91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __KVM_X86_VMX_HYPERV_H
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#define __KVM_X86_VMX_HYPERV_H
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#include <linux/kvm_host.h>
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#include "vmcs12.h"
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#include "vmx.h"
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#define EVMPTR_INVALID (-1ULL)
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#define EVMPTR_MAP_PENDING (-2ULL)
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enum nested_evmptrld_status {
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EVMPTRLD_DISABLED,
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EVMPTRLD_SUCCEEDED,
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EVMPTRLD_VMFAIL,
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EVMPTRLD_ERROR,
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};
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#ifdef CONFIG_KVM_HYPERV
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static inline bool evmptr_is_valid(u64 evmptr)
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{
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return evmptr != EVMPTR_INVALID && evmptr != EVMPTR_MAP_PENDING;
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}
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static inline bool nested_vmx_is_evmptr12_valid(struct vcpu_vmx *vmx)
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{
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return evmptr_is_valid(vmx->nested.hv_evmcs_vmptr);
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}
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static inline bool evmptr_is_set(u64 evmptr)
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{
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return evmptr != EVMPTR_INVALID;
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}
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static inline bool nested_vmx_is_evmptr12_set(struct vcpu_vmx *vmx)
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{
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return evmptr_is_set(vmx->nested.hv_evmcs_vmptr);
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}
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static inline struct hv_enlightened_vmcs *nested_vmx_evmcs(struct vcpu_vmx *vmx)
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{
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return vmx->nested.hv_evmcs;
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}
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static inline bool guest_cpuid_has_evmcs(struct kvm_vcpu *vcpu)
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{
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/*
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* eVMCS is exposed to the guest if Hyper-V is enabled in CPUID and
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* eVMCS has been explicitly enabled by userspace.
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*/
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return vcpu->arch.hyperv_enabled &&
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to_vmx(vcpu)->nested.enlightened_vmcs_enabled;
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}
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u64 nested_get_evmptr(struct kvm_vcpu *vcpu);
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uint16_t nested_get_evmcs_version(struct kvm_vcpu *vcpu);
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int nested_enable_evmcs(struct kvm_vcpu *vcpu,
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uint16_t *vmcs_version);
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void nested_evmcs_filter_control_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
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int nested_evmcs_check_controls(struct vmcs12 *vmcs12);
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bool nested_evmcs_l2_tlb_flush_enabled(struct kvm_vcpu *vcpu);
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void vmx_hv_inject_synthetic_vmexit_post_tlb_flush(struct kvm_vcpu *vcpu);
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#else
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static inline bool evmptr_is_valid(u64 evmptr)
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{
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return false;
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}
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static inline bool nested_vmx_is_evmptr12_valid(struct vcpu_vmx *vmx)
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{
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return false;
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}
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static inline bool evmptr_is_set(u64 evmptr)
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{
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return false;
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}
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static inline bool nested_vmx_is_evmptr12_set(struct vcpu_vmx *vmx)
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{
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return false;
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}
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static inline struct hv_enlightened_vmcs *nested_vmx_evmcs(struct vcpu_vmx *vmx)
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{
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return NULL;
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}
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#endif
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#endif /* __KVM_X86_VMX_HYPERV_H */
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