1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * KVM Microsoft Hyper-V emulation 4 * 5 * derived from arch/x86/kvm/x86.c 6 * 7 * Copyright (C) 2006 Qumranet, Inc. 8 * Copyright (C) 2008 Qumranet, Inc. 9 * Copyright IBM Corporation, 2008 10 * Copyright 2010 Red Hat, Inc. and/or its affiliates. 11 * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com> 12 * 13 * Authors: 14 * Avi Kivity <avi@qumranet.com> 15 * Yaniv Kamay <yaniv@qumranet.com> 16 * Amit Shah <amit.shah@qumranet.com> 17 * Ben-Ami Yassour <benami@il.ibm.com> 18 * Andrey Smetanin <asmetanin@virtuozzo.com> 19 */ 20 21 #ifndef __ARCH_X86_KVM_HYPERV_H__ 22 #define __ARCH_X86_KVM_HYPERV_H__ 23 24 #include <linux/kvm_host.h> 25 26 static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu) 27 { 28 return &vcpu->arch.hyperv; 29 } 30 31 static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu) 32 { 33 struct kvm_vcpu_arch *arch; 34 35 arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv); 36 return container_of(arch, struct kvm_vcpu, arch); 37 } 38 39 static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu) 40 { 41 return &vcpu->arch.hyperv.synic; 42 } 43 44 static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic) 45 { 46 return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic)); 47 } 48 49 int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host); 50 int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host); 51 52 bool kvm_hv_hypercall_enabled(struct kvm *kvm); 53 int kvm_hv_hypercall(struct kvm_vcpu *vcpu); 54 55 void kvm_hv_irq_routing_update(struct kvm *kvm); 56 int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint); 57 void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector); 58 int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages); 59 60 void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu); 61 void kvm_hv_vcpu_postcreate(struct kvm_vcpu *vcpu); 62 void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu); 63 64 bool kvm_hv_assist_page_enabled(struct kvm_vcpu *vcpu); 65 bool kvm_hv_get_assist_page(struct kvm_vcpu *vcpu, 66 struct hv_vp_assist_page *assist_page); 67 68 static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu, 69 int timer_index) 70 { 71 return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index]; 72 } 73 74 static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer) 75 { 76 struct kvm_vcpu_hv *hv_vcpu; 77 78 hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv, 79 stimer[0]); 80 return hv_vcpu_to_vcpu(hv_vcpu); 81 } 82 83 static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu) 84 { 85 return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap, 86 HV_SYNIC_STIMER_COUNT); 87 } 88 89 void kvm_hv_process_stimers(struct kvm_vcpu *vcpu); 90 91 void kvm_hv_setup_tsc_page(struct kvm *kvm, 92 struct pvclock_vcpu_time_info *hv_clock); 93 94 void kvm_hv_init_vm(struct kvm *kvm); 95 void kvm_hv_destroy_vm(struct kvm *kvm); 96 int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args); 97 int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid, 98 struct kvm_cpuid_entry2 __user *entries); 99 100 #endif 101