| /* |
| * 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_X86_KVM_HOST_H |
| #define _ASM_X86_KVM_HOST_H |
| |
| #include <linux/types.h> |
| #include <linux/mm.h> |
| #include <linux/mmu_notifier.h> |
| #include <linux/tracepoint.h> |
| #include <linux/cpumask.h> |
| |
| #include <linux/kvm.h> |
| #include <linux/kvm_para.h> |
| #include <linux/kvm_types.h> |
| |
| #include <asm/pvclock-abi.h> |
| #include <asm/desc.h> |
| #include <asm/mtrr.h> |
| #include <asm/msr-index.h> |
| |
| #define KVM_MAX_VCPUS 64 |
| #define KVM_MEMORY_SLOTS 32 |
| /* memory slots that does not exposed to userspace */ |
| #define KVM_PRIVATE_MEM_SLOTS 4 |
| #define KVM_MMIO_SIZE 16 |
| |
| #define KVM_PIO_PAGE_OFFSET 1 |
| #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 |
| |
| #define CR0_RESERVED_BITS \ |
| (~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \ |
| | X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \ |
| | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG)) |
| |
| #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 CR4_RESERVED_BITS \ |
| (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\ |
| | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \ |
| | X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \ |
| | X86_CR4_OSXSAVE \ |
| | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE)) |
| |
| #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR) |
| |
| |
| |
| #define INVALID_PAGE (~(hpa_t)0) |
| #define VALID_PAGE(x) ((x) != INVALID_PAGE) |
| |
| #define UNMAPPED_GVA (~(gpa_t)0) |
| |
| /* KVM Hugepage definitions for x86 */ |
| #define KVM_NR_PAGE_SIZES 3 |
| #define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9) |
| #define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x)) |
| #define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x)) |
| #define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1)) |
| #define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE) |
| |
| #define DE_VECTOR 0 |
| #define DB_VECTOR 1 |
| #define BP_VECTOR 3 |
| #define OF_VECTOR 4 |
| #define BR_VECTOR 5 |
| #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 MF_VECTOR 16 |
| #define MC_VECTOR 18 |
| |
| #define SELECTOR_TI_MASK (1 << 2) |
| #define SELECTOR_RPL_MASK 0x03 |
| |
| #define IOPL_SHIFT 12 |
| |
| #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 80 |
| #define KVM_NR_FIXED_MTRR_REGION 88 |
| #define KVM_NR_VAR_MTRR 8 |
| |
| #define ASYNC_PF_PER_VCPU 64 |
| |
| extern raw_spinlock_t kvm_lock; |
| extern struct list_head vm_list; |
| |
| struct kvm_vcpu; |
| struct kvm; |
| struct kvm_async_pf; |
| |
| enum kvm_reg { |
| 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 |
| VCPU_REGS_RIP, |
| NR_VCPU_REGS |
| }; |
| |
| enum kvm_reg_ex { |
| VCPU_EXREG_PDPTR = NR_VCPU_REGS, |
| VCPU_EXREG_CR3, |
| VCPU_EXREG_RFLAGS, |
| VCPU_EXREG_CPL, |
| }; |
| |
| 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_emulate.h> |
| |
| #define KVM_NR_MEM_OBJS 40 |
| |
| #define KVM_NR_DB_REGS 4 |
| |
| #define DR6_BD (1 << 13) |
| #define DR6_BS (1 << 14) |
| #define DR6_FIXED_1 0xffff0ff0 |
| #define DR6_VOLATILE 0x0000e00f |
| |
| #define DR7_BP_EN_MASK 0x000000ff |
| #define DR7_GE (1 << 9) |
| #define DR7_GD (1 << 13) |
| #define DR7_FIXED_1 0x00000400 |
| #define DR7_VOLATILE 0xffff23ff |
| |
| /* |
| * 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 - direct mapping of virtual to physical mapping at gfn |
| * used for real mode and two-dimensional paging |
| * bits 17:19 - common access permissions for all ptes in this shadow page |
| */ |
| union kvm_mmu_page_role { |
| unsigned word; |
| struct { |
| unsigned level:4; |
| unsigned cr4_pae:1; |
| unsigned quadrant:2; |
| unsigned pad_for_nice_hex_output:6; |
| unsigned direct:1; |
| unsigned access:3; |
| unsigned invalid:1; |
| unsigned nxe:1; |
| unsigned cr0_wp: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; |
| /* |
| * One bit set per slot which has memory |
| * in this shadow page. |
| */ |
| DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS); |
| bool multimapped; /* More than one parent_pte? */ |
| bool unsync; |
| int root_count; /* Currently serving as active root */ |
| unsigned int unsync_children; |
| union { |
| u64 *parent_pte; /* !multimapped */ |
| struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ |
| }; |
| DECLARE_BITMAP(unsync_child_bitmap, 512); |
| }; |
| |
| struct kvm_pv_mmu_op_buffer { |
| void *ptr; |
| unsigned len; |
| unsigned processed; |
| char buf[512] __aligned(sizeof(long)); |
| }; |
| |
| struct kvm_pio_request { |
| unsigned long count; |
| int in; |
| int port; |
| int size; |
| }; |
| |
| /* |
| * 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); |
| void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root); |
| unsigned long (*get_cr3)(struct kvm_vcpu *vcpu); |
| int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err, |
| bool prefault); |
| void (*inject_page_fault)(struct kvm_vcpu *vcpu, |
| struct x86_exception *fault); |
| void (*free)(struct kvm_vcpu *vcpu); |
| gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access, |
| struct x86_exception *exception); |
| gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access); |
| void (*prefetch_page)(struct kvm_vcpu *vcpu, |
| struct kvm_mmu_page *page); |
| int (*sync_page)(struct kvm_vcpu *vcpu, |
| struct kvm_mmu_page *sp); |
| void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva); |
| void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, |
| u64 *spte, const void *pte); |
| hpa_t root_hpa; |
| int root_level; |
| int shadow_root_level; |
| union kvm_mmu_page_role base_role; |
| bool direct_map; |
| |
| u64 *pae_root; |
| u64 *lm_root; |
| u64 rsvd_bits_mask[2][4]; |
| |
| bool nx; |
| |
| u64 pdptrs[4]; /* pae */ |
| }; |
| |
| struct kvm_vcpu_arch { |
| /* |
| * rip and regs accesses must go through |
| * kvm_{register,rip}_{read,write} functions. |
| */ |
| unsigned long regs[NR_VCPU_REGS]; |
| u32 regs_avail; |
| u32 regs_dirty; |
| |
| unsigned long cr0; |
| unsigned long cr0_guest_owned_bits; |
| unsigned long cr2; |
| unsigned long cr3; |
| unsigned long cr4; |
| unsigned long cr4_guest_owned_bits; |
| unsigned long cr8; |
| u32 hflags; |
| u64 efer; |
| u64 apic_base; |
| struct kvm_lapic *apic; /* kernel irqchip context */ |
| int32_t apic_arb_prio; |
| int mp_state; |
| int sipi_vector; |
| u64 ia32_misc_enable_msr; |
| bool tpr_access_reporting; |
| |
| /* |
| * Paging state of the vcpu |
| * |
| * If the vcpu runs in guest mode with two level paging this still saves |
| * the paging mode of the l1 guest. This context is always used to |
| * handle faults. |
| */ |
| struct kvm_mmu mmu; |
| |
| /* |
| * Paging state of an L2 guest (used for nested npt) |
| * |
| * This context will save all necessary information to walk page tables |
| * of the an L2 guest. This context is only initialized for page table |
| * walking and not for faulting since we never handle l2 page faults on |
| * the host. |
| */ |
| struct kvm_mmu nested_mmu; |
| |
| /* |
| * Pointer to the mmu context currently used for |
| * gva_to_gpa translations. |
| */ |
| struct kvm_mmu *walk_mmu; |
| |
| /* only needed in kvm_pv_mmu_op() path, but it's hot so |
| * put it here to avoid allocation */ |
| struct kvm_pv_mmu_op_buffer mmu_op_buffer; |
| |
| 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 fpu guest_fpu; |
| u64 xcr0; |
| |
| struct kvm_pio_request pio; |
| void *pio_data; |
| |
| u8 event_exit_inst_len; |
| |
| struct kvm_queued_exception { |
| bool pending; |
| bool has_error_code; |
| bool reinject; |
| u8 nr; |
| u32 error_code; |
| } exception; |
| |
| struct kvm_queued_interrupt { |
| bool pending; |
| bool soft; |
| u8 nr; |
| } interrupt; |
| |
| 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; |
| bool emulate_regs_need_sync_to_vcpu; |
| bool emulate_regs_need_sync_from_vcpu; |
| |
| gpa_t time; |
| struct pvclock_vcpu_time_info hv_clock; |
| unsigned int hw_tsc_khz; |
| unsigned int time_offset; |
| struct page *time_page; |
| u64 last_guest_tsc; |
| u64 last_kernel_ns; |
| u64 last_tsc_nsec; |
| u64 last_tsc_write; |
| u32 virtual_tsc_khz; |
| bool tsc_catchup; |
| u32 tsc_catchup_mult; |
| s8 tsc_catchup_shift; |
| |
| bool nmi_pending; |
| bool nmi_injected; |
| |
| struct mtrr_state_type mtrr_state; |
| u32 pat; |
| |
| int switch_db_regs; |
| unsigned long db[KVM_NR_DB_REGS]; |
| unsigned long dr6; |
| unsigned long dr7; |
| unsigned long eff_db[KVM_NR_DB_REGS]; |
| |
| u64 mcg_cap; |
| u64 mcg_status; |
| u64 mcg_ctl; |
| u64 *mce_banks; |
| |
| /* used for guest single stepping over the given code position */ |
| unsigned long singlestep_rip; |
| |
| /* fields used by HYPER-V emulation */ |
| u64 hv_vapic; |
| |
| cpumask_var_t wbinvd_dirty_mask; |
| |
| struct { |
| bool halted; |
| gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)]; |
| struct gfn_to_hva_cache data; |
| u64 msr_val; |
| u32 id; |
| bool send_user_only; |
| } apf; |
| }; |
| |
| struct kvm_arch { |
| unsigned int n_used_mmu_pages; |
| unsigned int n_requested_mmu_pages; |
| unsigned int n_max_mmu_pages; |
| atomic_t invlpg_counter; |
| struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
| /* |
| * Hash table of struct kvm_mmu_page. |
| */ |
| struct list_head active_mmu_pages; |
| struct list_head assigned_dev_head; |
| struct iommu_domain *iommu_domain; |
| int iommu_flags; |
| struct kvm_pic *vpic; |
| struct kvm_ioapic *vioapic; |
| struct kvm_pit *vpit; |
| int vapics_in_nmi_mode; |
| |
| unsigned int tss_addr; |
| struct page *apic_access_page; |
| |
| gpa_t wall_clock; |
| |
| struct page *ept_identity_pagetable; |
| bool ept_identity_pagetable_done; |
| gpa_t ept_identity_map_addr; |
| |
| unsigned long irq_sources_bitmap; |
| s64 kvmclock_offset; |
| raw_spinlock_t tsc_write_lock; |
| u64 last_tsc_nsec; |
| u64 last_tsc_offset; |
| u64 last_tsc_write; |
| |
| struct kvm_xen_hvm_config xen_hvm_config; |
| |
| /* fields used by HYPER-V emulation */ |
| u64 hv_guest_os_id; |
| u64 hv_hypercall; |
| |
| #ifdef CONFIG_KVM_MMU_AUDIT |
| int audit_point; |
| #endif |
| }; |
| |
| 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 mmu_unsync; |
| 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; |
| u32 irq_injections; |
| u32 nmi_injections; |
| }; |
| |
| struct x86_instruction_info; |
| |
| struct kvm_x86_ops { |
| int (*cpu_has_kvm_support)(void); /* __init */ |
| int (*disabled_by_bios)(void); /* __init */ |
| int (*hardware_enable)(void *dummy); |
| 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); |
| void (*cpuid_update)(struct kvm_vcpu *vcpu); |
| |
| /* 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); |
| |
| void (*set_guest_debug)(struct kvm_vcpu *vcpu, |
| struct kvm_guest_debug *dbg); |
| 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_cr0_guest_bits)(struct kvm_vcpu *vcpu); |
| void (*decache_cr3)(struct kvm_vcpu *vcpu); |
| 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 desc_ptr *dt); |
| void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); |
| void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); |
| void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt); |
| void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value); |
| void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg); |
| unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); |
| void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); |
| void (*fpu_activate)(struct kvm_vcpu *vcpu); |
| void (*fpu_deactivate)(struct kvm_vcpu *vcpu); |
| |
| void (*tlb_flush)(struct kvm_vcpu *vcpu); |
| |
| void (*run)(struct kvm_vcpu *vcpu); |
| int (*handle_exit)(struct kvm_vcpu *vcpu); |
| void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); |
| void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask); |
| u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask); |
| void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
| unsigned char *hypercall_addr); |
| void (*set_irq)(struct kvm_vcpu *vcpu); |
| void (*set_nmi)(struct kvm_vcpu *vcpu); |
| void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr, |
| bool has_error_code, u32 error_code, |
| bool reinject); |
| void (*cancel_injection)(struct kvm_vcpu *vcpu); |
| int (*interrupt_allowed)(struct kvm_vcpu *vcpu); |
| int (*nmi_allowed)(struct kvm_vcpu *vcpu); |
| bool (*get_nmi_mask)(struct kvm_vcpu *vcpu); |
| void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked); |
| void (*enable_nmi_window)(struct kvm_vcpu *vcpu); |
| void (*enable_irq_window)(struct kvm_vcpu *vcpu); |
| void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr); |
| int (*set_tss_addr)(struct kvm *kvm, unsigned int addr); |
| int (*get_tdp_level)(void); |
| u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio); |
| int (*get_lpage_level)(void); |
| bool (*rdtscp_supported)(void); |
| void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment); |
| |
| void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
| |
| void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry); |
| |
| bool (*has_wbinvd_exit)(void); |
| |
| void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz); |
| void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset); |
| |
| u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc); |
| |
| void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2); |
| |
| int (*check_intercept)(struct kvm_vcpu *vcpu, |
| struct x86_instruction_info *info, |
| enum x86_intercept_stage stage); |
| |
| const struct trace_print_flags *exit_reasons_str; |
| }; |
| |
| struct kvm_arch_async_pf { |
| u32 token; |
| gfn_t gfn; |
| unsigned long cr3; |
| bool direct_map; |
| }; |
| |
| 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_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, struct kvm_mmu *mmu, 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); |
| u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn); |
| |
| extern bool tdp_enabled; |
| |
| /* control of guest tsc rate supported? */ |
| extern bool kvm_has_tsc_control; |
| /* minimum supported tsc_khz for guests */ |
| extern u32 kvm_min_guest_tsc_khz; |
| /* maximum supported tsc_khz for guests */ |
| extern u32 kvm_max_guest_tsc_khz; |
| |
| 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) |
| #define EMULTYPE_SKIP (1 << 2) |
| int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2, |
| int emulation_type, void *insn, int insn_len); |
| |
| static inline int emulate_instruction(struct kvm_vcpu *vcpu, |
| int emulation_type) |
| { |
| return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0); |
| } |
| |
| 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_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port); |
| void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
| int kvm_emulate_halt(struct kvm_vcpu *vcpu); |
| int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu); |
| |
| 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 seg); |
| |
| int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason, |
| bool has_error_code, u32 error_code); |
| |
| int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); |
| int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3); |
| int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); |
| int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8); |
| int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val); |
| int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val); |
| 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_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr); |
| |
| 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); |
| |
| unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu); |
| void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags); |
| |
| 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_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr); |
| void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); |
| void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault); |
| int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, |
| gfn_t gfn, void *data, int offset, int len, |
| u32 access); |
| void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault); |
| bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl); |
| |
| int kvm_pic_set_irq(void *opaque, int irq, int level); |
| |
| void kvm_inject_nmi(struct kvm_vcpu *vcpu); |
| |
| int fx_init(struct kvm_vcpu *vcpu); |
| |
| 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, |
| bool guest_initiated); |
| 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); |
| void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu); |
| gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, |
| struct x86_exception *exception); |
| gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, |
| struct x86_exception *exception); |
| gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, |
| struct x86_exception *exception); |
| gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, |
| struct x86_exception *exception); |
| |
| int kvm_emulate_hypercall(struct kvm_vcpu *vcpu); |
| |
| int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code, |
| void *insn, int insn_len); |
| void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva); |
| |
| void kvm_enable_tdp(void); |
| void kvm_disable_tdp(void); |
| |
| int complete_pio(struct kvm_vcpu *vcpu); |
| bool kvm_check_iopl(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_ldt(void) |
| { |
| u16 ldt; |
| asm("sldt %0" : "=g"(ldt)); |
| return ldt; |
| } |
| |
| static inline void kvm_load_ldt(u16 sel) |
| { |
| asm("lldt %0" : : "rm"(sel)); |
| } |
| |
| #ifdef CONFIG_X86_64 |
| static inline unsigned long read_msr(unsigned long msr) |
| { |
| u64 value; |
| |
| rdmsrl(msr, value); |
| return value; |
| } |
| #endif |
| |
| 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 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 HF_GIF_MASK (1 << 0) |
| #define HF_HIF_MASK (1 << 1) |
| #define HF_VINTR_MASK (1 << 2) |
| #define HF_NMI_MASK (1 << 3) |
| #define HF_IRET_MASK (1 << 4) |
| #define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */ |
| |
| /* |
| * 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_spurious_fault(void); |
| extern bool kvm_rebooting; |
| |
| #define __kvm_handle_fault_on_reboot(insn) \ |
| "666: " insn "\n\t" \ |
| "668: \n\t" \ |
| ".pushsection .fixup, \"ax\" \n" \ |
| "667: \n\t" \ |
| "cmpb $0, kvm_rebooting \n\t" \ |
| "jne 668b \n\t" \ |
| __ASM_SIZE(push) " $666b \n\t" \ |
| "call kvm_spurious_fault \n\t" \ |
| ".popsection \n\t" \ |
| ".pushsection __ex_table, \"a\" \n\t" \ |
| _ASM_PTR " 666b, 667b \n\t" \ |
| ".popsection" |
| |
| #define KVM_ARCH_WANT_MMU_NOTIFIER |
| int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); |
| int kvm_age_hva(struct kvm *kvm, unsigned long hva); |
| int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); |
| void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); |
| int cpuid_maxphyaddr(struct kvm_vcpu *vcpu); |
| int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu); |
| int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu); |
| int kvm_cpu_get_interrupt(struct kvm_vcpu *v); |
| |
| void kvm_define_shared_msr(unsigned index, u32 msr); |
| void kvm_set_shared_msr(unsigned index, u64 val, u64 mask); |
| |
| bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip); |
| |
| void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu, |
| struct kvm_async_pf *work); |
| void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, |
| struct kvm_async_pf *work); |
| void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, |
| struct kvm_async_pf *work); |
| bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu); |
| extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn); |
| |
| void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err); |
| |
| #endif /* _ASM_X86_KVM_HOST_H */ |