/* SPDX-License-Identifier: GPL-2.0 */ #ifndef ARCH_X86_KVM_X86_H #define ARCH_X86_KVM_X86_H #include <linux/kvm_host.h> #include <asm/fpu/xstate.h> #include <asm/mce.h> #include <asm/pvclock.h> #include "kvm_cache_regs.h" #include "kvm_emulate.h" struct kvm_caps { … }; struct kvm_host_values { … }; void kvm_spurious_fault(void); #define KVM_NESTED_VMENTER_CONSISTENCY_CHECK(consistency_check) … /* * The first...last VMX feature MSRs that are emulated by KVM. This may or may * not cover all known VMX MSRs, as KVM doesn't emulate an MSR until there's an * associated feature that KVM supports for nested virtualization. */ #define KVM_FIRST_EMULATED_VMX_MSR … #define KVM_LAST_EMULATED_VMX_MSR … #define KVM_DEFAULT_PLE_GAP … #define KVM_VMX_DEFAULT_PLE_WINDOW … #define KVM_DEFAULT_PLE_WINDOW_GROW … #define KVM_DEFAULT_PLE_WINDOW_SHRINK … #define KVM_VMX_DEFAULT_PLE_WINDOW_MAX … #define KVM_SVM_DEFAULT_PLE_WINDOW_MAX … #define KVM_SVM_DEFAULT_PLE_WINDOW … static inline unsigned int __grow_ple_window(unsigned int val, unsigned int base, unsigned int modifier, unsigned int max) { … } static inline unsigned int __shrink_ple_window(unsigned int val, unsigned int base, unsigned int modifier, unsigned int min) { … } #define MSR_IA32_CR_PAT_DEFAULT … void kvm_service_local_tlb_flush_requests(struct kvm_vcpu *vcpu); int kvm_check_nested_events(struct kvm_vcpu *vcpu); /* Forcibly leave the nested mode in cases like a vCPU reset */ static inline void kvm_leave_nested(struct kvm_vcpu *vcpu) { … } static inline bool kvm_vcpu_has_run(struct kvm_vcpu *vcpu) { … } static inline bool kvm_is_exception_pending(struct kvm_vcpu *vcpu) { … } static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu) { … } static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector, bool soft) { … } static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu) { … } static inline bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu) { … } static inline bool kvm_exception_is_soft(unsigned int nr) { … } static inline bool is_protmode(struct kvm_vcpu *vcpu) { … } static inline bool is_long_mode(struct kvm_vcpu *vcpu) { … } static inline bool is_64_bit_mode(struct kvm_vcpu *vcpu) { … } static inline bool is_64_bit_hypercall(struct kvm_vcpu *vcpu) { … } static inline bool x86_exception_has_error_code(unsigned int vector) { … } static inline bool mmu_is_nested(struct kvm_vcpu *vcpu) { … } static inline bool is_pae(struct kvm_vcpu *vcpu) { … } static inline bool is_pse(struct kvm_vcpu *vcpu) { … } static inline bool is_paging(struct kvm_vcpu *vcpu) { … } static inline bool is_pae_paging(struct kvm_vcpu *vcpu) { … } static inline u8 vcpu_virt_addr_bits(struct kvm_vcpu *vcpu) { … } static inline bool is_noncanonical_address(u64 la, struct kvm_vcpu *vcpu) { … } static inline void vcpu_cache_mmio_info(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn, unsigned access) { … } static inline bool vcpu_match_mmio_gen(struct kvm_vcpu *vcpu) { … } /* * Clear the mmio cache info for the given gva. If gva is MMIO_GVA_ANY, we * clear all mmio cache info. */ #define MMIO_GVA_ANY … static inline void vcpu_clear_mmio_info(struct kvm_vcpu *vcpu, gva_t gva) { … } static inline bool vcpu_match_mmio_gva(struct kvm_vcpu *vcpu, unsigned long gva) { … } static inline bool vcpu_match_mmio_gpa(struct kvm_vcpu *vcpu, gpa_t gpa) { … } static inline unsigned long kvm_register_read(struct kvm_vcpu *vcpu, int reg) { … } static inline void kvm_register_write(struct kvm_vcpu *vcpu, int reg, unsigned long val) { … } static inline bool kvm_check_has_quirk(struct kvm *kvm, u64 quirk) { … } void kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq, int inc_eip); u64 get_kvmclock_ns(struct kvm *kvm); uint64_t kvm_get_wall_clock_epoch(struct kvm *kvm); bool kvm_get_monotonic_and_clockread(s64 *kernel_ns, u64 *tsc_timestamp); int kvm_read_guest_virt(struct kvm_vcpu *vcpu, gva_t addr, void *val, unsigned int bytes, struct x86_exception *exception); int kvm_write_guest_virt_system(struct kvm_vcpu *vcpu, gva_t addr, void *val, unsigned int bytes, struct x86_exception *exception); int handle_ud(struct kvm_vcpu *vcpu); void kvm_deliver_exception_payload(struct kvm_vcpu *vcpu, struct kvm_queued_exception *ex); int kvm_mtrr_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data); int kvm_mtrr_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); bool kvm_vector_hashing_enabled(void); void kvm_fixup_and_inject_pf_error(struct kvm_vcpu *vcpu, gva_t gva, u16 error_code); int x86_decode_emulated_instruction(struct kvm_vcpu *vcpu, int emulation_type, void *insn, int insn_len); int x86_emulate_instruction(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, int emulation_type, void *insn, int insn_len); fastpath_t handle_fastpath_set_msr_irqoff(struct kvm_vcpu *vcpu); fastpath_t handle_fastpath_hlt(struct kvm_vcpu *vcpu); extern struct kvm_caps kvm_caps; extern struct kvm_host_values kvm_host; extern bool enable_pmu; /* * Get a filtered version of KVM's supported XCR0 that strips out dynamic * features for which the current process doesn't (yet) have permission to use. * This is intended to be used only when enumerating support to userspace, * e.g. in KVM_GET_SUPPORTED_CPUID and KVM_CAP_XSAVE2, it does NOT need to be * used to check/restrict guest behavior as KVM rejects KVM_SET_CPUID{2} if * userspace attempts to enable unpermitted features. */ static inline u64 kvm_get_filtered_xcr0(void) { … } static inline bool kvm_mpx_supported(void) { … } extern unsigned int min_timer_period_us; extern bool enable_vmware_backdoor; extern int pi_inject_timer; extern bool report_ignored_msrs; extern bool eager_page_split; static inline void kvm_pr_unimpl_wrmsr(struct kvm_vcpu *vcpu, u32 msr, u64 data) { … } static inline void kvm_pr_unimpl_rdmsr(struct kvm_vcpu *vcpu, u32 msr) { … } static inline u64 nsec_to_cycles(struct kvm_vcpu *vcpu, u64 nsec) { … } /* Same "calling convention" as do_div: * - divide (n << 32) by base * - put result in n * - return remainder */ #define do_shl32_div32(n, base) … static inline bool kvm_mwait_in_guest(struct kvm *kvm) { … } static inline bool kvm_hlt_in_guest(struct kvm *kvm) { … } static inline bool kvm_pause_in_guest(struct kvm *kvm) { … } static inline bool kvm_cstate_in_guest(struct kvm *kvm) { … } static inline bool kvm_notify_vmexit_enabled(struct kvm *kvm) { … } static __always_inline void kvm_before_interrupt(struct kvm_vcpu *vcpu, enum kvm_intr_type intr) { … } static __always_inline void kvm_after_interrupt(struct kvm_vcpu *vcpu) { … } static inline bool kvm_handling_nmi_from_guest(struct kvm_vcpu *vcpu) { … } static inline bool kvm_pat_valid(u64 data) { … } static inline bool kvm_dr7_valid(u64 data) { … } static inline bool kvm_dr6_valid(u64 data) { … } /* * Trigger machine check on the host. We assume all the MSRs are already set up * by the CPU and that we still run on the same CPU as the MCE occurred on. * We pass a fake environment to the machine check handler because we want * the guest to be always treated like user space, no matter what context * it used internally. */ static inline void kvm_machine_check(void) { … } void kvm_load_guest_xsave_state(struct kvm_vcpu *vcpu); void kvm_load_host_xsave_state(struct kvm_vcpu *vcpu); int kvm_spec_ctrl_test_value(u64 value); bool __kvm_is_valid_cr4(struct kvm_vcpu *vcpu, unsigned long cr4); int kvm_handle_memory_failure(struct kvm_vcpu *vcpu, int r, struct x86_exception *e); int kvm_handle_invpcid(struct kvm_vcpu *vcpu, unsigned long type, gva_t gva); bool kvm_msr_allowed(struct kvm_vcpu *vcpu, u32 index, u32 type); enum kvm_msr_access { … }; /* * Internal error codes that are used to indicate that MSR emulation encountered * an error that should result in #GP in the guest, unless userspace handles it. * Note, '1', '0', and negative numbers are off limits, as they are used by KVM * as part of KVM's lightly documented internal KVM_RUN return codes. * * UNSUPPORTED - The MSR isn't supported, either because it is completely * unknown to KVM, or because the MSR should not exist according * to the vCPU model. * * FILTERED - Access to the MSR is denied by a userspace MSR filter. */ #define KVM_MSR_RET_UNSUPPORTED … #define KVM_MSR_RET_FILTERED … #define __cr4_reserved_bits(__cpu_has, __c) … int kvm_sev_es_mmio_write(struct kvm_vcpu *vcpu, gpa_t src, unsigned int bytes, void *dst); int kvm_sev_es_mmio_read(struct kvm_vcpu *vcpu, gpa_t src, unsigned int bytes, void *dst); int kvm_sev_es_string_io(struct kvm_vcpu *vcpu, unsigned int size, unsigned int port, void *data, unsigned int count, int in); #endif
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