_vmcb->save.cr2;
1761 kvm_register_write(&svm->vcpu, VCPU_REGS_RAX, nested_vmcb->save.rax);
1762 kvm_register_write(&svm->vcpu, VCPU_REGS_RSP, nested_vmcb->save.rsp);
1763 kvm_register_write(&svm->vcpu, VCPU_REGS_RIP, nested_vmcb->save.rip);
1764 /* In case we don't even reach vcpu_run, the fields are not updated */
1765 svm->vmcb->save.rax = nested_vmcb->save.rax;
1766 svm->vmcb->save.rsp = nested_vmcb->save.rsp;
1767 svm->vmcb->save.rip = nested_vmcb->save.rip;
1768 svm->vmcb->save.dr7 = nested_vmcb->save.dr7;
1769 svm->vmcb->save.dr6 = nested_vmcb->save.dr6;
1770 svm->vmcb->save.cpl = nested_vmcb->save.cpl;
1772 /* We don't want a nested guest to be more powerful than the guest,
1773 so all intercepts are ORed */
1774 svm->vmcb->control.intercept_cr_read |=
1775 nested_vmcb->control.intercept_cr_read;
1776 svm->vmcb->control.intercept_cr_write |=
1777 nested_vmcb->control.intercept_cr_write;
1778 svm->vmcb->control.intercept_dr_read |=
1779 nested_vmcb->control.intercept_dr_read;
1780 svm->vmcb->control.intercept_dr_write |=
1781 nested_vmcb->control.intercept_dr_write;
1782 svm->vmcb->control.intercept_exceptions |=
1783 nested_vmcb->control.intercept_exceptions;
1785 svm->vmcb->control.intercept |= nested_vmcb->control.intercept;
1787 svm->nested.vmcb_msrpm = nested_vmcb->control.msrpm_base_pa;
1789 /* cache intercepts */
1790 svm->nested.intercept_cr_read = nested_vmcb->control.intercept_cr_read;
1791 svm->nested.intercept_cr_write = nested_vmcb->control.intercept_cr_write;
1792 svm->nested.intercept_dr_read = nested_vmcb->control.intercept_dr_read;
1793 svm->nested.intercept_dr_write = nested_vmcb->control.intercept_dr_write;
1794 svm->nested.intercept_exceptions = nested_vmcb->control.intercept_exceptions;
1795 svm->nested.intercept = nested_vmcb->control.intercept;
1797 force_new_asid(&svm->vcpu);
1798 svm->vmcb->control.exit_int_info = nested_vmcb->control.exit_int_info;
1799 svm->vmcb->control.exit_int_info_err = nested_vmcb->control.exit_int_info_err;
1800 svm->vmcb->control.int_ctl = nested_vmcb->control.int_ctl | V_INTR_MASKING_MASK;
1801 if (nested_vmcb->control.int_ctl & V_IRQ_MASK) {
1802 nsvm_printk("nSVM Injecting Interrupt: 0x%x\n",
1803 nested_vmcb->control.int_ctl);
1805 if (nested_vmcb->control.int_ctl & V_INTR_MASKING_MASK)
1806 svm->vcpu.arch.hflags |= HF_VINTR_MASK;
1808 svm->vcpu.arch.hflags &= ~HF_VINTR_MASK;
1810 nsvm_printk("nSVM exit_int_info: 0x%x | int_state: 0x%x\n",
1811 nested_vmcb->control.exit_int_info,
1812 nested_vmcb->control.int_state);
1814 svm->vmcb->control.int_vector = nested_vmcb->control.int_vector;
1815 svm->vmcb->control.int_state = nested_vmcb->control.int_state;
1816 svm->vmcb->control.tsc_offset += nested_vmcb->control.tsc_offset;
1817 if (nested_vmcb->control.event_inj & SVM_EVTINJ_VALID)
1818 nsvm_printk("Injecting Event: 0x%x\n",
1819 nested_vmcb->control.event_inj);
1820 svm->vmcb->control.event_inj = nested_vmcb->control.event_inj;
1821 svm->vmcb->control.event_inj_err = nested_vmcb->control.event_inj_err;
1823 nested_svm_unmap(nested_vmcb, KM_USER0);
1830 static void nested_svm_vmloadsave(struct vmcb *from_vmcb, struct vmcb *to_vmcb)
1832 to_vmcb->save.fs = from_vmcb->save.fs;
1833 to_vmcb->save.gs = from_vmcb->save.gs;
1834 to_vmcb->save.tr = from_vmcb->save.tr;
1835 to_vmcb->save.ldtr = from_vmcb->save.ldtr;
1836 to_vmcb->save.kernel_gs_base = from_vmcb->save.kernel_gs_base;
1837 to_vmcb->save.star = from_vmcb->save.star;
1838 to_vmcb->save.lstar = from_vmcb->save.lstar;
1839 to_vmcb->save.cstar = from_vmcb->save.cstar;
1840 to_vmcb->save.sfmask = from_vmcb->save.sfmask;
1841 to_vmcb->save.sysenter_cs = from_vmcb->save.sysenter_cs;
1842 to_vmcb->save.sysenter_esp = from_vmcb->save.sysenter_esp;
1843 to_vmcb->save.sysenter_eip = from_vmcb->save.sysenter_eip;
1846 static int vmload_interception(struct vcpu_svm *svm)
1848 struct vmcb *nested_vmcb;
1850 if (nested_svm_check_permissions(svm))
1853 svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
1854 skip_emulated_instruction(&svm->vcpu);
1856 nested_vmcb = nested_svm_map(svm, svm->vmcb->save.rax, KM_USER0);
1860 nested_svm_vmloadsave(nested_vmcb, svm->vmcb);
1861 nested_svm_unmap(nested_vmcb, KM_USER0);
1866 static int vmsave_interception(struct vcpu_svm *svm)
1868 struct vmcb *nested_vmcb;
1870 if (nested_svm_check_permissions(svm))
1873 svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
1874 skip_emulated_instruction(&svm->vcpu);
1876 nested_vmcb = nested_svm_map(svm, svm->vmcb->save.rax, KM_USER0);
1880 nested_svm_vmloadsave(svm->vmcb, nested_vmcb);
1881 nested_svm_unmap(nested_vmcb, KM_USER0);
1886 static int vmrun_interception(struct vcpu_svm *svm)
1888 nsvm_printk("VMrun\n");
1890 if (nested_svm_check_permissions(svm))
1893 svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
1894 skip_emulated_instruction(&svm->vcpu);
1896 if (!nested_svm_vmrun(svm))
1899 if (!nested_svm_vmrun_msrpm(svm))
1906 svm->vmcb->control.exit_code = SVM_EXIT_ERR;
1907 svm->vmcb->control.exit_code_hi = 0;
1908 svm->vmcb->control.exit_info_1 = 0;
1909 svm->vmcb->control.exit_info_2 = 0;
1911 nested_svm_vmexit(svm);
1916 static int stgi_interception(struct vcpu_svm *svm)
1918 if (nested_svm_check_permissions(svm))
1921 svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
1922 skip_emulated_instruction(&svm->vcpu);
1929 static int clgi_interception(struct vcpu_svm *svm)
1931 if (nested_svm_check_permissions(svm))
1934 svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
1935 skip_emulated_instruction(&svm->vcpu);
1939 /* After a CLGI no interrupts should come */
1940 svm_clear_vintr(svm);
1941 svm->vmcb->control.int_ctl &= ~V_IRQ_MASK;
1946 static int invlpga_interception(struct vcpu_svm *svm)
1948 struct kvm_vcpu *vcpu = &svm->vcpu;
1949 nsvm_printk("INVLPGA\n");
1951 /* Let's treat INVLPGA the same as INVLPG (can be optimized!) */
1952 kvm_mmu_invlpg(vcpu, vcpu->arch.regs[VCPU_REGS_RAX]);
1954 svm->next_rip = kvm_rip_read(&svm->vcpu) + 3;
1955 skip_emulated_instruction(&svm->vcpu);
1959 static int invalid_op_interception(struct vcpu_svm *svm)
1961 kvm_queue_exception(&svm->vcpu, UD_VECTOR);
1965 static int task_switch_interception(struct vcpu_svm *svm)
1969 int int_type = svm->vmcb->control.exit_int_info &
1970 SVM_EXITINTINFO_TYPE_MASK;
1971 int int_vec = svm->vmcb->control.exit_int_info & SVM_EVTINJ_VEC_MASK;
1973 svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_TYPE_MASK;
1975 svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_VALID;
1977 tss_selector = (u16)svm->vmcb->control.exit_info_1;
1979 if (svm->vmcb->control.exit_info_2 &
1980 (1ULL << SVM_EXITINFOSHIFT_TS_REASON_IRET))
1981 reason = TASK_SWITCH_IRET;
1982 else if (svm->vmcb->control.exit_info_2 &
1983 (1ULL << SVM_EXITINFOSHIFT_TS_REASON_JMP))
1984 reason = TASK_SWITCH_JMP;
1986 reason = TASK_SWITCH_GATE;
1988 reason = TASK_SWITCH_CALL;
1990 if (reason == TASK_SWITCH_GATE) {
1992 case SVM_EXITINTINFO_TYPE_NMI:
1993 svm->vcpu.arch.nmi_injected = false;
1995 case SVM_EXITINTINFO_TYPE_EXEPT:
1996 kvm_clear_exception_queue(&svm->vcpu);
1998 case SVM_EXITINTINFO_TYPE_INTR:
1999 kvm_clear_interrupt_queue(&svm->vcpu);
2006 if (reason != TASK_SWITCH_GATE ||
2007 int_type == SVM_EXITINTINFO_TYPE_SOFT ||
2008 (int_type == SVM_EXITINTINFO_TYPE_EXEPT &&
2009 (int_vec == OF_VECTOR || int_vec == BP_VECTOR)))
2010 skip_emulated_instruction(&svm->vcpu);
2012 return kvm_task_switch(&svm->vcpu, tss_selector, reason);
2015 static int cpuid_interception(struct vcpu_svm *svm)
2017 svm->next_rip = kvm_rip_read(&svm->vcpu) + 2;
2018 kvm_emulate_cpuid(&svm->vcpu);
2022 static int iret_interception(struct vcpu_svm *svm)
2024 ++svm->vcpu.stat.nmi_window_exits;
2025 svm->vmcb->control.intercept &= ~(1UL << INTERCEPT_IRET);
2026 svm->vcpu.arch.hflags |= HF_IRET_MASK;
2030 static int invlpg_interception(struct vcpu_svm *svm)
2032 if (emulate_instruction(&svm->vcpu, 0, 0, 0) != EMULATE_DONE)
2033 pr_unimpl(&svm->vcpu, "%s: failed\n", __func__);
2037 static int emulate_on_interception(struct vcpu_svm *svm)
2039 if (emulate_instruction(&svm->vcpu, 0, 0, 0) != EMULATE_DONE)
2040 pr_unimpl(&svm->vcpu, "%s: failed\n", __func__);
2044 static int cr8_write_interception(struct vcpu_svm *svm)
2046 struct kvm_run *kvm_run = svm->vcpu.run;
2048 u8 cr8_prev = kvm_get_cr8(&svm->vcpu);
2049 /* instruction emulation calls kvm_set_cr8() */
2050 emulate_instruction(&svm->vcpu, 0, 0, 0);
2051 if (irqchip_in_kernel(svm->vcpu.kvm)) {
2052 svm->vmcb->control.intercept_cr_write &= ~INTERCEPT_CR8_MASK;
2055 if (cr8_prev <= kvm_get_cr8(&svm->vcpu))
2057 kvm_run->exit_reason = KVM_EXIT_SET_TPR;
2061 static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
2063 struct vcpu_svm *svm = to_svm(vcpu);
2066 case MSR_IA32_TSC: {
2070 tsc_offset = svm->nested.hsave->control.tsc_offset;
2072 tsc_offset = svm->vmcb->control.tsc_offset;
2074 *data = tsc_offset + native_read_tsc();
2078 *data = svm->vmcb->save.star;
2080 #ifdef CONFIG_X86_64
2082 *data = svm->vmcb->save.lstar;
2085 *data = svm->vmcb->save.cstar;
2087 case MSR_KERNEL_GS_BASE:
2088 *data = svm->vmcb->save.kernel_gs_base;
2090 case MSR_SYSCALL_MASK:
2091 *data = svm->vmcb->save.sfmask;
2094 case MSR_IA32_SYSENTER_CS:
2095 *data = svm->vmcb->save.sysenter_cs;
2097 case MSR_IA32_SYSENTER_EIP:
2098 *data = svm->sysenter_eip;
2100 case MSR_IA32_SYSENTER_ESP:
2101 *data = svm->sysenter_esp;
2103 /* Nobody will change the following 5 values in the VMCB so
2104 we can safely return them on rdmsr. They will always be 0
2105 until LBRV is implemented. */
2106 case MSR_IA32_DEBUGCTLMSR:
2107 *data = svm->vmcb->save.dbgctl;
2109 case MSR_IA32_LASTBRANCHFROMIP:
2110 *data = svm->vmcb->save.br_from;
2112 case MSR_IA32_LASTBRANCHTOIP:
2113 *data = svm->vmcb->save.br_to;
2115 case MSR_IA32_LASTINTFROMIP:
2116 *data = svm->vmcb->save.last_excp_from;
2118 case MSR_IA32_LASTINTTOIP:
2119 *data = svm->vmcb->save.last_excp_to;
2121 case MSR_VM_HSAVE_PA:
2122 *data = svm->nested.hsave_msr;
2127 case MSR_IA32_UCODE_REV:
2131 return kvm_get_msr_common(vcpu, ecx, data);
2136 static int rdmsr_interception(struct vcpu_svm *svm)
2138 u32 ecx = svm->vcpu.arch.regs[VCPU_REGS_RCX];
2141 if (svm_get_msr(&svm->vcpu, ecx, &data))
2142 kvm_inject_gp(&svm->vcpu, 0);
2144 trace_kvm_msr_read(ecx, data);
2146 svm->vcpu.arch.regs[VCPU_REGS_RAX] = data & 0xffffffff;
2147 svm->vcpu.arch.regs[VCPU_REGS_RDX] = data >> 32;
2148 svm->next_rip = kvm_rip_read(&svm->vcpu) + 2;
2149 skip_emulated_instruction(&svm->vcpu);
2154 static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data)
2156 struct vcpu_svm *svm = to_svm(vcpu);
2159 case MSR_IA32_TSC: {
2160 u64 tsc_offset = data - native_read_tsc();
2161 u64 g_tsc_offset = 0;
2163 if (is_nested(svm)) {
2164 g_tsc_offset = svm->vmcb->control.tsc_offset -
2165 svm->nested.hsave->control.tsc_offset;
2166 svm->nested.hsave->control.tsc_offset = tsc_offset;
2169 svm->vmcb->control.tsc_offset = tsc_offset + g_tsc_offset;
2174 svm->vmcb->save.star = data;
2176 #ifdef CONFIG_X86_64
2178 svm->vmcb->save.lstar = data;
2181 svm->vmcb->save.cstar = data;
2183 case MSR_KERNEL_GS_BASE:
2184 svm->vmcb->save.kernel_gs_base = data;
2186 case MSR_SYSCALL_MASK:
2187 svm->vmcb->save.sfmask = data;
2190 case MSR_IA32_SYSENTER_CS:
2191 svm->vmcb->save.sysenter_cs = data;
2193 case MSR_IA32_SYSENTER_EIP:
2194 svm->sysenter_eip = data;
2195 svm->vmcb->save.sysenter_eip = data;
2197 case MSR_IA32_SYSENTER_ESP:
2198 svm->sysenter_esp = data;
2199 svm->vmcb->save.sysenter_esp = data;
2201 case MSR_IA32_DEBUGCTLMSR:
2202 if (!svm_has(SVM_FEATURE_LBRV)) {
2203 pr_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTL 0x%llx, nop\n",
2207 if (data & DEBUGCTL_RESERVED_BITS)
2210 svm->vmcb->save.dbgctl = data;
2211 if (data & (1ULL<<0))
2212 svm_enable_lbrv(svm);
2214 svm_disable_lbrv(svm);
2216 case MSR_VM_HSAVE_PA:
2217 svm->nested.hsave_msr = data;
2221 pr_unimpl(vcpu, "unimplemented wrmsr: 0x%x data 0x%llx\n", ecx, data);
2224 return kvm_set_msr_common(vcpu, ecx, data);
2229 static int wrmsr_interception(struct vcpu_svm *svm)
2231 u32 ecx = svm->vcpu.arch.regs[VCPU_REGS_RCX];
2232 u64 data = (svm->vcpu.arch.regs[VCPU_REGS_RAX] & -1u)
2233 | ((u64)(svm->vcpu.arch.regs[VCPU_REGS_RDX] & -1u) << 32);
2235 trace_kvm_msr_write(ecx, data);
2237 svm->next_rip = kvm_rip_read(&svm->vcpu) + 2;
2238 if (svm_set_msr(&svm->vcpu, ecx, data))
2239 kvm_inject_gp(&svm->vcpu, 0);
2241 skip_emulated_instruction(&svm->vcpu);
2245 static int msr_interception(struct vcpu_svm *svm)
2247 if (svm->vmcb->control.exit_info_1)
2248 return wrmsr_interception(svm);
2250 return rdmsr_interception(svm);
2253 static int interrupt_window_interception(struct vcpu_svm *svm)
2255 struct kvm_run *kvm_run = svm->vcpu.run;
2257 svm_clear_vintr(svm);
2258 svm->vmcb->control.int_ctl &= ~V_IRQ_MASK;
2260 * If the user space waits to inject interrupts, exit as soon as
2263 if (!irqchip_in_kernel(svm->vcpu.kvm) &&
2264 kvm_run->request_interrupt_window &&
2265 !kvm_cpu_has_interrupt(&svm->vcpu)) {
2266 ++svm->vcpu.stat.irq_window_exits;
2267 kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
2274 static int (*svm_exit_handlers[])(struct vcpu_svm *svm) = {
2275 [SVM_EXIT_READ_CR0] = emulate_on_interception,
2276 [SVM_EXIT_READ_CR3] = emulate_on_interception,
2277 [SVM_EXIT_READ_CR4] = emulate_on_interception,
2278 [SVM_EXIT_READ_CR8] = emulate_on_interception,
2280 [SVM_EXIT_WRITE_CR0] = emulate_on_interception,
2281 [SVM_EXIT_WRITE_CR3] = emulate_on_interception,
2282 [SVM_EXIT_WRITE_CR4] = emulate_on_interception,
2283 [SVM_EXIT_WRITE_CR8] = cr8_write_interception,
2284 [SVM_EXIT_READ_DR0] = emulate_on_interception,
2285 [SVM_EXIT_READ_DR1] = emulate_on_interception,
2286 [SVM_EXIT_READ_DR2] = emulate_on_interception,
2287 [SVM_EXIT_READ_DR3] = emulate_on_interception,
2288 [SVM_EXIT_WRITE_DR0] = emulate_on_interception,
2289 [SVM_EXIT_WRITE_DR1] = emulate_on_interception,
2290 [SVM_EXIT_WRITE_DR2] = emulate_on_interception,
2291 [SVM_EXIT_WRITE_DR3] = emulate_on_interception,
2292 [SVM_EXIT_WRITE_DR5] = emulate_on_interception,
2293 [SVM_EXIT_WRITE_DR7] = emulate_on_interception,
2294 [SVM_EXIT_EXCP_BASE + DB_VECTOR] = db_interception,
2295 [SVM_EXIT_EXCP_BASE + BP_VECTOR] = bp_interception,
2296 [SVM_EXIT_EXCP_BASE + UD_VECTOR] = ud_interception,
2297 [SVM_EXIT_EXCP_BASE + PF_VECTOR] = pf_interception,
2298 [SVM_EXIT_EXCP_BASE + NM_VECTOR] = nm_interception,
2299 [SVM_EXIT_EXCP_BASE + MC_VECTOR] = mc_interception,
2300 [SVM_EXIT_INTR] = intr_interception,
2301 [SVM_EXIT_NMI] = nmi_interception,
2302 [SVM_EXIT_SMI] = nop_on_interception,
2303 [SVM_EXIT_INIT] = nop_on_interception,
2304 [SVM_EXIT_VINTR] = interrupt_window_interception,
2305 /* [SVM_EXIT_CR0_SEL_WRITE] = emulate_on_interception, */
2306 [SVM_EXIT_CPUID] = cpuid_interception,
2307 [SVM_EXIT_IRET] = iret_interception,
2308 [SVM_EXIT_INVD] = emulate_on_interception,
2309 [SVM_EXIT_HLT] = halt_interception,
2310 [SVM_EXIT_INVLPG] = invlpg_interception,
2311 [SVM_EXIT_INVLPGA] = invlpga_interception,
2312 [SVM_EXIT_IOIO] = io_interception,
2313 [SVM_EXIT_MSR] = msr_interception,
2314 [SVM_EXIT_TASK_SWITCH] = task_switch_interception,
2315 [SVM_EXIT_SHUTDOWN] = shutdown_interception,
2316 [SVM_EXIT_VMRUN] = vmrun_interception,
2317 [SVM_EXIT_VMMCALL] = vmmcall_interception,
2318 [SVM_EXIT_VMLOAD] = vmload_interception,
2319 [SVM_EXIT_VMSAVE] = vmsave_interception,
2320 [SVM_EXIT_STGI] = stgi_interception,
2321 [SVM_EXIT_CLGI] = clgi_interception,
2322 [SVM_EXIT_SKINIT] = invalid_op_interception,
2323 [SVM_EXIT_WBINVD] = emulate_on_interception,
2324 [SVM_EXIT_MONITOR] = invalid_op_interception,
2325 [SVM_EXIT_MWAIT] = invalid_op_interception,
2326 [SVM_EXIT_NPF] = pf_interception,
2329 static int handle_exit(struct kvm_vcpu *vcpu)
2331 struct vcpu_svm *svm = to_svm(vcpu);
2332 struct kvm_run *kvm_run = vcpu->run;
2333 u32 exit_code = svm->vmcb->control.exit_code;
2335 trace_kvm_exit(exit_code, svm->vmcb->save.rip);
2337 if (is_nested(svm)) {
2340 nsvm_printk("nested handle_exit: 0x%x | 0x%lx | 0x%lx | 0x%lx\n",
2341 exit_code, svm->vmcb->control.exit_info_1,
2342 svm->vmcb->control.exit_info_2, svm->vmcb->save.rip);
2344 vmexit = nested_svm_exit_special(svm);
2346 if (vmexit == NESTED_EXIT_CONTINUE)
2347 vmexit = nested_svm_exit_handled(svm);
2349 if (vmexit == NESTED_EXIT_DONE)
2353 svm_complete_interrupts(svm);
2357 if ((vcpu->arch.cr0 ^ svm->vmcb->save.cr0) & X86_CR0_PG) {
2358 svm_set_cr0(vcpu, svm->vmcb->save.cr0);
2361 vcpu->arch.cr0 = svm->vmcb->save.cr0;
2362 vcpu->arch.cr3 = svm->vmcb->save.cr3;
2364 kvm_mmu_reset_context(vcpu);
2370 if (svm->vmcb->control.exit_code == SVM_EXIT_ERR) {
2371 kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY;
2372 kvm_run->fail_entry.hardware_entry_failure_reason
2373 = svm->vmcb->control.exit_code;
2377 if (is_external_interrupt(svm->vmcb->control.exit_int_info) &&
2378 exit_code != SVM_EXIT_EXCP_BASE + PF_VECTOR &&
2379 exit_code != SVM_EXIT_NPF && exit_code != SVM_EXIT_TASK_SWITCH)
2380 printk(KERN_ERR "%s: unexpected exit_ini_info 0x%x "
2382 __func__, svm->vmcb->control.exit_int_info,
2385 if (exit_code >= ARRAY_SIZE(svm_exit_handlers)
2386 || !svm_exit_handlers[exit_code]) {
2387 kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
2388 kvm_run->hw.hardware_exit_reason = exit_code;
2392 return svm_exit_handlers[exit_code](svm);
2395 static void reload_tss(struct kvm_vcpu *vcpu)
2397 int cpu = raw_smp_processor_id();
2399 struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu);
2400 svm_data->tss_desc->type = 9; /* available 32/64-bit TSS */
2404 static void pre_svm_run(struct vcpu_svm *svm)
2406 int cpu = raw_smp_processor_id();
2408 struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu);
2410 svm->vmcb->control.tlb_ctl = TLB_CONTROL_DO_NOTHING;
2411 /* FIXME: handle wraparound of asid_generation */
2412 if (svm->asid_generation != svm_data->asid_generation)
2413 new_asid(svm, svm_data);
2416 static void svm_inject_nmi(struct kvm_vcpu *vcpu)
2418 struct vcpu_svm *svm = to_svm(vcpu);
2420 svm->vmcb->control.event_inj = SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_NMI;
2421 vcpu->arch.hflags |= HF_NMI_MASK;
2422 svm->vmcb->control.intercept |= (1UL << INTERCEPT_IRET);
2423 ++vcpu->stat.nmi_injections;
2426 static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
2428 struct vmcb_control_area *control;
2430 trace_kvm_inj_virq(irq);
2432 ++svm->vcpu.stat.irq_injections;
2433 control = &svm->vmcb->control;
2434 control->int_vector = irq;
2435 control->int_ctl &= ~V_INTR_PRIO_MASK;
2436 control->int_ctl |= V_IRQ_MASK |
2437 ((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT);
2440 static void svm_set_irq(struct kvm_vcpu *vcpu)
2442 struct vcpu_svm *svm = to_svm(vcpu);
2444 BUG_ON(!(gif_set(svm)));
2446 svm->vmcb->control.event_inj = vcpu->arch.interrupt.nr |
2447 SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR;
2450 static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
2452 struct vcpu_svm *svm = to_svm(vcpu);
2458 svm->vmcb->control.intercept_cr_write |= INTERCEPT_CR8_MASK;
2461 static int svm_nmi_allowed(struct kvm_vcpu *vcpu)
2463 struct vcpu_svm *svm = to_svm(vcpu);
2464 struct vmcb *vmcb = svm->vmcb;
2465 return !(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
2466 !(svm->vcpu.arch.hflags & HF_NMI_MASK);
2469 static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)
2471 struct vcpu_svm *svm = to_svm(vcpu);
2472 struct vmcb *vmcb = svm->vmcb;
2473 return (vmcb->save.rflags & X86_EFLAGS_IF) &&
2474 !(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
2476 !(is_nested(svm) && (svm->vcpu.arch.hflags & HF_VINTR_MASK));
2479 static void enable_irq_window(struct kvm_vcpu *vcpu)
2481 struct vcpu_svm *svm = to_svm(vcpu);
2482 nsvm_printk("Trying to open IRQ window\n");
2484 nested_svm_intr(svm);
2486 /* In case GIF=0 we can't rely on the CPU to tell us when
2487 * GIF becomes 1, because that's a separate STGI/VMRUN intercept.
2488 * The next time we get that intercept, this function will be
2489 * called again though and we'll get the vintr intercept. */
2492 svm_inject_irq(svm, 0x0);
2496 static void enable_nmi_window(struct kvm_vcpu *vcpu)
2498 struct vcpu_svm *svm = to_svm(vcpu);
2500 if ((svm->vcpu.arch.hflags & (HF_NMI_MASK | HF_IRET_MASK))
2502 return; /* IRET will cause a vm exit */
2504 /* Something prevents NMI from been injected. Single step over
2505 possible problem (IRET or exception injection or interrupt
2507 vcpu->arch.singlestep = true;
2508 svm->vmcb->save.rflags |= (X86_EFLAGS_TF | X86_EFLAGS_RF);
2509 update_db_intercept(vcpu);
2512 static int svm_set_tss_addr(struct kvm *kvm, unsigned int addr)
2517 static void svm_flush_tlb(struct kvm_vcpu *vcpu)
2519 force_new_asid(vcpu);
2522 static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu)
2526 static inline void sync_cr8_to_lapic(struct kvm_vcpu *vcpu)
2528 struct vcpu_svm *svm = to_svm(vcpu);
2530 if (!(svm->vmcb->control.intercept_cr_write & INTERCEPT_CR8_MASK)) {
2531 int cr8 = svm->vmcb->control.int_ctl & V_TPR_MASK;
2532 kvm_set_cr8(vcpu, cr8);
2536 static inline void sync_lapic_to_cr8(struct kvm_vcpu *vcpu)
2538 struct vcpu_svm *svm = to_svm(vcpu);
2541 cr8 = kvm_get_cr8(vcpu);
2542 svm->vmcb->control.int_ctl &= ~V_TPR_MASK;
2543 svm->vmcb->control.int_ctl |= cr8 & V_TPR_MASK;
2546 static void svm_complete_interrupts(struct vcpu_svm *svm)
2550 u32 exitintinfo = svm->vmcb->control.exit_int_info;
2552 if (svm->vcpu.arch.hflags & HF_IRET_MASK)
2553 svm->vcpu.arch.hflags &= ~(HF_NMI_MASK | HF_IRET_MASK);
2555 svm->vcpu.arch.nmi_injected = false;
2556 kvm_clear_exception_queue(&svm->vcpu);
2557 kvm_clear_interrupt_queue(&svm->vcpu);
2559 if (!(exitintinfo & SVM_EXITINTINFO_VALID))
2562 vector = exitintinfo & SVM_EXITINTINFO_VEC_MASK;
2563 type = exitintinfo & SVM_EXITINTINFO_TYPE_MASK;
2566 case SVM_EXITINTINFO_TYPE_NMI:
2567 svm->vcpu.arch.nmi_injected = true;
2569 case SVM_EXITINTINFO_TYPE_EXEPT:
2570 /* In case of software exception do not reinject an exception
2571 vector, but re-execute and instruction instead */
2574 if (kvm_exception_is_soft(vector))
2576 if (exitintinfo & SVM_EXITINTINFO_VALID_ERR) {
2577 u32 err = svm->vmcb->control.exit_int_info_err;
2578 kvm_queue_exception_e(&svm->vcpu, vector, err);
2581 kvm_queue_exception(&svm->vcpu, vector);
2583 case SVM_EXITINTINFO_TYPE_INTR:
2584 kvm_queue_interrupt(&svm->vcpu, vector, false);
2591 #ifdef CONFIG_X86_64
2597 static void svm_vcpu_run(struct kvm_vcpu *vcpu)
2599 struct vcpu_svm *svm = to_svm(vcpu);
2604 svm->vmcb->save.rax = vcpu->arch.regs[VCPU_REGS_RAX];
2605 svm->vmcb->save.rsp = vcpu->arch.regs[VCPU_REGS_RSP];
2606 svm->vmcb->save.rip = vcpu->arch.regs[VCPU_REGS_RIP];
2610 sync_lapic_to_cr8(vcpu);
2612 save_host_msrs(vcpu);
2613 fs_selector = kvm_read_fs();
2614 gs_selector = kvm_read_gs();
2615 ldt_selector = kvm_read_ldt();
2616 svm->vmcb->save.cr2 = vcpu->arch.cr2;
2617 /* required for live migration with NPT */
2619 svm->vmcb->save.cr3 = vcpu->arch.cr3;
2626 "push %%"R"bp; \n\t"
2627 "mov %c[rbx](%[svm]), %%"R"bx \n\t"
2628 "mov %c[rcx](%[svm]), %%"R"cx \n\t"
2629 "mov %c[rdx](%[svm]), %%"R"dx \n\t"
2630 "mov %c[rsi](%[svm]), %%"R"si \n\t"
2631 "mov %c[rdi](%[svm]), %%"R"di \n\t"
2632 "mov %c[rbp](%[svm]), %%"R"bp \n\t"
2633 #ifdef CONFIG_X86_64
2634 "mov %c[r8](%[svm]), %%r8 \n\t"
2635 "mov %c[r9](%[svm]), %%r9 \n\t"
2636 "mov %c[r10](%[svm]), %%r10 \n\t"
2637 "mov %c[r11](%[svm]), %%r11 \n\t"
2638 "mov %c[r12](%[svm]), %%r12 \n\t"
2639 "mov %c[r13](%[svm]), %%r13 \n\t"
2640 "mov %c[r14](%[svm]), %%r14 \n\t"
2641 "mov %c[r15](%[svm]), %%r15 \n\t"
2644 /* Enter guest mode */
2646 "mov %c[vmcb](%[svm]), %%"R"ax \n\t"
2647 __ex(SVM_VMLOAD) "\n\t"
2648 __ex(SVM_VMRUN) "\n\t"
2649 __ex(SVM_VMSAVE) "\n\t"
2652 /* Save guest registers, load host registers */
2653 "mov %%"R"bx, %c[rbx](%[svm]) \n\t"
2654 "mov %%"R"cx, %c[rcx](%[svm]) \n\t"
2655 "mov %%"R"dx, %c[rdx](%[svm]) \n\t"
2656 "mov %%"R"si, %c[rsi](%[svm]) \n\t"
2657 "mov %%"R"di, %c[rdi](%[svm]) \n\t"
2658 "mov %%"R"bp, %c[rbp](%[svm]) \n\t"
2659 #ifdef CONFIG_X86_64
2660 "mov %%r8, %c[r8](%[svm]) \n\t"
2661 "mov %%r9, %c[r9](%[svm]) \n\t"
2662 "mov %%r10, %c[r10](%[svm]) \n\t"
2663 "mov %%r11, %c[r11](%[svm]) \n\t"
2664 "mov %%r12, %c[r12](%[svm]) \n\t"
2665 "mov %%r13, %c[r13](%[svm]) \n\t"
2666 "mov %%r14, %c[r14](%[svm]) \n\t"
2667 "mov %%r15, %c[r15](%[svm]) \n\t"
2672 [vmcb]"i"(offsetof(struct vcpu_svm, vmcb_pa)),
2673 [rbx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RBX])),
2674 [rcx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RCX])),
2675 [rdx]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RDX])),
2676 [rsi]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RSI])),
2677 [rdi]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RDI])),
2678 [rbp]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_RBP]))
2679 #ifdef CONFIG_X86_64
2680 , [r8]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R8])),
2681 [r9]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R9])),
2682 [r10]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R10])),
2683 [r11]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R11])),
2684 [r12]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R12])),
2685 [r13]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R13])),
2686 [r14]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R14])),
2687 [r15]"i"(offsetof(struct vcpu_svm, vcpu.arch.regs[VCPU_REGS_R15]))
2690 , R"bx", R"cx", R"dx", R"si", R"di"
2691 #ifdef CONFIG_X86_64
2692 , "r8", "r9", "r10", "r11" , "r12", "r13", "r14", "r15"
2696 vcpu->arch.cr2 = svm->vmcb->save.cr2;
2697 vcpu->arch.regs[VCPU_REGS_RAX] = svm->vmcb->save.rax;
2698 vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp;
2699 vcpu->arch.regs[VCPU_REGS_RIP] = svm->vmcb->save.rip;
2701 kvm_load_fs(fs_selector);
2702 kvm_load_gs(gs_selector);
2703 kvm_load_ldt(ldt_selector);
2704 load_host_msrs(vcpu);
2708 local_irq_disable();
2712 sync_cr8_to_lapic(vcpu);
2717 vcpu->arch.regs_avail &= ~(1 << VCPU_EXREG_PDPTR);
2718 vcpu->arch.regs_dirty &= ~(1 << VCPU_EXREG_PDPTR);
2724 static void svm_set_cr3(struct kvm_vcpu *vcpu, unsigned long root)
2726 struct vcpu_svm *svm = to_svm(vcpu);
2729 svm->vmcb->control.nested_cr3 = root;
2730 force_new_asid(vcpu);
2734 svm->vmcb->save.cr3 = root;
2735 force_new_asid(vcpu);
2737 if (vcpu->fpu_active) {
2738 svm->vmcb->control.intercept_exceptions |= (1 << NM_VECTOR);
2739 svm->vmcb->save.cr0 |= X86_CR0_TS;
2740 vcpu->fpu_active = 0;
2744 static int is_disabled(void)
2748 rdmsrl(MSR_VM_CR, vm_cr);
2749 if (vm_cr & (1 << SVM_VM_CR_SVM_DISABLE))
2756 svm_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
2759 * Patch in the VMMCALL instruction:
2761 hypercall[0] = 0x0f;
2762 hypercall[1] = 0x01;
2763 hypercall[2] = 0xd9;
2766 static void svm_check_processor_compat(void *rtn)
2771 static bool svm_cpu_has_accelerated_tpr(void)
2776 static int get_npt_level(void)
2778 #ifdef CONFIG_X86_64
2779 return PT64_ROOT_LEVEL;
2781 return PT32E_ROOT_LEVEL;
2785 static u64 svm_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
2790 static const struct trace_print_flags svm_exit_reasons_str[] = {
2791 { SVM_EXIT_READ_CR0, "read_cr0" },
2792 { SVM_EXIT_READ_CR3, "read_cr3" },
2793 { SVM_EXIT_READ_CR4, "read_cr4" },
2794 { SVM_EXIT_READ_CR8, "read_cr8" },
2795 { SVM_EXIT_WRITE_CR0, "write_cr0" },
2796 { SVM_EXIT_WRITE_CR3, "write_cr3" },
2797 { SVM_EXIT_WRITE_CR4, "write_cr4" },
2798 { SVM_EXIT_WRITE_CR8, "write_cr8" },
2799 { SVM_EXIT_READ_DR0, "read_dr0" },
2800 { SVM_EXIT_READ_DR1, "read_dr1" },
2801 { SVM_EXIT_READ_DR2, "read_dr2" },
2802 { SVM_EXIT_READ_DR3, "read_dr3" },
2803 { SVM_EXIT_WRITE_DR0, "write_dr0" },
2804 { SVM_EXIT_WRITE_DR1, "write_dr1" },
2805 { SVM_EXIT_WRITE_DR2, "write_dr2" },
2806 { SVM_EXIT_WRITE_DR3, "write_dr3" },
2807 { SVM_EXIT_WRITE_DR5, "write_dr5" },
2808 { SVM_EXIT_WRITE_DR7, "write_dr7" },
2809 { SVM_EXIT_EXCP_BASE + DB_VECTOR, "DB excp" },
2810 { SVM_EXIT_EXCP_BASE + BP_VECTOR, "BP excp" },
2811 { SVM_EXIT_EXCP_BASE + UD_VECTOR, "UD excp" },
2812 { SVM_EXIT_EXCP_BASE + PF_VECTOR, "PF excp" },
2813 { SVM_EXIT_EXCP_BASE + NM_VECTOR, "NM excp" },
2814 { SVM_EXIT_EXCP_BASE + MC_VECTOR, "MC excp" },
2815 { SVM_EXIT_INTR, "interrupt" },
2816 { SVM_EXIT_NMI, "nmi" },
2817 { SVM_EXIT_SMI, "smi" },
2818 { SVM_EXIT_INIT, "init" },
2819 { SVM_EXIT_VINTR, "vintr" },
2820 { SVM_EXIT_CPUID, "cpuid" },
2821 { SVM_EXIT_INVD, "invd" },
2822 { SVM_EXIT_HLT, "hlt" },
2823 { SVM_EXIT_INVLPG, "invlpg" },
2824 { SVM_EXIT_INVLPGA, "invlpga" },
2825 { SVM_EXIT_IOIO, "io" },
2826 { SVM_EXIT_MSR, "msr" },
2827 { SVM_EXIT_TASK_SWITCH, "task_switch" },
2828 { SVM_EXIT_SHUTDOWN, "shutdown" },
2829 { SVM_EXIT_VMRUN, "vmrun" },
2830 { SVM_EXIT_VMMCALL, "hypercall" },
2831 { SVM_EXIT_VMLOAD, "vmload" },
2832 { SVM_EXIT_VMSAVE, "vmsave" },
2833 { SVM_EXIT_STGI, "stgi" },
2834 { SVM_EXIT_CLGI, "clgi" },
2835 { SVM_EXIT_SKINIT, "skinit" },
2836 { SVM_EXIT_WBINVD, "wbinvd" },
2837 { SVM_EXIT_MONITOR, "monitor" },
2838 { SVM_EXIT_MWAIT, "mwait" },
2839 { SVM_EXIT_NPF, "npf" },
2843 static bool svm_gb_page_enable(void)
2848 static struct kvm_x86_ops svm_x86_ops = {
2849 .cpu_has_kvm_support = has_svm,
2850 .disabled_by_bios = is_disabled,
2851 .hardware_setup = svm_hardware_setup,
2852 .hardware_unsetup = svm_hardware_unsetup,
2853 .check_processor_compatibility = svm_check_processor_compat,
2854 .hardware_enable = svm_hardware_enable,
2855 .hardware_disable = svm_hardware_disable,
2856 .cpu_has_accelerated_tpr = svm_cpu_has_accelerated_tpr,
2858 .vcpu_create = svm_create_vcpu,
2859 .vcpu_free = svm_free_vcpu,
2860 .vcpu_reset = svm_vcpu_reset,
2862 .prepare_guest_switch = svm_prepare_guest_switch,
2863 .vcpu_load = svm_vcpu_load,
2864 .vcpu_put = svm_vcpu_put,
2866 .set_guest_debug = svm_guest_debug,
2867 .get_msr = svm_get_msr,
2868 .set_msr = svm_set_msr,
2869 .get_segment_base = svm_get_segment_base,
2870 .get_segment = svm_get_segment,
2871 .set_segment = svm_set_segment,
2872 .get_cpl = svm_get_cpl,
2873 .get_cs_db_l_bits = kvm_get_cs_db_l_bits,
2874 .decache_cr4_guest_bits = svm_decache_cr4_guest_bits,
2875 .set_cr0 = svm_set_cr0,
2876 .set_cr3 = svm_set_cr3,
2877 .set_cr4 = svm_set_cr4,
2878 .set_efer = svm_set_efer,
2879 .get_idt = svm_get_idt,
2880 .set_idt = svm_set_idt,
2881 .get_gdt = svm_get_gdt,
2882 .set_gdt = svm_set_gdt,
2883 .get_dr = svm_get_dr,
2884 .set_dr = svm_set_dr,
2885 .cache_reg = svm_cache_reg,
2886 .get_rflags = svm_get_rflags,
2887 .set_rflags = svm_set_rflags,
2889 .tlb_flush = svm_flush_tlb,
2891 .run = svm_vcpu_run,
2892 .handle_exit = handle_exit,
2893 .skip_emulated_instruction = skip_emulated_instruction,
2894 .set_interrupt_shadow = svm_set_interrupt_shadow,
2895 .get_interrupt_shadow = svm_get_interrupt_shadow,
2896 .patch_hypercall = svm_patch_hypercall,
2897 .set_irq = svm_set_irq,
2898 .set_nmi = svm_inject_nmi,
2899 .queue_exception = svm_queue_exception,
2900 .interrupt_allowed = svm_interrupt_allowed,
2901 .nmi_allowed = svm_nmi_allowed,
2902 .enable_nmi_window = enable_nmi_window,
2903 .enable_irq_window = enable_irq_window,
2904 .update_cr8_intercept = update_cr8_intercept,
2906 .set_tss_addr = svm_set_tss_addr,
2907 .get_tdp_level = get_npt_level,
2908 .get_mt_mask = svm_get_mt_mask,
2910 .exit_reasons_str = svm_exit_reasons_str,
2911 .gb_page_enable = svm_gb_page_enable,
2914 static int __init svm_init(void)
2916 return kvm_init(&svm_x86_ops, sizeof(struct vcpu_svm),
2920 static void __exit svm_exit(void)
2925 module_init(svm_init)
2926 module_exit(svm_exit)