diff options
Diffstat (limited to 'arch/x86/kvm/svm/svm_onhyperv.h')
| -rw-r--r-- | arch/x86/kvm/svm/svm_onhyperv.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm_onhyperv.h b/arch/x86/kvm/svm/svm_onhyperv.h index 57291e222395..0f262460b2e6 100644 --- a/arch/x86/kvm/svm/svm_onhyperv.h +++ b/arch/x86/kvm/svm/svm_onhyperv.h @@ -31,6 +31,11 @@ struct hv_enlightenments { u64 reserved; } __packed; +/* + * Hyper-V uses the software reserved clean bit in VMCB + */ +#define VMCB_HV_NESTED_ENLIGHTENMENTS VMCB_SW + static inline void svm_hv_init_vmcb(struct vmcb *vmcb) { struct hv_enlightenments *hve = @@ -52,6 +57,23 @@ static inline void svm_hv_hardware_setup(void) } } +static inline void svm_hv_vmcb_dirty_nested_enlightenments( + struct kvm_vcpu *vcpu) +{ + struct vmcb *vmcb = to_svm(vcpu)->vmcb; + struct hv_enlightenments *hve = + (struct hv_enlightenments *)vmcb->control.reserved_sw; + + /* + * vmcb can be NULL if called during early vcpu init. + * And its okay not to mark vmcb dirty during vcpu init + * as we mark it dirty unconditionally towards end of vcpu + * init phase. + */ + if (vmcb && vmcb_is_clean(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS) && + hve->hv_enlightenments_control.msr_bitmap) + vmcb_mark_dirty(vmcb, VMCB_HV_NESTED_ENLIGHTENMENTS); +} #else static inline void svm_hv_init_vmcb(struct vmcb *vmcb) @@ -61,6 +83,11 @@ static inline void svm_hv_init_vmcb(struct vmcb *vmcb) static inline void svm_hv_hardware_setup(void) { } + +static inline void svm_hv_vmcb_dirty_nested_enlightenments( + struct kvm_vcpu *vcpu) +{ +} #endif /* CONFIG_HYPERV */ #endif /* __ARCH_X86_KVM_SVM_ONHYPERV_H__ */ |