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
15static 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
29static 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
44void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu);
45#else /* CONFIG_KVM_HYPERV */
46static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu) {}
47static inline bool nested_svm_l2_tlb_flush_enabled(struct kvm_vcpu *vcpu)
48{
49	return false;
50}
51static 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