diff options
Diffstat (limited to 'arch/x86/kvm/kvm_onhyperv.h')
| -rw-r--r-- | arch/x86/kvm/kvm_onhyperv.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/x86/kvm/kvm_onhyperv.h b/arch/x86/kvm/kvm_onhyperv.h new file mode 100644 index 000000000000..1c67abf2eba9 --- /dev/null +++ b/arch/x86/kvm/kvm_onhyperv.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * KVM L1 hypervisor optimizations on Hyper-V. + */ + +#ifndef __ARCH_X86_KVM_KVM_ONHYPERV_H__ +#define __ARCH_X86_KVM_KVM_ONHYPERV_H__ + +#if IS_ENABLED(CONFIG_HYPERV) +int hv_remote_flush_tlb_with_range(struct kvm *kvm, + struct kvm_tlb_range *range); +int hv_remote_flush_tlb(struct kvm *kvm); + +static inline void hv_track_root_tdp(struct kvm_vcpu *vcpu, hpa_t root_tdp) +{ + struct kvm_arch *kvm_arch = &vcpu->kvm->arch; + + if (kvm_x86_ops.tlb_remote_flush == hv_remote_flush_tlb) { + spin_lock(&kvm_arch->hv_root_tdp_lock); + vcpu->arch.hv_root_tdp = root_tdp; + if (root_tdp != kvm_arch->hv_root_tdp) + kvm_arch->hv_root_tdp = INVALID_PAGE; + spin_unlock(&kvm_arch->hv_root_tdp_lock); + } +} +#else /* !CONFIG_HYPERV */ +static inline void hv_track_root_tdp(struct kvm_vcpu *vcpu, hpa_t root_tdp) +{ +} +#endif /* !CONFIG_HYPERV */ + +#endif |