1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * KVM Microsoft Hyper-V emulation
5 * derived from arch/x86/kvm/x86.c
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>
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>
21 #ifndef __ARCH_X86_KVM_HYPERV_H__
22 #define __ARCH_X86_KVM_HYPERV_H__
24 #include <linux/kvm_host.h>
27 * The #defines related to the synthetic debugger are required by KDNet, but
28 * they are not documented in the Hyper-V TLFS because the synthetic debugger
29 * functionality has been deprecated and is subject to removal in future
30 * versions of Windows.
32 #define HYPERV_CPUID_SYNDBG_VENDOR_AND_MAX_FUNCTIONS 0x40000080
33 #define HYPERV_CPUID_SYNDBG_INTERFACE 0x40000081
34 #define HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES 0x40000082
37 * Hyper-V synthetic debugger platform capabilities
38 * These are HYPERV_CPUID_SYNDBG_PLATFORM_CAPABILITIES.EAX bits.
40 #define HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING BIT(1)
42 /* Hyper-V Synthetic debug options MSR */
43 #define HV_X64_MSR_SYNDBG_CONTROL 0x400000F1
44 #define HV_X64_MSR_SYNDBG_STATUS 0x400000F2
45 #define HV_X64_MSR_SYNDBG_SEND_BUFFER 0x400000F3
46 #define HV_X64_MSR_SYNDBG_RECV_BUFFER 0x400000F4
47 #define HV_X64_MSR_SYNDBG_PENDING_BUFFER 0x400000F5
48 #define HV_X64_MSR_SYNDBG_OPTIONS 0x400000FF
50 /* Hyper-V HV_X64_MSR_SYNDBG_OPTIONS bits */
51 #define HV_X64_SYNDBG_OPTION_USE_HCALLS BIT(2)
53 static inline struct kvm_vcpu_hv *vcpu_to_hv_vcpu(struct kvm_vcpu *vcpu)
55 return &vcpu->arch.hyperv;
58 static inline struct kvm_vcpu *hv_vcpu_to_vcpu(struct kvm_vcpu_hv *hv_vcpu)
60 struct kvm_vcpu_arch *arch;
62 arch = container_of(hv_vcpu, struct kvm_vcpu_arch, hyperv);
63 return container_of(arch, struct kvm_vcpu, arch);
66 static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
68 return &vcpu->arch.hyperv.synic;
71 static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
73 return hv_vcpu_to_vcpu(container_of(synic, struct kvm_vcpu_hv, synic));
76 static inline struct kvm_hv_syndbg *vcpu_to_hv_syndbg(struct kvm_vcpu *vcpu)
78 return &vcpu->kvm->arch.hyperv.hv_syndbg;
81 int kvm_hv_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host);
82 int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata, bool host);
84 bool kvm_hv_hypercall_enabled(struct kvm *kvm);
85 int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
87 void kvm_hv_irq_routing_update(struct kvm *kvm);
88 int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
89 void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
90 int kvm_hv_activate_synic(struct kvm_vcpu *vcpu, bool dont_zero_synic_pages);
92 void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
93 void kvm_hv_vcpu_postcreate(struct kvm_vcpu *vcpu);
94 void kvm_hv_vcpu_uninit(struct kvm_vcpu *vcpu);
96 bool kvm_hv_assist_page_enabled(struct kvm_vcpu *vcpu);
97 bool kvm_hv_get_assist_page(struct kvm_vcpu *vcpu,
98 struct hv_vp_assist_page *assist_page);
100 static inline struct kvm_vcpu_hv_stimer *vcpu_to_stimer(struct kvm_vcpu *vcpu,
103 return &vcpu_to_hv_vcpu(vcpu)->stimer[timer_index];
106 static inline struct kvm_vcpu *stimer_to_vcpu(struct kvm_vcpu_hv_stimer *stimer)
108 struct kvm_vcpu_hv *hv_vcpu;
110 hv_vcpu = container_of(stimer - stimer->index, struct kvm_vcpu_hv,
112 return hv_vcpu_to_vcpu(hv_vcpu);
115 static inline bool kvm_hv_has_stimer_pending(struct kvm_vcpu *vcpu)
117 return !bitmap_empty(vcpu->arch.hyperv.stimer_pending_bitmap,
118 HV_SYNIC_STIMER_COUNT);
121 void kvm_hv_process_stimers(struct kvm_vcpu *vcpu);
123 void kvm_hv_setup_tsc_page(struct kvm *kvm,
124 struct pvclock_vcpu_time_info *hv_clock);
126 void kvm_hv_init_vm(struct kvm *kvm);
127 void kvm_hv_destroy_vm(struct kvm *kvm);
128 int kvm_vm_ioctl_hv_eventfd(struct kvm *kvm, struct kvm_hyperv_eventfd *args);
129 int kvm_vcpu_ioctl_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid,
130 struct kvm_cpuid_entry2 __user *entries);