hyperv.h

Go to the documentation of this file.

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Common Hyper-V on KVM and KVM on Hyper-V definitions (SVM).
 */
 
#ifndef __ARCH_X86_KVM_SVM_HYPERV_H__
#define __ARCH_X86_KVM_SVM_HYPERV_H__
 
#include <asm/mshyperv.h>
 
#include "../hyperv.h"
#include "svm.h"
 
#ifdef CONFIG_KVM_HYPERV
static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu)
{
    struct vcpu_svm *svm = to_svm(vcpu);
    struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
    struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
 
    if (!hv_vcpu)
        return;
 
    hv_vcpu->nested.pa_page_gpa = hve->partition_assist_page;
    hv_vcpu->nested.vm_id = hve->hv_vm_id;
    hv_vcpu->nested.vp_id = hve->hv_vp_id;
}
 
static inline bool nested_svm_l2_tlb_flush_enabled(struct kvm_vcpu *vcpu)
{
    struct vcpu_svm *svm = to_svm(vcpu);
    struct hv_vmcb_enlightenments *hve = &svm->nested.ctl.hv_enlightenments;
    struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
 
    if (!hv_vcpu)
        return false;
 
    if (!hve->hv_enlightenments_control.nested_flush_hypercall)
        return false;
 
    return hv_vcpu->vp_assist_page.nested_control.features.directhypercall;
}
 
void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu);
#else /* CONFIG_KVM_HYPERV */
static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu) {}
static inline bool nested_svm_l2_tlb_flush_enabled(struct kvm_vcpu *vcpu)
{
    return false;
}
static inline void svm_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu) {}
#endif /* CONFIG_KVM_HYPERV */
 
#endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */