| #/* |
| * Kernel-based Virtual Machine driver for Linux |
| * |
| * This header defines architecture specific interfaces, x86 version |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2. See |
| * the COPYING file in the top-level directory. |
| * |
| */ |
| |
| #ifndef ASM_KVM_HOST_H |
| #define ASM_KVM_HOST_H |
| |
| #include <linux/types.h> |
| #include <linux/mm.h> |
| |
| #include <linux/kvm.h> |
| #include <linux/kvm_para.h> |
| #include <linux/kvm_types.h> |
| |
| #include <asm/pvclock-abi.h> |
| #include <asm/desc.h> |
| |
| #define KVM_MAX_VCPUS 16 |
| #define KVM_MEMORY_SLOTS 32 |
| /* memory slots that does not exposed to userspace */ |
| #define KVM_PRIVATE_MEM_SLOTS 4 |
| |
| #define KVM_PIO_PAGE_OFFSET 1 |
| #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 |
| |
| #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1) |
| #define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD)) |
| #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \ |
| 0xFFFFFF0000000000ULL) |
| |
| #define KVM_GUEST_CR0_MASK \ |
| (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \ |
| | X86_CR0_NW | X86_CR0_CD) |
| #define KVM_VM_CR0_ALWAYS_ON \ |
| (X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \ |
| | X86_CR0_MP) |
| #define KVM_GUEST_CR4_MASK \ |
| (X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE) |
| #define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE) |
| #define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE) |
| |
| #define INVALID_PAGE (~(hpa_t)0) |
| #define UNMAPPED_GVA (~(gpa_t)0) |
| |
| /* shadow tables are PAE even on non-PAE hosts */ |
| #define KVM_HPAGE_SHIFT 21 |
| #define KVM_HPAGE_SIZE (1UL << KVM_HPAGE_SHIFT) |
| #define KVM_HPAGE_MASK (~(KVM_HPAGE_SIZE - 1)) |
| |
| #define KVM_PAGES_PER_HPAGE (KVM_HPAGE_SIZE / PAGE_SIZE) |
| |
| #define DE_VECTOR 0 |
| #define UD_VECTOR 6 |
| #define NM_VECTOR 7 |
| #define DF_VECTOR 8 |
| #define TS_VECTOR 10 |
| #define NP_VECTOR 11 |
| #define SS_VECTOR 12 |
| #define GP_VECTOR 13 |
| #define PF_VECTOR 14 |
| #define MC_VECTOR 18 |
| |
| #define SELECTOR_TI_MASK (1 << 2) |
| #define SELECTOR_RPL_MASK 0x03 |
| |
| #define IOPL_SHIFT 12 |
| |
| #define KVM_ALIAS_SLOTS 4 |
| |
| #define KVM_PERMILLE_MMU_PAGES 20 |
| #define KVM_MIN_ALLOC_MMU_PAGES 64 |
| #define KVM_MMU_HASH_SHIFT 10 |
| #define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT) |
| #define KVM_MIN_FREE_MMU_PAGES 5 |
| #define KVM_REFILL_PAGES 25 |
| #define KVM_MAX_CPUID_ENTRIES 40 |
| #define KVM_NR_VAR_MTRR 8 |
| |
| extern spinlock_t kvm_lock; |
| extern struct list_head vm_list; |
| |
| struct kvm_vcpu; |
| struct kvm; |
| |
| enum { |
| VCPU_REGS_RAX = 0, |
| VCPU_REGS_RCX = 1, |
| VCPU_REGS_RDX = 2, |
| VCPU_REGS_RBX = 3, |
| VCPU_REGS_RSP = 4, |
| VCPU_REGS_RBP = 5, |
| VCPU_REGS_RSI = 6, |
| VCPU_REGS_RDI = 7, |
| #ifdef CONFIG_X86_64 |
| VCPU_REGS_R8 = 8, |
| VCPU_REGS_R9 = 9, |
| VCPU_REGS_R10 = 10, |
| VCPU_REGS_R11 = 11, |
| VCPU_REGS_R12 = 12, |
| VCPU_REGS_R13 = 13, |
| VCPU_REGS_R14 = 14, |
| VCPU_REGS_R15 = 15, |
| #endif |
| NR_VCPU_REGS |
| }; |
| |
| enum { |
| VCPU_SREG_ES, |
| VCPU_SREG_CS, |
| VCPU_SREG_SS, |
| VCPU_SREG_DS, |
| VCPU_SREG_FS, |
| VCPU_SREG_GS, |
| VCPU_SREG_TR, |
| VCPU_SREG_LDTR, |
| }; |
| |
| #include <asm/kvm_x86_emulate.h> |
| |
| #define KVM_NR_MEM_OBJS 40 |
| |
| struct kvm_guest_debug { |
| int enabled; |
| unsigned long bp[4]; |
| int singlestep; |
| }; |
| |
| /* |
| * We don't want allocation failures within the mmu code, so we preallocate |
| * enough memory for a single page fault in a cache. |
| */ |
| struct kvm_mmu_memory_cache { |
| int nobjs; |
| void *objects[KVM_NR_MEM_OBJS]; |
| }; |
| |
| #define NR_PTE_CHAIN_ENTRIES 5 |
| |
| struct kvm_pte_chain { |
| u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; |
| struct hlist_node link; |
| }; |
| |
| /* |
| * kvm_mmu_page_role, below, is defined as: |
| * |
| * bits 0:3 - total guest paging levels (2-4, or zero for real mode) |
| * bits 4:7 - page table level for this shadow (1-4) |
| * bits 8:9 - page table quadrant for 2-level guests |
| * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) |
| * bits 17:19 - common access permissions for all ptes in this shadow page |
| */ |
| union kvm_mmu_page_role { |
| unsigned word; |
| struct { |
| unsigned glevels:4; |
| unsigned level:4; |
| unsigned quadrant:2; |
| unsigned pad_for_nice_hex_output:6; |
| unsigned metaphysical:1; |
| unsigned access:3; |
| unsigned invalid:1; |
| }; |
| }; |
| |
| struct kvm_mmu_page { |
| struct list_head link; |
| struct hlist_node hash_link; |
| |
| /* |
| * The following two entries are used to key the shadow page in the |
| * hash table. |
| */ |
| gfn_t gfn; |
| union kvm_mmu_page_role role; |
| |
| u64 *spt; |
| /* hold the gfn of each spte inside spt */ |
| gfn_t *gfns; |
| unsigned long slot_bitmap; /* One bit set per slot which has memory |
| * in this shadow page. |
| */ |
| int multimapped; /* More than one parent_pte? */ |
| int root_count; /* Currently serving as active root */ |
| union { |
| u64 *parent_pte; /* !multimapped */ |
| struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ |
| }; |
| }; |
| |
| /* |
| * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level |
| * 32-bit). The kvm_mmu structure abstracts the details of the current mmu |
| * mode. |
| */ |
| struct kvm_mmu { |
| void (*new_cr3)(struct kvm_vcpu *vcpu); |
| int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); |
| void (*free)(struct kvm_vcpu *vcpu); |
| gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); |
| void (*prefetch_page)(struct kvm_vcpu *vcpu, |
| struct kvm_mmu_page *page); |
| hpa_t root_hpa; |
| int root_level; |
| int shadow_root_level; |
| |
| u64 *pae_root; |
| }; |
| |
| struct kvm_vcpu_arch { |
| u64 host_tsc; |
| int interrupt_window_open; |
| unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ |
| DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS); |
| unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */ |
| unsigned long rip; /* needs vcpu_load_rsp_rip() */ |
| |
| unsigned long cr0; |
| unsigned long cr2; |
| unsigned long cr3; |
| unsigned long cr4; |
| unsigned long cr8; |
| u64 pdptrs[4]; /* pae */ |
| u64 shadow_efer; |
| u64 apic_base; |
| struct kvm_lapic *apic; /* kernel irqchip context */ |
| int mp_state; |
| int sipi_vector; |
| u64 ia32_misc_enable_msr; |
| bool tpr_access_reporting; |
| |
| struct kvm_mmu mmu; |
| |
| struct kvm_mmu_memory_cache mmu_pte_chain_cache; |
| struct kvm_mmu_memory_cache mmu_rmap_desc_cache; |
| struct kvm_mmu_memory_cache mmu_page_cache; |
| struct kvm_mmu_memory_cache mmu_page_header_cache; |
| |
| gfn_t last_pt_write_gfn; |
| int last_pt_write_count; |
| u64 *last_pte_updated; |
| gfn_t last_pte_gfn; |
| |
| struct { |
| gfn_t gfn; /* presumed gfn during guest pte update */ |
| pfn_t pfn; /* pfn corresponding to that gfn */ |
| int largepage; |
| } update_pte; |
| |
| struct i387_fxsave_struct host_fx_image; |
| struct i387_fxsave_struct guest_fx_image; |
| |
| gva_t mmio_fault_cr2; |
| struct kvm_pio_request pio; |
| void *pio_data; |
| |
| struct kvm_queued_exception { |
| bool pending; |
| bool has_error_code; |
| u8 nr; |
| u32 error_code; |
| } exception; |
| |
| struct { |
| int active; |
| u8 save_iopl; |
| struct kvm_save_segment { |
| u16 selector; |
| unsigned long base; |
| u32 limit; |
| u32 ar; |
| } tr, es, ds, fs, gs; |
| } rmode; |
| int halt_request; /* real mode on Intel only */ |
| |
| int cpuid_nent; |
| struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES]; |
| /* emulate context */ |
| |
| struct x86_emulate_ctxt emulate_ctxt; |
| |
| gpa_t time; |
| struct pvclock_vcpu_time_info hv_clock; |
| unsigned int hv_clock_tsc_khz; |
| unsigned int time_offset; |
| struct page *time_page; |
| |
| bool nmi_pending; |
| |
| u64 mtrr[0x100]; |
| }; |
| |
| struct kvm_mem_alias { |
| gfn_t base_gfn; |
| unsigned long npages; |
| gfn_t target_gfn; |
| }; |
| |
| struct kvm_arch{ |
| int naliases; |
| struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; |
| |
| unsigned int n_free_mmu_pages; |
| unsigned int n_requested_mmu_pages; |
| unsigned int n_alloc_mmu_pages; |
| struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
| /* |
| * Hash table of struct kvm_mmu_page. |
| */ |
| struct list_head active_mmu_pages; |
| struct kvm_pic *vpic; |
| struct kvm_ioapic *vioapic; |
| struct kvm_pit *vpit; |
| |
| int round_robin_prev_vcpu; |
| unsigned int tss_addr; |
| struct page *apic_access_page; |
| |
| gpa_t wall_clock; |
| |
| struct page *ept_identity_pagetable; |
| bool ept_identity_pagetable_done; |
| }; |
| |
| struct kvm_vm_stat { |
| u32 mmu_shadow_zapped; |
| u32 mmu_pte_write; |
| u32 mmu_pte_updated; |
| u32 mmu_pde_zapped; |
| u32 mmu_flooded; |
| u32 mmu_recycled; |
| u32 mmu_cache_miss; |
| u32 remote_tlb_flush; |
| u32 lpages; |
| }; |
| |
| struct kvm_vcpu_stat { |
| u32 pf_fixed; |
| u32 pf_guest; |
| u32 tlb_flush; |
| u32 invlpg; |
| |
| u32 exits; |
| u32 io_exits; |
| u32 mmio_exits; |
| u32 signal_exits; |
| u32 irq_window_exits; |
| u32 nmi_window_exits; |
| u32 halt_exits; |
| u32 halt_wakeup; |
| u32 request_irq_exits; |
| u32 irq_exits; |
| u32 host_state_reload; |
| u32 efer_reload; |
| u32 fpu_reload; |
| u32 insn_emulation; |
| u32 insn_emulation_fail; |
| u32 hypercalls; |
| }; |
| |
| struct descriptor_table { |
| u16 limit; |
| unsigned long base; |
| } __attribute__((packed)); |
| |
| struct kvm_x86_ops { |
| int (*cpu_has_kvm_support)(void); /* __init */ |
| int (*disabled_by_bios)(void); /* __init */ |
| void (*hardware_enable)(void *dummy); /* __init */ |
| void (*hardware_disable)(void *dummy); |
| void (*check_processor_compatibility)(void *rtn); |
| int (*hardware_setup)(void); /* __init */ |
| void (*hardware_unsetup)(void); /* __exit */ |
| bool (*cpu_has_accelerated_tpr)(void); |
| |
| /* Create, but do not attach this VCPU */ |
| struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id); |
| void (*vcpu_free)(struct kvm_vcpu *vcpu); |
| int (*vcpu_reset)(struct kvm_vcpu *vcpu); |
| |
| void (*prepare_guest_switch)(struct kvm_vcpu *vcpu); |
| void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); |
| void (*vcpu_put)(struct kvm_vcpu *vcpu); |
| |
| int (*set_guest_debug)(struct kvm_vcpu *vcpu, |
| struct kvm_debug_guest *dbg); |
| void (*guest_debug_pre)(struct kvm_vcpu *vcpu); |
| int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); |
| int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); |
| u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); |
| void (*get_segment)(struct kvm_vcpu *vcpu, |
| struct kvm_segment *var, int seg); |
| int (*get_cpl)(struct kvm_vcpu *vcpu); |
| void (*set_segment)(struct kvm_vcpu *vcpu, |
| struct kvm_segment *var, int seg); |
| void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); |
| void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); |
| void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); |
| void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
| void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); |
| void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); |
| void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); |
| void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); |
| void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); |
| void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); |
| unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); |
| void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, |
| int *exception); |
| void (*cache_regs)(struct kvm_vcpu *vcpu); |
| void (*decache_regs)(struct kvm_vcpu *vcpu); |
| unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); |
| void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); |
| |
| void (*tlb_flush)(struct kvm_vcpu *vcpu); |
| |
| void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); |
| int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu); |
| void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); |
| void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
| unsigned char *hypercall_addr); |
| int (*get_irq)(struct kvm_vcpu *vcpu); |
| void (*set_irq)(struct kvm_vcpu *vcpu, int vec); |
| void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr, |
| bool has_error_code, u32 error_code); |
| bool (*exception_injected)(struct kvm_vcpu *vcpu); |
| void (*inject_pending_irq)(struct kvm_vcpu *vcpu); |
| void (*inject_pending_vectors)(struct kvm_vcpu *vcpu, |
| struct kvm_run *run); |
| |
| int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); |
| int (*get_tdp_level)(void); |
| }; |
| |
| extern struct kvm_x86_ops *kvm_x86_ops; |
| |
| int kvm_mmu_module_init(void); |
| void kvm_mmu_module_exit(void); |
| |
| void kvm_mmu_destroy(struct kvm_vcpu *vcpu); |
| int kvm_mmu_create(struct kvm_vcpu *vcpu); |
| int kvm_mmu_setup(struct kvm_vcpu *vcpu); |
| void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte); |
| void kvm_mmu_set_base_ptes(u64 base_pte); |
| void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask, |
| u64 dirty_mask, u64 nx_mask, u64 x_mask); |
| |
| int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); |
| void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot); |
| void kvm_mmu_zap_all(struct kvm *kvm); |
| unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm); |
| void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages); |
| |
| int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3); |
| |
| int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, |
| const void *val, int bytes); |
| int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes, |
| gpa_t addr, unsigned long *ret); |
| |
| extern bool tdp_enabled; |
| |
| enum emulation_result { |
| EMULATE_DONE, /* no further processing */ |
| EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ |
| EMULATE_FAIL, /* can't emulate this instruction */ |
| }; |
| |
| #define EMULTYPE_NO_DECODE (1 << 0) |
| #define EMULTYPE_TRAP_UD (1 << 1) |
| int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, |
| unsigned long cr2, u16 error_code, int emulation_type); |
| void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context); |
| void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); |
| void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); |
| void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, |
| unsigned long *rflags); |
| |
| unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); |
| void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, |
| unsigned long *rflags); |
| void kvm_enable_efer_bits(u64); |
| int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data); |
| int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); |
| |
| struct x86_emulate_ctxt; |
| |
| int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
| int size, unsigned port); |
| int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
| int size, unsigned long count, int down, |
| gva_t address, int rep, unsigned port); |
| void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
| int kvm_emulate_halt(struct kvm_vcpu *vcpu); |
| int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); |
| int emulate_clts(struct kvm_vcpu *vcpu); |
| int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr, |
| unsigned long *dest); |
| int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, |
| unsigned long value); |
| |
| void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); |
| int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, |
| int type_bits, int seg); |
| |
| int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason); |
| |
| void kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); |
| void kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); |
| void kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); |
| void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); |
| unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu); |
| void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw); |
| void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); |
| |
| int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); |
| int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); |
| |
| void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr); |
| void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); |
| void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2, |
| u32 error_code); |
| |
| void kvm_inject_nmi(struct kvm_vcpu *vcpu); |
| |
| void fx_init(struct kvm_vcpu *vcpu); |
| |
| int emulator_read_std(unsigned long addr, |
| void *val, |
| unsigned int bytes, |
| struct kvm_vcpu *vcpu); |
| int emulator_write_emulated(unsigned long addr, |
| const void *val, |
| unsigned int bytes, |
| struct kvm_vcpu *vcpu); |
| |
| unsigned long segment_base(u16 selector); |
| |
| void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu); |
| void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, |
| const u8 *new, int bytes); |
| int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); |
| void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); |
| int kvm_mmu_load(struct kvm_vcpu *vcpu); |
| void kvm_mmu_unload(struct kvm_vcpu *vcpu); |
| |
| int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); |
| |
| int kvm_fix_hypercall(struct kvm_vcpu *vcpu); |
| |
| int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code); |
| |
| void kvm_enable_tdp(void); |
| |
| int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3); |
| int complete_pio(struct kvm_vcpu *vcpu); |
| |
| static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) |
| { |
| struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); |
| |
| return (struct kvm_mmu_page *)page_private(page); |
| } |
| |
| static inline u16 kvm_read_fs(void) |
| { |
| u16 seg; |
| asm("mov %%fs, %0" : "=g"(seg)); |
| return seg; |
| } |
| |
| static inline u16 kvm_read_gs(void) |
| { |
| u16 seg; |
| asm("mov %%gs, %0" : "=g"(seg)); |
| return seg; |
| } |
| |
| static inline u16 kvm_read_ldt(void) |
| { |
| u16 ldt; |
| asm("sldt %0" : "=g"(ldt)); |
| return ldt; |
| } |
| |
| static inline void kvm_load_fs(u16 sel) |
| { |
| asm("mov %0, %%fs" : : "rm"(sel)); |
| } |
| |
| static inline void kvm_load_gs(u16 sel) |
| { |
| asm("mov %0, %%gs" : : "rm"(sel)); |
| } |
| |
| static inline void kvm_load_ldt(u16 sel) |
| { |
| asm("lldt %0" : : "rm"(sel)); |
| } |
| |
| static inline void kvm_get_idt(struct descriptor_table *table) |
| { |
| asm("sidt %0" : "=m"(*table)); |
| } |
| |
| static inline void kvm_get_gdt(struct descriptor_table *table) |
| { |
| asm("sgdt %0" : "=m"(*table)); |
| } |
| |
| static inline unsigned long kvm_read_tr_base(void) |
| { |
| u16 tr; |
| asm("str %0" : "=g"(tr)); |
| return segment_base(tr); |
| } |
| |
| #ifdef CONFIG_X86_64 |
| static inline unsigned long read_msr(unsigned long msr) |
| { |
| u64 value; |
| |
| rdmsrl(msr, value); |
| return value; |
| } |
| #endif |
| |
| static inline void kvm_fx_save(struct i387_fxsave_struct *image) |
| { |
| asm("fxsave (%0)":: "r" (image)); |
| } |
| |
| static inline void kvm_fx_restore(struct i387_fxsave_struct *image) |
| { |
| asm("fxrstor (%0)":: "r" (image)); |
| } |
| |
| static inline void kvm_fx_finit(void) |
| { |
| asm("finit"); |
| } |
| |
| static inline u32 get_rdx_init_val(void) |
| { |
| return 0x600; /* P6 family */ |
| } |
| |
| static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code) |
| { |
| kvm_queue_exception_e(vcpu, GP_VECTOR, error_code); |
| } |
| |
| #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" |
| #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" |
| #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" |
| #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" |
| #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" |
| #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" |
| #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" |
| #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" |
| #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" |
| #define ASM_VMX_INVEPT ".byte 0x66, 0x0f, 0x38, 0x80, 0x08" |
| #define ASM_VMX_INVVPID ".byte 0x66, 0x0f, 0x38, 0x81, 0x08" |
| |
| #define MSR_IA32_TIME_STAMP_COUNTER 0x010 |
| |
| #define TSS_IOPB_BASE_OFFSET 0x66 |
| #define TSS_BASE_SIZE 0x68 |
| #define TSS_IOPB_SIZE (65536 / 8) |
| #define TSS_REDIRECTION_SIZE (256 / 8) |
| #define RMODE_TSS_SIZE \ |
| (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) |
| |
| enum { |
| TASK_SWITCH_CALL = 0, |
| TASK_SWITCH_IRET = 1, |
| TASK_SWITCH_JMP = 2, |
| TASK_SWITCH_GATE = 3, |
| }; |
| |
| #define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \ |
| trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ |
| vcpu, 5, d1, d2, d3, d4, d5) |
| #define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \ |
| trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ |
| vcpu, 4, d1, d2, d3, d4, 0) |
| #define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \ |
| trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ |
| vcpu, 3, d1, d2, d3, 0, 0) |
| #define KVMTRACE_2D(evt, vcpu, d1, d2, name) \ |
| trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ |
| vcpu, 2, d1, d2, 0, 0, 0) |
| #define KVMTRACE_1D(evt, vcpu, d1, name) \ |
| trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ |
| vcpu, 1, d1, 0, 0, 0, 0) |
| #define KVMTRACE_0D(evt, vcpu, name) \ |
| trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \ |
| vcpu, 0, 0, 0, 0, 0, 0) |
| |
| #ifdef CONFIG_64BIT |
| #define KVM_EX_ENTRY ".quad" |
| #else |
| #define KVM_EX_ENTRY ".long" |
| #endif |
| |
| /* |
| * Hardware virtualization extension instructions may fault if a |
| * reboot turns off virtualization while processes are running. |
| * Trap the fault and ignore the instruction if that happens. |
| */ |
| asmlinkage void kvm_handle_fault_on_reboot(void); |
| |
| #define __kvm_handle_fault_on_reboot(insn) \ |
| "666: " insn "\n\t" \ |
| ".pushsection .text.fixup, \"ax\" \n" \ |
| "667: \n\t" \ |
| "push $666b \n\t" \ |
| "jmp kvm_handle_fault_on_reboot \n\t" \ |
| ".popsection \n\t" \ |
| ".pushsection __ex_table, \"a\" \n\t" \ |
| KVM_EX_ENTRY " 666b, 667b \n\t" \ |
| ".popsection" |
| |
| #endif |