5 * This work is licensed under the terms of the GNU GPL, version 2. See
6 * the COPYING file in the top-level directory.
9 #include <linux/types.h>
10 #include <linux/list.h>
11 #include <linux/mutex.h>
12 #include <linux/spinlock.h>
13 #include <linux/signal.h>
14 #include <linux/sched.h>
16 #include <linux/preempt.h>
17 #include <asm/signal.h>
19 #include <linux/kvm.h>
20 #include <linux/kvm_para.h>
22 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
23 #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
24 #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)
26 #define KVM_GUEST_CR0_MASK \
27 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
28 | X86_CR0_NW | X86_CR0_CD)
29 #define KVM_VM_CR0_ALWAYS_ON \
30 (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
32 #define KVM_GUEST_CR4_MASK \
33 (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
34 #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
35 #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
37 #define INVALID_PAGE (~(hpa_t)0)
38 #define UNMAPPED_GVA (~(gpa_t)0)
40 #define KVM_MAX_VCPUS 4
41 #define KVM_ALIAS_SLOTS 4
42 #define KVM_MEMORY_SLOTS 8
43 #define KVM_NUM_MMU_PAGES 1024
44 #define KVM_MIN_FREE_MMU_PAGES 5
45 #define KVM_REFILL_PAGES 25
46 #define KVM_MAX_CPUID_ENTRIES 40
58 #define SELECTOR_TI_MASK (1 << 2)
59 #define SELECTOR_RPL_MASK 0x03
63 #define KVM_PIO_PAGE_OFFSET 1
66 * vcpu->requests bit members
68 #define KVM_TLB_FLUSH 0
73 * gva - guest virtual address
74 * gpa - guest physical address
75 * gfn - guest frame number
76 * hva - host virtual address
77 * hpa - host physical address
78 * hfn - host frame number
81 typedef unsigned long gva_t;
83 typedef unsigned long gfn_t;
85 typedef unsigned long hva_t;
87 typedef unsigned long hfn_t;
89 #define NR_PTE_CHAIN_ENTRIES 5
91 struct kvm_pte_chain {
92 u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
93 struct hlist_node link;
97 * kvm_mmu_page_role, below, is defined as:
99 * bits 0:3 - total guest paging levels (2-4, or zero for real mode)
100 * bits 4:7 - page table level for this shadow (1-4)
101 * bits 8:9 - page table quadrant for 2-level guests
102 * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode)
103 * bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde
105 union kvm_mmu_page_role {
108 unsigned glevels : 4;
110 unsigned quadrant : 2;
111 unsigned pad_for_nice_hex_output : 6;
112 unsigned metaphysical : 1;
113 unsigned hugepage_access : 3;
117 struct kvm_mmu_page {
118 struct list_head link;
119 struct hlist_node hash_link;
122 * The following two entries are used to key the shadow page in the
126 union kvm_mmu_page_role role;
129 /* hold the gfn of each spte inside spt */
131 unsigned long slot_bitmap; /* One bit set per slot which has memory
132 * in this shadow page.
134 int multimapped; /* More than one parent_pte? */
135 int root_count; /* Currently serving as active root */
137 u64 *parent_pte; /* !multimapped */
138 struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
143 extern struct kmem_cache *kvm_vcpu_cache;
146 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
147 * 32-bit). The kvm_mmu structure abstracts the details of the current mmu
151 void (*new_cr3)(struct kvm_vcpu *vcpu);
152 int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
153 void (*free)(struct kvm_vcpu *vcpu);
154 gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);
155 void (*prefetch_page)(struct kvm_vcpu *vcpu,
156 struct kvm_mmu_page *page);
159 int shadow_root_level;
164 #define KVM_NR_MEM_OBJS 40
166 struct kvm_mmu_memory_cache {
168 void *objects[KVM_NR_MEM_OBJS];
172 * We don't want allocation failures within the mmu code, so we preallocate
173 * enough memory for a single page fault in a cache.
175 struct kvm_guest_debug {
214 #include "x86_emulate.h"
216 struct kvm_pio_request {
219 struct page *guest_pages[2];
220 unsigned guest_page_offset;
239 u32 irq_window_exits;
242 u32 request_irq_exits;
248 struct kvm_io_device {
249 void (*read)(struct kvm_io_device *this,
253 void (*write)(struct kvm_io_device *this,
257 int (*in_range)(struct kvm_io_device *this, gpa_t addr);
258 void (*destructor)(struct kvm_io_device *this);
263 static inline void kvm_iodevice_read(struct kvm_io_device *dev,
268 dev->read(dev, addr, len, val);
271 static inline void kvm_iodevice_write(struct kvm_io_device *dev,
276 dev->write(dev, addr, len, val);
279 static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
281 return dev->in_range(dev, addr);
284 static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
287 dev->destructor(dev);
291 * It would be nice to use something smarter than a linear search, TBD...
292 * Thankfully we dont expect many devices to register (famous last words :),
293 * so until then it will suffice. At least its abstracted so we can change
298 #define NR_IOBUS_DEVS 6
299 struct kvm_io_device *devs[NR_IOBUS_DEVS];
302 void kvm_io_bus_init(struct kvm_io_bus *bus);
303 void kvm_io_bus_destroy(struct kvm_io_bus *bus);
304 struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
305 void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
306 struct kvm_io_device *dev);
310 struct preempt_notifier preempt_notifier;
316 int interrupt_window_open;
318 unsigned long requests;
319 unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
320 DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
321 unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
322 unsigned long rip; /* needs vcpu_load_rsp_rip() */
329 u64 pdptrs[4]; /* pae */
332 struct kvm_lapic *apic; /* kernel irqchip context */
333 #define VCPU_MP_STATE_RUNNABLE 0
334 #define VCPU_MP_STATE_UNINITIALIZED 1
335 #define VCPU_MP_STATE_INIT_RECEIVED 2
336 #define VCPU_MP_STATE_SIPI_RECEIVED 3
337 #define VCPU_MP_STATE_HALTED 4
340 u64 ia32_misc_enable_msr;
344 struct kvm_mmu_memory_cache mmu_pte_chain_cache;
345 struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
346 struct kvm_mmu_memory_cache mmu_page_cache;
347 struct kvm_mmu_memory_cache mmu_page_header_cache;
349 gfn_t last_pt_write_gfn;
350 int last_pt_write_count;
351 u64 *last_pte_updated;
353 struct kvm_guest_debug guest_debug;
355 struct i387_fxsave_struct host_fx_image;
356 struct i387_fxsave_struct guest_fx_image;
358 int guest_fpu_loaded;
361 int mmio_read_completed;
364 unsigned char mmio_data[8];
365 gpa_t mmio_phys_addr;
366 gva_t mmio_fault_cr2;
367 struct kvm_pio_request pio;
369 wait_queue_head_t wq;
374 struct kvm_stat stat;
379 struct kvm_save_segment {
384 } tr, es, ds, fs, gs;
386 int halt_request; /* real mode on Intel only */
389 struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES];
391 /* emulate context */
393 struct x86_emulate_ctxt emulate_ctxt;
396 struct kvm_mem_alias {
398 unsigned long npages;
402 struct kvm_memory_slot {
404 unsigned long npages;
406 struct page **phys_mem;
408 unsigned long *dirty_bitmap;
412 struct mutex lock; /* protects everything except vcpus */
414 struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
416 struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS];
418 * Hash table of struct kvm_mmu_page.
420 struct list_head active_mmu_pages;
421 int n_free_mmu_pages;
422 struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
423 struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
424 unsigned long rmap_overflow;
425 struct list_head vm_list;
427 struct kvm_io_bus mmio_bus;
428 struct kvm_io_bus pio_bus;
429 struct kvm_pic *vpic;
430 struct kvm_ioapic *vioapic;
431 int round_robin_prev_vcpu;
434 static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
439 static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
444 static inline int irqchip_in_kernel(struct kvm *kvm)
446 return pic_irqchip(kvm) != 0;
449 struct descriptor_table {
452 } __attribute__((packed));
455 int (*cpu_has_kvm_support)(void); /* __init */
456 int (*disabled_by_bios)(void); /* __init */
457 void (*hardware_enable)(void *dummy); /* __init */
458 void (*hardware_disable)(void *dummy);
459 void (*check_processor_compatibility)(void *rtn);
460 int (*hardware_setup)(void); /* __init */
461 void (*hardware_unsetup)(void); /* __exit */
463 /* Create, but do not attach this VCPU */
464 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
465 void (*vcpu_free)(struct kvm_vcpu *vcpu);
466 void (*vcpu_reset)(struct kvm_vcpu *vcpu);
468 void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
469 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
470 void (*vcpu_put)(struct kvm_vcpu *vcpu);
471 void (*vcpu_decache)(struct kvm_vcpu *vcpu);
473 int (*set_guest_debug)(struct kvm_vcpu *vcpu,
474 struct kvm_debug_guest *dbg);
475 void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
476 int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
477 int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
478 u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
479 void (*get_segment)(struct kvm_vcpu *vcpu,
480 struct kvm_segment *var, int seg);
481 void (*set_segment)(struct kvm_vcpu *vcpu,
482 struct kvm_segment *var, int seg);
483 void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
484 void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
485 void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
486 void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
487 void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
488 void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
489 void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
490 void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
491 void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
492 void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
493 unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
494 void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
496 void (*cache_regs)(struct kvm_vcpu *vcpu);
497 void (*decache_regs)(struct kvm_vcpu *vcpu);
498 unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
499 void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
501 void (*tlb_flush)(struct kvm_vcpu *vcpu);
502 void (*inject_page_fault)(struct kvm_vcpu *vcpu,
503 unsigned long addr, u32 err_code);
505 void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
507 void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
508 int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
509 void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
510 void (*patch_hypercall)(struct kvm_vcpu *vcpu,
511 unsigned char *hypercall_addr);
512 int (*get_irq)(struct kvm_vcpu *vcpu);
513 void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
514 void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
515 void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
516 struct kvm_run *run);
519 extern struct kvm_x86_ops *kvm_x86_ops;
521 /* The guest did something we don't support. */
522 #define pr_unimpl(vcpu, fmt, ...) \
524 if (printk_ratelimit()) \
525 printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
526 current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
529 #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
530 #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
532 int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
533 void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
535 int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size,
536 struct module *module);
537 void kvm_exit_x86(void);
539 int kvm_mmu_module_init(void);
540 void kvm_mmu_module_exit(void);
542 void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
543 int kvm_mmu_create(struct kvm_vcpu *vcpu);
544 int kvm_mmu_setup(struct kvm_vcpu *vcpu);
545 void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
547 int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
548 void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
549 void kvm_mmu_zap_all(struct kvm *kvm);
551 hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa);
552 #define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
553 #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
554 static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
555 hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
556 struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
558 extern hpa_t bad_page_address;
560 gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
561 struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
562 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
564 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
565 int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
566 int offset, int len);
567 int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
569 int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
570 int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
571 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
572 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
574 enum emulation_result {
575 EMULATE_DONE, /* no further processing */
576 EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
577 EMULATE_FAIL, /* can't emulate this instruction */
580 int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
581 unsigned long cr2, u16 error_code, int no_decode);
582 void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
583 void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
584 void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
585 void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
586 unsigned long *rflags);
588 unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
589 void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
590 unsigned long *rflags);
591 int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
592 int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
594 struct x86_emulate_ctxt;
596 int kvm_emulate_pio (struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
597 int size, unsigned port);
598 int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
599 int size, unsigned long count, int down,
600 gva_t address, int rep, unsigned port);
601 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
602 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
603 int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
604 int emulate_clts(struct kvm_vcpu *vcpu);
605 int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr,
606 unsigned long *dest);
607 int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
608 unsigned long value);
610 void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
611 void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
612 void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
613 void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
614 unsigned long get_cr8(struct kvm_vcpu *vcpu);
615 void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
616 void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
618 int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
619 int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
621 void fx_init(struct kvm_vcpu *vcpu);
623 void kvm_resched(struct kvm_vcpu *vcpu);
624 void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
625 void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
626 void kvm_flush_remote_tlbs(struct kvm *kvm);
628 int emulator_read_std(unsigned long addr,
631 struct kvm_vcpu *vcpu);
632 int emulator_write_emulated(unsigned long addr,
635 struct kvm_vcpu *vcpu);
637 unsigned long segment_base(u16 selector);
639 void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
640 const u8 *new, int bytes);
641 int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
642 void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
643 int kvm_mmu_load(struct kvm_vcpu *vcpu);
644 void kvm_mmu_unload(struct kvm_vcpu *vcpu);
646 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
648 int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
650 static inline void kvm_guest_enter(void)
652 current->flags |= PF_VCPU;
655 static inline void kvm_guest_exit(void)
657 current->flags &= ~PF_VCPU;
660 static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
663 return vcpu->mmu.page_fault(vcpu, gva, error_code);
666 static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
668 if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
669 __kvm_mmu_free_some_pages(vcpu);
672 static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
674 if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
677 return kvm_mmu_load(vcpu);
680 static inline int is_long_mode(struct kvm_vcpu *vcpu)
683 return vcpu->shadow_efer & EFER_LME;
689 static inline int is_pae(struct kvm_vcpu *vcpu)
691 return vcpu->cr4 & X86_CR4_PAE;
694 static inline int is_pse(struct kvm_vcpu *vcpu)
696 return vcpu->cr4 & X86_CR4_PSE;
699 static inline int is_paging(struct kvm_vcpu *vcpu)
701 return vcpu->cr0 & X86_CR0_PG;
704 static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
706 return slot - kvm->memslots;
709 static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
711 struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
713 return (struct kvm_mmu_page *)page_private(page);
716 static inline u16 read_fs(void)
719 asm ("mov %%fs, %0" : "=g"(seg));
723 static inline u16 read_gs(void)
726 asm ("mov %%gs, %0" : "=g"(seg));
730 static inline u16 read_ldt(void)
733 asm ("sldt %0" : "=g"(ldt));
737 static inline void load_fs(u16 sel)
739 asm ("mov %0, %%fs" : : "rm"(sel));
742 static inline void load_gs(u16 sel)
744 asm ("mov %0, %%gs" : : "rm"(sel));
748 static inline void load_ldt(u16 sel)
750 asm ("lldt %0" : : "rm"(sel));
754 static inline void get_idt(struct descriptor_table *table)
756 asm ("sidt %0" : "=m"(*table));
759 static inline void get_gdt(struct descriptor_table *table)
761 asm ("sgdt %0" : "=m"(*table));
764 static inline unsigned long read_tr_base(void)
767 asm ("str %0" : "=g"(tr));
768 return segment_base(tr);
772 static inline unsigned long read_msr(unsigned long msr)
781 static inline void fx_save(struct i387_fxsave_struct *image)
783 asm ("fxsave (%0)":: "r" (image));
786 static inline void fx_restore(struct i387_fxsave_struct *image)
788 asm ("fxrstor (%0)":: "r" (image));
791 static inline void fpu_init(void)
796 static inline u32 get_rdx_init_val(void)
798 return 0x600; /* P6 family */
801 #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
802 #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
803 #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
804 #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
805 #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
806 #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
807 #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
808 #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
809 #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
811 #define MSR_IA32_TIME_STAMP_COUNTER 0x010
813 #define TSS_IOPB_BASE_OFFSET 0x66
814 #define TSS_BASE_SIZE 0x68
815 #define TSS_IOPB_SIZE (65536 / 8)
816 #define TSS_REDIRECTION_SIZE (256 / 8)
817 #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)