1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Common Hyper-V on KVM and KVM on Hyper-V definitions (SVM).
4 */
5
6 #ifndef __ARCH_X86_KVM_SVM_HYPERV_H__
7 #define __ARCH_X86_KVM_SVM_HYPERV_H__
8
9 #include <asm/mshyperv.h>
10
11 #include "../hyperv.h"
12 #include "svm.h"
13
14 #ifdef CONFIG_KVM_HYPERV
15 static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu)
16 {
17 struct vcpu_svm *svm = to_svm(vcpu);
18 struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
19 struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
20
21 if (!hv_vcpu)
22 return;
23
24 hv_vcpu->nested.pa_page_gpa = hve->partition_assist_page;
25 hv_vcpu->nested.vm_id = hve->hv_vm_id;
26 hv_vcpu->nested.vp_id = hve->hv_vp_id;
27 }
28
29 static inline bool nested_svm_l2_tlb_flush_enabled(struct kvm_vcpu *vcpu)
30 {
31 struct vcpu_svm *svm = to_svm(vcpu);
32 struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
33 struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
34
35 if (!hv_vcpu)
36 return false;
37
38 if (!hve->hv_enlightenments_control.nested_flush_hypercall)
39 return false;
40
41 return hv_vcpu->vp_assist_page.nested_control.features.directhypercall;
42 }
43
44 void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu);
45 #else /* CONFIG_KVM_HYPERV */
46 static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu) {}
47 static inline bool nested_svm_l2_tlb_flush_enabled(struct kvm_vcpu *vcpu)
48 {
49 return false;
50 }
51 static inline void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu) {}
52 #endif /* CONFIG_KVM_HYPERV */
53
54 #endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */
55
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