Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/x86/kvm/svm/hyperv.h
26471 views
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


56