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 
nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu * vcpu)14 static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu)
15 {
16 	struct vcpu_svm *svm = to_svm(vcpu);
17 	struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
18 	struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
19 
20 	if (!hv_vcpu)
21 		return;
22 
23 	hv_vcpu->nested.pa_page_gpa = hve->partition_assist_page;
24 	hv_vcpu->nested.vm_id = hve->hv_vm_id;
25 	hv_vcpu->nested.vp_id = hve->hv_vp_id;
26 }
27 
nested_svm_l2_tlb_flush_enabled(struct kvm_vcpu * vcpu)28 static inline bool nested_svm_l2_tlb_flush_enabled(struct kvm_vcpu *vcpu)
29 {
30 	struct vcpu_svm *svm = to_svm(vcpu);
31 	struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
32 	struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
33 
34 	if (!hv_vcpu)
35 		return false;
36 
37 	if (!hve->hv_enlightenments_control.nested_flush_hypercall)
38 		return false;
39 
40 	return hv_vcpu->vp_assist_page.nested_control.features.directhypercall;
41 }
42 
43 void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu);
44 
45 #endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */
46