1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright © 2019 Oracle and/or its affiliates. All rights reserved. 4 * Copyright © 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. 5 * 6 * KVM Xen emulation 7 */ 8 9 #ifndef __ARCH_X86_KVM_XEN_H__ 10 #define __ARCH_X86_KVM_XEN_H__ 11 12 #include <linux/jump_label_ratelimit.h> 13 14 extern struct static_key_false_deferred kvm_xen_enabled; 15 16 int __kvm_xen_has_interrupt(struct kvm_vcpu *vcpu); 17 int kvm_xen_vcpu_set_attr(struct kvm_vcpu *vcpu, struct kvm_xen_vcpu_attr *data); 18 int kvm_xen_vcpu_get_attr(struct kvm_vcpu *vcpu, struct kvm_xen_vcpu_attr *data); 19 int kvm_xen_hvm_set_attr(struct kvm *kvm, struct kvm_xen_hvm_attr *data); 20 int kvm_xen_hvm_get_attr(struct kvm *kvm, struct kvm_xen_hvm_attr *data); 21 int kvm_xen_hypercall(struct kvm_vcpu *vcpu); 22 int kvm_xen_write_hypercall_page(struct kvm_vcpu *vcpu, u64 data); 23 int kvm_xen_hvm_config(struct kvm *kvm, struct kvm_xen_hvm_config *xhc); 24 void kvm_xen_destroy_vm(struct kvm *kvm); 25 26 static inline bool kvm_xen_hypercall_enabled(struct kvm *kvm) 27 { 28 return static_branch_unlikely(&kvm_xen_enabled.key) && 29 (kvm->arch.xen_hvm_config.flags & 30 KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL); 31 } 32 33 static inline int kvm_xen_has_interrupt(struct kvm_vcpu *vcpu) 34 { 35 if (static_branch_unlikely(&kvm_xen_enabled.key) && 36 vcpu->arch.xen.vcpu_info_set && vcpu->kvm->arch.xen.upcall_vector) 37 return __kvm_xen_has_interrupt(vcpu); 38 39 return 0; 40 } 41 42 /* 32-bit compatibility definitions, also used natively in 32-bit build */ 43 #include <asm/pvclock-abi.h> 44 #include <asm/xen/interface.h> 45 46 struct compat_arch_vcpu_info { 47 unsigned int cr2; 48 unsigned int pad[5]; 49 }; 50 51 struct compat_vcpu_info { 52 uint8_t evtchn_upcall_pending; 53 uint8_t evtchn_upcall_mask; 54 uint16_t pad; 55 uint32_t evtchn_pending_sel; 56 struct compat_arch_vcpu_info arch; 57 struct pvclock_vcpu_time_info time; 58 }; /* 64 bytes (x86) */ 59 60 struct compat_arch_shared_info { 61 unsigned int max_pfn; 62 unsigned int pfn_to_mfn_frame_list_list; 63 unsigned int nmi_reason; 64 unsigned int p2m_cr3; 65 unsigned int p2m_vaddr; 66 unsigned int p2m_generation; 67 uint32_t wc_sec_hi; 68 }; 69 70 struct compat_shared_info { 71 struct compat_vcpu_info vcpu_info[MAX_VIRT_CPUS]; 72 uint32_t evtchn_pending[32]; 73 uint32_t evtchn_mask[32]; 74 struct pvclock_wall_clock wc; 75 struct compat_arch_shared_info arch; 76 }; 77 78 #endif /* __ARCH_X86_KVM_XEN_H__ */ 79