/* * GPL HEADER START * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * GPL HEADER END * * Copyright 2011 various Linux Kernel contributors. * Copyright 2018 Joyent, Inc. */ #ifndef __KVM_X86_HOST_H #define __KVM_X86_HOST_H #include #include #include #include #include #include #include #include #include #include "kvm.h" #include "kvm_types.h" #ifndef offsetof #define offsetof(s, m) ((size_t)(&((s *)0)->m)) #endif #define MCG_CTL_P (1ULL<<8) /* MCG_CTL register available */ #define KVM_MAX_MCE_BANKS 32 #define KVM_MCE_CAP_SUPPORTED MCG_CTL_P #define KVM_MAX_VCPUS 64 #define KVM_MEMORY_SLOTS 32 /* memory slots that are not exposted to userspace */ #define KVM_PRIVATE_MEM_SLOTS 4 /* x86 specific */ #define KVM_PIO_PAGE_OFFSET 1 #define KVM_COALESCED_MMIO_PAGE_OFFSET 2 #define KVM_VCPU_MMAP_LENGTH 3 #define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1) #define CR3_NONPAE_RESERVED_BITS ((PAGESIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD)) #define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS | \ 0xFFFFFF0000000000ULL) #define INVALID_PAGE (~(hpa_t)0) #define UNMAPPED_GVA (~(gpa_t)0) /* KVM Hugepage definitions for x86 */ #define KVM_NR_PAGE_SIZES 3 #define KVM_HPAGE_SHIFT(x) (PAGESHIFT + (((x) - 1) * 9)) #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) / PAGESIZE) #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 AC_VECTOR 17 #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_FIXED_MTRR_REGION 88 #define KVM_NR_VAR_MTRR 8 struct kvm_vcpu; struct kvm; 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, 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, VCPU_REGS_RIP, NR_VCPU_REGS }; enum kvm_reg_ex { VCPU_EXREG_PDPTR = 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 "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. */ #define KVM_NR_MEM_OBJS 40 struct kvm_objects { void *kma_object; void *kpm_object; }; typedef struct kvm_mmu_memory_cache { int nobjs; /* current number free in cache */ struct kvm_objects objects[KVM_NR_MEM_OBJS]; } kvm_mmu_memory_cache_t; #define NR_PTE_CHAIN_ENTRIES 5 typedef struct kvm_pte_chain { uint64_t *parent_ptes[NR_PTE_CHAIN_ENTRIES]; struct list_node link; } kvm_pte_chain_t; /* * 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 glevels:4; unsigned level:4; unsigned quadrant:2; unsigned pad_for_nice_hex_output:6; unsigned direct:1; unsigned access:3; unsigned invalid:1; unsigned cr4_pge:1; unsigned nxe:1; unsigned cr0_wp:1; }; }; typedef struct kvm_mmu_page { avl_node_t kmp_avlnode; struct list_node link; struct list_node hash_link; struct list_node oos_link; hpa_t hpa; /* * The following two entries are used to key the shadow page in the * hash table. */ gfn_t gfn; union kvm_mmu_page_role role; uint64_t *spt; char *sptkma; uintptr_t kmp_avlspt; /* hold the gfn of each spte inside spt */ gfn_t *gfns; char *gfnskma; /* * One bit set per slot which has memory * in this shadow page. */ unsigned long slot_bitmap[BT_BITOUL(KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS)]; int multimapped; /* More than one parent_pte? */ int root_count; /* Currently serving as active root */ int unsync; unsigned int unsync_children; union { uint64_t *parent_pte; /* !multimapped */ list_t parent_ptes; /* multimapped, kvm_pte_chain */ }; struct kvm_vcpu *vcpu; /* needed for free */ unsigned long unsync_child_bitmap[BT_BITOUL(512)]; } kvm_mmu_page_t; typedef struct kvm_pv_mmu_op_buffer { void *ptr; unsigned len; unsigned processed; char pad[2]; char buf[512]; } kvm_pv_mmu_op_buffer_t; typedef struct kvm_pio_request { unsigned long count; int cur_count; gva_t guest_gva; int in; int port; int size; int string; int down; int rep; } kvm_pio_request_t; /* * 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. */ typedef struct kvm_mmu { void (*new_cr3)(struct kvm_vcpu *vcpu); int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, uint32_t err); void (*free)(struct kvm_vcpu *vcpu); gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, uint32_t access, uint32_t *error); 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); hpa_t root_hpa; int root_level; int shadow_root_level; union kvm_mmu_page_role base_role; uint64_t *pae_root; void *alloc_pae_root; uint64_t rsvd_bits_mask[2][4]; } kvm_mmu_t; /* * These structs MUST NOT be changed. * They are the ABI between hypervisor and guest OS. * Both Xen and KVM are using this. * * pvclock_vcpu_time_info holds the system time and the tsc timestamp * of the last update. So the guest can use the tsc delta to get a * more precise system time. There is one per virtual cpu. * * pvclock_wall_clock references the point in time when the system * time was zero (usually boot time), thus the guest calculates the * current wall clock by adding the system time. * * Protocol for the "version" fields is: hypervisor raises it (making * it uneven) before it starts updating the fields and raises it again * (making it even) when it is done. Thus the guest can make sure the * time values it got are consistent by checking the version before * and after reading them. */ struct pvclock_wall_clock { uint32_t version; uint32_t sec; uint32_t nsec; } __attribute__((__packed__)); typedef struct pvclock_wall_clock pvclock_wall_clock_t; struct pvclock_vcpu_time_info { uint32_t version; uint32_t pad0; uint64_t tsc_timestamp; uint64_t system_time; uint32_t tsc_to_system_mul; char tsc_shift; unsigned char flags; unsigned char pad[2]; } __attribute__((__packed__)); /* 32 bytes */ typedef struct pvclock_vcpu_time_info pvclock_vcpu_time_info_t; /* Values for pvclock_vcpu_time_info_t`flags: */ #define PVCLOCK_TSC_STABLE_BIT (1 << 0) typedef struct msi_msg { uint32_t address_lo; /* low 32 bits of msi msg. address */ uint32_t address_hi; /* high 32 bits of msi msg. address */ uint32_t data; /* 16 bits of msi msg. data */ } msi_msg_t; /* * In the Intel processor's MTRR interface, the MTRR type is always held in an 8 * bit field: */ typedef unsigned char mtrr_type; #define MTRR_NUM_FIXED_RANGES 88 #define MTRR_MAX_VAR_RANGES 256 typedef struct mtrr_var_range { uint32_t base_lo; uint32_t base_hi; uint32_t mask_lo; uint32_t mask_hi; } mtrr_var_range_t; typedef struct mtrr_state_type { struct mtrr_var_range var_ranges[MTRR_MAX_VAR_RANGES]; mtrr_type fixed_ranges[MTRR_NUM_FIXED_RANGES]; unsigned char enabled; unsigned char have_fixed; mtrr_type def_type; } mtrr_state_type_t; typedef struct kvm_vcpu_arch { uint64_t tsc_offset; /* * rip and regs accesses must go through * kvm_{register,rip}_{read,write} functions. */ unsigned long regs[NR_VCPU_REGS]; uint64_t regs_avail; uint64_t 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; uint32_t hflags; uint64_t pdptrs[4]; /* pae */ uint64_t efer; uint64_t apic_base; struct kvm_lapic *apic; /* kernel irqchip context */ int32_t apic_arb_prio; int mp_state; int sipi_vector; uint64_t ia32_misc_enable_msr; int tpr_access_reporting; struct kvm_mmu 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; uint64_t *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 */ unsigned long mmu_seq; } update_pte; hma_fpu_t *guest_fpu; gva_t mmio_fault_cr2; struct kvm_pio_request pio; void *pio_data; uint8_t event_exit_inst_len; struct kvm_queued_exception { int pending; int has_error_code; uint8_t nr; uint32_t error_code; } exception; struct kvm_queued_interrupt { int pending; int soft; uint8_t 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; gpa_t time_addr; gpa_t time_val; hrtime_t time_update; int nmi_pending; int nmi_injected; struct mtrr_state_type mtrr_state; uint64_t 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]; uint64_t mcg_cap; uint64_t mcg_status; uint64_t mcg_ctl; uint64_t *mce_banks; /* used for guest single stepping over the given code position */ uint16_t singlestep_cs; unsigned long singlestep_rip; /* fields used by HYPER-V emulation */ uint64_t hv_vapic; } kvm_vcpu_arch_t; typedef struct kvm_mem_alias { gfn_t base_gfn; unsigned long npages; gfn_t target_gfn; #define KVM_ALIAS_INVALID 1UL unsigned long flags; } kvm_mem_alias_t; #define KVM_ARCH_HAS_UNALIAS_INSTANTIATION typedef struct kvm_mem_aliases { struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; int naliases; } kvm_mem_aliases_t; typedef struct kvm_xen_hvm_config { uint32_t flags; uint32_t msr; uint64_t blob_addr_32; uint64_t blob_addr_64; unsigned char blob_size_32; unsigned char blob_size_64; unsigned char pad2[30]; } kvm_xen_hvm_config_t; typedef struct kvm_arch { struct kvm_mem_aliases *aliases; unsigned int n_free_mmu_pages; unsigned int n_requested_mmu_pages; unsigned int n_alloc_mmu_pages; list_t mmu_page_hash[KVM_NUM_MMU_PAGES]; /* * Hash table of struct kvm_mmu_page. */ list_t active_mmu_pages; /* list of all kvm_mmu_page */ list_t 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; uint64_t tss_addr; page_t *apic_access_page; gpa_t wall_clock; page_t *ept_identity_pagetable; int ept_identity_pagetable_done; gpa_t ept_identity_map_addr; unsigned long irq_sources_bitmap; uint64_t tsc_offset; struct timespec boot_wallclock; hrtime_t boot_hrtime; struct kvm_xen_hvm_config xen_hvm_config; uint8_t need_xcr0; uint64_t host_xcr0; /* fields used by HYPER-V emulation */ uint64_t hv_guest_os_id; uint64_t hv_hypercall; } kvm_arch_t; typedef struct kvm_vm_stat { uint32_t mmu_shadow_zapped; uint32_t mmu_pte_write; uint32_t mmu_pte_updated; uint32_t mmu_pde_zapped; uint32_t mmu_flooded; uint32_t mmu_recycled; uint32_t mmu_cache_miss; uint32_t mmu_unsync; uint32_t remote_tlb_flush; uint32_t lpages; } kvm_vm_stat_t; typedef struct kvm_vcpu_stat { uint32_t pf_fixed; uint32_t pf_guest; uint32_t tlb_flush; uint32_t invlpg; uint32_t exits; uint32_t io_exits; uint32_t mmio_exits; uint32_t signal_exits; uint32_t irq_window_exits; uint32_t nmi_window_exits; uint32_t halt_exits; uint32_t halt_wakeup; uint32_t request_irq_exits; uint32_t irq_exits; uint32_t host_state_reload; uint32_t efer_reload; uint32_t fpu_reload; uint32_t insn_emulation; uint32_t insn_emulation_fail; uint32_t hypercalls; uint32_t irq_injections; uint32_t nmi_injections; } kvm_vcpu_stat_t; struct descriptor_table { unsigned short limit; unsigned long base; } __attribute__((packed)); typedef struct descriptor_table descriptor_table_t; typedef struct kvm_x86_ops { int (*cpu_has_kvm_support)(void); int (*disabled_by_bios)(void); int (*hardware_enable)(void *); void (*hardware_disable)(void *); void (*check_processor_compatibility)(void *); int (*hardware_setup)(void); void (*hardware_unsetup)(void); int (*cpu_has_accelerated_tpr)(void); void (*cpuid_update)(struct kvm_vcpu *); /* Create, but do not attach this VCPU */ struct kvm_vcpu *(*vcpu_create)(struct kvm *, unsigned); void (*vcpu_free)(struct kvm_vcpu *vcpu); int (*vcpu_reset)(struct kvm_vcpu *vcpu); void (*prepare_guest_switch)(struct kvm_vcpu *); void (*vcpu_load)(struct kvm_vcpu *, int); void (*vcpu_put)(struct kvm_vcpu *); void (*set_guest_debug)(struct kvm_vcpu *, struct kvm_guest_debug *); int (*get_msr)(struct kvm_vcpu *, uint32_t, uint64_t *); int (*set_msr)(struct kvm_vcpu *, uint32_t, uint64_t); uint64_t (*get_segment_base)(struct kvm_vcpu *, int); void (*get_segment)(struct kvm_vcpu *, struct kvm_segment *, int); int (*get_cpl)(struct kvm_vcpu *); void (*set_segment)(struct kvm_vcpu *, struct kvm_segment *, int); void (*get_cs_db_l_bits)(struct kvm_vcpu *, int *, int *); void (*decache_cr0_guest_bits)(struct kvm_vcpu *); void (*decache_cr4_guest_bits)(struct kvm_vcpu *); void (*set_cr0)(struct kvm_vcpu *, unsigned long); void (*set_cr3)(struct kvm_vcpu *, unsigned long); void (*set_cr4)(struct kvm_vcpu *, unsigned long); void (*set_efer)(struct kvm_vcpu *, uint64_t); void (*get_idt)(struct kvm_vcpu *, struct descriptor_table *); void (*set_idt)(struct kvm_vcpu *, struct descriptor_table *); void (*get_gdt)(struct kvm_vcpu *, struct descriptor_table *); void (*set_gdt)(struct kvm_vcpu *, struct descriptor_table *); int (*get_dr)(struct kvm_vcpu *, int, unsigned long *); int (*set_dr)(struct kvm_vcpu *, int, unsigned long); void (*cache_reg)(struct kvm_vcpu *, enum kvm_reg); unsigned long (*get_rflags)(struct kvm_vcpu *); void (*set_rflags)(struct kvm_vcpu *, unsigned long); void (*fpu_activate)(struct kvm_vcpu *); void (*fpu_deactivate)(struct kvm_vcpu *); void (*tlb_flush)(struct kvm_vcpu *); void (*run)(struct kvm_vcpu *); int (*handle_exit)(struct kvm_vcpu *); void (*skip_emulated_instruction)(struct kvm_vcpu *); void (*set_interrupt_shadow)(struct kvm_vcpu *, int); uint32_t (*get_interrupt_shadow)(struct kvm_vcpu *, int); void (*patch_hypercall)(struct kvm_vcpu *, unsigned char *); void (*set_irq)(struct kvm_vcpu *); void (*set_nmi)(struct kvm_vcpu *); void (*queue_exception)(struct kvm_vcpu *, unsigned, int, uint32_t); int (*interrupt_allowed)(struct kvm_vcpu *); int (*nmi_allowed)(struct kvm_vcpu *); int (*get_nmi_mask)(struct kvm_vcpu *); void (*set_nmi_mask)(struct kvm_vcpu *, int); void (*enable_nmi_window)(struct kvm_vcpu *); void (*enable_irq_window)(struct kvm_vcpu *); void (*update_cr8_intercept)(struct kvm_vcpu *, int, int); int (*set_tss_addr)(struct kvm *, uintptr_t); int (*get_tdp_level)(void); uint64_t (*get_mt_mask)(struct kvm_vcpu *, gfn_t, int); int (*get_lpage_level)(void); int (*rdtscp_supported)(void); const struct trace_print_flags *exit_reasons_str; } kvm_x86_ops_t; extern struct kvm_x86_ops *kvm_x86_ops; extern int kvm_mmu_module_init(void); extern void kvm_mmu_module_exit(void); extern void kvm_mmu_destroy(struct kvm_vcpu *); extern int kvm_mmu_create(struct kvm_vcpu *); extern int kvm_mmu_setup(struct kvm_vcpu *); extern void kvm_mmu_set_nonpresent_ptes(uint64_t, uint64_t); extern void kvm_mmu_set_base_ptes(uint64_t); extern void kvm_mmu_set_mask_ptes(uint64_t, uint64_t, uint64_t, uint64_t, uint64_t); extern int kvm_mmu_reset_context(struct kvm_vcpu *); extern void kvm_mmu_slot_remove_write_access(struct kvm *, int); extern void kvm_mmu_zap_all(struct kvm *); unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *); extern void kvm_mmu_change_mmu_pages(struct kvm *, unsigned int); extern int load_pdptrs(struct kvm_vcpu *, unsigned long); extern int emulator_write_phys(struct kvm_vcpu *, gpa_t, const void *, int); extern int kvm_pv_mmu_op(struct kvm_vcpu *, unsigned long, gpa_t, unsigned long *); extern uint8_t kvm_get_guest_memory_type(struct kvm_vcpu *, gfn_t); extern int 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) #define EMULTYPE_SKIP (1 << 2) extern int emulate_instruction(struct kvm_vcpu *, unsigned long, uint16_t, int); extern void kvm_report_emulation_failure(struct kvm_vcpu *, const char *); extern void realmode_lgdt(struct kvm_vcpu *, uint16_t, unsigned long); extern void realmode_lidt(struct kvm_vcpu *, uint16_t, unsigned long); extern void realmode_lmsw(struct kvm_vcpu *, unsigned long, unsigned long *); extern unsigned long realmode_get_cr(struct kvm_vcpu *, int); extern void realmode_set_cr(struct kvm_vcpu *, int, unsigned long, unsigned long *); extern void kvm_enable_efer_bits(uint64_t); extern int kvm_get_msr(struct kvm_vcpu *, uint32_t, uint64_t *); extern int kvm_set_msr(struct kvm_vcpu *, uint32_t, uint64_t); extern int kvm_emulate_pio(struct kvm_vcpu *, int, int, unsigned); extern int kvm_emulate_pio_string(struct kvm_vcpu *, int, int, unsigned long, int, gva_t, int, unsigned); extern void kvm_emulate_cpuid(struct kvm_vcpu *); extern int kvm_emulate_halt(struct kvm_vcpu *); extern int emulate_invlpg(struct kvm_vcpu *, gva_t); extern int emulate_clts(struct kvm_vcpu *); extern int emulator_get_dr(struct x86_emulate_ctxt *, int, unsigned long *); extern int emulator_set_dr(struct x86_emulate_ctxt *, int, unsigned long); extern void kvm_get_segment(struct kvm_vcpu *, struct kvm_segment *, int); extern int kvm_load_segment_descriptor(struct kvm_vcpu *, uint16_t, int); extern int kvm_task_switch(struct kvm_vcpu *, uint16_t, int); extern void kvm_set_cr0(struct kvm_vcpu *, unsigned long); extern void kvm_set_cr3(struct kvm_vcpu *, unsigned long); extern void kvm_set_cr4(struct kvm_vcpu *, unsigned long); extern void kvm_set_cr8(struct kvm_vcpu *, unsigned long); extern unsigned long kvm_get_cr8(struct kvm_vcpu *); extern void kvm_lmsw(struct kvm_vcpu *, unsigned long); extern int kvm_get_msr_common(struct kvm_vcpu *, uint32_t, uint64_t *); extern int kvm_set_msr_common(struct kvm_vcpu *, uint32_t, uint64_t); extern unsigned long kvm_get_rflags(struct kvm_vcpu *); extern void kvm_set_rflags(struct kvm_vcpu *, unsigned long); extern void kvm_queue_exception(struct kvm_vcpu *, unsigned); extern void kvm_queue_exception_e(struct kvm_vcpu *, unsigned, uint32_t); extern void kvm_inject_page_fault(struct kvm_vcpu *, unsigned long, uint32_t); extern int kvm_require_cpl(struct kvm_vcpu *, int); extern int kvm_pic_set_irq(void *, int, int); extern void kvm_inject_nmi(struct kvm_vcpu *); extern void fx_init(struct kvm_vcpu *); extern int emulator_write_emulated(unsigned long, const void *, unsigned int, struct kvm_vcpu *); /* * FIXME: Accessing the desc_struct through its fields is more elegant, * and should be the one valid thing to do. However, a lot of open code * still touches the a and b accessors, and doing this allow us to do it * incrementally. We keep the signature as a struct, rather than an union, * so we can get rid of it transparently in the future -- glommer */ /* 8 byte segment descriptor */ struct desc_struct { union { struct { unsigned int a; unsigned int b; }a; struct { unsigned short limit0; unsigned short base0; unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1; unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8; }b; }c; } __attribute__((packed)); extern unsigned long segment_base(uint16_t); extern void kvm_mmu_flush_tlb(struct kvm_vcpu *); extern void kvm_mmu_pte_write(struct kvm_vcpu *, gpa_t, const uint8_t *, int, int); extern int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *, gva_t); extern void __kvm_mmu_free_some_pages(struct kvm_vcpu *); extern int kvm_mmu_load(struct kvm_vcpu *); extern void kvm_mmu_unload(struct kvm_vcpu *); extern void kvm_mmu_sync_roots(struct kvm_vcpu *); extern gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *, gva_t, uint32_t *); extern gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *, gva_t, uint32_t *); extern gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *, gva_t, uint32_t *); extern gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *, gva_t, uint32_t *); extern int kvm_emulate_hypercall(struct kvm_vcpu *); extern int kvm_fix_hypercall(struct kvm_vcpu *); extern int kvm_mmu_page_fault(struct kvm_vcpu *, gva_t, uint32_t); extern void kvm_mmu_invlpg(struct kvm_vcpu *, gva_t); extern void kvm_enable_tdp(void); extern void kvm_disable_tdp(void); extern int load_pdptrs(struct kvm_vcpu *, unsigned long); extern int complete_pio(struct kvm_vcpu *); extern int kvm_check_iopl(struct kvm_vcpu *); extern struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *, gfn_t); extern struct kvm_mmu_page *page_header(struct kvm *, hpa_t); extern unsigned short kvm_read_fs(void); extern unsigned short kvm_read_gs(void); extern unsigned short kvm_read_ldt(void); extern void kvm_load_fs(unsigned short); extern void kvm_load_gs(unsigned short); extern void kvm_load_ldt(unsigned short); extern void kvm_get_idt(struct descriptor_table *); extern void kvm_get_gdt(struct descriptor_table *); extern unsigned long find_first_zero_bit(const unsigned long *, unsigned long); extern unsigned long kvm_read_tr_base(void); extern unsigned long read_msr(unsigned long); extern uint32_t get_rdx_init_val(void); extern void kvm_inject_gp(struct kvm_vcpu *, uint32_t); #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) /* * These definitions used to exist in asm.h. However because most of the file * was unnecessary, they have been moved into here. */ #define __ASM_FORM(x) " " #x " " #define __ASM_SEL(a, b) __ASM_FORM(b) #define __ASM_SIZE(inst) __ASM_SEL(inst##l, inst##q) #define _ASM_PTR __ASM_SEL(.long, .quad) /* * 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. */ #define __kvm_handle_fault_on_reboot(insn) \ "666: " insn "\n\t" \ ".pushsection .fixup, \"ax\" \n" \ "667: \n\t" \ __ASM_SIZE(push) " $666b \n\t" \ ".popsection \n\t" \ ".pushsection __ex_table, \"a\" \n\t" \ _ASM_PTR " 666b, 667b \n\t" \ ".popsection \n\t" int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); int kvm_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, uint32_t msr); void kvm_set_shared_msr(struct kvm_vcpu *, unsigned index, uint64_t val, uint64_t mask); #define NMI_VECTOR 0x02 #endif