arch/x86/kvm/kvm_onhyperv.h

   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)
  10 int hv_remote_flush_tlb_with_range(struct kvm *kvm,
  11                 struct kvm_tlb_range *range);
  12 int hv_remote_flush_tlb(struct kvm *kvm);
  13
  14 static 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 */
  27 static inline void hv_track_root_tdp(struct kvm_vcpu *vcpu, hpa_t root_tdp)
  28 {
  29 }
  30 #endif /* !CONFIG_HYPERV */
  31
  32 #endif