LXR linux/arch/x86/kvm/kvm

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * KVM L1 hypervisor optimizations on Hyper-V.
   4 */
   5
   6#ifndef __ARCH_X86_KVM_KVM_ONHYPERV_H__
   7#define __ARCH_X86_KVM_KVM_ONHYPERV_H__
   8
   9#if IS_ENABLED(CONFIG_HYPERV)
  10int hv_remote_flush_tlb_with_range(struct kvm *kvm,
  11                struct kvm_tlb_range *range);
  12int hv_remote_flush_tlb(struct kvm *kvm);
  13
  14static inline void hv_track_root_tdp(struct kvm_vcpu *vcpu, hpa_t root_tdp)
  15{
  16        struct kvm_arch *kvm_arch = &vcpu->kvm->arch;
  17
  18        if (kvm_x86_ops.tlb_remote_flush == hv_remote_flush_tlb) {
  19                spin_lock(&kvm_arch->hv_root_tdp_lock);
  20                vcpu->arch.hv_root_tdp = root_tdp;
  21                if (root_tdp != kvm_arch->hv_root_tdp)
  22                        kvm_arch->hv_root_tdp = INVALID_PAGE;
  23                spin_unlock(&kvm_arch->hv_root_tdp_lock);
  24        }
  25}
  26#else /* !CONFIG_HYPERV */
  27static inline void hv_track_root_tdp(struct kvm_vcpu *vcpu, hpa_t root_tdp)
  28{
  29}
  30#endif /* !CONFIG_HYPERV */
  31
  32#endif
  33